Haier AB182ACERA Service Manual page 37

The inverter unit DRY operation:
Tr-Ts＞2℃, running in COOL mode;
Tr-Ts≤2℃, the compressor will run at 34Hz and 60Hz by turns, the duration time is 6 minutes at
34Hz, and the duration time is 10 minutes at 60Hz;
Tr-Ts＜15℃, (Ts=16℃), the compressor wil run intermittently, run for 10 minutes and stop for 6
minutes by turns at 60Hz.
6. FAN mode control
The compressor and the outdoor motor will stop running, indoor motor can be set at high/med/low
speed, the fan blade can swing or stay at one position. In this mode, you can set the TIMER and
SLEEP function.
7. HEAT mode control
7.1 4-way valve control: in heating mode, compressor startup----4-way valve being electrified 10
seconds ahead; compressor running----4-way valve retains original state; compressor
shutoff----4-way valve being powered off 2 minutes and 50 seconds later (except for defrosting,
4-way valve being electrified 5 seconds ahead, and being powered off 55 seconds later).
7.2 In heating mode, for everytime the compressor startup (thermostat ON), within 6 minutes, the
4-way valve will not be limited by the temperature sensor, but for the set temperature change,
shutoff signal and the protection, the compressor can stop immediately without 6-minute limitation.
7.3 ΔT≥1 compressor running, indoor motor runs at anti-cold air mode;
ΔT≤-1 compressor stops, indoor motor runs at blowing remaining heat mode;
-1<ΔT<1 compressor retains original state
7.4 Overheat protection (for the unit with outdoor PCB, the outdoor motor is controlled by outdoor
unit, but the compressor is still controlled by indoor unit, and their temperature points will not be
accordant completely)
In heating mode, compressor has started up and indoor motor has run for over 30 seconds, if indoor
coil temperature Tg>60℃, outdoor motor will stop; if Tg<56℃, and outdoor motor has stop for 45s,
outdoor motor will run again; if Tg>73℃, the compressor will stop and indoor motor will run
according to the thermostat state. After the compressor stops for 3 minutes and Tg reduces to 48℃,
the unit will resume to heating mode, and the compressor and the outdoor motor will run again.
7.5 Temperature cutoff protection
In heating mode (besides the defrosting), the unit will check indoor coil temperature every time the
compressor has run for 1 minutes, when indoor coil temperature Tg＜Tr-5, the unit will stop and 3
minutes later restart up; if the temperature cutoff occurs for 3 times continuously, the unit will stop
and alarm.
7.6 Anti-cold air function in heating mode
After entering heating mode, or last defrosting is over, the compressor will start up, if Tg＜28℃,
indoor motor will stop; if 38℃>Tg≥28℃, indoor motor will run at low speed; if Tg≥38℃ or the
compressor has run for over 4 minutes, indoor motor will run at the set speed; once the motor has
started up, it will not stop because of Tg reduction.
7.7 Blowing remaining heat function
In heating mode, the thermostat is OFF, the compressor stops, indoor motor will run at low speed
until Tg＜28℃ and has run for 50 seconds at least.
7.8 Note: in heating mode, "the compressor stops----indoor motor delays to stop" adjust if the pipe
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Commercial Air Conditioner
Model: AB182ACERA
AC182ACERA