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HAND in HAND

HIGHER and HIGHER

Haier Air conditioner

For EuropeFor Europe

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For EuropeFor Europe

HSU-09/12HVA103/R2(DB) HSU-09/12RHA103/R2(DB)

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High work-intense protectionE9

Indoor fan motor malfunctionE14

Indoor EEPROM errorE4

Heat-exchange sensor failure E2

Room temperature sensor failure E1Indoor

Malfunction

Communication fault between indoor and outdoor units15E7Indoor and

Outdoor

Outdoor (LED1 flash

times)indoor

Description

Code indication

Error Codes and Description indoor and outdoor display(1)

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Over current protection for single-phase of the compressor25---

Over current of the compressor24---

Loop of the station detect error19F11

deviate from the normal for the compressor18

Exhaust temperature sensor failure13F25

Ambient temperature sensor failure12F6

Frost-removing temperature sensor failure10F21

outdoor fan motor malfunction9

Overheat protection for exhaust temperature8F4

Power voltage is too high or low6F11

Over pressure or Overheat protection for the compressor5

Communication fault between the IPM and outdoor PCB4F11

Over current protection of AC electricity for the outdoor

model

3F22

The protection of IPM2F11

Outdoor EEPROM error1F12Outdoor

Malfunction

Outdoor (LED1 flash

times)indoor

Description

Code indication

Error Codes and Description indoor and outdoor display(2)

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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.

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Thermistor resistance check method :Remove the connector of the thermistor on the PCB, and measure the resistance of thermistorusing tester.The relationship between normal temperature and resistance is shown in the value of

indoor thermistor.

Thermistor resistance check

Is it normal?

Yes

NO

Yes

Is it normal? NO

Check the connector connection.

Correct the connection

Replace the thermistor

Replace the indoor unit PCB

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2.Indoor fan motor malfunction

Indoor Display E14

Method of The rotation speed detected by the Hall IC during fan

Malfunction motor operation is used to determine motor

Detection 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

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NO

the indoor motor is damaged and need replace

the indoor motor is damaged and need replace

the indoor pcb is damaged and need replace

NO

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?

Electrify the machine again and turn it on in the c ooling operation, Measure voltage between the positions 1 ( red wire ) and 3( black wire) of Terminal CN13 on the indoor PCB

the indoor pcb is damaged and need replacethe voltage is about 90-200vac

whether terminal CN13 and CN7 on indoor PCB well inserted or not?

Pull out and reinsert the terminalsYES

NO

YES

YES

NO

YES

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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

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Turn off the power.check if the compressor wiring commect.

NO

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

Yes

Normal?

Yes

NO

Test the resistance values among Phases U, V and W of compressor

If the resistance are equal and about 1- 3Ω

NO

Yes

Renewedly connect the wiring

Change the IPM module

Replace the compressor

Check the installation condition.

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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

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NO

Replace the outdoor mainboard with a new one

NO

Are they good? 1) Pull out and reinsert the terminals. 2) Replace connected wire

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?

Replace the outdoor IPM module with a new one.

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

YES

YES

NO

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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 connectionCauses Faulty thermistor

Faulty PCB

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Is it normal?

Check the connector connection.

check ThermistorResistance

Correct the connection

Is it normal? Replace the thermistor

Replace the outdoor unit PCB

NO

YES

NO

YES

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6. Overheat Protection For Exhaust Temperature

Indoor display : F4

outdoor display : LED1 flash 8 times

Method of : the exhaust temperature control is checked with the

Malfunction temperature being detected

Detection by the exhaust pipe thermistor

Malfunction : when the compressor discharge temperature is above

Decision 117

Conditions

Supposed : the cryogen may have been leaked or other

causes to make he exhaust temperature too high. Causes Faulty thermistor

Faulty PCB

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the temperature exceeds 117 shortly after the unit starts ?

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 .

