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Haier H2SM Series Service Manual

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Air Conditioner
Edition:2006/1/10
CAUTION
READ THIS MANUAL CAREFULLY TO
DIAGNOSE TROUBLE CORRECTLY
BEFORE OFFERING SERVICE .

SERVICE MANUAL

Air Conditioners
MODEL: H2SM-(9+12)H03/R2
THIS MANUAL IS USED BY
QUALIFIED APPLIANCE
TECHNICIANS ONLY. HAIER
DOES NOT ASSUME ANY
RESPONSIBILITY FOR PROPERTY
DAMAGE OR PERSONAL INJURY
FOR IMPROPER SERVICE
PROCEDURES DONE BY ONE
UNQUALIFIED PERSON.
REVISION 0

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Summary of Contents for Haier H2SM Series

  • Page 1: Service Manual

    BEFORE OFFERING SERVICE . SERVICE MANUAL Air Conditioners MODEL: H2SM-(9+12)H03/R2 THIS MANUAL IS USED BY QUALIFIED APPLIANCE TECHNICIANS ONLY. HAIER DOES NOT ASSUME ANY RESPONSIBILITY FOR PROPERTY DAMAGE OR PERSONAL INJURY FOR IMPROPER SERVICE PROCEDURES DONE BY ONE UNQUALIFIED PERSON.

  • Page 2: Important Information

    Air Conditioner Edition:2006/1/10 MODEL: H2SM-(9+12)H03/R2 IMPORTANT INFORMATION Features Comfortable: wide-angle airflow health air purifying quiet operation super energy efficient Main Specification 2900/3300/5800W Cooling Capacity Rated Power/Current(cooling) 960/1020/2050W/4.6/4.8/9.0A EER: 3.02/3.23/2.82W/W 2800/3300/6000W Heating Capacity Rated Power/Current(heating): 900/980/1760W/4.5/4.6/8.0A COP: 3.11/3.36/3.4 Air Volume(Indoor): 400/500m Power: 1PH 220-230V~ 50 Hz...

  • Page 3: Safety Information

    Haier urges you read and follow all safety precautions and warnings contained in this manual. Failure to comply with safety information may result in severe personal injury or death.

  • Page 4: Table Of Contents

    Air Conditioner Edition:2006/1/10 CONTENTS 1. SPECIFICATION........1 2. ELECTRICAL CONTROL......3 3. TROUBLE SHOOTING.........27 4. INSTALLA TION........32 5. CIRCUIT AND WIRING DIAGRAM.......42...

  • Page 5: Specification

    Air Conditioner Edition:2006/1/10 SPECIFICATION...
  • Page 6 Air Conditioner Edition:2006/1/10 H2SM-(9+12)H03/R2 ----- Model Brand Mark 2900/3300/5800W 50Hz Cooling Capacity Frequency Range 960/1020/2050W/9.0A 220-230V~ 50 Hz Rated Power/Current Power Cooling 2400W/12.4A -------- Max Power/Current Model×Sectional Area EE R 3.02/3.23/2.82W/W Power Cord 2800/3300/6000W Heating Capacity Refer. No. -------- HUARUN(09)/CRV113 Compressor 900/980/1760W/8.0A Rated Power/Current...

