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Panasonic R410A Service Manual

Manual is about: VRF System Air Conditioner

Summary of R410A

  • Page 1

    Technical data & service manual 8546484931000 reference no. Sm830210-00 ■ r410a models model no. Indoor units type indoor units type 60 71 100 125 140 u1 4-way cassette s-60pu1r5 s-71pu1r5 s-100pu1r5 s-125pu1r5 s-140pu1r5 e1 ducted s-60pe1r5 s-71pe1r5 s-100pe1r5 s-125pe1r5 s-140pe1r5 outdoor units t...

  • Page 2

    I important! Please read before starting this air conditioner must be installed by the sales dealer or installer. This information is provided for use only by authorized persons. For safe installation and trouble-free operation, you must: ● carefully read this instruction booklet before beginning. ●...

  • Page 3

    Ii • do not leak refrigerant while piping work for an installation or re-installation, and while repairing refrigeration parts. Handle liquid refrigerant carefully as it may cause frostbite. When servicing • turn the power off at the main power box (mains) before opening the unit to check or repair ...

  • Page 4

    Iii rohs · this product does not contain any hazardous substances prohibited by the rohs directive. Warning · you are requested to use rohs compliant for maintenance or repair. 2. The standards for minimum room volume are as follows. (1) no partition (shaded portion) (2) when there is an effective o...

  • Page 5

    1-1 1 1. Specifications 1-1. Unit specifications................................................................................................... 1-2 4-way cassette type ............................................................................................................................ 1-2...

  • Page 6

    1-2 1 single-type 1-1. Unit specifi cations 4-way cassette type s-60pu1r5 / u-60pe1r5 indoor model s–60pu1r5 panel model cz–kpu2 outdoor model u–60pe1r5 branch pipe model – performance test condition iso5151 / as/nzs3823 power supply ø, hz 1ø 50 hz 1ø 50 hz v 230 v 240 v 230 v 240 v min max c o o l ...

  • Page 7

    1-3 1 single-type 1-1. Unit specifi cations 4-way cassette type s-71pu1r5 / u-71pe1r5 indoor model s–71pu1r5 panel model cz–kpu2 outdoor model u–71pe1r5 branch pipe model – performance test condition iso5151 / as/nzs3823 power supply ø, hz 1ø 50 hz 1ø 50 hz v 230 v 240 v 230 v 240 v min max c o o l ...

  • Page 8

    1-4 1 single-type 1-1. Unit specifi cations 4-way cassette type s-100pu1r5 / u-100pe1r5 indoor model s–100pu1r5 panel model cz–kpu2 outdoor model u–100pe1r5 branch pipe model – performance test condition iso5151 / as/nzs3823 power supply ø, hz 1ø 50 hz 1ø 50 hz v 230 v 240 v 230 v 240 v min max c o ...

  • Page 9

    1-5 1 single-type 1-1. Unit specifi cations 4-way cassette type s-125pu1r5 / u-125pe1r5 indoor model s–125pu1r5 panel model cz–kpu2 outdoor model u–125pe1r5 branch pipe model – performance test condition iso5151 / as/nzs3823 power supply ø, hz 1ø 50 hz 1ø 50 hz v 230 v 240 v 230 v 240 v min max c o ...

  • Page 10

    1-6 1 single-type 1-1. Unit specifi cations 4-way cassette type s-140pu1r5 / u-140pe1r5 indoor model s–140pu1r5 panel model cz–kpu2 outdoor model u–140pe1r5 branch pipe model – performance test condition iso5151 / as/nzs3823 power supply ø, hz 1ø 50 hz 1ø 50 hz v 230 v 240 v 230 v 240 v min max c o ...

  • Page 11

    1-7 1 single-type 1-1. Unit specifi cations ducted type s-60pe1r5 / u-60pe1r5 indoor model s–60pe1r5 panel model – outdoor model u–60pe1r5 branch pipe model – performance test condition iso5151 / as/nzs3823 power supply ø, hz 1ø 50 hz 1ø 50 hz v 230 v 240 v 230 v 240 v min max c o o l i n g capacity...

  • Page 12

    1-8 1 single-type 1-1. Unit specifi cations ducted type s-71pe1r5 / u-71pe1r5 indoor model s–71pe1r5 panel model – outdoor model u–71pe1r5 branch pipe model – performance test condition iso5151 / as/nzs3823 power supply ø, hz 1ø 50 hz 1ø 50 hz v 230 v 240 v 230 v 240 v min max c o o l i n g capacity...

  • Page 13

    1-9 1 single-type 1-1. Unit specifi cations ducted type s-100pe1r5 / u-100pe1r5 indoor model s–100pe1r5 panel model – outdoor model u–100pe1r5 branch pipe model – performance test condition iso5151 / as/nzs3823 power supply ø, hz 1ø 50 hz 1ø 50 hz v 230 v 240 v 230 v 240 v min max c o o l i n g capa...

  • Page 14

    1-10 1 single-type 1-1. Unit specifi cations ducted type s-125pe1r5 / u-125pe1r5 indoor model s–125pe1r5 panel model – outdoor model u–125pe1r5 branch pipe model – performance test condition iso5151 / as/nzs3823 power supply ø, hz 1ø 50 hz 1ø 50 hz v 230 v 240 v 230 v 240 v min max c o o l i n g cap...

  • Page 15

    1-11 1 single-type 1-1. Unit specifi cations ducted type s-140pe1r5 / u-140pe1r5 indoor model s–140pe1r5 panel model – outdoor model u–140pe1r5 branch pipe model – performance test condition iso5151 / as/nzs3823 power supply ø, hz 1ø 50 hz 1ø 50 hz v 230 v 240 v 230 v 240 v min max c o o l i n g cap...

  • Page 16

    1-12 1 single-type 1-1. Unit specifi cations single split type s-100pu1r5 / u-100pe1r8 indoor model s–100pu1r5 panel model cz-kpu2 outdoor model u–100pe1r8 branch pipe model – performance test condition as/nzs3823.1 power supply ø, hz 1ø 50 hz 3ø 50 hz v 230 v 240 v 400 v 415 v min max c o o l i n g...

  • Page 17

    1-13 1 single-type 1-1. Unit specifi cations single split type s-125pu1r5 / u-125pe1r8 indoor model s–125pu1r5 panel model cz-kpu2 outdoor model u–125pe1r8 branch pipe model – performance test condition as/nzs3823.1 power supply ø, hz 1ø 50 hz 3ø 50 hz v 230 v 240 v 400 v 415 v min max c o o l i n g...

  • Page 18

    1-14 1 single-type 1-1. Unit specifi cations single split type s-140pu1r5 / u-140pe1r8 indoor model s–140pu1r5 panel model cz-kpu2 outdoor model u–140pe1r8 branch pipe model – performance test condition as/nzs3823.1 power supply ø, hz 1ø 50 hz 3ø 50 hz v 230 v 240 v 400 v 415 v min max c o o l i n g...

  • Page 19

    1-15 1 1-2. Dimensional data (a) indoor units: s-60pu1r5 / 71pu1r5 1 2 3 4 5 6 7 8 9 10 air intake discharge outlet refrigerant tubing (liquid tube) ø9.52 (flared) refrigerant tubing (gas tube) ø15.88 (flared) drain tube connection port vp25 (outer dia. ø32) power supply port discharge duct connecti...

  • Page 20

    1-16 1 (a) indoor units: s-100pu1r5 / 125pu1r5 / 140pu1r5 unit: mm 30 18 118 187 2 480 840 167 187 180 319 95 80 80 1 2 3 4 5 6 7 8 9 10 air intake discharge outlet refrigerant tubing (liquid tube) ø9.52 (flared) refrigerant tubing (gas tube) ø15.88 (flared) drain tube connection port vp25 (outer di...

  • Page 21

    1-17 1 1-2. Dimensional data (a) indoor units: ducted type s-60pe1r5 / s-71pe1r5 / s-100pe1r5 / s-125pe1r5 / s-140pe1r5 position of suspension bolt s-60pe1r5 1060 1060 1100 1100 540 540 700 unit : mm 700 s-71pe1r5 s-100pe1r5 s-125pe1r5 s-140pe1r5 s-60pe1r5 type 130 195 33.1 35.7 290 360 118 a b c d ...

  • Page 22

    1-18 1 1-2. Dimensional data (b) outdoor units: u-60pe1r5 / u-71pe1r5 1 2 3 4 5 6 7 mounting hole (4-r6.5), anchor bolt: m10 refrigerant piping (liquid pipe), flared connection (ø9.52) refrigerant piping (gas pipe), flared connection (ø15.88) electrical wiring port (ø13) electrical wiring port (ø22)...

  • Page 23

    1-19 1 1-2. Dimensional data (b) outdoor units: u-100pe1r5 / u-125pe1r5 / u-140pe1r5 u-100pe1r8 / u-125pe1r8 / u-140pe1r8 1 2 3 4 5 6 7 mounting hole (4-r6.5), anchor bolt: m10 refrigerant piping (liquid pipe), flared connection (ø9.52) refrigerant piping (gas pipe), flared connection (ø15.88) elect...

