Haier AB182ACERA Service Manual page 47

Outdoor unit:
4-way valve electrified
2-way valve shutoff
if the unit shutoff in heating mode or the state changes, the 4-way valve will be not electrified 1 minute
and 50 seconds later.
(1) Fan motor
Ta>16.5℃ Low speed
Ta<13℃ High speed
Tolerance: 3.5℃
(2) Compressor frequency
The compressor frequency changing procedure refers to APPENDIX 1.
Frequency limited condition of ambient temperature:
Ta≥28℃ Max. frequency 60Hz
22℃≤T≤28℃ Max. frequency 72Hz
16℃≤T≤22℃ Max. frequency 84Hz
4℃≤T≤16℃ Max. frequency 108Hz
Max. frequency
T≤4℃
(3) In heating mode, indoor heat exchanger overload protection
Te<48℃ no limited
54℃≤Te<58℃ frequency not change
Te>63℃ outdoor fan motor stops
Te<60℃ outdoor fan motor resumes
72℃ unit shutoff; 52℃ unit resumes.
(4) Current protection
current<1.882V, no limited
2.023V≤current<2.201V, frequency not change
2.32V, fan motor stops
2.25V, fan motor works
current>2.556V, 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.
(5) Compressor overheat protection
Tc(compressor temperature)< 97℃, no limited
103℃≤Tc<108℃, frequency not change
Tc≥120℃, unit shutoff
97℃, all resume.
(6) High mode operation
In heating state of High mode, the temperature will be added 3℃ 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 indoor heat exchanger overload protection,
compressor overheat protection and over current protection are valid (identical to that of heating
mode).
47
Commercial Air Conditioner
120Hz
Model: AB182ACERA
AC182ACERA