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Panasonic S-106ME1E5 Service Manual

Other manuals for S-106ME1E5: Instruction Manual, Service Manual, Service Manual
Manual is about: 2WAY VRF SYSTEM

Summary of S-106ME1E5

  • Page 1

    85464849295004 reference no. Sm830195-04 mini vrf system outdoor unit model no. Hp = horsepower 4hp u-4le1e5 5hp u-5le1e5 6hp u-6le1e5 u-4le1e8 u-5le1e8 u-6le1e8 model name class service manual e1 high static pressure ducted indoor unit class u1 4-way cassette l1 2-way cassette d1 1-way cassette f1 ...

  • 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. Fol...

  • Page 3

    Ii 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. Fo...

  • Page 4: Contents

    Iv contents section 1: control functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 2. Compressor control . . . . ...

  • Page 5: Contents

    Iv iv contents section 1: control functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 2. Compressor control . . ....

  • Page 6: – Memo –

    V – memo – sm830195-04_mini vrf sys.Indb 6 15/01/09 16:08:16.

  • Page 7: 1.  Control Functions

    1 - 1 1 mini vrf system control functions 1. Control functions 1. Introduction .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 2. Compressor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 8

    1 - 2 1 mini vrf system control functions * outdoor unit mini vrf system is a multi system that is connected to a single outdoor unit. The outdoor unit contains an inverter compressor. To operate this system, the below settings must be made at the time of the test run. Table 1-1 table 1-2 up to a ma...

  • Page 9

    1 - 3 1 mini vrf system control functions (1) * (2) (3) (4) * 2-1. Compressors mounted on outdoor units 2-2. Compressor stop rules 2-3. Roadmap control after a compressor stops, it will not start again for a period of 3 minutes (3 minutes forced off). However, this does not apply to the special cont...

  • Page 10

    1 - 4 1 mini vrf system control functions example: 2-3-1. Roadmap control in cooling mode with this control, the below evaporation temperature control and condensation temperature control are both used. Control is performed according to the following order of priority: control order of priority area...

  • Page 11

    1 - 5 1 mini vrf system control functions horsepower (hp) limits +2 hp down +1 hp down +0.5 hp down hp increase prohibited hp increase permitted (slowly) no restriction 105 104 102 99 – less than 102 96 – less than 99 less than 96 the values shown in the table above are reduced to the values calcula...

  • Page 12

    1 - 6 1 mini vrf system control functions 2. Compressor control mini vrf system control functions 2. Compressor control (2) primary current protection the primary current protection value is divided into the cooling and heating mode. Also, the cooling of single-phase outdoor unit can be divided into...

  • Page 13

    1 - 7 1 mini vrf system control functions 2. Compressor control mini vrf system control functions 2. Compressor control (2) primary current protection the primary current protection value is divided into the cooling and heating mode. Also, the cooling of single-phase outdoor unit can be divided into...

  • Page 14

    1 - 8 1 mini vrf system control functions 3. Special controls • in addition to ordinary heating and cooling operation, this system also includes the following 4 types of special controls for control of the system as a whole: 3-1. Oil discharge prevention device control 3-1. Oil discharge prevention ...

  • Page 15

    1 - 9 1 mini vrf system control functions 3. Special controls 1 - 8 3. Special controls mini vrf system control functions (2) control in the heating mode (2-1) discharge temperature: less than 30°c (2-2) discharge temperature: over 30°c control hour outdoor unit compressor elec. Cont. Valve*4 freque...

  • Page 16

    1 - 10 1 mini vrf system control functions • • (1) 3-2. Reverse cycle start control reverse cycle start control is performed under the following conditions: the outdoor unit starts in heating mode after microcomputer initialization when the power was turned on. The outdoor unit starts in heating mod...

  • Page 17

    1 - 11 1 mini vrf system control functions 3. Special controls (a) (b) * (1) 3-4-3. Frost detection frost is not detected at the outdoor unit heat exchanger for 5 minutes after operation starts. Frost is detected when either condition 1 or 2 below is met. Condition 1: l2 line or below is detected tw...

  • Page 18

    1 - 12 1 mini vrf system control functions (1) • • (2) • 4. Other control 4-1. Indoor unit self-separator oil recovery control refer to the indoor unit special control item. 5. Operation of solenoid valves 5-1. 4-way valve control off conditions at cooling mode special control (reverse cycle start c...