  • Page 24

    1-20 1 m p ec p ø15.88 ø15.88 ø9.52 ø9.52 compressor compressor heat exchanger heat ec p defrost temp expantion valve cooling cycle heating cycle exchanger heat exchanger temp thermistor temp thermistor outdoor-air discharge temp thermistor suction temp thermistor 4-way valve high pressure switch hi...

  • Page 25

    1-21 1 1-4. Operating range temperature indoor air intake temp. Outdoor air intake temp. Cooling maximum 32°c db / 25°c wb 46°c db minimum 18°c db / 14°c wb -15°c db heating maximum 30°c db / − wb 24°c db/18°c wb minimum 16°c db / − wb -20°c db / -20°c wb sec1.Indb 21 sec1.Indb 21 2012/03/07 17:29:5...

  • Page 26

    1-22 1 1-5. Capacity correction graph according to temperature condition u-60pe1r5 (for 50 hz) cooling capacity ratio (maximum capacity) heating capacity ratio (maximum capacity) input coefficient (%) capacity coefficient (%) outdoor air intake temp ( °c db) 20 40 60 80 100 120 140 20 40 60 80 100 1...

  • Page 27

    1-23 1 1-5. Capacity correction graph according to temperature condition u-71pe1r5 (for 50 hz) cooling capacity ratio (maximum capacity) heating capacity ratio (maximum capacity) input coefficient (%) capacity coefficient (%) outdoor air intake temp ( °c db) 20 40 60 80 100 120 140 20 40 60 80 100 1...

  • Page 28

    1-24 1 1-5. Capacity correction graph according to temperature condition u-100pe1r5 (for 50 hz) cooling capacity ratio (maximum capacity) heating capacity ratio (maximum capacity) cooling heating input coefficient (%) capacity coefficient (%) input coefficient (%) capacity coefficient (%) outdoor ai...

  • Page 29

    1-25 1 1-5. Capacity correction graph according to temperature condition u-125pe1r5 (for 50 hz) cooling capacity ratio (maximum capacity) heating capacity ratio (maximum capacity) input coefficient (%) capacity coefficient (%) input coefficient (%) capacity coefficient (%) outdoor air intake temp ( ...

  • Page 30

    1-26 1 1-5. Capacity correction graph according to temperature condition u-140pe1r5 (for 50 hz) cooling capacity ratio (maximum capacity) heating capacity ratio (maximum capacity) input coefficient (%) capacity coefficient (%) outdoor air intake temp ( °c db) 0 20 40 60 80 100 120 140 0 20 40 60 80 ...

  • Page 31

    1-27 1 1-6. Noise criterion curves (a) indoor units low high octa v e band le v el (db) *0db = 0.0002 µbar frequency at center of sound pressure band (hz) 10 20 30 40 50 60 63 125 250 500 1000 2000 4000 8000 nc-40 nc-60 nc-50 nc-30 nc-20 4 way cassette type approximate minimum audible limit for cont...

  • Page 32

    1-28 1 1-6. Noise criterion curves (a) indoor units ducted type model sound level source : s-60pe1r5 : high 43 db(a) low 40 db(a) : 230-240v , single phase , 50hz condition : under the unit 1.5m model sound level source : s-100pe1r5 : high 48 db(a) low 44 db(a) : 230-240v , single phase , 50hz condi...

  • Page 33

    1-29 1 1-6. Noise criterion curves (b) outdoor units model sound level condition source : u-60pe1r5 : heating 50 db(a) : 1 m in front at height of 1.5 m : 230-240v, 1 phase, 50hz heating model sound level condition source : u-60pe1r5 : cooling 48 db(a) : 1 m in front at height of 1.5 m : 230-240v, 1...

  • Page 34

    1-30 1 1-6. Noise criterion curves (b) outdoor units model sound level condition source : u-100pe1r5 : heating 52 db(a) : 1 m in front at height of 1.5 m : 230-240v, 1 phase, 50hz heating model sound level condition source : u-100pe1r5 : cooling 52 db(a) : 1 m in front at height of 1.5 m : 230-240v,...

  • Page 35

    1-31 1 1-6. Noise criterion curves (b) outdoor units model sound level condition source : u-140pe1r5 : heating 55 db(a) : 1 m in front at height of 1.5 m : 230-240v, 1 phase, 50hz heating model sound level condition source : u-140pe1r5 : cooling 54 db(a) : 1 m in front at height of 1.5 m : 230-240v,...

  • Page 36

    1-32 1 1-7. Indoor fan performance 0 50 100 5 3 5 2 5 1 5 0 50 100 150 0 4 0 3 0 2 0 1 0 50 100 150 20.0 30.0 40.0 50.0 60.0 70.0 0 50 100 150 20.0 30.0 40.0 50.0 60.0 0 50 100 150 0 5 0 4 0 3 0 2 s-60pe1r5 p-q curve exter nal static pressure (p a) air volume (m 3 /min) s-71pe1r5 p-q curve exter nal...

  • Page 37

    1-33 1 1-8. Airflow distance chart 4-way cassette type 0 1 2 3 0 1 2 3 1.5m/s 1.0m/s 0.5m/s 0.3m/s v e rt ical air flo w distance (m) horizontal air flow distance (m) 5 4 3 2 1 0 1 2 3 4 5 (strong wind : discharge angle approx.65°) (room temperature approx.20°c) 0 1 2 3 0 1 2 3 1.5m/s 1.0m/s 0.5m/s ...

  • Page 38

    1-34 1 s-100pu1r5 / 125pu1r5 / 140pu1r5 heating : distribution of wind velocity heating : distribution of temperature cooling : distribution of wind velocity cooling : distribution of temperature 0 1 2 3 0 1 2 3 20 24 26 22 v e rt ical air fl o w distance (m) horizontal air flow distance (m) (strong...

  • Page 39

    1-35 1 1-9. Intaking fresh air of 4 way cassette type precautions regarding external air intake (1) ventilation load ensure that the design of the air-conditioner takes air-conditioning loads into consideration when external air intake is involved. (2) restrictions on external air intake ensure that...

  • Page 40

    1-36 1 • u1 type when an external air intake flange (ø100) is in use external air intake volume and resistance and operation noise characteristics within the unit • calculate the operation noise when external air is being fed by combining the noise when only external air is being fed as shown in the...

  • Page 41

    1-37 1 1-10. Electrical wiring ■ general precautions on wiring (1) before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram. (2) circuit breaker must be incorporated in the fixed wiring in accordance with the wirin...

  • Page 42

    1 1-38 ■ wiring system diagrams n ot e (1) refer to “recommended wire length and wire diameter for power supply system” for the explanation of “a”, “b”, “c”, “d” and “e” in the above diagram. (2) the basic connection diagram of the indoor unit shows the terminal boards, so the terminal boards in you...

  • Page 43

    1 1-39 stranded wire ring pressure terminal screw and special washer ring pressure terminal terminal plate ring pressure terminal screw special washer wire wire insulation tape 8 mm insulation tape shield mesh shield mesh strip 10 mm fig. 1-1 fig. 1-2 fig. 1-3 fig. 1-4 fig. 1-5 fig. 1-6 ■ wiring sam...

  • Page 44

    1 1-40 h1 1-11. Installation instructions outdoor unit tubing length (a) single type keep refrigerant tubing between the indoor and outdoor units as short as possible. The length of the refrigerant tubes between the indoor and outdoor units are limited by the elevation difference between the 2 units...

  • Page 45

    1 1-41 check of limit density when installing an air conditioner in a room, it is necessary to ensure that even if the refrigerant gas accidentally escapes, its density does not exceed the limit level. If the density might exceed the limit level, it is necessary to set up an opening between it and t...

  • Page 46

    1 1-42 selecting the installation site outdoor unit accessories supplied with outdoor unit the following parts are supplied as accessories with each outdoor unit. Check that all accessory parts are present before installing the outdoor unit. Part name q’ty figur remarks part name q’ty figur remarks ...

  • Page 47

    1 1-43 • if there are obstacles above the unit ① for separate installation location • only if there are obstacles at the intake • if there are obstacles on the intake and the other side more than 100 more than 1000 less than 500 less than 500 more than 1000 more than 200 more than 500 more than 200 ...

  • Page 48

    1 1-44 pattern 2 if there is an obstacle that is higher than the unit on the discharge side. (there is no limit to the height of the obstacle above the discharge.) • if the upper part is open ① for separate installation location more than 100 more than 300 • if there are obstacles above the unit ① f...

  • Page 49

    1 1-45 refrigerant installation for indoor unit refrigerant piping installation, refer to the installation instructions that comes with that indoor unit. Do not reuse existing piping, install new piping. 1. Precautions during refrigerant installation. ● use clean pipes with no dust inside. The pipe ...

