Haier Air conditioner

For Europe Haier Air conditioner HAND in HAND HIGHER and HIGHER Page:1

For Europe HSU-09/12HVA103/R2(DB) HSU-09/12RHA103/R2(DB) Page:2

Error Codes and Description indoor and outdoor display(1) indoor Code indication Outdoor (LED1 flash times) Description Indoor and Outdoor E7 15 Communication fault between indoor and outdoor units Indoor Malfunction E1 E2 Room temperature sensor failure Heat-exchange sensor failure E4 Indoor EEPROM error E14 Indoor fan motor malfunction E9 High work-intense protection Page:3

Outdoor Malfunction F12 F11 F22 F11 F11 F4 F21 F6 F25 F11 Error Codes and Description indoor and outdoor display(2) indoor --- --- Code indication Outdoor (LED1 flash times) 2 3 5 1 4 6 8 9 10 12 13 18 19 24 25 Outdoor EEPROM error The protection of IPM Description Over current protection of AC electricity for the outdoor model Communication fault between the IPM and outdoor PCB Over pressure or Overheat protection for the compressor Power voltage is too high or low Overheat protection for exhaust temperature outdoor fan motor malfunction Frost-removing temperature sensor failure Ambient temperature sensor failure Exhaust temperature sensor failure deviate from the normal for the compressor Loop of the station detect error Over current of the compressor Over current protection for single-phase of the compressor Page:4

1.Thermistor or Related Abnormality (indoor unit) Indoor Display E1: Room temperature sensor failure E2: Heat-exchange sensor failure Method of the temperatures detected by the thermistors are used Malfunction to determine thermistor errors Detection Malfunction when the thermistor input is more than 4.92V or less Decision than 0.08V during compressor operation. Conditions * Note: The values vary slightly in some models Supposed : Faulty connector connection Causes Faulty thermistor Faulty PCB Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred. Page:5

Check the connector connection. Is it normal? Yes Correct the connection Thermistor resistance check Is it normal? Replace the thermistor Yes Replace the indoor unit PCB Thermistor resistance check method: Remove the connector of the thermistor on the PCB, and measure the resistance of thermistor using tester.the relationship between normal temperature and resistance is shown in the value of indoor thermistor. Page:6

2.Indoor fan motor malfunction Indoor Display E14 Method of Malfunction Detection The rotation speed detected by the Hall IC during fan motor operation is used to determine motor operation Malfunction when the detected rotation feedback singal don t Decision receiced in 2 minutes Conditions Supposed Causes Operation halt due to breaking of wire inside the fan motor. Operation halt due to breaking of the fan motor lead wires Detection error due to faulty indoor unit PCB Page:7

whether terminal CN13 and CN7 on indoor PCB well inserted or not? Pull out and reinsert the terminals Electrify the machine again and turn it on in the cooling operation, Measure voltage between the positions 1 ( red wire) and 3( black wire) of Terminal CN13 on the indoor PCB the voltage is about 90-200vac the indoor pcb is damaged and need replace check whether motor can run when turn on the unit When motor is running Measure whether there is voltage pulse(0-5vdc) between the positions 2 (middle wire) and 3( black wire) of Terminal CN7 on the indoor PCB is nomal or not? the indoor motor is damaged and need replace the indoor motor is damaged and need replace the indoor pcb is damaged and need replace Page:8

3.IPM protection Outdoor display LED1 flash 2 times, Indoor Display F11 Method of IPM protection is detected by checking the Malfunction compressor running condition and so on. Detection Malfunction The system leads to IPM protection due to over Decision current Conditions The compressor faulty leads to IPM protection circuit component of IPM is broken and led to IPM protection Supposed IPM protection dues to the compressor faulty Causes IPM protection dues to faulty PCB of IPM module Compressor wiring disconnected Page:9

Turn off the power.check if the compressor wiring commect. Yes Renewedly connect the wiring Check the IPM module, With a multimeter, test whether there is diode characteristic between the three terminals U/V/W and the two terminals P/N of Module IPM Normal? Change the IPM module Yes Test the resistance values among Phases U, V and W of compressor If the resistance are equal and about 1-3Ω Replace the compressor Yes Check the installation condition. Page:10

4.The IPM and outdoor PCB don t communicate or Related Abnormality Outdoor display : LED1 flash 4 times Indoor Display : F11 Method of : Communication is detected by checking the IPM Malfunction module and the outdoor PCB Detection Malfunction : The outdoor PCB broken leads to Decision communication fault Conditions The IPM module broken leads to communication fault Supposed : The outdoor PCB is broken Causes The IPM module is broken Communication wiring disconnected Page:11