  • Page 19

    1 - 13 1 mini vrf system control functions (1) (a) * (b) (2) (a) (b) (c) • after the fixed initial fan mode, the fan mode is increased or decreased according to the operating conditions. Indoor cooling operation the fan mode is increased when the pressure sensor temperature is high, and is decreased...

  • Page 20

    1 - 14 1 mini vrf system control functions (1) * (2) thermostat off thermostat on 20 pulses 20 pulses 20 pulses cooling — outdoor unit stopped fan stop outdoor unit operating mov position (pulses) 20 pulses 20 pulses 20 pulses 60 – 480 pulses performs sh control 65 – 80 pulses 65 – 80 pulses 65 – 80...

  • Page 21

    1 - 15 1 mini vrf system control functions (1) (2) * (1) (2) 8-2. During special control 9. Indoor special control 9-1. Indoor unit thermostat on/off delay timer 9-2. Indoor unit refrigerant oil self-recovery control this control is performed constantly during cooling mode operation only. When an in...

  • Page 22

    1 - 16 1 mini vrf system control functions 9. Indoor special control mini vrf system control functions 9-3. Indoor fan speed control ccu intervenes in fan control of the indoor unit according to the state at the operating mode below. The priority order of fan control by ccu is higher than that of in...

  • Page 23

    1 - 17 1 mini vrf system control functions 9. Indoor special control mini vrf system control functions eeprom setting of drain pump in main outdoor unit code: 0c indoor unit under this control setting no. Description 0 invalid all units (mode, operation / stop thermostat on / off doesn't concern) 1 ...

  • Page 24

    1 - 18 1 mini vrf system control functions 9. Indoor special control mini vrf system control functions 9-5. Discharge air temperature control 9-6. Indoor unit auto restart setting for type f1, f2, m1, e1 indoor units, discharge air temperature is controlled from the ccu to prevent condensation detai...

  • Page 25

    1 - 19 1 mini vrf system control functions • • * 10-1. Discharge gas temperature protection alarm the compressor upper-limit discharge temperature is 106°c. If the discharge temperature reaches 106°c, then the compressor stops. If the discharge temperature reaches 106°c 4 times repeatedly after rest...

  • Page 26

    1 - 20 1 mini vrf system control functions • • • 11-2. Inverter compressor 11-3. Ct circuit detection failure 12. Pressure sensor failure this system includes a high-pressure sensor. 12-1. High-pressure sensor failure connector disconnection or displacement failure is judged according to the relatio...

  • Page 27

    1 - 21 1 mini vrf system control functions 14. Servicing and maintenance functions mini vrf system control functions the below functions are available, and are selected by the outdoor unit eeprom settings. 14-1. Slime countermeasure: eeprom 0c (set only on the main unit) 14-2. Delayed start for each...

  • Page 28

    1 - 22 1 mini vrf system control functions 15. Demand control mini vrf system control functions 15. Demand control 15-1. Demand control 15-2. Demand display selection function eeprom : 1e demand terminal block (optional cz-capdc3) or seri-para i/o unit (optional cz-capdc2) must be connected in order...

  • Page 29

    1 - 23 1 mini vrf system control functions 16. Detailed settings in eeprom of outdoor unit never use the dn code unlisted in the following table. (p) : factory preset mode dn item setting no. 04 operation for using snowfall sensor 0=no sensor & control (p) 2=no sensor & no control 1=sensor & control...

  • Page 30

    1 - 24 1 mini vrf system control functions 4a forced defrosting (silent pin action) 0=silent mode (p) 1=forced defrosting 4e condensation temperature adjustment lower temperature of b area (tc_b) for cooling mode -7=-7°c 0=0°c (p) ,,,,, -6=-6°c ,,,,, 7=7°c (for detail, refer to 2-3-3) 4f condensatio...

  • Page 31: Contents

    2 - 1 2 mini vrf system outdoor unit repair procedures 2. Outdoor unit repair procedures layout diagram: sensors and solenoid valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 1. Removing panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 32

    2 - 2 2 mini vrf system outdoor unit repair procedures layout diagram: sensors and solenoid valves 2- 2 2 layout diagram: sensors and solenoid valves mini vrf system outdoor unit repair procedures ts (suction thermistor) mov (electronic motor-operated valve) 20s (4-way valve) c1 (condenser 1 thermis...

