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Samsung ASHM070VE Service Manual

Other manuals for ASHM070VE: Owner's Instructions Manual

Summary of ASHM070VE

  • Page 1

    Service manual contents air conditioner 1. Pre c a u t i o n s 2. Product specifications 3. Operating instructions and i n s t a l l a t i o n 4. Disassembly and reassembly 5. Tro u b l e s h o o t i n g 6. Exploded views and parts list 7. Block diagrams 8. Pcb diagrams 9. Wiring diagrams 10. Schema...

  • Page 2

    © samsung electronics co., ltd. May. 1998. Printed in korea. Code no. Db81-10153a(1).

  • Page 3: 1. Precautions

    1 . Warning: prior to re p a i r, disconnect the power cord from the circuit bre a k e r. 2 . Use proper parts: use only exact replacement parts. (also, we re c o m m e n d replacing parts rather than repairing them.) 3 . Use the proper tools: use the proper tools and test equipment, and know how to...

  • Page 4

    1-2 samsung electronics m e m o.

  • Page 5: 2. Product Specifications

    Model item type - cooling btu/h dehumiditying i/h heating btu/h low temp. Heating btu/h air volume cooling m3/min heating m3/min noise cooling db heating db power v-hz power cooling w consumption heating w operating cooling a current heating a power cooling % factor heating % starting current a powe...

  • Page 6

    2-2 samsung electronics 2-2 dimensions 2-2-1 indoor unit 2-2-1 outdoor unit air in (front view) (remote control) (rear view) (front view) (rear view) 1000 335 660 815 182 air out installation plate 58 22.

  • Page 7

    Samsung electronics 2-3 2-3 refrigerating cycle block diagram.

  • Page 8

    2-4 samsung electronics m e m o.

  • Page 9

    Samsung electronics 3-1 3. Operating instructions and installation 3-1 operating instructions 3-1-1 name & function of key in remote controller no 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 name of key mode (up) (down) turbo off on timer off timer set cancel (up) without regard to on/off condition in remot...

  • Page 10

    3-2 samsung electronics operating instructions and installation 1. A u to mode : in this mode, operation mode(cool, heat, dry) is selected auto- matically by the room temperature of initial o p e r a t i o n . ∆ t= -1°, -2°c, 0°c, +1°c, +2°c ∆ t is controlled by setting temperature up/down key of re...

  • Page 11

    Samsung electronics 3-3 operating instructions and installation 8 . C o m p u l s o ry o p e r ation : for operating the air conditioner without the remote contro l l e r. * a u to : the operating is the same func- tion that a u to mode in the remote con- t ro l l e r. 9 . Swing : blade-h is rotated...

  • Page 12

    3-4 samsung electronics 3-2. Outdoor unit controlling spec (each load controlling condition) * each load is controlled at the outdoor unit by receiving the operation command of indoor unit according to the communication between the indoor unit and outdoor unit. 3-2-1 outdoor fan control 1. The outdo...

  • Page 13

    Samsung electronics 3-5 c) the load delay time has the error of ±9 sec according to the communication delay time. 4 . B room 4 way valve contro l when changing over the heating to cooling in case of b and c room, the 4 way valve is immediately changed over. 3-2-4 pulse operated expansion valve contr...

  • Page 14

    3-6 samsung electronics 3-3 installation 3-3-1 selecting area for installation select an area for installation that is suitable to the customer's needs. 3-3-1(a) indoor unit 1 . Make sure that you install the indoor unit in an area providing good ventilation. It must not be blocked by an obstacle af...

  • Page 15

    Samsung electronics 3-7 operating instructions and installation 3-3-2 installation diagram of indoor unit and outdoor unit a indoor unit gas leak test check point tape vinyl piping indoor unit b drain hose installation cut the piping hole sloped slightly piping (liquid) 1/4" clamper tube installatio...

  • Page 16

    3-8 samsung electronics operating instructions and installation 3-3-2(a) fixing the installation plate 3-3-2(b) purging the unit installation plate pipe hole (ø65mm) 280 (unit : mm) 340 (unit : mm) 1. Determine the position of the pipe and drain hose hole using the left figure and drill the hole wit...

