Haier AU282AHBEA Service Manual page 220

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.
8.2.5 Heating operation
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
120Hz
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