  • Page 50

    1 1-46 precautions when operating the 3-way valve for piping installation ● do not open the 3-way valve until the piping installation is completed. • it is closed during shipment. • during installation the side panel may warp if only the flare nut is loosened and tightened with a torque wrench. As a...

  • Page 51

    1 1-47 precautions for flare nut installation ● dimensions when adding flare nuts and the tightening torque piping size tightening torque flare section dimensions a flare confi guration ø6.35 14.2n • m ~ 17.2n • m (1.4kgf • m ~ 1.7kgf • m) 8.7 ~ 9.1 90° ± 2° 45 ° ±1 ° ø9.52 32.7n • m ~ 39.9n • m (3....

  • Page 52

    1 1-48 ● pump down operation ● operate the pump down according to the following procedures. Procedure notes 1. Confi rm the valve on the liquid side and the gas side is surely open. 2. Press the pump down switch on outdoor printed board for 1 second or more. Perform the cooling operation for fi ve m...

  • Page 53

    1 1-49 l n u1 u2 r1 r2 l1 l2 l3 n u1 u2 2 sg 1 sg l n u1 u2 r1 r2 l n u1 u2 2 sg 1 sg outdoor unit outdoor unit circuit breaker circuit breaker circuit breaker circuit breaker ) ~ v 0 4 2 / 0 3 2 ( y l p p u s r e w o p ) ~ v 0 4 2 / 0 3 2 ( y l p p u s r e w o p ) ~ n 3 v 5 1 4 / 0 0 4 ( y l p p u ...

  • Page 54

    1 1-50 precautions regarding test run check before test run content check power supply cable indoor/outdoor connection wire earth wire ● is the wire set up and connected as described in the instructions? Check for any phase sequence. ● are the wire connection’s screws loose? ● is the open and close ...

  • Page 55

    1 1-51 run pin mode pin outdoor main pcb chk pin *mode pin: factory setting is cooling operation mode. Checks after installation have completed ● check the following items after completing installation. † is there a short circuit with the intake air flow? † is the insulation secure? (refrigerant pip...

  • Page 56

    1 1-52 ■ how to install the indoor unit ■ 4-way cassette type (u1 type) preparation for suspending this unit uses a drain pump. Use a carpenter’s level to check that the unit is level. Suspending the indoor unit (1) fix the suspension bolts securely in the ceiling using the method shown in the diagr...

  • Page 57

    1 1-53 placing the unit inside the ceiling this unit is equipped with the drain pump. Check a tape measure or carpenter’s level. Before installing the ceiling panel, complete the work of drain pipe and refrigerant pipe installation. (1) when placing the unit inside the ceiling, determine the pitch o...

  • Page 58

    1 1-54 a b 300 mm or less indoor unit indoor unit bend angle 90° prohibited bend angle less than 45° trap prohibited indoor unit ceiling surface air bleeder prohibited separation of support bracket = 1.5 m – 2 m trap prohibited upward gradient prohibited * length of supplied drain pipe = 250 mm down...

  • Page 59

    1 1-55 installing the drain pipe caution do not apply force to the drain port when connecting the drain pipe. Install and fix it near the indoor unit as close as possible. Do not use adhesive when connecting the drain port pipe and the drain hose. (1) how to install the drain pipe 1) first insert th...

  • Page 60

    1 1-56 checking the drainage be careful since the fan will start when you short the pin on the indoor control board. After wiring and drain piping are completed, use the following procedure to check that the water will drain smoothly. For this, prepare a bucket and wiping cloth to catch and wipe up ...

  • Page 61

    1 1-57 main unit ceiling side ceiling opening dimension a a : be sure to necessarily make a space within the range of 12 mm - 17 mm. If not within this range, malfunction or other trouble may occur. Flap ■ how to install the ceiling panel ■ 4-way cassette type (u1 type) accessories ceiling panel ×1 ...

  • Page 62

    1 1-58 (2) removing the air-intake grille 1) remove the 2 screws on the latch of the air-intake grille. (reattach the air-intake grille after installation of the ceiling panel.) 2) slide the air-intake grille catches in the direction shown by the arrows 1 to open the grille. 1 1 3) with the air-inta...

  • Page 63

    1 1-59 caution if the screws are not sufficiently tightened, trouble such as that shown in the figure below may occur. Be sure to tighten the screws securely. If a gap remains between the ceiling surface and the ceiling panel even after the screws are tightened, adjust the height of the unit again. ...

  • Page 64

    1 1-60 ■ others (1) checking after installation 1) check that there are no gaps between the unit and the ceiling panel, or between the ceiling panel and the ceiling surface. * gaps may cause water leakage and condensation. 2) check that the wiring is securely connected. * if it is not securely conne...

  • Page 65

    1 1-61 ■ selecting the installation site (e1 type) indoor unit avoid: ● areas where leakage of flammable gas may be expected. ● places where large amounts of oil mist exist. ● direct sunlight. ● locations near heat sources which may affect the performance of the unit. ● locations where external air ...

  • Page 66

    1 1-62 selecting the location for the indoor unit required minimum space for installation and service. Provide a check port on the piping side ceiling for repair and maintenance. ● install the indoor unit once the following conditions are satisfied and after receiving the customer approval. 1. The i...

  • Page 67

    1 1-63 suspending the indoor unit depending on the ceiling type: • insert suspension bolts or • use existing ceiling supports or construct a suitable support. Insert hole-in-anchor hole-in-plug concrete suspension bolt (m10 or 3/8") (field supply) ceiling support ceiling tiles warning it is importan...

  • Page 68

    1 1-64 installing the drain pipe (1) prepare standard hard pvc pipe (o.D. 32 mm) for the drain and use the supplied hose band to prevent water leaks. The pvc pipe must be purchased separately. The transparent drain part on the unit allows you to check drainage. (fig. 3-8) caution ● do not use adhesi...

  • Page 69

    1 1-65 connection for demand and forced stop ■ connection procedure be sure to always turn the power off first when setting up the wire and cable connections. Failure to do so may lead to electric shock or unit failure. The demand terminal set up is shown in the following illustration. Sg (shows the...

  • Page 70

    1 1-66 fire alarm device terminal block relay contact point: no voltage relay current input is dc 24 v 2 ma use a very small electric current contact point for the relay. When connection to the forced stop input with the forced stop input, it is possible to override the air conditioning operation to...

  • Page 71

    1 1-67 when connecting to the next system unit ● forced stop input can be transferred to the next system unit. ● when using the forced stop input, connect the wiring to the terminal points 1 and 2 on the right side of the lower part of the terminal block. ● the maximum wire/cable length is 100 m. ● ...

  • Page 72

    1 1-68 ■ wiring procedure follow the wiring procedure below for terminal connection. 1 set the wiring and cables for the power and signal lines to the outdoor unit together, and secure each wire and cable with the tie. 2 secure and clamp the power and signal lines with the tie, set up close to the v...

  • Page 73

    1 1-69 ■ filter chamber for indoor unit ■ optional parts cz-fdu2 installation instructions accessories installation 1. Be careful handling the unit when installing it inside the ceiling. Use particular care to avoid allowing any impact to strike the side of the filter chamber, as this can result in ...

  • Page 74

    1 1-70 ■ air intake kit for chamber cz-atu2 installation instructions accessories installation install the duct connection box after installing the indoor unit. Also, because the duct connection box is attached to the aif-intake plenum, use sufficient care when handling it. Especially avoid any impa...

  • Page 75

    1 1-71 ■ air intake kit for unit cz-bcu2 installation instructions accessories installation (2) peel off the insulation of the shaded portion and insert the connecting box for the main unit from the air outlet of the main unit. (3) if there is a space between the styrofoam and the sheet-metal, this ...

  • Page 76

    1 1-72 ■ air cut insulation cz-cfu2 installation instructions applicable model & use (1) indoor unit installation (2) cut off the part to close air flow and the packing according to the installation dimensions as shown in the right table. Be careful as the dimensions are different due to the install...

  • Page 77

    1 1-73 (4) block pattern of air outlet (seen from the unit bottom) in case of 3-way or 2-way air discharge and connecting the duct connection flange ( 150), block the air outlet according to the block pattern of air outlet as shown on the next page. Also, select the appropriate piping position refer...

  • Page 78

    1 1-74 (5) setting changes of dc fan tap make settings of the wired remote control, timer remote control or indoor unit control p.C. Board (using supplied short-circuit connector) according to separate instructions. Make settings of 3-way air discharge and 2-way air discharge according to separate i...

  • Page 79: 2.  Test Run

    2 2-1 ■ precautions regarding test run ........................................................................ 2-2 ■ checks after installation have completed ................................................... 2-3 ■ regarding delivery to the customer ...................................................

  • Page 80

    2 2-2 ■ precautions regarding test run check before test run content check power supply cable indoor/outdoor connection wire earth wire ● is the wire set up and connected as described in the instructions? Check for any phase sequence. ● are the wire connection’s screws loose? ● is the open and close...

