Haier AD182AMERA Service Manual page 61

Put the first bit of dip switch on the indicator board at ON, the unit will enter compulsory cooling
operation, as follow:
Compressor Current, discharging
startup protection and failure
treatment
normal normal
Compulsory heating operation
Put the second bit of dip switch on the indicator board at ON, the unit will enter compulsory heating
operation, as follow:
Compressor Current,
startup discharging
protection
failure treatment
normal normal
8.2.9 High pressure switch
3 minutes later after compressor starts up, the system will check the pipe pressure. If the pipe
pressure is over high and high pressure switch acts for over 30 seconds, the compressor and
outdoor motor will stop, 3 minutes later, the unit will resume. If in 30 minutes the unit stops for 3
times because of overhigh pressure, the system will alarm, then compressor will not start up again;
when being electrified after being powered off, the protection will be cancelled.
2.10 Low pressure switch
When compressor stops, if low pressure switch acts for 30 seconds contineously, the unti will alarm.
The failure will be sent to indoor unit, it will resume due to the pressure signal.
When compressor starts up, in 3 minutes, low pressure switch will be shielded.
When compressor is running, the unit will check pipe pressure, when pipe pressure is over low and
low pressure switch acts for 30 seconds, compressor and outdoor motor stop, the unit will alarm, and
compressor will not start up; when being electrified after being powered off, the protection will be
cancelled.
In defrosting or in 6 minutes after defrosting is over, low pressure switch will be shielded.
8.2.11 Failure code and troubleshooting
Alarm lamp is off when no failure
Ensure that alarm indicating time is over 2 minutes and 50 seconds.
(1): Resumable alarm, and will be sent to indoor unit.
(2): Resumable alarm, but if in 30 minutes it occurs 3 times, it can be resumed only when being
Commercial Air Conditioner
Operation before
the base open angle
Normal
Operation before
the base open angle
and
Normal
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AD182AMERA, AS182AVERA
3 minutes later
compressor is running
1: fixed base open angle
2: fixed running frequency 60HZ
3: fixed outdoor motor speed:
class-7
3 minutes later after
compressor is running
1: fixed base open angle
2: fixed running frequency
50HZ
3: fixed outdoor motor speed:
class-7
Model: AU182AFERA
after Manual adjustment
1: angle adjusted by
hand
2: frequency adjusted
by hand
3: fan speed adjusted
by hand
Manual adjustment
1: angle adjusted
hand
2: frequency adjusted by
hand
3: fan speed adjusted by
hand
by