Haier AB182ACERA Service Manual page 46

2.080V≤current<2.332, frequency reduces continuously
current>2.332V, unit shutoff
Note: The current limitation for different models, you can choose it due to the different distributing
voltage of the hardware current detecting circuit.
(2) Compressor overheat protection
Tc(compressor temperature)< 97℃, no limited
103℃≤Tc<108℃, frequency not change
Tc≥120℃, unit shutoff
97℃, all resume.
(3) Anti-freezed protection
Te(evaporator temperature)>8℃, no limited
2℃≤Te<5℃, frequency not change
Te<-1℃, 5 minutes later, the unit shutoff (commercial unit is 8 minutes)
Te>8℃, all resume.
(4) In cooling mode, outdoor heat exchanger overload protection
Te<53℃, not limited
59℃≤Te<62℃, frequency not change
Te≥72℃, unit shutoff
Te<53℃, all resume
When the unit stops, the fan motor of outdoor unit will stop.
(5) High Mode operation
In cooling state of High mode, the temperature will be added 4℃ at the base of the set temperature,
the compressor will run at the frequency with the added temperature. 15 minutes later, the High mode
will be cancelled automatically.
In High mode, the indoor fan is High speed. The evaporator anti-freezed function, ourdoor heat
exchanger overload protection, compressor overheat protection and over current protection are valid
(identical to that of cooling mode).
(6) Soft Mode operation
In cooling state of Soft mode, the frequency will depend on the current at the frequency set in the chip,
when the current is below half of the rated current at rated condition. The fan speed is Auto Fan until
you change the operation mode. The Auto Fan of Soft mode depends on the temperature difference.
Ta-Ts≥5℃ High speed
1℃≤Ta-Ts<5℃ Med speed
1℃≤Ta-Ts<1℃ Low speed
Note: Ta: indoor ambient temperature; Ts: set temperature
4. Dehumidification operation
Outdoor unit:
Ta-Ts≥2℃, run at cooling mode
Ta-Ts<2℃, the compressor will run at 34Hz and 60Hz in turn, and keeps 6 minutes at 34Hz; 10
minutes at 60Hz.
Ta <15℃, Ts(minimum)=16℃, the compressor will run fitfully, run for 10 minutes, stop for 6 minutes;
and they will run in turn.
5. Heating operation
46
Commercial Air Conditioner
Model: AB182ACERA
AC182ACERA