  • Page 17

    Samsung electronics 3-9 3-3-2(c) connecting the assembly cable. 3-3-2(d) installing and connecting the indoor unit drain hose c a re must be taken when installing the drain hose for the indoor unit to ensure that any condensa - tion water is correctly drained outside. When passing the drain hose thr...

  • Page 18

    3-10 samsung electronics 3-3-2(e) outdoor unit installation operating instructions and gas leak test wiring connection indoor unit check point outdoor unit check point check for gas leak from the flare nut connections with leak detector. Two electric cables must be connected to the outdoor unit: • t...

  • Page 19

    Samsung electronics 3-11 grounding installation of drain line (the parts for this work are optional.) • a g rounding terminal can be found on the outdoor unit as illustrated. In heating and “de-ice” operation, condensed water may be generated. Install drain line as following pro c e d u re . 1. Inse...

  • Page 20

    3-12 samsung electronics operating instructions and installation 3-3-2(f) flare modification flare modification procedure 1 ) cut the pipe using a pipe cutter. • tools used 2 ) remove burrs at the tip of the pipe cut. C a u t i o n : burrs not removed may result in leakage of gas. 3 ) insert a flare...

  • Page 21

    Samsung electronics 3-13 3-3-2(g) air-purge procedure when refrigerant piping is complete, perform an airpurge in the set up shown below. 1 . Indoor a u n i t 1 - 1 connect the charging hose to the packed valve having a charging p o r t . 1 - 2 loosen the liquid-side (1/4") flare nut. 1 - 3 open gas...

  • Page 22

    3-14 samsung electronics operating instructions and installation 3-3-2(h) refrigerant refill • refill the refrigerant according to the criteria for pipeline lengths of the unit a and b as shown in the right table at the time of initial installation. • refill an air-conditioner with refrigerant when ...

  • Page 23

    Samsung electronics 3-15 operating instructions and installation 3-3-2(j) “pump down” procedure • ‘pump down’ shall be carried out when an evaporator is replaced or when the unit is relocated in another are a . 1. Remove the caps from the 2-way valve and the 3-way valve. 3. Set the unit to cool oper...

  • Page 24

    3-16 samsung electronics 3-3-3 technical document • cooling characteristics - outdoor te m p e r a t u re (b or c indoor unit only) test condition indoor unit(db/wb) : 27/19 vo l t a g e / f requency : 240v/50hz 10000 cooling capacity outdoor temperature(db/wb) 21/15 35/24 43/26 air outlet temp. 700...

  • Page 25

    Samsung electronics 3-17 • heating characteristics - outdoor te m p e r a t u re (b or c indoor unit only) test condition indoor unit(db/wb) : 20/15 vo l t a g e / f requency : 240v/50hz 10000 heating capacity outdoor temperature(db/wb) 7/6 2/1 air outlet temp. 7000 8000 9000 45 44 43 42 41 40 39 38...

  • Page 26

    3-18 samsung electronics • cooling characteristics - outdoor te m p e r a t u re (a indoor unit only) test condition indoor unit(db/wb) : 27/19 vo l t a g e / f requency : 240v/50hz 13000 cooling capacity outdoor temperature(db/wb) 21/15 35/24 43/26 air outlet temp. 10000 11000 12000 15 14 13 12 11 ...

  • Page 27

    Samsung electronics 3-19 • heating characteristics - outdoor te m p e r a t u re (a indoor unit only) test condition indoor unit(db/wb) : 20/15 vo l t a g e / f requency : 240v/50hz 14000 heating capacity outdoor temperature(db/wb) 7/6 2/1 air outlet temp. 10000 12000 11000 13000 45 44 43 42 41 40 3...

  • Page 28

    Samsung electronics 4-1 4. Disassembly and reassembly 4-1 indoor unit stop operation of the air conditioner and remove the power cord before repairing the unit. No parts procedure remark 1 front grille 1) stop the air conditioner operation and block the main power. 2) seperate tape of front panel up...

