Failure Code - Haier AU282FHERA(H) Installation Manual

Failure code

Inverter outdoor unit failure code
Digital tube Indication
indication on wired
on master controller
unit (hex)
20 20-0
20 20-1
21 21
22 22
23 23
26 26-0
26-1 26-1
26-2 26-2
30 30
33 33
34 34
35 35
43 43
46 46
49 49
Failure code
Failure description
definition
Defrosting temp.
AD value is below 11(open circuit) or over 1012(short
sensor Te failure
circuit) for 60seconds, in cooling mode, if the sensor
is abnormal, the unit does not deal with it, besides, in
Defrosting temp.
defrosting and within 3 minutes after defrosting, no alarm
sensor Tc failure
AD value is below 11(open circuit) or over 1012(short
Ambient temp.
circuit) for 60seconds, in defrosting and within 3 minutes
sensor Ta failure
after defrosting, no alarm
AD value is below 11(open circuit) or over 1012(short
Suction temp.
circuit) for 60seconds, in defrosting and within 3 minutes
sensor Ts failure
after defrosting, no alarm
After compressor is running for 5 minutes, AD value
Discharging temp. is below 11(open circuit) or over 1012(short circuit) for
sensor Td failure 60seconds, in course of startup, defrosting and within 3
minutes after defrosting, no alarm
For continuous 200 cycles, can not find connected indoors
Indoor For continuous 300seconds, the searched indoor quantity is
communication less than the set quantity.
failure
For continuous 300seconds, the searched indoor quantity is
more than the set quantity.
High pressure If disconnect for 50ms continuously, alarm. If alarm 3 times
switch HPS failure in an hour, confirm the failure
EEPROM failure EEPROM failure
Td≥115°C at interval of 25msec for twice continuously, and
Discharging temp.
over the set value, then stop and alarm; 3 minutes later,
too high protection
resume automatically. If it occurs 3 times in an hour, confirm
(Td)
the failure.
If the compressor continuously runs 10 minutes without
4-way valve 4-way valve reversing failure, three minutes later, resume
reversing failure automatically. If it occurs 3 times in an hour, confirm the
failure.
In normal operation, if Td<CT+10°C for continuous 5
minutes, the unit stops and alarms.2 minutes and 50
Discharging temp. seconds later, resume automatically. If it occurs 3 times
sensor Td too low in an hour, confirm the failure. After fixed frequency
protection compressor alarms, inverter compressor will continue to
run. If fixed frequency compressor has been locked for 3
times, the unit will stop and alarm.
Communication
with inverter board No communication within 30 seconds continuously
failure
Low pressure If disconnect for 50ms continuously,alarm.If alarm 3 times in
switch LPS failure an hour,confirm the failure
19
Remarks
Resumable
Resumable
Resumable
Resumable
Resumable
Once
confirmation,
un-resumable
Once
confirmation,
un-resumable
Once
confirmation,
un-resumable
Once
confirmation,
un-resumable
Once
confirmation,
un-resumable
Resumable
Once
confirmation,
un-resumable