Haier N Series Service Manual page 22

9
ce_temp_3+3
ice_temp_3 6
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.
7.1.5.6 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 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.
7.1.5.7 The socket protect
If the socket temperature is higher than 120
malfunction(the LED light flashing 36 times).The compressor stops for more than 3 minutes, the
compressor recovers.
7.1.5.8 T emperature protection of the outdoor refrigerating coil
When the Defrost 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
frequency of the compressor. When the temperatures are lower than 60 , relieve the Defrost
temperature protection.
7.1.5.9 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
Increasing slowly
Decreasing slowly
Decreasing rapidly
Stop
ice_temp_1 , the frequency of the compressor decreases 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
20
11 //ice_temp_3+5
8 //ice_temp_3+2
Keeping the frequency
6
ice_temp_1
,the outdoor unit will stop and report
and higher than 60
Functions and Control
, keep the
Domestic air conditioner