  • Page 33

    2 - 3 2 mini vrf system outdoor unit repair procedures 1. Removing panels mini vrf system outdoor unit repair procedures front panel cover a • remove the front panel (remove 3 screws). (1) front panel removal (fig. 2-1) (2) cover a removal (fig. 2-1) • remove the cover a (remove 1 screw). Fig. 2-1 1...

  • Page 34

    2 - 4 2 mini vrf system outdoor unit repair procedures condition of refrigeration cycle recover the refrigerant in the outdoor unit following the procedures in “3. Recovering refrigerant.” remove the compressor and discharge the oil in it. Refer to “7. Compressor” for detailed procedures. 2-1. Check...

  • Page 35

    2 - 5 2 mini vrf system outdoor unit repair procedures 3. Recovering refrigerant 2- 5 2 the following equipment and tools are required: jumper wire with clips, adjustable wrench, set of manifold gauge valves specially designed for refrigerant r410a only, vacuum pump, refrigerant recovery unit, pre-p...

  • Page 36

    2 - 6 2 mini vrf system outdoor unit repair procedures 3-2. Refrigerant recovery procedures (indoor unit) the flowchart below shows the refrigerant recovery procedures you must follow when replacing or repairing the indoor unit due to trouble in the refrigerant circuit. * service work performed on i...

  • Page 37

    2 - 7 2 mini vrf system outdoor unit repair procedures (1) (2) (3) (4) (5) (1) (2) (3) (4) (5) (6) 3-2-1. Cooling operation (for all units) short-circuit the test pin (cn-test) on the outdoor control pcb. Let the unit operate for a while, then check if it is running in cooling mode or heating mode b...

  • Page 38

    2 - 8 2 mini vrf system outdoor unit repair procedures refrigerant recovery unit manifold gauge lo hi refrigerant recovery cylinder ball valve (field supply) gas tube outdoor unit indoor unit liquid tube service port fig. 2-4 3. Recovering refrigerant sm830195-04_mini vrf sys.Indb 8 15/01/08 18:35:4...

  • Page 39

    2 - 9 2 mini vrf system outdoor unit repair procedures 3. Recovering refrigerant 2- 9 2 mini vrf system outdoor unit repair procedures (1) (2) (3) (4) (5) (6) (7) (8) 3-2-3. Refrigerant recovery procedures (b): for indoor unit with no ball valve refrigerant in all indoor units and the refrigerant tu...

  • Page 40

    2 - 10 2 mini vrf system outdoor unit repair procedures 4. Checking for leakage after repair 2- 10 2 mini vrf system outdoor unit repair procedures (1) (2) (3) (4) * 4-1. Pressure check for leakage of outdoor unit after completing repair of the outdoor unit, carry out the following leakage check. Ch...

  • Page 41

    2 - 11 2 mini vrf system outdoor unit repair procedures 5. Evacuating system 2- 11 2 (1) (2) (3) (4) (5) (6) this procedure is carried out to ensure there is no remaining refrigerant or other gases (nitrogen, etc.) in the repaired outdoor unit and tubing. 5-1. Evacuating repaired outdoor unit check ...

  • Page 42

    2 - 12 2 mini vrf system outdoor unit repair procedures (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) required equipment and tools: jumper wire with clips, adjustable wrench, set of manifold gauge valves, vacuum pump, refrigerant recovery unit, pre-purged refrigerant cylinder for recovery, and hex wrench...

  • Page 43

    2 - 13 2 mini vrf system outdoor unit repair procedures 6. Pumping out refrigerant from outdoor unit 2- 17 2 to determine the completion of refrigerant recovery, follow the instructions that came with the refrigerant recovery unit. Note manifold gauge lo hi connect from here to refrigerant recovery ...

  • Page 44

    2 - 14 2 mini vrf system outdoor unit repair procedures (1) (2) (a) compressor (b) unit (1) (2) (3) (4) (5) (6) 7-1. Compressor trouble diagnosis and check methods generally, compressor failures can be classified into the following categories. Mechanical trouble electrical trouble (a) locking (intru...

  • Page 45

    2 - 15 2 mini vrf system outdoor unit repair procedures (7) the connecting port includes a schrader-type, push-to-release valve. When disconnecting the hose, pressure will be applied from the refrigerant in the outdoor unit. Follow the instructions in “7-3. Dry core cleaning” and perform dry core cl...