  • Page 81

    2 2-3 run pin mode pin outdoor main pcb chk pin *mode pin: factory setting is cooling operation mode. ■ checks after installation have completed ● check the following items after completing installation. † is there a short circuit with the intake air flow? † is the insulation secure? (refrigerant pi...

  • Page 82

    3-1 3 3. Electrical data 3-1. Indoor units (electric wiring diagram) .................................................................... 3-2 4-way cassette type .............................................................................................................................. 3-2 ducted ...

  • Page 83

    3-2 3 3-1. Indoor units 4-way cassette type s-60pu1r5 / s-71pu1r5 / s-100pu1r5 / s-125pu1r5 / s-140pu1r5 electric wiring diagram 䡵 4 $ ; $4 9 4 $ ; $4 9 4 $ ; $4 9 4 $ ; $4 9 1 / / / / / #7 61 .178'4 /1 614 #7 61 .178'4 /1 614 #7 61 .178'4 /1 614 #7 61 .178'4 /1 614 (#0/1 614 4 9 $ ; $. 61 6*'176&11...

  • Page 84

    3-3 3 3-1. Indoor units ducted type s-60pe1r5 / s-71pe1r5 / s-100pe1r5 / s-125pe1r5 electric wiring diagram 䡵 elite̲pac-i̲sec1-8.Indb 3 elite̲pac-i̲sec1-8.Indb 3 2012/03/07 11:04:33 2012/03/07 11:04:33.

  • Page 85

    3-4 3 3-1. Indoor units ducted type s-140pe1r5 electric wiring diagram 䡵 elite̲pac-i̲sec1-8.Indb 4 elite̲pac-i̲sec1-8.Indb 4 2012/03/07 11:04:33 2012/03/07 11:04:33.

  • Page 86

    3-5 3 3-2. Outdoor units electric wiring diagram u-60pe1r5 / u-71pe1r5 elite̲pac-i̲sec1-8.Indb 5 elite̲pac-i̲sec1-8.Indb 5 2012/03/07 11:04:33 2012/03/07 11:04:33.

  • Page 87

    3-6 3 3-2. Outdoor units electric wiring diagram u-100pe1r5 / u-125pe1r5 / u-140pe1r5 orange o pu yellow/ green bl br p g wire color brown green yellow electric circuit diagram f223346 purple red w gr white black r y blue gra y y/g pink b 2 1 2 1 1 1 3 electro-magnetic coil f an mot or 4 1 1 n l l-i...

  • Page 88

    3-7 3 3-2. Outdoor units electric wiring diagram u-100pe1r8 / u-125pe1r8 / u-140pe1r8 sec3.Indd 7 2012/02/28 11:58:20 elite̲pac-i̲sec1-8.Indb 7 elite̲pac-i̲sec1-8.Indb 7 2012/03/07 11:04:33 2012/03/07 11:04:33.

  • Page 89

    – memo – 3-8 elite̲pac-i̲sec1-8.Indb 8 elite̲pac-i̲sec1-8.Indb 8 2012/03/07 11:04:33 2012/03/07 11:04:33.

  • Page 90: 4.  Control Functions

    4-1 4 4-1. Room temperature control .......................................................................................... 4-2 4-2. Heating standby ............................................................................................................ 4-4 4-3. Automatic fan speed control .....

  • Page 91

    4-2 4 4-1. Room temperature control the body sensor or remote controller sensor detects temperature in the room. The detected temperature is called the room temperature. The body sensor is the one contained in the indoor unit. Body sensor is enabled remote controller sensor is enabled set temp. Set ...

  • Page 92

    4-3 4 remote controller sensor is enabled set temp. In remote controller 28℃ 28℃ 28℃ detected temp. By sensor 30.0℃ 27.5℃ 27.0℃ detected temp. By body sensor 30.0℃ 27.5℃ 27.0℃ detected temp. By remote controller sensor 30.0℃ 27.5℃ 27.0℃ room temp. = temp. Detected by remote controller sensor 30.0℃ =...

  • Page 93

    4-4 4 4-2. Heating standby in heating mode, the indoor fan speed decreases to prevent cold air discharge from the indoor unit. During this time, (heating standby) is displayed on the remote controller. ① this condition occurs in the following cases. ・ thermostat off ・ defrosting operation ・ indoor h...

  • Page 94

    4-5 4 4-3. Automatic fan speed control ① the indoor fan mode is controlled as shown below during the automatic fan mode. ② the fan mode does not change for 3 minutes during cooling operation and 1 minute during heating operation once it is changed. ③ the values in the parenthesis are when the remote...

  • Page 95

    4-6 4 4-4. Drain pump control the drain pump operates in the following conditions. ① cooling thermostat on ② the fl oat switch worked. ③ the drain pump may often operate for a while when the cooling thermostat turns off or the indoor unit is stopped. ④ the drain pump can be turned on when the coolin...

  • Page 96

    4-7 4 4-5. Automatic heating/cooling control ① the operating mode is selected according to the set temperature and room temperature when the operation is started. Room temperature > set temperature in remote controller – 1˚c → cooling mode room temperature → heating mode ② the set temperature is cor...

  • Page 97

    4-8 4 4-6. Automatic flap control the flap position can be selected from 5 positions. Operating mode flap position cooling/dry f1 ・f2・f3 fan f1 ・f2・f3・f4・f5 heating f1 ・f2・f3・f4・f5 ① the fl ap moves to the following position automatically when the indoor unit is stopped. F0 (close): types k1, t1, u1...

  • Page 98

    4-9 4 4-8. Fan control during dry mode the fan control during dry mode is as follows. A a b fan mode set temp. In remote controller +1 -1 t (deg) a: fan mode set in the remote controller b: fan mode is l during thermostat on, ll during thermostat off for details on t, refer to “4-1. Room temperature...

  • Page 99

    4-10 4 4-11. Parameter type model correction temp. (heating) heat/cool switching correction temp. (automatic heat/cool) setting at time of factory shipment setting at time of factory shipment u1 4-way cassette 4 deg 2 deg e1 ducted 4 deg 2 deg sec4.Indd 10 sec4.Indd 10 2012/03/07 17:35:20 2012/03/07...

  • Page 100

    4-11 4 4-12. Outdoor units control pcb 4-12-1. Single-phase unit cr-pcb a746894 (u-60pe1r5, u-71pe1r5) a.Add mode d303 (led2) d302 (led1) s003 jp001 terminal s002 cn-opt1 cn-opt2 emg plug (cn-emg) silent (cn- silent) test run stop led for eeprom memory ic (d330) power led (d514) outdoor air temp (cn...

  • Page 101

    4-12 4 4-12-1. Single-phase unit (continued) cr-pcb a746844 (u-100pe1r5) a.Add mode d303 (led2) d302 (led1) s003 jp001 terminal s002 cn-opt1 cn-opt2 emg plug (cn-emg) silent (cn- silent) test run stop led for eeprom memory ic (d330) power led (d514) outdoor air temp (cn-to) comp discharge temp (cn-t...

  • Page 102

    4-13 4 4-12-1. Single-phase unit (continued) cr-pcb a746845 (u-125pe1r5, u-140pe1r5) a.Add mode d303 (led2) d302 (led1) s003 jp001 terminal s002 cn-opt1 cn-opt2 emg plug (cn-emg) silent (cn- silent) test run stop led for eeprom memory ic (d330) power led (d514) outdoor air temp (cn-to) comp discharg...

  • Page 103

    4-14 4 hic-pcb a746895 (u-60pe1r5, u-71pe1r5) cn-vdc+ u p v w n cn-vdc- 4way valve (cn-20s) 䡵 sec4.Indd 14 sec4.Indd 14 2012/03/07 17:35:23 2012/03/07 17:35:23.

  • Page 104

    4-15 4 hic-pcb (continued) a746846 (u-100pe1r5) cn-vdc+ u v w cn-vdc- 4way valve (cn-20s) p nu 䡵 sec4.Indd 15 sec4.Indd 15 2012/03/07 17:35:24 2012/03/07 17:35:24.

  • Page 105

    4-16 4 hic-pcb (continued) a746847 (u-125pe1r5, u-140pe1r5) cn-vdc+ u v w cn-vdc- 4way valve (cn-20s) p nu 䡵 sec4.Indd 16 sec4.Indd 16 2012/03/07 17:35:25 2012/03/07 17:35:25.

  • Page 106

    4-17 4 4-12-2. 3-phase unit cr-pcb a746967 (u-100pe1r8, u-125pe1r8, u-140pe1r8) a.Add mode d303 (led2) d302 (led1) s003 jp001 test terminal cn-pry2 cn-pry1 s002 pump down run stop chk cn-opt1 cn-opt2 emg plug (cn-emg) silent (cn- silent) led for eeprom memory ic (d330) power led (d514) high-pressure...

  • Page 107

    4-18 4 hic-pcb a746969 (u-100pe1r8, u-125pe1r8, u-140pe1r8) u p cn-vdc+ cn-vdc- v w nu 4way valve (cn-20s) 䡵 sec4.Indd 18 sec4.Indd 18 2012/03/07 17:35:28 2012/03/07 17:35:28.