1) Check whether Terminal CN14 and CN8 on the outdoor mainboard CN10 and CN11 on IPM module or not? 2) Check whether the connected wire between IPM and outdoor or not? Are they good? 1) Pull out and reinsert the terminals. 2) Replace connected wire Electrify the machine again and turn it on, Check whether the voltage between 1 and 2 of Terminal CN8 is about DC5V, Check whether the voltage between2 and 3 of Terminal CN8 is about DC15V Replace the outdoor IPM module with a new one. Replace the outdoor mainboard with a new one Page:12

5. Thermistor or Related Abnormality(outdoor unit) 1.Frost-removing temperature sensor failure Indoor display: F21 outdoor display: LED1 flash 10 times: 2Exhaust temperature sensor failure Indoor display: F25 outdoor display: LED1 flash 13 times: 3Ambient temperature sensor failure Indoor display: F6 outdoor display: LED1 flash 12 times: Method of This type of error is detected by checking the thermistor Malfunction input voltage to the microcomputer. Detection (A thermistor error is detected by checking the temperature) Malfunction The thermistor input is above 4.9V or below 0.1V Decision with the power on. Conditions * Note: The values may vary slightly in some models Supposed Faulty connector connection Causes Faulty thermistor Faulty PCB Page:13

Check the connector connection. Is it normal? Correct the connection check Thermistor Resistance Is it normal? Replace the thermistor Replace the outdoor unit PCB Page:14

6. Overheat Protection For Exhaust Temperature Indoor display : F4 outdoor display : LED1 flash 8 times Method of Malfunction Detection : the exhaust temperature control is checked with the temperature being detected by the exhaust pipe thermistor Malfunction : when the compressor discharge temperature is above Decision 117 Conditions Supposed Causes : the cryogen may have been leaked or other causes to make he exhaust temperature too high. Faulty thermistor Faulty PCB Page:15

Electrify the machine again and turn on, then measure the temperature at the exhaust temperature sensor of the compressor on the outdoor unit the temperature exceeds 117 shortly after the unit starts? Measure the temperature at the exhaust temperature sensor of the compressor on the outdoor unit 1) The cryogen may have been leaked during installation, or there may be leakage in the piping system. 2) There may be other causes to make the exhaust temperature too high. Malfunctions occur even though the Exhaust temperature is below 117. Exhaust temperature sensor is broken and needs be replaced Pull out the exhaust sensor and measure its resistance at standard temperatures according to the resistance-temperature table the results deviate much? The outdoor mainboard is damaged and needs be replaced The sensor is damaged. Replace the sensor with a new one. Page:16

7. The EEPROM Abnormality (Indoor or outdoor unit) Indoor Display E4 Indoor EEPROM error F12Outdoor EEPROM error Method of : the Data detected by the EEPROM are Malfunction used to determine MCU Detection Malfunction when the Data of EEPROM is error or the Decision EEPROM is damaged Conditions Supposed Faulty EEPROM data Causes Faulty EEPROM Faulty PCB Page:17

Check whether LED1 on the outdoor unit blinks 1 times The outdoor PCB is damaged. Replace it with a new one. the indoor PCB is damaged, and needs replacing with a new one Page:18

8. Communication error between the indoor and outdoor units Indoor display E7 Outdoor: display LED1 flash 15 times Method of The data received from the another unit in Malfunction indoor unit-outdoor unit signal Detection transmission is checked whether is normal Malfunction When the data sent from outdoor unit Decision cannot be received normally,or when the Conditions content of the data is abnormal Supposed indoor unit- outdoor unit signal Causes transmission error due to wiring error Faulty indoor PCB Faulty outdoor PCB Faulty power module Page:19

Restart the unit and it becomes normally. Yes The outdoor mainboard needs dehumidification. No If starting up normally, but malfunction occurs again after a while Yes The outdoor PCB needs dedust. No Check whether the linking cable between the indoor and outdoor is well connected or whether its core wires are well insulated. No 1. Reconnect the linking cable; 2. Replace the linking cable with new one. Yes Page:20