  • Page 46

    2 - 16 2 mini vrf system outdoor unit repair procedures 7. Compressor mini vrf system outdoor unit repair procedures (18) (19) (20) (21) (1) (2) (3) (4) (5) (6) (7) (8) (9) remove dry cores. Connect the tube that runs from the liquid tube valve to the ball valve. At the outdoor unit where dry cores ...

  • Page 47

    2 - 17 2 mini vrf system outdoor unit repair procedures 7. Compressor 8. High pressure sensor (1) (2) (3) (1) 8. High pressure sensor the high pressure sensor connection port on the outdoor unit includes a schrader-type, push-to-release valve. It is not necessary to recover the refrigerant when remo...

  • Page 48: – Memo –

    2 - 18 – memo – sm830195-04_mini vrf sys.Indb 18 15/01/08 18:35:52.

  • Page 49: Contents

    3 - 1 3 mini vrf system outdoor unit maintenance remote controller 3. Outdoor unit maintenance remote controller 1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 2. Functions . . . . . . . . . . . . . . . . . ...

  • Page 50

    3 - 2 3 mini vrf system outdoor unit maintenance remote controller outdoor unit maintenance remote controller (cz-rtc2) for mini vrf system n about the outdoor unit maintenance remote controller the outdoor unit utilizes nonvolatile memory (eeprom) on its pcb. This allows eeprom data to replace the ...

  • Page 51

    3 - 3 3 mini vrf system outdoor unit maintenance remote controller n functions on the ordinary display (1) functions: button operations can be used to perform the following functions. • start/stop of all indoor units • switching between cooling and heating • test run of all indoor units (2) display:...

  • Page 52

    3 - 4 3 mini vrf system outdoor unit maintenance remote controller n functions on the ordinary display • connect the special service checker wiring to the outdoor unit pcb. The connection is shown in the figure below. L if the communications line in the inter-unit control wiring is connected, it can...

  • Page 53

    3 - 5 3 mini vrf system outdoor unit maintenance remote controller fig. 3-1 l all units start/stop (fig. 3-1) the (on/off operation) button can be used to start and stop all the indoor units. • the led illuminates if any indoor units is operating. • the led blinks if an alarm at any of the operating...

  • Page 54

    3 - 6 3 mini vrf system outdoor unit maintenance remote controller n display (functions) • use the temperature setting and buttons to change the item code. À item code Á item remarks outdoor unit alarm alarm code display no. Of connected indoor units quantity unit nos. Of connected indoor unit 7-seg...

  • Page 55

    3 - 7 3 mini vrf system outdoor unit maintenance remote controller xx-yy r.C. (fig. 3-3) displays the outdoor unit sub-bus address which is currently selected. Xx = outdoor system address on main bus line (1 – 30) yy = outdoor unit sub-bus address. “1” appears when there is only 1 outdoor unit. The ...

  • Page 56

    3 - 8 3 mini vrf system outdoor unit maintenance remote controller n concerning the 7-segment, 4-digit display remote controller timer display the unit nos. Of connected units are indicated by four 7-segment digits ( ) and a 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...

  • Page 57

    3 - 9 3 mini vrf system outdoor unit maintenance remote controller display the indoor unit and outdoor unit sensor temperatures. À press and hold the (check) button and buttons simultaneously for 4 seconds or longer to engage temperature monitor mode. During temperature monitoring, is illuminates. (...

  • Page 58

    3 - 10 3 mini vrf system outdoor unit maintenance remote controller 4. Monitoring operations mini vrf system outdoor unit maintenance remote controller 4. Monitoring operations display of unit no. 1 (main unit) s k r a m e r n o it p ir c s e d n d °c indoor unit intake temp. (ta) °c indoor unit hea...

  • Page 59

    3 - 11 3 mini vrf system outdoor unit maintenance remote controller • displays outdoor unit alarms only. • check the indoor unit alarm histories separately using the indoor unit remote controllers or other control device. À press and hold the (check) button and button simultaneously for 4 seconds or...

  • Page 60

    3 - 12 3 mini vrf system outdoor unit maintenance remote controller 6. Mode settings mini vrf system outdoor unit maintenance remote controller setting mode 1 press and hold the (check) button and (ventilation) button simultaneously for 4 seconds or longer. Press the temperature setting and buttons ...

