Haier AV10IMWEWA Design, Installation & Maintenance Instruction page 253

Indication
LD indication
on wired
on master
controller
unit
(hex)
37-0 25
37-1 25
37-2 25
38 26
39-0 27
39-1 27
39-2 27
Failure code
definition
S phase default
Default phase of
3-phase power T phase default
supply or phase
S phase and T phase are normal, but sequence(phase reversion)
sequence error
is wrong
High pressure sensor
Pd protection against Wrong voltage frequency. Check BM3-5 setting
too low pressure
After compressor starts up (excluding the remains operation), too low
pressure is detected for 5 mins continuously (cooling: Ps< 0.10MPa;
Low pressure sensor
Ps protection against
heating: Ps< 0.05MPa; oil return: Ps<0.03MPa), stop and alarm.
too low pressure
Resume automatically after 170 secs. Three times an hour, failure
confirmed.
After compressor starts up, ε>8.0 is detected for 5 mins
continuously, stop and alarm; ε >9.0 is detected for 1min
Compression ratio
continuously under cooling or ε>8.5 under heating, stop and
ε protection against
alarm.
too high ratio
Resume automatically after 170 secs. Four times an hour,
failure confirmed.
Normally in operation (excluding startup, deforest, oil return,
Compression ratio remains, stop), detect ε <1.8 for continuous 5 mins, stop
ε protection against and alarm. Or ε<1.5 for continuous for 1min, stop and alarm.
too low ratio Resume automatically after 170 secs. Four times an hour,
failure confirmed.
Failure description
252
Remarks
Once confirmation,
Unresumable
Once confirmation,
Unresumable
Once confirmation,
Unresumable
Once confirmation,
Unresumable