  • Page 108

    4-19 4 cn-a.Add • • • • setting if wiring is connected only to an outdoor unit and indoor units in a single system and the inter-unit control wiring does not cross multiple systems. • the setting is “1” at the time of shipment. It is not necessary to change the if wiring links the inter-unit control...

  • Page 109

    4-20 4 • • • • • • • pump down stop run power led (d330) (cn-run) (cn-stop) (cn-pumpdown) (cn-mode) (cn-test) (cn-chk) led 1 (d302) led 2 (d303) mode change test chk led (red × 2) led 1 and 2 blink alternately while automatic address setting is in progress. Display the alarm contents for alarms that...

  • Page 110

    4-21 4 f f o f f o 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 off off off off off off off off off on on on on on on on on on on off off off off off off off off off off on off off off off off off off o...

  • Page 111

    4-22 4 • causes and corrections in instances when automatic address setting cannot be started. • causes and corrections in instances when automatic address setting starts, but cannot be completed successfully. • if alarm e15, e16, or e20 appears after automatic address setting is started, check the ...

  • Page 112

    4-23 4 5 1 e 6 1 e 0 2 e check items check that the indoor unit power is turned on. Check that the inter-unit control wiring is connected correctly. (check that there are no open circuits, short circuits, terminal plugs, incorrect wiring to the remote controller terminals, or similar problems.) chec...

  • Page 113

    4-24 4 • the outdoor unit maintenance remote controller can be used to check the alarm display. The number of times that led 1 and 2 blink on the outdoor unit control pcb can be used to check the alarm display. (refer to "checking the led 1 and 2 alarm display on the outdoor unit control pcb.") alar...

  • Page 114: 5.  Trouble Diagnosis

    5-1 5 5. Trouble diagnosis 5-1. Contents of remote controller switch alarm display .......................................... 5-2 5-2. Outdoor unit control panel led display ................................................................ 5-4 5-3. Pac-i system alarm codes ..............................

  • Page 115

    5-2 5 5-1. Contents of remote controller switch alarm display contents of alarm display on remote controller (only outdoor unit) wired remote controller display wireless remote controller lamp display cause correction outdoor unit failed to receive serial communication signals from indoor unit check...

  • Page 116

    5-3 5 wired remote controller display cause correction ac power supply trouble alarm valve open valve blockage compressor overcurrent trouble outdoor unit fan motor trouble lack of inv compressor wiring, inv compressor actuation failure (including locked) due to dcct failure insufficient gas level d...

  • Page 117

    5-4 5 5-2. Outdoor unit control panel led display contents of led display on outdoor unit control pcb normal operation eeprom error (f31) pre-trip (insufficient gas) pre-trip (other) automatic address setting automatic address setting in progress automatic address setting alarm (e15) automatic addre...

  • Page 118

    5-5 5 5-3. Pac-i system alarm codes alarm code alarm meaning e01 e02 e03 e04 e05 e06 outdoor unit failed to receive serial communication signals from indoor unit error in indoor unit transmitting signal to the outdoor unit error in indoor unit receiving signal from the outdoor unit error in indoor u...

  • Page 119

    5-6 5 symptoms and parts to inspect remote controller alarm display alarm contents judgement conditions eliminating condition of alarm judgement and correction p03 abnormal discharge temperature error • discharge temp. Detected at or above the specified value stops when temp. Exceeds 106 . Alarm out...

  • Page 120

    5-7 5 check prior to auto address setting if an outdoor unit displays an alarm, conduct this process after diagnosing the problem. 2 3 2-2 connect the wiring has the wiring of the indoor/outdoor control line been completed? Is it all connected? Is the power of the indoor unit(s) and outdoor unit(s) ...

  • Page 121

    5-8 5 e01 remote controller reception error (when indoor unit(s) are connected) error detection method error diagnosis it is judged an error if no self-addressed communication is sent to the remote controller in a 3-minute period. When a remote controller is set to sub remote controller. When there ...

  • Page 122

    5-9 5 test pin option chk pin rc rc eeprom eeprom test pin option chk pin a746802 a746803 4-way cassette type indoor unit control board duct type indoor unit control board sec5.Indd 9 sec5.Indd 9 2012/03/09 20:42:55 2012/03/09 20:42:55.

  • Page 123

    5-10 5 e02 remote controller transmission error error detection method error diagnosis when the remote controller itself cannot transmit. Or when it cannot receive the signal it transmitted itself, or when they are different and judged an error. Malfunction of the remote controller itself (transmit ...

  • Page 124

    5-11 5 2 power on 1-3 is the central control unit’s powered off? Is the central control unit connected? 1-1 1-2 replace wireless remote control parts including wiring. Is there a short, miswiring, open, wrong contact or grounding in the remote control’s wiring? 3-3 3-4 disconnect the connector menti...

  • Page 125

    5-12 5 sm830195-01̲mini vrf sys.Indb 11 2011/12/20 16:32:10 test pin option chk pin rc rc eeprom eeprom test pin option chk pin a746802 a746803 4-way cassette type indoor unit control board duct type indoor unit control board sec5.Indd 12 sec5.Indd 12 2012/03/09 20:43:01 2012/03/09 20:43:01.

  • Page 126

    5-13 5 sm830195-01̲mini vrf sys.Indb 11 2011/12/20 16:32:10 2 power on 2-1 is the indoor unit powered off? Is/was the power to the outdoor unit cut off? 1-1 1-2 disconnect the connector mentioned above on the control pc board of the indoor unit control pc board, and see whether the e04 goes off afte...

  • Page 127

    5-14 5 • • regarding the remote controller check, refer to the reference materials. For information on the procedures for replacing the nonvolatile memory (eeprom) of the indoor unit and/or replacing the indoor unit’s control board, refer to the manual that is packaged with the indoor unit service b...

  • Page 128

    5-15 5 e05 error in indoor unit transmitting signal to the outdoor unit error detection method error diagnosis it is judged an error when a unit itself cannot receive a signal that it has sent. Indoor unit control pc board error the setting of the terminal resistor select switch on the outdoor unit ...

  • Page 129

    5-16 5 e06 outdoor unit failed to receive serial communication signals from indoor unit error detection method (when indoor unit(s) are connected) error diagnosis it is judged an error when there is no transmission (reply) from the indoor unit to the outdoor unit for a period of three minutes. 1. 2....

  • Page 130

    5-17 5 e07 outdoor unit sending failure to indoor unit error detection method error diagnosis it is judged an error when a unit itself cannot receive (discrepancy) a signal within a 3-minute period that it had sent. Outdoor main pc board error the setting of the terminal resistor select switch on th...

  • Page 131

    5-18 5 e08 duplicate indoor unit address settings error error detection method error diagnosis it is judged an error if the addresses of indoor units are duplicated. For information on the procedures for replacing the nonvolatile memory (eeprom) of the indoor unit, refer to the manual that is packag...

  • Page 132

    5-19 5 e09 more than one remote controller set to main error error detection method error diagnosis it is judged an error when more than one remote controller in a remote control group is set as the main remote controller. Forgot to set one remote controller to sub in a 2-remote control group. When ...

  • Page 133

    5-20 5 e12 automatic address setting start is prohibited while auto-address setting in progress. Error detection method error diagnosis it is judged an error if a command to start auto address setting comes from another controller during auto address setting. For information on the procedures for re...

  • Page 134

    5-21 5 e14 main unit duplication in simultaneous-operation multi control (detected outdoor unit) error detection method failure diagnosis it is judged an error that the main units are duplicated in the indoor unit group. Main unit setting was made in the indoor unit group control setting of the remo...

  • Page 135

    5-22 5 e15 automatic address alarm (capacity too low) error detection method it is judged an error the total capacity of indoor units replied by communication is fewer than that of outdoor units. (this is detected even when auto address setting is not used. ) connecting indoor unit the total capacit...

  • Page 136

    5-23 5 e16 automatic address alarm (capacity too high) error detection method error diagnosis it is judged an error the total capacity of indoor units replied by communication is more than that of outdoor units. (this is detected even when auto address setting is not used. ) 1. 2. 1 the total capaci...

  • Page 137

    5-24 5 2 remove the short 2-1 are the chk pin, test pin and disp pin on the indoor unit control pc board short-circuited? Is the indoor unit powered off? 1-1 1-2 3-4 is the remote control group’s wiring opened? 2-1 is the wiring of the remote control group wired according to the wiring diagram? 2-3 ...

  • Page 138

    5-25 5 e20 no indoor units connected error detection method error diagnosis it is judged an error if an indoor unit cannot be recognized at the start of auto address setting or when the outdoor unit is turned on. 1. 2. The indoor unit is not turned on. • the address(es) of indoor unit(s) are not ass...

