Airwell AWAU-YHD009-H11, Руководство по обслуживанию

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TROUBLESHOOTING
SM HHD 1-A.1 GB 13-3
Malfunction
2x7
Segments IDU LEDs Possible causes / Actions
Stop rise/HZ down due to
IDU defrosting protection
FH
1. Poor air-return in indoor unit
2. Fan speed is abnormal
3. Evaporator is dirty.
DC Over Voltage PH
COOL Indicator OFF 3S and blink 11
times 1. AC power supply is higher than 265V
2. Outdoor PCB circuit malfunction
DC Under Voltage PL
HEAT Indicator OFF 3Sand blink21
times
1. AC power supply voltage is less than
150VAC
2. Outdoor PCB circuit malfunction
DC Over Current P5
COOL Indicator OFF 3Sand blink15
times
1. Abnormal power input voltage.
2. Compressor wiring mistake.
3. Liquid and gas valve are not open.
4. EEV damaged or not proper working
5. Poor heat exchange.
6. Over charged system.
Charging malfunction of
capacitor
PU
HEAT Indicator OFF 3Sand blink17
times
1. Reactor open
2. Charging relay or other components
damaged on PCB.
HST Failure P7
HEAT Indicator OFF 3Sand blink18
times
1. Senor was broken or damaged
2. PCB temperature detection cuircuit
has problem
HST over heating
protection
P8
HEAT Indicator OFF 3Sand blink19
times
1. Insufficient attachment of IPM module
to Heatsink
2. Outdoor PCB problem.
Compressor overload
protection
H3
HEAT Indicator OFF 3Sand blink3
times
1. EEV connection problem or damaged
2. Refrigeratn leakage
3. OLP damaged
IPM protection H5
HEAT Indicator OFF 3Sand blink5
times
1.Abnormal power input voltage.
2.Compressor wiring mistake.
3.Liquid and gas valve are not open.
4.EEV damaged or not proper working
5.Poor heat exchage.
6.Over charged system.
No feedback of indoor
motor
H6
OPER Indicator OFF 3S and blink 11
times
1. Bad contact of DC motor feedback
terminal.
2. Bad contact of DC motor control end.
3. Fan motor is blocked.
4. Motor malfunction.
5. Malfunction of main board rev
detecting circuit.
Desynchronizing of
compressor
H7
HEAT Indicator OFF 3Sand blink7
times
1. Abnormal power input voltage.
2. Compressor wiring mistake.
3. Liquid and gas valve are not open.
4. EEV damaged or not proper working
5. Poor heat exchage.
6. Over charged system.
PFC protection HC
HEAT Indicator OFF 3Sand blink6
times
1. PFC module assembly problem.
2. Poor heat exchange of Heatsink
3. PFC reactor problem.
4. Abnormal power voltage
5. PFC circuit problem on PCB
Outdoor DC fan motor
malfunction
L3
OPER Indicator OFF 3S and blink 23
times 1.DC fan motor malfunction or blocked
2.Bad connection
Over Power Protection L9
OPER Indicator OFF 3S and blink 20
times To protect the electronical components
when detect high power
IDU/ODU Mismatch LP
OPER Indicator OFF 3S and blink19
times Indoor unit and outdoor unit doesn't
match
Start-up Failure LC
HEAT Indicator OFF 3Sand blink11
times
1. Compressor wiring mistake
2. Over charged system
3. System not balanced before
compressor starting
4. Compressor problem