Electrify the machine again and turn on , then measure the temperature at the exhaust temperature sensor of the compressor on the outdoor unit

Measure the temperature at the exhaust temperature sensor of the compressor on the outdoor unit

Malfunctions occur even though the Exhaust temperature is below 117 .

Exhaust temperature sensor is broken and needs be replaced

YES

NO

YES

NOPull out the exhaust sensor and measure its resista nce at standard temperatures according to the resistance-temperatur e table

the results deviate much ?

The sensor is damaged. Replace the sensor with a new one.

The outdoor mainboard is damaged and needs be replaced

YES

NO

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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

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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

NO

YES

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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

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Restart the unit and it becomes normally.

If starting up normally, but malfunction occurs again after a while

Check whether the linking cable between the indoor and outdoor is well connected or whether its core wires are well insulated.

The outdoor mainboard needs dehumidification.

The outdoor PCB needs dedust.

1. Reconnect the linking cable;2. Replace the linking cable with new one.

Yes

Yes

Yes

No

No

No

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YesCheck If the LED1 on the indoorblinks interruptedly

No

If the voltage is of a constant value of 0V DCto5V DC

Yes

measure the voltage between Jumpers 3 and 4 of IC12 on the indoor mainboard with a multimeter.

NO

The outdoor mainboard is damaged; Replace them with a new one.

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.

If 230VAC is available but 310DC not, the power module is damaged, replace it with a new one.

Test the outdoor power supply (230VAC and +310VDC) with a multimeter.

The outdoor mainboard is damaged; replace it with a new one.

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.

If the value is constant at about 30V, the indoor mainboard is damaged, replace it with a new one.

If both 230VAC and 310DC are available, measure 12V(from7805) is available.

No

Yes

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R16

10K

C6102

C7102

IC2

R15

330

R182.2K

R14 1M

C5103

R132.2K

D6

1N4007D5

1N4007

R12

2W6.8K1

N

1

COM

R17

10K

+5

1

24

56

INDOOR UNIT

IC1

LED1

DQ12SD1781K

receive

send

+5V

TLP371R1 820

SEND

R2

1M

C1 0.001UF

R96.8K

R106.8K

R116.8K

D4 1N4007

R81M

C4

22UF/400VDC

D3

1N4007

D2

1N4007

C30.01UF

R61K

R510K

R710K

D1 1N4007

OUTDOOR UNIT

1

COM

1

N

1

LPOWER

IC4

R310K

R4

10KC20.01UF

+5V

RECEIVE

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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

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YES

NO

the malfunction is reported after the machine has run for a little time ?

Check room temperature and pipe temperature sensor.

Electrify the machine again and turn it on ,check whether the wind temperature is below 74

the indoor unit blows poorly due to blocked filters or poor condition of the fan?

1) Clean the filters2) Reinstall the fan .

Use some tools to measure the pressure of system

The system is over charged with gas

YES

YES

NO

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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

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This question may be caused by the power

the power module may be damage

Check the power supply

Is it rated power? No

Yes

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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

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YES

NO

1. The wiring of compressor is incorrect or the connection is poor;

2. The compressor is damaged

IPM Module is damaged and needs replacing.

At frist, the compressor start up ,soon the compressor stopped with the LED1 on the outdoor PCB blinks1Hzfor 19 times

the Malfunctions exist also, . The compressor is damaged replace a new one

Within 3 minutes after the machine is supplied with power and turned on, the compressor could not star up

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12. Over-current of the compressor

Outdoor Display : LED1 flash 24 or 25 times

Method of : The current of the compressor is too highMalfunction 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

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IPM Module 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

Repair the power supply

No

Yes

Electrify the machine again and turn it on ,If malfunctions are reported before or upon the compressor being started up,

YesTest if the resistance values

among Phases U, V and W of compressor are equal and about 1 and 3Ω.

,

compressor is damaged

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A/D

PWMPWM

A/D

PWM

PAM

PMSM

Is Ed

Im