  • Page 7: Electrical Control

    Air Conditioner Edition:2005/11/18 ELECTRICAL CONTROL...
  • Page 8 Air Conditioner Edition:2006/1/10 One. Temperature Control Function In temperature control function, the operation frequency of outdoor unit is determined based on room temperature and the set temperature. In automatic fan speed mode, indoor fan is controlled based on the need of temperature control In heating mode, indoor fan is controlled based on the temperature of coil.
  • Page 9 Air Conditioner Edition:2006/1/10 Two. Indoor Fan Control 2-1. Heating 2-1-1. Warm Start Cold Air Control in Heating Mode Heat Exchange Temperature: THHOT3 37.0¡ æ THHOT2 35.2¡ æ THHOT1 25.2¡ æ 4mins THHOTR 16¡ æ Stop SLO SLO Stop Conduct indoor fan control as per the above diagram and the heat exchange temperature. 1.
  • Page 10 Air Conditioner Edition:2006/1/10 2-3-1. Compressor is off and is in 3 mins standby. Fan will stop if compressor stops Fan is at super low level upon the end of 3 mins standby. Compressor is on after 3 mins standby. 2-3-2. Compressor is on. When airflow is set at high, mid or low level, fan will operate as per the setting.
  • Page 11 Air Conditioner Edition:2006/1/10 (detect before operation), the unit will stop for 3 mins and it will operate based on inlet air temperature after 3 mins. Seven. Trial Operation Trial operation will end after 30 mins, after which unit shuts down. In trial operation, the unit will quit trial operation mode upon reception of signal.
  • Page 12 Air Conditioner Edition:2006/1/10 checksum, EEPROM error. When indoor unit receives EEPROM error signal from outdoor unit, it will display outdoor unit EEPROM error. At this time, control and emergency operation are not acceptable. It can only be cancelled through power off. Ten.
  • Page 13 Air Conditioner Edition:2006/1/10 signals to indoor unit: 12-2. Power-Off Compensation a Entry Condition: Press sleep key 10 times in 7s and buzzer gives out 4 sounds and save the current status into indoor unit EEPROM upon the entry. b. On entering power-off compensation operation, indoor unit operates as per the following procedures: Remote control emergency signal, and operates as per condition set by remote control and emergency setting and save the current status into indoor unit EEPROM.
  • Page 14 Air Conditioner Edition:2006/1/10 1. Definition of chip tubes’ pins Chips are used in this manual and their pins are defined as follows: Chip’s Pins Definition of Function Chip’s Definition of Function Pins P37AIN5 CTA signal input P36AIN4 CTB signal input XOUT XOUT P35AIN3...
  • Page 15 Air Conditioner Edition:2006/1/10 The outdoor unit waits to receive signal HEADER HDR(81H) from the indoor unit after the power supply inputs. When transmitting signal, HEADER is C3H. When a signal is first transmitted at the head, data "1" outputs HI of 9MS and LO of 2MS and data "0" outputs HI of 2MS and LO of 9MS. When receiving signal, the signal reception is carried out depending on the majority of the 5 and 7 5,6,7MS.
  • Page 16 Air Conditioner Edition:2006/1/10 A7-6 A5-3 A2-0 C7-0 E3 E2-0 Protocol READER Oper Section Heat Trouble Capa Time Abnor ation excha record oper city short mode ation informa temp. tion 10000001 00000000 11111111 00000000 11111111 00000000 11111111 HDR: READER indoor unit¡úoutdoor unit 81H 10000001 Communic ation Communication Byte...
  • Page 17 Air Conditioner Edition:2006/1/10 0: normal time shortage operation double-compressor one-drive-two without inverter single-compressor E2 E1 one-drive-two without inverter 10 One-drive-two with inverter Not in use Can not be used B,D,F: inverter data of A,C and E respectively 8 Bits each G7-0 I7-4 I3 I21 I0 K76 K54 K3-0 Protocol HEADER...
  • Page 18 Air Conditioner Edition:2006/1/10 I7-I4 0000: compressor operation abnormal Black indicates the trouble in the 0001: normal unit with inverter 0010: discharge pipe temperature over-rise Red indicates the trouble in the protection unit without inverter 0011: DC wave crest current Note: 0100: outdoor EEPROM abnormal 1.
  • Page 19 Air Conditioner Edition:2006/1/10 3. Single-unit cooling operation 3.1. When the single unit’s indoor unit gives a cooling signal, the corresponding outdoor compressor carries out cooling operation. During the operation, the outdoor fan operates 1 second before the compressor operates. 3.2. When changed from heating to cooling, the compressor stands by for 3 minutes, the outdoor fan operates to blow off remaining heat and stops 30 seconds later.
  • Page 20 Air Conditioner Edition:2006/1/10 and 3 minute run. There is a return difference of 2¡æ for the change between low speed and run and stop. 4.5. Once the fan operates in a mode, it must operate for more than 45 seconds. 4.6.
  • Page 21 Air Conditioner Edition:2006/1/10 heating operation. During the operation, outdoor compressor A and the 4-way valve operate 1 second before the fan starts, 20 seconds later, outdoor compressor B starts heating operation. 6.2. Once an outdoor compressor starts, the other compressor will not start in 20 seconds from the start.
  • Page 22 Air Conditioner Edition:2006/1/10 High temperature cut-off protection: When the coil temperature higher than T_CPS (68¡æ) and maintains for 10 seconds, both the compressor and outdoor fan stop, and the indoor fan operates as the thermostat is Off. The compressor will not restart in 3 minutes until the coil temperature lower than T_CP R(50¡æ).
  • Page 23 Air Conditioner Edition:2006/1/10 10.1. The current in the compressor is larger than 10 Afor more than 5 seconds, The compressor which has the highest current will stop(the compressor does not detect current within 10 seconds after its start) and 3 minutes later it will continue to operate. 10.2.
  • Page 24 Air Conditioner Edition:2006/1/10 When the result of the calculation from C¡ÁTA£-¦Á falls in the range of -15¡æ¡Ü C¡ÁTA£-¦Á , the interval between two defrosting operations is 45 minutes. When the result of the calculation from C¡ÁTA£-¦Á falls in the range of C ¡ÁTA£-¦Á<-15¡æ , the interval between two defrosting operations is 55 minutes.
  • Page 25 Air Conditioner Edition:2006/1/10 seconds. (3) . The defrosting operation has lasted 9 minutes. The starting conditions and control process for the double-unit are same as that for single-unit defrosting, the only difference is that the activation of compressor B lags that of compressor A. 13.