  • Page 29

    Disassembly and reassembly samsung electronics no parts procedure remark 2 3 4 ass’y tray drain. Electrical parts (main pcb) heat exchanger 1) do “1”, above. Separate the drain hose from the extension drain hose. 2) take the display pcb out. (center of indoor unit) 3) loosen three fixing screws of l...

  • Page 30

    Disassembly and reassembly 4-3 samsung electronics no parts procedure remark 3 fan motor and cross fan 1) do “1” “2” ”3” “4”, above. 2) loosen the fixing three screws and separate the motor holder. 3) loosen the fixing screw of fan motor. (by use of m3 wrench) 4) separate the fan motor from the fan....

  • Page 31

    Samsung electronics 4-4 4-2 outdoor unit no parts procedure remark 1 common work 1) stop operating the air conditioner, and cut off the main power. 2) remove the top cover. 3) remove the electric cover, and then remove the connector of the indoor and outdoor unit. 4) remove the cabi-side. 5) remove ...

  • Page 32

    Disassembly and reassembly 4-5 samsung electronics no parts procedure remark 2 3 fan motor and propeller fan electric box 1) perform the work of clause ®Á. 2) loosen the nut. 3) remove the propeller fan. 4) remove the connector of the motor. Loosen the screw, and then remove the motor. 1) perform th...

  • Page 33: 5. Troubleshooting

    1 ) is the voltage of the power corre c t ? The input voltage shall be 198-264vac. The airconditioner may not operate properly if the voltage is out of this range. 2 ) is the link cable linking the indoor unit and the outdoor unit linked pro p e r l y ? The indoor unit and the outdoor unit shall be ...

  • Page 34

    5-2 samsung electronics 5-2 checking and testing operations (outdoor unit) to complete the installation, perform the following checks and tests to ensure that the air conditioner is operat - ing corre c t l y. 1. Review all the following elements in the installation: • installation site strength • p...

  • Page 35

    Samsung electronics 5-3 b. Check the communication connection of outdoor unit pcb (check whether the red led of outdoor unit pcb is flickering). The communication lamp is flickering after the display of each unit on the outdoor unit pcb. (every one second) - led lamp(red) is flickering after display...

  • Page 36

    5-4 samsung electronics e e x x a a m m p p l l e e • in case of unit a test, push once the pcb switch s/w-a (same for unit b and c). - in such a case, the indoor unit of unit a is operated automatically by the outdoor unit. - in case the unit a test stops, push once more the switch s/w-a. 1. Once t...

  • Page 37

    Samsung electronics 5-5 5-3 fault diagnosis by symptom 5-3-1 when the power voltage is not available 1 ) inspection items (1) is the power voltage is normal? (ac 198v - ac 264 v) (2) is the power cord is correctly connected and is the contact good? ((1) l(black) (2) n(white) (3) communication (red))...

  • Page 38

    5-6 samsung electronics 5-3-2 no power (outdoor unit) 1 ) inspection items (1) Á is the power source normal (ac198v - ac 264v)? (2) is the outdoor power connected normally? ((1) of terminal : l, (2) of terminal : n, (3) of termi- nal : communication) ? (3) check whether the display of outdoor pcb(se...

  • Page 39

    Samsung electronics 5-7 troubleshooting 5-3-3 when the fan of indoor unit does not operate 1 ) inspection items (1) is the power voltage normal? (ac 198v - ac 264v) (2) is the connector of indoor fan with the good contact? (cn73) (3) is the soldering status of running condenser with the good contact...

  • Page 40

    5-8 samsung electronics troubleshooting 5-3-4 when the outdoor unit fan does not operate 1 ) inspection items (1) the outdoor unit fan motor operates only when the operating conditions are satisfied and is selected by the ry74(low) and py75(hi) to ro t a t e . (2) is the power voltage normal? (ac 19...

