Haier MRV S II - Failure Code

5555
Failure Code
Digital tube
indication on
master unit
Indication on
wired controller
(hex)
Failure code
denition
Failure description Remarks
20 20-0
Defrosting temp.
sensor TE1 failure
AD value is below 11 (open circuit) or
over 1012 (short circuit) for 60seconds, in
cooling mode, if the sensor is abnormal,
the unit does not deal with it, besides,
in defrosting and within 3 minutes after
defrosting, no alarm.
Resumable
20 20-1
Defrosting temp.
sensor TE2 failure
21 21
Ambient temp.
sensor Ta failure
AD value is below 11 (open circuit) or
over 1012 (short circuit) for 60seconds,
in defrosting and within 3 minutes after
defrosting, no alarm.
Resumable
22 22
Suction temp.
sensor Ts failure
AD value is below 11 (open circuit) or
over 1012 (short circuit) for 60seconds,
in defrosting and within 3 minutes after
defrosting, no alarm.
Resumable
23 23
Discharging temp.
sensor Td failure
After compressor is running for 5 minutes,
AD value is below 11 (open circuit) or
over 1012 (short circuit) for 60seconds, in
course of startup, defrosting and within 3
minutes after defrosting, no alarm.
Resumable
24 24
Oil temp. sensor
Toil failure
AD value is below 11 (open circuit) or over
1012 (short circuit) for 60seconds,
if Ta<=-10degree or ET<=-10degree, within
5 minutes, no alarm.
Resumable
26 26-0
Indoor
communication
failureI
For continuous 200 cycles, can not nd
connected indoors.
Resumable
26-1 26-1
For continuous 300seconds, the searched
indoor quantity is less than the set quantity.
26-2 26-2
For continuous 300seconds, the searched
indoor quantity is more than the set
quantity.
27 27
Oil temp.too high
protection (Toil)
Toil≥110degree at interval of 25msec for
twice continuously, and over the set value,
then stop and alarm; 3 minutes later,
resume automatically. If it occurs 3 times in
an hour, conrm the failure.
Once
conrmation,
un-resumable
28 28
High pressure
sensor Pd failure
AD value is below 11 (open circuit) or
over 1012 (short circuit) for 30seconds,
in defrosting and within 3 minutes after
defrosting, no alarm.
Resumable
13. Failure Code