Haier 1U125S2SN2FA Installation Manual page 24

Error
Malfunction Description
code
DC voltage or AC voltage
19
low
Indoor pipe temperature too
20
high protection
Indoor pipe sensor
21 temperature too low
protection
22 PFC circuit loop overcurrent
Temperature too high for
23
compressor driver module
24 Compressor start failure
Input overcurrent of the
25
drive module
Lack phase of the drive
26
module
Input current sampling
27
circuit fault
28 No wiring of the compressor
Compressor overcurrent
37 detected by compressor
driver module
Drive module's ambient
38
temp, sensor abnormal
Mid-condenser temp,
39
sensor TC abnormal
High pressure switch
42
abnormal
Low pressure switch
43
abnormal
Outdoor condenser
44 temperatureTC too high
protection
System low pressure
45
protection
Note:
1. The ou.tdoor control board's LED3 indicates the outdoor error code, for example, the error code 12, LED3 will
display 12 and keep flashing.
2. NO-resumable means error will not clear unless: a. clean out the fault factor b. Cut the power supply off and
reoffer again after point a achieved.
3. The indoor unit can also indictes the outdoor malfuction code too. Please refer to indoor unit manul to get the
method.
Diagnosis and Analysis
AC power supply of the driver module get voltage lower
than 155VAC or driver module get high DC-BUS voltage
lower than 180VDC.
Indoor pipe temperature Tm over 63°C, error clear
within 3 minutes if temperature goes down and lower
than 52°C.
Indoor pipe temperature too low,outdoor unit stop to
prevent indoor heat exchange system icing and to
prevent the indoor unit outlet air too low at the same
time
Overcurrent been detected in power factor correction
circuit loop.
Compressor driver module's PIM temperature over
90°C, Error stat-us lock if it occurs 3 times in 1 hour.
Compressor start failure been detected by driver
driver module or wrong compressor wiring
Input current of the compressor drive module higher than
EEPROM setting(details refer to service manual ).
Lock if it occurs 3 times in 1 hour.
Lack phase of the drive module's power supply.(three
phase type)
The driver module's input current sampling circuit
damaged.
No wiring between compressor and it's driver module.
Compressor phase U or V or W current over current
detected by compressor driver module（details refer
to service manual ）
The temperature detected is not within the range of
-25°C to 150 °C.
The temperature detected is not within the range of
-55°C to 90 °C.
After compressor running for 3 minutes, switch been
detected open circuit for 30seconds, Error lock if it
occurs 3 times in 1 hour.
After compressor running for 3 minutes, switch been
detected uncon-nected for 60seconds or unconnected
for 30seconds at standby.
The maximum temperature value of Tc and Te is over
65 °C, Error lock if it occurs 3 times in 30 minutes.
The minimum temperature value of indoor pipe Tm
and outdoorTs is lower than-45 °C at cooling mode or
minimum temperature value of outdoor Tc and
outdoor Te is lower than-45 °C at heating mode.
24
Remark
Resumable
Resumable
Resumable
Resumable
Non-resumable
Non-resumable
Non-resumable
Non-resumable
Resumable
Non-resumable
Resumable
Resumable
Resumable
Non-resumable
Non-resumable
Non-resumable
Non-resumable