  • Page 41

    Samsung electronics 5-9 5-3-5 when the up/down louver moter does not operate. (initial diagnosis) 1) checklist : (1) is input voltage normal? (198-264va c ) (2) is the up/down louver motor properly connected with the connector (cn61)? 2 ) troubleshooting pro c e d u re remove power cord and plug in ...

  • Page 42

    5-10 samsung electronics troubleshooting 5-3-6 if operation by remote control unit is impossible. (initial diagnosis) 1) troubleshooting pro c e d u re remove power cord and plug in again approx. 5 seconds is operation lamp blinking? Check as in the procedure “no power parts”. Refer to page 5-2. Nor...

  • Page 43

    Samsung electronics 5-11 troubleshooting 5-3-7 when the bypass solenoid valve does not operate 1) inspection items (1) is the solenoid valve under the operating condition? ( when one of the b room or c room is under the cooling operating mode) (2) is the power voltage normal ? (ac 198v - ac 264v) (3...

  • Page 44

    5-12 samsung electronics 5-3-8 when the 4 way valve (a,b) is not operating 1. Inspection items (1) a re the 4 way valve a and b under the operating conditions? (when the comp a (4 way valve a ) and comp b (4 way valve b) are on during the heating operating) (2) is the power voltage normal? (ac 198- ...

  • Page 45

    Samsung electronics 5-13 5-3-9 when the compressor does not operate 1) inspection items (1) is the comp a under the operating conditions? (cooling operating of a, b(c) ro o m ) (2) is the power voltage normal? (ac 198- ac 264v) (3) a re the connector connection of comp a ( ry 72, 73) and b(ry 71) go...

  • Page 46

    5-14 samsung electronics 5-4 pcb inspection 5-4-1 cautions for part replacement 5-4-2 procedure the parts should be replaced in the following pro c e d u re . 1 . The human body carries much static e l e c t r i c i t y. Before touching a part for re p a i r, replacement or the similar purpose, be s...

  • Page 47

    Samsung electronics 5-15 5-4-3 detailed procedure no. 1 2 3 4 5 malfunction pull out the power plug from the ac terminal and confirm the fuse on the pcb assembly turn the power on. If lamp blinks trouble is not related to the items 1 through 4 on the right. Set turbo operating mode when rmc switch p...

  • Page 48

    5-16 samsung electronics 5-5 fault diagnosis of major parts parts temp.Sensor heat ex. Sensor indoor fan motor outdoor fan motor stepping motor (up/down swing motor) diagnosis measure resistance with a tester. Normal 8 k Ω ~27 k Ω at ambient temperature (+0°c ~ +30°c) abnormal ∞ , o Ω … open or shor...

  • Page 49

    Samsung electronics 5-17 m e m o.

  • Page 50

    Samsung electronics 6-1 6. Exploded views and parts list 6-1 indoor unit.

  • Page 51

    Samsung electronics 6-2 exploded views and parts list ■ parts list no. 1 1-1 2 3 4 5 6 6-1 6-2 7 7-1 7-2 8 9 10 11 12 13 14 15 16 17 18 19 20 21 code no db64-10140a db64-70073a db63-30131a db74-10091a db63-10472b db92-70075e db93-10470a db61-10137a db41-10199a db94-10074c db95-20138a db66-30153a db7...

  • Page 52

    Samsung electronics 6-3 6-2 outdoor unit.

  • Page 53

    Samsung electronics 6-4 exploded views and parts list no. 1 1-1 2 3 4 5 5-1 6 6-1 6-2 7 8 8-1 8-1-1 8-1-2 8-1-3 8-1-4 8-1-5 8-1-6 8-1-7 8-1-8 8-2 8-2-1 8-2-2 8-3 8-3-1 8-3-2 8-3-3 9 9-1 9-2 10 11 11-1 11-2 11-3 11-4 11-5 11-6 11-7 12 13 14 14-1 14-2 15 16 16-1 16-2 16-3 16-4 17 18 19 20 code no db90...