  • Page 61

    3 - 13 3 mini vrf system outdoor unit maintenance remote controller n setting mode 2 À press and hold the (check) button, button, and button simultaneously for 4 seconds or longer. Á press the temperature setting and buttons to change the item code. The item codes and setting data are shown in the t...

  • Page 62: – Memo –

    3 - 14 – memo – sm830195-04_mini vrf sys.Indb 14 15/02/16 17:56:57.

  • Page 63: Contents

    4 - 1 mini vrf system remote controller functions 4 4. Remote controller functions 1. Simple settings function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 2. Detailed settings function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

  • Page 64

    Mini vrf system remote controller functions 4 4 4 - 2 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 s...

  • Page 65

    Mini vrf system remote controller functions 4 4 4 - 3 1. Simple settings function cz-rtc3 fig. 4-2 1 keep pressing the , and buttons simultaneously for 4 or more seconds. The “maintenance func” screen appears on the lcd display. 2 press the or button to see each menu. If you wish to see the next scr...

  • Page 66

    Mini vrf system remote controller functions 4 4 4 - 4 1. Simple settings function 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 ...

  • Page 67

    Mini vrf system remote controller functions 4 4 4 - 5 1. Simple settings function simple setting items 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 ...

  • Page 68

    Mini vrf system remote controller functions 4 4 4 - 6 1. Simple settings function item code item description 03 central control address set when using a central control device. Used when setting the central control address manually from the remote controller. 04 operating mode priority change note (...

  • Page 69

    Mini vrf system remote controller functions 4 4 4 - 7 1. Simple settings function 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 con...

  • Page 70

    Mini vrf system remote controller functions 4 4 4 - 8 2. Detailed settings function • 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 detail...

  • Page 71

    Mini vrf system remote controller functions 4 4 4 - 9 2. Detailed settings function the flap swings during the operation under "setting the flap separately". At this time, the unselected flaps are moved to the position 1 . (refer to fig. 4-4) * setting data “ ” (refer to fig. 4-4) flap position 1 5 ...

  • Page 72

    Mini vrf system remote controller functions 4 4 4 - 10 2. Detailed settings function cz-rtc3 fig. 4-5 1 keep pressing the , and buttons simultaneously for 4 or more seconds. The “maintenance func” screen appears on the lcd display. 2 press the or button to see each menu. If you wish to see the next ...

  • Page 73

    Mini vrf system remote controller functions 4 4 4 - 11 2. Detailed settings function list of detailed setting items item code item setting data no. Description no. Description no. Description type 0001 4-way cassette (60×60) (u1, y1, y2) 0002 2-way cassette (l1) 0003 1-way cassette (d1) 0005 low sil...

  • Page 74

    Mini vrf system remote controller functions 4 4 4 - 12 2. Detailed settings function mini vrf system remote controller functions 2. Detailed settings function item code item setting data description . O n (1b) forced thermostat on time 0000 5 minutes 0001 0001 4 minutes –010 –10°c –010 –10°c –009 –9...

  • Page 75

    Mini vrf system remote controller functions 4 4 4 - 13 2. Detailed settings function 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 f...

  • Page 76

    Mini vrf system remote controller functions 4 4 4 - 14 2. Detailed settings function 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 ...

  • Page 77

    Mini vrf system remote controller functions 4 4 4 - 15 2. Detailed settings function 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 th...

  • Page 78

    Mini vrf system remote controller functions 4 4 4 - 16 2. Detailed settings function mini vrf system remote controller functions 4 4 - 14 2. Detailed settings function description item item code 1f (upper limit) 20 (lower limit) change to the remote control temperature setting range cooling this set...

  • Page 79

    Mini vrf system remote controller functions 4 4 4 - 17 2. Detailed settings function (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 operati...

  • Page 80

    Mini vrf system remote controller functions 4 4 4 - 18 2. Detailed settings function 2way system remote controller functions 2. Detailed settings function selecting the dc fan motor tap (when setting with the remote controller) stop the system before performing these steps. Press and hold the , and ...

  • Page 81

    Mini vrf system remote controller functions 4 4 4 - 19 2. Detailed settings function 2way system remote controller functions 2. Detailed settings function selecting the dc fan motor tap (when setting with the remote controller) stop the system before performing these steps. Press and hold the , and ...