Check If the LED1 on the indoor blinks interruptedly No Test the outdoor power supply (230VAC and +310VDC) with a multimeter. If 230VAC is available but 310DC not, the power module is damaged, replace it with a new one. Yes measure the voltage between Jumpers 3 and 4 of IC12 on the indoor mainboard with a multimeter. If the voltage is of a constant value of 0V DCto5V DC If both 230VAC and 310DC are available, measure 12V(from7805) is available. Yes If the LED1 is off within two minutes after the machine is supplied with power, measure the AC voltage between positions 1 and 3 on the terminal of outdoor unit with a multimeter. No The outdoor mainboard is damaged; Replace them with a new one. Yes The indoor mainboard is damaged; replace it with a new one. If the value is constant at about 30V, the indoor mainboard is damaged, replace it with a new one. If the value varies between 0 and 80 VAC, the outdoor mainboard is damaged, replace it with a new one. The outdoor mainboard is damaged; replace it with a new one. Page:21

Page:22 R16 10K C6 102 C7 102 IC2 R15 330 R18 2.2K R14 1M C5 103 R13 2.2K D6 1N4007 D5 1N4007 R12 2W6.8K 1 N 1 COM R17 10K +5 1 2 4 5 6 INDOOR UNIT IC1 LED1 DQ1 2SD1781K receive send +5V TLP371 R1 820 SEND R2 1M C1 0.001UF R9 6.8K R10 6.8K R11 6.8K D4 1N4007 R8 1M C4 22UF/400VDC D3 1N4007 D2 1N4007 C3 0.01UF R6 1K R5 10K R7 10K D1 1N4007 OUTDOOR UNIT 1 COM 1 N 1 L POWER IC4 R3 10K R4 10K C2 0.01UF +5V RECEIVE

9. High work-intense protection Indoor display E9 Method of High work-intense control is activated in the heating Malfunction mode if the temperature being sensed Detection by the heat exchanger thermistor exceeds the limit. Malfunction Activated when the temperature being sensed by the Decision heat exchanger thermistor rises above Conditions 74 twices in 30 minutes. Supposed Dirty filter Causes Dirty heat exchanger Faulty heat-exchange sensor over full gas Page:23

Electrify the machine again and turn it on,check whether the wind temperature is below 74 the malfunction is reported after the machine has run for a little time? Check room temperature and pipe temperature sensor. the indoor unit blows poorly due to blocked filters or poor condition of the fan? 1) Clean the filters 2) Reinstall the fan. Use some tools to measure the pressure of system The system is over charged with gas Page:24

10. Power Supply Over or under voltagve fault Indoor display F11 Outdoor display: LED1 flash 6 times Method of An abnormal voltage rise or fall is detected by checking Malfunction the specified voltage detection circuit Detection. Malfunction The DC voltage between P and N Decision is below 150v or up 390v Conditions Supply voltage not as specified Supposed the IPM module is broken Causes the outdoor PCB is broken Page:25

Check the power supply Is it rated power? No This question may be caused by the power Yes the power module may be damage Page:26

11. Loop of the station detect error Outdoor Display : LED1 flash 19 times Indoor Display : F11 Method of : the position of the compressor rotor can not Malfunction detected normally Detection Malfunction : when the The wiring of compressor is wrong Decision or the connection is poor; or the compressor Conditions is damaged Supposed : Faulty The wiring of compressor Causes Faulty compressor Faulty PCB Page:27

Within 3 minutes after the machine is supplied with power and turned on, the compressor could not star up 1. The wiring of compressor is incorrect or the connection is poor; 2. The compressor is damaged At frist, the compressor start up,soon the compressor stopped with the LED1 on the outdoor PCB blinks1hzfor 19 times IPM Module is damaged and needs replacing. the Malfunctions exist also,. The compressor is damaged replace a new one Page:28

12. Over-current of the compressor Outdoor Display : LED1 flash 24 or 25 times Method of : The current of the compressor is too high Malfunction Detection Malfunction : when the IPM Module is damaged Decision or the compressor is damaged Conditions power supply. voltage is too low or too high Supposed : Faulty IPM Module Causes Faulty compressor Faulty power supply Page:29

Electrify the machine again and turn it on,if malfunctions are reported before or upon the compressor being started up, Yes Test if the resistance values among Phases U, V and W of compressor are equal and about 1 and 3Ω., No IPM Module is damaged compressor is damaged The compressor is started normally, but malfunctions are reported after it has run for some time. Check the power supply. If the voltage is too low or too high Yes Repair the power supply Page:30

PMSM PWM PWM A/D A/D Is Ed PWM Im PAM Page:31