  • Page 54

    Samsung electronics 6-5 6-3 remote control & pcb box 6-3-1 remote control (ass’y code no : db93-30054f) ■ parts list no 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 code no db93-30052c db61-10144a db61-10145a db64-20054a db63-10477a db74-10084a db73-20110b db64-40167a db64-40166b db68-10789a db68-10790...

  • Page 55

    Samsung electronics 6-6 6-3-2 pcb box exploded views and parts list 1 2-4 2-5 2-2 2-1 3-1 2 3 2-3 no 1 2 2-1 2-2 2-3 2-4 2-5 3 3-1 code no db61-10151a db93-10522a db93-10523a db09-10156a db32-10008d de26-20154a 2306-000294 de32-10037a db93-10470a db32-50021a description case-control ass'y main pcb a...

  • Page 56

    6-7 samsung electronics m e m o.

  • Page 57: 7. Block Diagrams

    Samsung electronics 7-1 7. Block diagrams 7-1 micro computer block diagram heat exchanger sensor infrared signal •blade-h control •indoor fan motor control •in-out communication • temperature control • timer •buzzer control indoor fan motor speed detect zero crossing power on/off mode (auto, cool, d...

  • Page 58

    7-2 samsung electronics 7-2 outdoor unit control diagram reset circuit communi -cation circuit dc power circuit (+5v, +12v) power transformer ac input outdoor sensor outdoor control pcb micom • outdoor unit data communication • comp control • outdoor fan control (h, l) • mv-b,c control • 4-way v/v c...

  • Page 59

    Samsung electronics 7-3 m e m o.

  • Page 60: 8. Pcb Diagrams

    Samsung electronics 8-1 8. Pcb diagrams 8-1 main pcb-ashm070ve(db93-10522a) / ashm120ve(db93-10523a).

  • Page 61

    Pcb diagrams 8-2 samsung electronics ■ part list no design location 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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 f701 f701 ic01 ic01 ic01 ...

  • Page 62

    Samsung electronics 8-3 8-2 outdoor pcb ( a s s ’ y code no : db93-10525a).

  • Page 63

    Pcb diagrams 8-4 samsung electronics ■ part list no. F701 f101 f701,f101 r401~r403 r901,r902 r201 r701,r703 r702 r501,r502 r503 r303 r301,r503 r903~r910 r404~r406 c302 c103 c105 c101 c701 ic01 ic02 ic03 ic04 ic05~ic08 pc31,pc32 d101~d104,d701 d401~d408 zd71 seg1 seg1 led1 ft71 x101 q901,q902 q301,q3...

  • Page 64

    Samsung electronics 8-5 • ass’y code no : db93-10470a no a b c d e f g h i j k l m n description led - lamp led - lamp led - lamp led - lamp connector wafer pcb-display module remocon c/w dis & module case-center pcb paint c-ceramic c-ceramic diode-switching r-carbon code-no db07-10022a 0601-001059 ...

  • Page 65: 9. Wiring Diagrams

    Mark english espanol francais italian samsung electronics 9-1 9. Wiring diagrams 9-1 indoor unit sensor temperatura ambiente no conectado indicador modulo motordel ventilador motor paso a paso unidad interior presistencia intterior potencia;n (negro) potencia;n (blanco) compresor (rojo) masa ( v e r...

  • Page 66

    Samsung electronics 9-2 9-2 outdoor unit mark english espanol francais italiano blk blk negro noir nero wht wht blanco blanc bianco red red rojo rouge rosso g r n / y e l g r e e n / y e l l o w v e r d e / a m a r i l l o v e rt / j a u n e v e r d e / g i a l l o brn brown marron marron marrone sk...

  • Page 67: U P D A Te  Log  Sheet

    U p d a te log sheet application date page part# note(cause & solution) s/bulletin# use this page to keep any special servicing information. (service bulletin, etc.) if only parts number changes, just change parts number directly on parts list. And if you need more information, please see the servic...

  • Page 68

    Samsung electr onics 10-1 10. Schematic diagrams 10-1 indoor unit.

  • Page 69

    Samsung electr onics 10-2 10-2 outdoor unit.

  • Page 70

    10-3 remote control samsung electr onics 10-3.