  • Page 82

    Mini vrf system remote controller functions 4 4 4 - 20 2. Detailed settings function selecting the dc fan motor tap (when setting from the pcb) 1-way cassette type be sure to turn off the main power source before performing the steps below. Open the electrical component box cover, then check the ind...

  • Page 83

    4 4 mini vrf system remote controller functions 4 - 21 3. Remote controller servicing functions 2way system remote controller functions 3. Remote controller servicing functions the remote controller includes a number of servicing functions. Use these as needed for test runs and inspections. List of ...

  • Page 84

    Mini vrf system remote controller functions 4 4 4 - 22 3. Remote controller servicing functions display of "maintenance function" screen 1 keep pressing the , and buttons simultaneously for 4 or more seconds. The “maintenance func” screen appears on the lcd display. 2 press the or button to see each...

  • Page 85

    Mini vrf system remote controller functions 4 4 4 - 23 3. Remote controller servicing functions display of "maintenance function" screen 1 keep pressing the , and buttons simultaneously for 4 or more seconds. The “maintenance func” screen appears on the lcd display. 2 press the or button to see each...

  • Page 86

    Mini vrf system remote controller functions 4 4 4 - 24 3. Remote controller servicing functions n sensor temperature display function (displayed regardless of whether unit is operating or stopped) the procedure below displays the sensor temperatures from the remote controller, indoor unit, and outdo...

  • Page 87

    Mini vrf system remote controller functions 4 4 4 - 25 3. Remote controller servicing functions 1 keep pressing the , and buttons simultaneously for 4 or more seconds. The “maintenance func” screen appears on the lcd display. 2 press the or button to see each menu. If you wish to see the next screen...

  • Page 88

    Mini vrf system remote controller functions 4 4 4 - 26 3. Remote controller servicing functions mini vrf system remote controller functions 3. Remote controller servicing functions location where sensor is installed sensor address sensor type sensor type indoor unit indoor unit intake temp. (ta) ind...

  • Page 89: 5.  Trouble Diagnosis

    5 - 1 5 mini vrf system trouble diagnosis 5. Trouble diagnosis contents 5. Trouble diagnosis 1. Contents of remote controller switch alarm display . . . . . . . . . . . . . . . . . . . . . . . . 5-2 2. Outdoor unit control panel led display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

  • Page 90

    5 - 2 5 mini vrf system trouble diagnosis 1. Contents of remote controller switch alarm display mini vrf system trouble diagnosis 1. Contents of remote controller switch alarm display remote controller is detecting error signal from indoor unit. Indoor unit is detecting error signal from outdoor uni...

  • Page 91

    5 - 3 5 mini vrf system trouble diagnosis 1. Contents of remote controller switch alarm display mini vrf system trouble diagnosis 1. Contents of remote controller switch alarm display remote controller is detecting error signal from indoor unit. Indoor unit is detecting error signal from outdoor uni...

  • Page 92

    5 - 4 5 mini vrf system trouble diagnosis 2. Outdoor unit control panel led display led1 led2 d302 d303 (both on) (off) (on) (both off) ( : on : blinking : off ) display meaning (blinking alternately) (both blinking) (blinking alternately) after the power is turned on (and automatic address setting ...

  • Page 93

    5 - 5 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 6 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes alarm code alarms for outdoor units alarm meaning e01 e02 e03 e04 e05 e06 error in the outdoor unit receiving signal from the indoor unit error in indoor ...

  • Page 94

    5 - 6 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 7 5 4. Mini vrf system alarm codes mini vrf system trouble diagnosis checks 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 h...

  • Page 95

    5 - 7 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 8 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes e01 remote controller reception error (when indoor unit(s) are connected) error detection method error diagnosis it is judged an error if no self-addresse...

  • Page 96

    5 - 8 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 4. Mini vrf system alarm codes mini vrf system trouble diagnosis led option chk pin dc motor model indoor unit control board test pin led chk pin ac motor model indoor unit control board option regarding the pcb photos for indi...

  • Page 97

    5 - 9 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes mini vrf system trouble diagnosis 4. Mini vrf system alarm codes e02 remote controller transmission error error detection method error diagnosis when the remote controller itself cannot transmit. Or when it cannot receive the s...

  • Page 98

    5 - 10 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 11 5 4. Mini vrf system alarm codes mini vrf system trouble diagnosis 2 power on 1-3 is the central control unit’s powered off? Is the central control unit connected? 1-1 1-2 replace all optional control pc board and/or wi...