  • Page 139

    5-26 5 f04 compressor discharge temperature sensor (td) trouble error detection method error diagnosis it is judged an error based on the criteria listed below. Open circuit or short circuit when compressor stopped temporally, even after 20 minutes passed, over 103°c of discharge temperature is dete...

  • Page 140

    5-27 5 f06 inlet temperature sensor (c1) in heat exchanger trouble error detection method error diagnosis 1. 2. In case of open or short • outdoor unit control pcb failure replace pcb with a new one. Is the connector properly connected to pcb? 1-1 is the resistor between the sockets infinity or 0Ω? ...

  • Page 141

    5-28 5 f07 intermediate temperature (c2) in heat exchanger trouble error detection method error diagnosis it is judged an error when open circuit or short circuit. 1. 2. Sensor connector is connected to pc board properly. 1-1 1-2 reconnect and check yes no 1 sensor 2 pc board replace pc board becaus...

  • Page 142

    5-29 5 f08 outdoor air temperature sensor (to) trouble error detection method 1. It is judged an error when open circuit or short circuit. Error diagnosis 2. Sensor connector is connected to pc board properly. 1-1 1-2 reconnect and check yes no 1 sensor 2 pc board replace pc board because of outdoor...

  • Page 143

    5-30 5 f12 compressor inlet suction temperature sensor (ts) trouble error detection method error diagnosis it is judged an error when open circuit or short circuit. 1. 2. Sensor connector is connected to pc board properly. 1-1 1-2 reconnect and check yes no 1 sensor 2 outdoor control pc board replac...

  • Page 144

    5-31 5 f31 outdoor unit nonvolatile memory (eeprom) trouble error detection method error diagnosis it is judged an error based on the criteria listed below. When power initially turned on for the first time, nonvolatile memory (eeprom) is not installed. Read values after writing onto nonvolatile mem...

  • Page 145

    5-32 5 check power supply 1-3 extreme voltage fluctuations not satisfied with +10% rated supply voltage 1-1 1-2 extreme distortion of voltage waveform 1-3 instantaneous blackout may sometimes occur. 1-4 check power supply 1-2 check power supply 1-4 check power supply 2-1 yes yes yes yes no no no no ...

  • Page 146

    5-33 5 h02 pam trouble (single-phase only) error detection method error diagnosis error is detected by over-voltage and overcurrent of dc side. 1. 2. • 1-1 1-2 1-3 1-2 check power supply 1-3 yes no 1 power supply* yes no 2-1 2-2 2-3 correct connection 2-2 correct connection or wiring 2-3 yes no 2 pc...

  • Page 147

    5-34 5 turn the power on again and run the outdoor unit. Is alarm occurred after operation? 1-1 replace cr board. See what happens. Yes no 1 check the control pc board h03 primary current ct sensor (current sensor) failure error detection method error diagnosis if 18a or greater is detected when the...

  • Page 148

    5-35 5 h05 sensor failure, compressor discharge temperature sensor (td) disconnected error detection method (in case of outdoor temperature over 5°c) for 10 minutes since started, variation of discharge temperature is always detected within 2°c comparing with the temperature just before starting. 1....

  • Page 149

    5-36 5 h31 hic trouble error detection method error diagnosis hic overcurrent due to hic fault 1. 2. • hic abnormal heat caused by defective hic or hic radiation error • signal line is not connected properly or opened between the hic and the outdoor cr board. • measure with an analog tester. (set to...

  • Page 150

    5-37 5 excepting the parts of “ value is “0 = short-circuit”. ”, it is acceptable if a small resistance value appears as a reference value unless the • tester terminals - resistance value (ohm) u 1 k to 10 k v 1 k to 10 k w 1 k to 10 k u 1 k to 10 k v 1 k to 10 k w 1 k to 10 k hic- 5 k to 20 k u 20 ...

  • Page 151

    5-38 5 outdoor unit control hic pcb outdoor unit control pcb a746895 : (u-60pe1r5, u-71pe1r5) (for single-phase outdoor unit hic pcb) (for single-phase outdoor unit hic pcb) a746847 : (u-125pe1r5, u-140pe1r5) (for single-phase outdoor unit hic pcb) (for 3-phase outdoor unit pcb) a746846 : (u-100pe1r...

  • Page 152

    5-39 5 l04 outdoor unit address duplication error detection method error diagnosis it is judged an error when the identical self-address communication on the indoor and outdoor wirings is received over 5 times within 3 minutes. 1. 2. Are other outdoor units using a duplicate setting? 1-1 2-1 2-2 yes...

  • Page 153

    5-40 5 was eeprom replaced when pc board was replaced? 1-1 2-1 replace eeprom yes no 1 check the control pc board l10 outdoor unit capacity not set error detection method error diagnosis 1. 2. Set an applicable capacity value on the item code 81 display of maintenance remote controller. 2-1 2 instal...

  • Page 154

    5-41 5 l13 indoor unit type setting error error detection method 1. Are models for outdoor and indoor units matched respectively? (ex: are multiple indoor units connected to commercial outdoor units?) 1-1 2-1 replace indoor units. Yes no 3-1 change installation. Yes no 2 check the indoor unit’s moto...

  • Page 155

    5-42 5 l18 4-way valve operation failure error detection method error diagnosis it is judged an error when during heating operation (comp. On), the highest detected temperature at an outdoor unit heat exchanger (c1) was 20°c or more above the outdoor air temperature (air temp.) continuously for 5 mi...

  • Page 156

    5-43 5 p03 compressor discharge temperature trouble error detection method error diagnosis 1. 2. When the discharge temperature is over 106°c. • 1-1 1-2 2-1 2-2 adjust the refrigerant amount replace cr board yes no 1 adjustment to refrigerant charge yes no 2-2 2-3 2-4 avoid clogging 2-3 2-4 replace ...

  • Page 157

    5-44 5 the socket of the high pressure switch is securely inserted in the pc board. The wiring is not opened. 1-1 1-2 correct connection and/or wiring yes no even if parts near the high pressure switch are shaken quite a lot, the high pressure cutoff will be activated. Even if the covering is in goo...

  • Page 158

    5-45 5 the intake temperature (ambient temperature) of the indoor unit is above 36°c. 3-6 prevent air short circuit 3-7 yes no the filter of the indoor unit is clogged. 3-7 clean the filter 3-8 yes no the fan of the indoor unit is broken or the fan motor is faulty. 3-8 replace the indoor fan (motor)...

  • Page 159

    5-46 5 1-1 1-4 : single-phase model 1-2 : 3-phase model 3-1 : single-phase model 2-1 : 3-phase model check for open circuit and the voltage at the breaker. If a problem is found, fix it and check again. Yes no turn the power back on and check again. Is the alarm triggered again? 1-4 2-1 power wiring...

  • Page 160

    5-47 5 p13 alarm valve open error detection method error diagnosis 1. 2. Detection is performed only in the test run. When once detected or the test run finished without any error, the second detection will not be done. In case of forgetting to open a valve, p04 (high-pressure switch operational ala...

  • Page 161

    5-48 5 1-1 3-1 2-1 yes no 1 system configuration is the indoor eeprom setting, item code 0b, on the indoor unit’s control pc board set to 0001? 2-1 after correcting the setting, 3-1 4-1 yes no 2 indoor unit’s eeprom setting p14 o 2 sensor detect error detection method error diagnosis it is judged an...

  • Page 162

    5-49 5 f f o f f o 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 off off off off off off off off off on on on on on on on on on on off off off off off off off off off off on off off off off off off off o...

  • Page 163

    5-50 5 p16 compressor overcurrent trouble check of content 2. Meaning of alarm 1. Single-phase model (2.5hp – 3hp) : trip current = 23.0 a single-phase model (4hp – 6hp) : trip current = 27.0 a single-phase model (4hp – 6hp) : trip current = 45.0 a peak single-phase model (2.5hp – 3hp) : trip curren...

  • Page 164

    5-51 5 outdoor air intake temperature is high. 4-1 take measures 4-2 yes no may be caused by poor outdoor unit air flow (dirty or clogged heat exchanger, blocked discharge port, etc.) 4-2 correct 4-3 yes no air short circuit has occurred. This is a phenomenon when discharged air (exhaust heat) from ...

  • Page 165

    5-52 5 replace the hic pc board and operate the unit. (apply putty and screws must not be loose) does it operate normally? 9-1 see what happens. 10-1 yes no replace the control pc board and operate the unit. 10-1 see what happens. 9 check the hic pc boards 10 check the outdoor unit main pc board (ch...

  • Page 166

    5-53 5 outdoor unit control hic pcb a746895 : (u-60pe1r5, u-71pe1r5) (for single-phase outdoor unit hic pcb) (for single-phase outdoor unit hic pcb) a746847 : (u-125pe1r5, u-140pe1r5) (for single-phase outdoor unit hic pcb) (for 3-phase outdoor unit pcb) a746846 : (u-100pe1r5) a746967 : (u-100pe1r8,...

