Haier AS09/12GS2ERA Service Manual page 32

ice_temp_4 9
ice_temp_3 7
ice_temp_2 5
ice_temp_1 3
0
When Tpg_indoor
1HZ/1second.
When Tpg_indoor
1HZ/10seconds.
When Tpg_indoor begins to rise again, and ice_temp_2 =Tpg_indoor = ice_temp_3 , the frequency
of thecompressor doesn't change.
When ice_temp_3 Tpg_indoor ice_temp_3+3 , the frequency of the compressor increases at the
speed of 1HZ/10seconds.
For example, Tpg_indoor<= 0
underload malfunction, but don't send malfunction report to the indoor.
The compressor stops for more than 3 minutes, Tpg_indoor> ice_temp_3+2 , the compressor
recovers.
5.2.6.6 The frequency limitation of modification rate
In the field which is controlled by high frequency, if the modification rate is not high enough, the
control-driven on chip will enter into weak magnetic control, this will help to relieve the problem of
modification rate. If during the course of weak magnetic control, the modification rate is still not high
enough, enter into the control of decreasing frequency until the alarm of modification rate is relieved.
5.2.6.8 Temperature protection of the outdoor refrigerating coil
When the defrosting temperature and the sensor's temperature are higher than 65 , the frequency of
the compressor decreases 1hz/10seconds. Keep the frequency until it decreases to the lowest
frequency. When the temperatures are lower than 65
the compressor. When the temperatures are lower than 60 , relieve the defrosting temperature
protection.
5.2.6.9 Malfunction display and malfunction handling
a) For the complete appliance's malfunctions Annex 2
If there's malfunction with the outdoor unit, the light of the outdoor unit will flash and its frequency is
1HZ, the number of times is according to the table, when a round of flashing is finished, the light
shoud be off for 5 seconds.
b) For the units' malfunctins Annex 1
If there's malfunction with the units, this will not affect the run of the complete appliance, but this can
be displayed by the malfunction light, the light flashing frequency is 0.5HZ, the number of times is
according to the malfunction table of the indoor units. When a round of flashing is finished, the light
shoud be off for 10 seconds. Then report according to the order : unit A unit B unit C unit D, that
AS09/12GS2ERA 1U09/12BS1ERA-SM
Increasing slowly
Stop
ice_temp_1 , the frequency of the compressor decrease s at the speed of
ice_temp_2 , the frequency of the compressor decreases at the speed of
last for 2 minutes, and then the outdoor unit will stop, and report
12 //ice_temp_4 +2
8 //ice_temp_3+2
Keeping the frequency
Decreasing slowly
Decreasing rapidly
and higher than 60 , keep the frequency of
Function and control
ice_temp_1
Domestic Air Conditioner