  • Page 99

    5 - 11 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 12 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes ac motor model indoor unit control pc board dc motor model indoor unit control pc board option rc option rc regarding the pcb photos for individual indo...

  • Page 100

    5 - 12 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 13 5 4. Mini vrf system alarm codes mini vrf system trouble diagnosis 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 con...

  • Page 101

    5 - 13 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes mini vrf system trouble diagnosis 4. Mini vrf system alarm codes the ‘/’ in the table indicates the dc motor’s indoor unit board/ac motor’s indoor unit board. • there is no test pin on the ac motor’s indoor unit board. • regar...

  • Page 102

    5 - 14 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 15 5 4. Mini vrf system alarm codes mini vrf system trouble diagnosis 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 ...

  • Page 103

    5 - 15 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes mini vrf system trouble diagnosis 4. Mini vrf system alarm codes e06 error in the outdoor unit receiving signal from the indoor unit error detection method (when indoor unit(s) are connected) error diagnosis it is judged an er...

  • Page 104

    5 - 16 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 17 5 4. Mini vrf system alarm codes mini vrf system trouble diagnosis e07 error in outdoor unit transmitting signal to the indoor unit error detection method error diagnosis it is judged an error when a unit itself cannot ...

  • Page 105

    5 - 17 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes mini vrf system trouble diagnosis 4. Mini vrf system alarm codes 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. Th...

  • Page 106

    5 - 18 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 19 5 4. Mini vrf system alarm codes mini vrf system trouble diagnosis 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 ...

  • Page 107

    5 - 19 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 20 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes e12 start of auto address setting prohibited due to auto address setting being in progress error detection method error diagnosis it is judged an error ...

  • Page 108

    5 - 20 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 4. Mini vrf system alarm codes mini vrf system trouble diagnosis e15 auto-address alarm (not enough units) error detection method it is judged an error not enough indoor units reply to communications and this is determined fro...

  • Page 109

    5 - 21 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 22 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes e16 auto-address alarm (too many units) error detection method error diagnosis it is judged an error when there are too many indoor units that reply to ...

  • Page 110

    5 - 22 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 4. Mini vrf system alarm codes mini vrf system trouble diagnosis 2 remove the short 2-1 are the chk pin, test pin and/or disp pin on the indoor unit control pc board short-circuited? Is the indoor unit powered off? 1-1 1-2 3-4...

  • Page 111

    5 - 23 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 24 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes e20 no indoor units error error detection method error diagnosis it is judged an error if an indoor unit cannot be recognized at the start of auto addre...

  • Page 112

    5 - 24 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 25 5 4. Mini vrf system alarm codes mini vrf system trouble diagnosis replace the control pc board of the outdoor unit. Is the power to the control pc board of the outdoor unit on? Check the led. 1-1 1-2 1-2 (turn the powe...

  • Page 113

    5 - 25 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes mini vrf system trouble diagnosis 4. Mini vrf system alarm codes f04 compressor discharge temperature sensor error error detection method error diagnosis it is judged an error based on the criteria listed below. Open circuit o...

  • Page 114

    5 - 26 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes mini vrf system trouble diagnosis 4. Mini vrf system alarm codes f07 heat exchanger inlet temperature sensor (c1) error error detection method error diagnosis it is judged an error when open circuit or short circuit. 1. 2. Sen...

  • Page 115

    5 - 27 5 mini vrf system trouble diagnosis mini vrf system trouble diagnosis 4. Mini vrf system alarm codes f07 heat exchanger inlet temperature sensor (c1) error error detection method error diagnosis it is judged an error when open circuit or short circuit. 1. 2. Sensor connector is connected to p...

  • Page 116

    5 - 28 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 30 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes f12 compressor intake temperature sensor (ts) error error detection method error diagnosis it is judged an error when open circuit or short circuit. 1. ...

  • Page 117

    5 - 29 5 mini vrf system trouble diagnosis 5 - 30 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes f12 compressor intake temperature sensor (ts) error error detection method error diagnosis it is judged an error when open circuit or short circuit. 1. 2. Sensor connector is connecte...

  • Page 118

    5 - 30 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes mini vrf system trouble diagnosis 4. Mini vrf system alarm codes f31 outdoor unit nonvolatile memory (eeprom) error error detection method error diagnosis it is judged an error based on the criteria listed below. When power in...