  • Page 167

    5-54 5 1-1 2-1 correct the connector connections yes no 3-1 replace the outdoor fan motor yes no 1 wiring 2 disconnect the connectors “cn-fma”, “cn-fmb”, “cn-fm1”, and “cn-fm2” from the outdoor control pc board and rotate the outdoor fan by hand; does it rotate freely? (check the outdoor fan motor l...

  • Page 168

    5-55 5 p29 lack of inv compressor wiring, inv compressor actuation failure (including locked) due to dcct failure error diagnosis 2. Error detection method 1. Abnormal current is detected at dcct before start-up. Open-wire of compressor and/or backspin detected. • start-up failed during overcurrent ...

  • Page 169

    5-56 5 1-1 1 other indoor unit p31 group control error error detection method other indoor unit alarms within the group. • 1. Survey the indoor unit that alarms other than “p31” in the indoor unit group and specify the causes of failure. Sec5.Indd 56 sec5.Indd 56 2012/03/09 20:44:37 2012/03/09 20:44...

  • Page 170

    5-57 5 outdoor unit control hic pcb a746895 : (u-60pe1r5, u-71pe1r5) (for single-phase outdoor unit hic pcb) (for single-phase outdoor unit hic pcb) a746847 : (u-125pe1r5, u-140pe1r5) (for single-phase outdoor unit hic pcb) (for 3-phase outdoor unit pcb) a746846 : (u-100pe1r5) a746967 : (u-100pe1r8,...

  • Page 171

    5-58 5 5-4. Inspection of parts (outdoor unit) (1) electronic control valve (mov1) mov1: measure the voltage between plug pin 5 and pins 1 through 4 at the cn-mov1 connector (5p, white) on the outdoor unit control pcb. (because of the pulse output, a simplified measurement method is used. Set the te...

  • Page 172

    5-59 5 5-5. Symptom: thermostat in off continues or cycles off & on too frequently 1-1 adjust setting temperature 1-2 yes no connect correctly 1-3 yes no 1 check if the sensors are connected correctly. Are all connection made properly? Room temp. (ta) in yellow, heat exchanger (e1) in red, heat exch...

  • Page 173: – Memo –

    – memo – 5-60 sec5.Indd 60 sec5.Indd 60 2012/03/09 20:44:40 2012/03/09 20:44:40

  • Page 174

    6-1 6 6. Outdoor unit maintenance remote control 6-1. Overview .................................................................................................................. 6-2 6-2. Functions ..........................................................................................................

  • Page 175

    6-2 6 6-1. Overview what is the outdoor unit maintenance remote controller? Beginning with the dc-inv series of outdoor units, nonvolatile memory (eeprom) is used in the outdoor unit pcb. In this way, the setting switches that were located on earlier pcbs have been converted to eeprom data. This rem...

  • Page 176

    6-3 6 6-3. Normal display operations and functions normal display functions • connect the special service checker wiring to the outdoor unit pcb. The connection is shown in the fi gure below. Special service checker wiring relay connector (2p, white) pcb connector (3p, blue) remote controller assy i...

  • Page 177

    6-4 6 display (functions) • use the temperature setting and buttons to change the item code. Item code display contents remarks 00(1) outdoor unit contents (code) : off when normal blinking 8 - alarm code display at pre-trip,led (2) at initial status 01 no. Of indoor units connected in that refriger...

  • Page 178

    6-5 6 *2: 7-segment, 4-digit display for remote controller timer display the connected unit nos. Are displayed as shown below, using the 7-segment 4-digit ( ) display and the colon. — — — — — — — — 1 2 7 12 17 3 13 18 8 4 14 19 9 5 10 15 20 6 11 16 21 22 27 32 37 23 33 38 28 24 34 39 29 25 30 35 40 ...

  • Page 179

    6-6 6 6-4. Monitoring operations: display of indoor unit and outdoor unit sensor temperatures (1) press and hold the button and button simultaneously for 4 seconds or longer to switch to temperature monitor mode. During temperature monitoring, “service monitor” is lit. (the display and operations ar...

  • Page 180

    6-7 6 6-5. Monitoring the outdoor unit alarm history: display of outdoor unit alarm history displays outdoor unit alarms only. Does not display indoor unit alarms. Check the indoor unit alarm histories separately using the indoor unit remote controllers or other control device. (1) press and hold th...

  • Page 181

    6-8 6 list of item codes (some item codes cannot be set due to the type of models.) item code parameter 01 control system schedule do not set 02 control system schedule do not set 03 control system schedule do not set 04 snowfall sensor operation 0 = no sensor, control performed 1 = no sensor, contr...

  • Page 182

    6-9 6 • setting mode 2 (1) press and hold the button, button, and button simultaneously for 4 seconds or longer. (2) use the temperature setting and buttons to change the item code. The item codes and setting data are shown in the table below. (3) use the timer time and buttons to change the setting...

  • Page 183

    – memo – 6-10 sec6.Indd 10 sec6.Indd 10 2012/02/28 11:49:53 2012/02/28 11:49:53.

  • Page 184

    7 7-1. Simple settings function ........................................................................................ 7-2 7-2. List of simple setting items .................................................................................... 7-3 7-3. Detailed settings function .......................

  • Page 185

    7 7-1. Simple settings function this allows the filter lifetime, operating mode priority change, central control address, and other settings to be made for an individual or group- control indoor unit to which the remote controller used for simple settings is connected. When simple settings mode is e...

  • Page 186

    7 7-2. List of simple setting items item code item setting data no. Description filter sign on time (filter life time) 0000 not displayed 0001 150 hours 0002 2,500 hours 0003 5,000 hours 0004 10,000 hours 0005 use the filter clogging sensor. Degree of filter fouling 0000 standard (setting at time of...

  • Page 187

    7 this allows the system address, indoor unit address, and other settings to be made for the individual or group-control indoor unit to which the remote controller used for detailed settings is connected. When detailed settings mode is engaged, operation stops at the individual or group-control indo...

  • Page 188

    7 item code item setting data no. Description no. Description no. Description type 0000 1-way cassette (d1) 0001 4-way cassette (u1, y1) 0002 2-way cassette (l1) 0003 1-way cassette (d1) 0005 low silhouette ducted/ slim low static ducted (f1, m1) 0006 ducted (e1) 0007 ceiling (t1) 0008 wall mounted ...

  • Page 189

    7 item code item setting data no. Description (1b) forced thermostat on time 0000 5 minutes 0001 4 minutes cooling discharge temperature shift –010 –10°c –009 –9°c –008 –8°c 0010 10°c heating discharge temperature shift –010 –10°c –009 –9°c –008 –8°c 0010 10°c temperature shift for cooling/heating c...

  • Page 190

    7 item code item setting data no. Description automatic drain pump operation 0000 no forced operation 0001 forced operation for 1 minute 0060 continuous operation ventilation fan operation 0000 none 0001 ventilation fan operated by remote controller. Wired remote controller sensor 0000 not used. (bo...

  • Page 191

    7 item code item setting data no. Description fan tap setting (fan tap change in order to prevent drop in air discharge caused by filter installation) dc fan tap operating mode purpose 0000 standard standard (setting at shipment) 0001 high ceiling use high ceiling setting 1 (with standard panel) for...

  • Page 192

    7 item code item description 01 filter sign on time setting (filter lifetime) changes the indoor unit filter lifetime when a high-performance filter or other optional product is installed. 02 degree of filter fouling reduces the filter sign on time to 1/2 of the standard time (setting at the time of...

  • Page 193

    7 when the operating mode at the priority remote controller is changed, the operating modes of other remote controllers change as shown below. Mode change at priority remote controller operating modes at other remote controllers current mode new mode current mode new mode cooling or dry heating cool...

  • Page 194

    7 item code item description 10 unit type set when the indoor unit eeprom memory is replaced during servicing. 11 indoor unit capacity 12 system (outdoor unit) address these are not set at the time of shipping from the factory. These must be set after installation if automatic address setting is not...

  • Page 195

    7 item code item description 1f (upper limit) 20 (lower limit) change to the remote control temperature setting range cooling this setting changes the temperature range (upper limit and lower limit) which is set from the remote controller or central control device. The set upper limit must be greate...

  • Page 196

    7 (continued from previous page) item code item description 3c heat exchanger temperature for cold air discharge the heat exchanger temperature control point for prevention of cold air discharge during heating operation can be changed. 3d fan output switching the indoor unit pcb optional output for ...

  • Page 197

    7 be sure to turn the main power off before performing the steps below. (1) check the optional product that will be used from the table below. Setting no. Optional part name optional part no. [3] air-blocking material (for 3-direction discharge) cz-cfu2 air-blocking material (when a discharge duct i...

  • Page 198

    7 7-7. Remote controller servicing functions the remote controller includes a number of servicing functions. Use these as needed for test runs and inspections. List of servicing functions functions description button operation reset operation unit status test run operation with forced thermostat on ...

  • Page 199

    7 the procedure below displays the sensor temperatures from the remote controller, indoor unit, and outdoor unit on the remote controller. 1 press and hold the and buttons simultaneously for 4 seconds or longer. 2 the unit no. “x-x” (main unit no.), item code “xx” (sensor address), and servicing mon...