  • Page 26: Codes And Description

    H2SM-14/18C03/R2 Codes and Description Code indication Outdoor led1 Description blinks times indoor Power timer operate Operate heating cooling Room temperature sensor failure Heat-exchange sensor failure Indoor Indoor EEPROM error Malfunction Indoor fan motor malfunction 3 or 7 Communication Error (between indoor and outdoor unit) Outdoor outdoor EEPROM error Malfunction...
  • Page 27 H2SM-14/18C03/R2 : Indoor EEPROM error: Replace the PCB of indoor unit :Indoor fan motor malfunction whether terminal CN7 Pull out and reinsert the terminals and CN11 on indoor PCB well inserted or not? Electrify the machine again and turn it on in the cooling operation, positions 1 ( Measure voltage between the...
  • Page 28 H2SM-14/18C03/R2 outdoor EEPROM error: Replace the PCB of outdoor unit, LED1 of outdoor pcb flashes once Outdoor ambient Sensor failure LED1of outdoor pcb flashes twice whether terminal CN1 on Pull out the terminals on the outdoor mainboard and outdoor PCB contact well? reinsert them Pull the sensor out of the mainboard Measure the value of resistance Between its two...
  • Page 29 H2SM-14/18C03/R2 :Communication fault between indoor and outdoor system Check whether the linking cable between the indoor and outdoor Reconnect the linking cable; is not well connected If unit A have error , please turn please reverse outdoor if A is error and B is fine, indoor on A and B both check whether B connecting wires A(C) and B (C) unit A PCB is damaged...
  • Page 30 H2SM-14/18C03/R2 failure CN2 LED1 of outdoor pcb flashes 5 or 9 times outdoor unit A or B’s coi sensor whether terminal CN2 on Pull out the terminals on the outdoor mainboard and outdoor PCB contact well? reinsert them Pull the sensor out of the mainboard Measure the value of resistance Between its two jumpers Measure the temperature of...

