Haier HSU24VHG(DB)-G&W Service Manual page 27

5.2.5.4 The protection function of AC current:
During the starting process of the compressor, if the AC current is greater than 15A, the frequency of
the compressor decreases at the speed of 1HZ/second.
During the starting process of the compressor, if the AC current is greater than 13A, the frequency of
the compressor decreases at the speed of 0.1HZ/second.
During the starting process of the compressor, if the AC current is greater than 11A, the frequency of
the compressor increases at the prohibited speed.
During the starting process of the compressor, if the AC current is greater than 10A, the frequency of
the compressor increases at the speed of no faster than 0.1HZ/second.
Remarks: when the outdoor temperature is high, there's compensation for AC current protection.
When the outdoor environment temperature is higher than
decreases by 10AD
When the outdoor environment temperature is higher than
decreases by 15AD
When the outdoor environment temperature is higher than
decreases by 20AD
5.2.5.5 Antifreezing protection of the indoor heat exchanger
When refrigerating/heating, prevent freezing.
Tpg_indoor
running state).
ice_temp_3+3
ice_temp_3
ice_temp_2
ice_temp_1
When Tpg_indoor
1HZ/1second.
When Tpg_indoor
1HZ/10seconds.
is the minimum value of the effective indoor unit (start it and it is in accord with the
38
°F
°F
28
25 °F
19 °F
9
ice_temp_ , the frequency of the compressor decreases at the speed of
12 °F
ice_temp_ 25 , the frequency of the compressor decreases at the speed of
°F
137
156
169
°F
44 //ice_temp_3+5
Increasing slowly
35 °F
//ice_temp_3+2
Keeping the frequency
28 °F
Decreasing slowly
Decreasing rapidly
Stop
26
Functions and Control
, AC current protection value
°F
,AC current protection value
°F
,AC current protection value
°F
ice_temp_1
Domestic Air Conditioner