  • Page 200

    8 ■ warning 8-1. Warning about installation of receivers ................................................................ 8-2 8-2. Warning about installing remote controls ............................................................ 8-2 ■ optional controller (remote controller) ........................

  • Page 201

    8 ■ warning 8-1. Warning about installation of receivers the wireless remote uses a very weak infrared light for its signal, which can result in the signal not being received because of the following influences, so take care in where the unit is installed. · inverter or rapid-start type fluorescent ...

  • Page 202

    8 ■ optional controller (remote controller) wireless remote controller cz-rwsu2 / cz-rwst2 / cz-rwsl2 / cz-rwsc2 / cz-rwsy2 / cz-rwsk2 8-3. Names and functions 1 2 3 4 5 6 7 8 9 10 12 11 13 14 15 16 1. Operation display displays the operation status. (the figure shows all the statuses.) 2. Start/sto...

  • Page 203

    8 1. Receiver receives the signal sent from the remote control. This lamp is lit when the unit is operating. When an error occurs, one of the lamps flashes. When a display lamp is blinking, refer to " before requesting service ". 2. Emergency operation button display lamps when the heater is working...

  • Page 204

    8 change the batteries when the display of the remote control gets weak or if it will not work unless close to the receiver. (alkaline batteries generally last about one year.) reset hole cover when changing batteries, always use two fresh batteries of the same make. If the remote control will not b...

  • Page 205

    8 1 4 2 3 8- 6. Operation auto , heat , dry , cool , fan models that only provide the cooling function cannot operate in the auto or heating modes. Power: turn on the power of the indoor unit at least 14 hours before operation. 1. Press . 2. Press and select from among auto , heat , dry ,cool and fa...

  • Page 206

    8 8-7. Timer operation when setting the timer, make sure the current time on the remote control is accurate. The timer’s clock can only be set when the display of the remote control is on. After setting the timer, put the remote control in a place where its signal will reach the receiver of the indo...

  • Page 207

    8 8-8. Adjusting the wind direction 8-9. Operating multiple in/outdoor units simultaneously (group control) please face the flap (up-down wind direction plate) downwards. If it faces upwards, the warm air will not reach the floor level. In the heat mode please face the flap (up-down wind direction p...

  • Page 208

    8 point the transmitter of the remote control at the receiver. When the signal is received correctly it will beep once. (it beeps twice only when the unit starts operating.) the signal can be received at a distance of about 6 meters. This distance should be used only as a guide. It depends on batter...

  • Page 209

    8 matching up addresses setting remote control addresses 1. If you press and at the same time, “ ” will blink. 2. While holding down, every time you press , it cycles from all 1 2 3… set it to the receiver address switch of the indoor unit you wish to operate. 3. When you release , the address that ...

  • Page 210

    8 use [emergency operation] in the following situations when there is an urgent need. When the remote control’s batteries have failed. When the remote control is broken. When the remote control is lost. *1 figures: cz-rwsu2, cz-wrsy2 and cz-rwst2 are of receivers (inside indoor unit), cz-rwsl2 is of...

  • Page 211

    8 wind direction (flap) indicator, operation mode indicator, time display (24 hour, am/pm), heat max temp for information about the flap function, refer to the users’ manual of the unit being used. (these settings are saved in nonvolatile memory in the remote control, so even when its batteries are ...

  • Page 212

    8 before requesting service, please check the followings. Problem cause solution the unit doesn’t work even when is pressed on the remote control. The power to the indoor unit is not on. Make sure the power to the indoor unit is on. Is the normal/stop all switch in the stop all position? (see page 3...

  • Page 213

    8 8-16. Common to all models how to install the wireless remote controller receiver 1. Warnings about installation of receivers the wireless remote uses a very weak infrared light for its signal, which can result in the signal not being received because of the following influences, so take care in w...

  • Page 214

    8 cz-rwsl2 cz-rwsu2 cable clamp pcb cover adjustable corner cap receiver pcb on 1 2 3 4 bit 1: off → on s003 screw cz-rwst2 s003 bit 3: off → on dip switch 3 rcu: main → rcu: sub cz-rwsc2 8-15 sec8.Indd 15 sec8.Indd 15 2012/02/28 16:14:01 2012/02/28 16:14:01.

  • Page 215

    8 8-17. Cz-rwsu2 1. Accessories 2. Installing the receiver receiver remote control remote control holder the receiver can only be installed on the corner indicated in fig. 8-1, so consider how the panel will face when it is installed on the indoor unit. (1) remove the air inlet grill. (2) remove the...

  • Page 216

    8 3. Wiring the receiver connect the wires from the receiver to the remote control terminal strip on the indoor unit. (polarity does not matter) wiring diagram connections 4. Test operation implementing a test run 1. Turn the #1 dip switch [s003] on the receiver’s pcb from off to on and operate the ...

  • Page 217

    8 8-18. Cz-rwst2 1. Accessories 2. Installing the receiver (1) open the air inlet grill on the side panel, remove the 1 screw and then move it toward the front (direction of the arrow) and remove it. (fig. 8-6) (2) wrap the tip of a slotted screwdriver with plastic tape and then slip it in to the si...

  • Page 218

    8 unidirectional cassette model for high ceilings/unidirectional ceiling cassette model (1) while spreading the tabs of the cover, pull it out from the panel to the front. (fig. 8-10) (2) pass the lead wire through the panel and install the receiver in the hole in the panel. (the projecting parts of...

  • Page 219

    8 1. Turn the #1 dip switch [s003] on the receiver’s pcb from off to on and operate the wireless remote control with its start/stop button. 2. During a test run, all display lamps on the display will light up. 3. During a test run, it is not possible to adjust the temperature. 4. After completing a ...

  • Page 220

    8 8-19. Cz-rwsl2 1. Accessories installing the display/operation panel resin panel installing the operation panel (1) (2) (3) remove the 2 screws and remove cover a from the back of the panel. (fig. 8-15) fasten the operation panel to the location in the diagram below with the 2 enclosed screws (4 x...

  • Page 221

    8 metal panel installing the operation panel (1) (2) (3) remove the 2 screws and remove cover a from the back of the panel. (fig. 8-19) fasten the operation panel to the location in the diagram below with the 2 enclosed screws (4 x 10). (fig. 8-20) pass the wiring for the display (w2, 6p white conne...

  • Page 222

    8 4. Test operation 5. Setting address switches this is hard on the device, so only use this for the test run. After turning on the power, the unit will not receive any commands from the remote control for about 1 minute. This is not an error. (in fact it does receive signals, but they are cancelled...

  • Page 223

    8 8-20. Cz-rwsc2 1. Accessories 2. Installing the receiver when using a separately installed receiver as a built-in model, install it to the jis switch box (field supply) shown in the diagram on the right, which has been built into the wall on site in advance. (1) remove the face plate of the receiv...

  • Page 224

    8 when using a separately installed receiver as an exposed model, attach it to a wall where the receiver can be affixed. (1) put a slotted screwdriver or the like into the groove on the bottom of the receiver unit and twist it to remove the bottom of the case. (fig. 8-25) (2) to enable the receiver’...

  • Page 225

    8 when using a receiver that has been installed separately into the ceiling, use the enclosed fittings for installing to a ceiling. Fig. 8-29 fig. 8-30 fig. 8-31 part a part b (1) remove the metal plate of the receiver by slipping a slotted screwdriver or the like into the cutout on the bottom. (2) ...

  • Page 226

    8 if it is to be used as an exposed model: (1) when wiring remote controls, be sure to double-check the terminal numbers of the indoor unit connecting them so there are no mistakes in the wiring. (damage will occur if high voltage [e.G. Supply voltage] is applied.) (2) if the wiring to the operation...

  • Page 227

    8 8-21. Cz-rwsy2 1. Accessories 2. Installing the receiver unit no. Accessories quantity 1 receiver 2 1 no. Accessories quantity 3 remote control holder 1 4 aaa alkaline batteries 2 5 tapping screw 4x16 2 6 clamper 1 1 remote controller as the receiver can only be installed in the corner where the p...

  • Page 228

    8 3. Pass the wire from the wireless receiver through the grille. (fig. 8-34) 4. Fit the panel to the indoor unit and connect the wire from the receiver to the connector (cn130/wl/wht/10p) on the indoor control board. (fig. 8-35) 5. After fixing the panel in place, fit the receiver to the panel taki...

  • Page 229

    8 1. The self-diagnosis function display and what is detected 8-22. Common to all models alarm display in the table below indicates the content of alarms that are displayed when a wired remote control is connected. For information on how to deal with the alarms, refer to the mounting instructions fo...

  • Page 230

    8 3. Setting up remote control functions the operation of the air conditioner can be impacted, depending on the settings made, so only service personnel should make the settings. Furthermore, making changes to these settings may cause actual operation to deviate from what is printed in the users man...