  • Page 31: Trouble Shooting

    Air Conditioner Edition:2005/11/18 TROUBLE SHOOTING...
  • Page 32 2006/1/10 Air Conditioner Trouble shooting Before asking for service, check the following first. Phenomenon Cause or check points The system does not restart When unit is stopped, it won't restart immediately until 3 minutes have elapsed immediately. to protect the system. When the electric plug is pulled out and reinserted, the protection circuit will work for 3 minutes to protect the air conditioner.
  • Page 33 Air Conditioner Edition:2006/1/10 Abnormality Diagnosing Trouble Parts that may appear problems Prepared parts Applicable Number Description phenomenon and the Cause and tools machine 7805,transformer, piezo Use the resistance, fuse,remote controller, 7805,transfor remote receiver. If it can be booted by mer, fuse, controller to using manual emergency switch, piezo...
  • Page 34 Air Conditioner Edition:2006/1/10 Drain pan, drain hose. Check Oriented whether the indoor unit is installed wind panel horizontal, drain hose of indoor invariable Indoor unit or drain drain pan, unit is leveled off ,the hole is over frequency make water pan makes drain hose high...
  • Page 35 Air Conditioner Edition:2006/1/10 Outdoor P.C. Board 4 way valve coil 4 way valve body. Examine The air the CN204 at Outdoor P.C. Board Outdoor P.C. conditioner and watch if there is 220V Board 4way Little split Don’t make voltage .If there doesn’t have we valve coil unit of heat...

  • Page 36: Installation

    Air Conditioner Edition:2005/11/18 INSTALLATION...
  • Page 37 Air Conditioner Edition:2006/1/10...
  • Page 38 Air Conditioner Edition:2006/1/10...
  • Page 39 Air Conditioner Edition:2006/1/10...
  • Page 40 Air Conditioner Edition:2006/1/10...
  • Page 41 Air Conditioner Edition:2006/1/10 YEL/GRN YEL/GRN Indoor unit A YEL/GRN YEL/GRN Indoor unit B YEL/GRN Outdoor unit...
  • Page 42 Air Conditioner Edition:2006/1/10...
  • Page 43 Air Conditioner Edition:2006/1/10 9.52 9.52 3.The purging Method of the indoor unit B is the same as the indoor unit A. The unit A and unit B are seperated and disconnected connected for the different compress.
  • Page 44 Air Conditioner Edition:2006/1/10 Flare tool for R410A Conventional flare tool clutch-type(Rigid-type) Wing-nut type (Imperial-type) Clutch-type 1.Cut pipe 2.Remove burs 0~0.5mm 1.0~1.5mm 1.5~2.0mm 3.Insert the flare nut 4.Flare pipe...
  • Page 45 Air Conditioner Edition:2006/1/10...

  • Page 46: Circuit And Wiring Diagram

    Air Conditioner Edition:2005/11/18 CIRCUIT AND WIRING DIAGRAM...
  • Page 47 H2SM-14/18C03/R2 +12v 1N4007 D1-D4 FUSE 7805 3.15A 104/275V 561K IN4007 470UF/16V 2200UF/25V 0-171825-3 RTB-1.5-2P B2P3-VH-A +12V PTF5 PTF6 2SB1197 R53 1K R88 560 R69 10K R68 10K R67 10K R70 560 R71 560 R72 560 SJ20-07WX 220V-L IC12 220V-N IC10...

  • Page 48: Wiring Diagram

    Air Conditioner Edition:2006/1/10 WIRING DIAGRAM...
  • Page 49 Air Conditioner Edition:2006/1/10 WIRING DIAGRAM...
  • Page 50 Air Conditioner Edition:2006/1/10 Sincere Forever Haier Group Haier Industrial Park, No.1, Haier Road 266101, Qingdao, China http://www.haier.com...

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H2sm-(9+12)h03/r2

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