  • Page 119

    5 - 31 5 mini vrf system trouble diagnosis mini vrf system trouble diagnosis 4. Mini vrf system alarm codes f31 outdoor unit nonvolatile memory (eeprom) error error detection method error diagnosis it is judged an error based on the criteria listed below. When power initially turned on for the first...

  • Page 120

    5 - 32 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 33 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes h02 pam error 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 s...

  • Page 121

    5 - 33 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 35 5 4. Mini vrf system alarm codes mini vrf system trouble diagnosis 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 ...

  • Page 122

    5 - 34 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 36 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes h31 hic error error detection method error diagnosis hic overcurrent due to hic fault 1. 2. • hic abnormal heat caused by defective hic or hic radiation...

  • Page 123

    5 - 35 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 37 5 4. Mini vrf system alarm codes mini vrf system trouble diagnosis nu (for single-phase outdoor unit hic pc board) (for 3-phase outdoor unit hic pc board) w v u p nu w v u p (for 3-phase outdoor unit cr pc board) cn-pry...

  • Page 124

    5 - 36 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 37 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes l04 duplicated setting of outdoor system address error error detection method error diagnosis it is judged an error when the identical self-address comm...

  • Page 125

    5 - 37 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 39 5 4. Mini vrf system alarm codes mini vrf system trouble diagnosis 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 yet setup error...

  • Page 126

    5 - 38 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes mini vrf system trouble diagnosis 4. Mini vrf system alarm codes 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 tem...

  • Page 127

    5 - 39 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 41 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes p03 compressor discharge temperature error error detection method error diagnosis 1. 2. When the discharge temperature is over 106°c. • 1-1 1-2 2-1 2-2 ...

  • Page 128

    5 - 40 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 42 5 4. Mini vrf system alarm codes mini vrf system trouble diagnosis 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 e...

  • Page 129

    5 - 41 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 43 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes 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...

  • Page 130

    5 - 42 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 43 4. Mini vrf system alarm codes mini vrf system trouble diagnosis 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 ...

  • Page 131

    5 - 43 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 45 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes p13 forgot-to-open valve alarm error detection method error diagnosis 1. 2. Detection is performed only in the test run. When once detected or the test ...

  • Page 132

    5 - 44 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 4. Mini vrf system alarm codes mini vrf system trouble diagnosis 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 change the setting o...

  • Page 133

    5 - 45 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 46 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes p16 overcurrent of inverter compressor check of content 2. Meaning of alarm 1. Secondary current effective value detected the overcurrent (trip current ...

  • Page 134

    5 - 46 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 4. Mini vrf system alarm codes mini vrf system trouble diagnosis 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 discha...

  • Page 135

    5 - 47 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 49 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes 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 repl...

  • Page 136

    5 - 48 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 49 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes 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-f...

  • Page 137

    5 - 49 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes 5 - 50 5 mini vrf system trouble diagnosis 4. Mini vrf system alarm codes p29 inv compressor start-up failed (including lock) due to inv compressor wiring open phase, faulty dcct, etc. Error diagnosis 2. Error detection method...

  • Page 138

    5 - 50 5 mini vrf system trouble diagnosis 3. Mini vrf system alarm codes mini vrf system trouble diagnosis 4. Mini vrf system alarm codes single-phase outdoor unit hic board 3-phase outdoor unit hic board nu w v u p nu w v u p cn-vdc+ cn-vdc- 4-way valve (cn-20s) crankcase heater (cn-ch) 4-way valv...

  • Page 139

    5 - 51 5 mini vrf system trouble diagnosis 4. Inspection of parts (outdoor unit) mini vrf system trouble diagnosis 5. Inspection of parts (outdoor unit) (1) (2) (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) electronic control valve (mov1) crankcase heater mov1: measure the voltage between plug ...

  • Page 140

    5 - 52 5 mini vrf system trouble diagnosis 5. Symptom: thermostat in off continues or cycles off & on too frequently 5 - 53 5 mini vrf system trouble diagnosis 6. Symptom: thermostat in off continues or cycles off & on too frequently 1-1 adjust setting temperature 1-2 yes no connect correctly 1-3 ye...

  • Page 141

    201503 sm830195-04_mini vrf sys.Indb 1 2015/03/11 13:59:35.