Haier 2U14CS1ERA Service Manual page 31

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.
5.2.5.6 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
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.
5.2.5.7 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.
5.2.5.8 Temperature protection of the outdoor refrigerating coil
When the defrosting temperature and the sensor's temperature are higher than 65
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 frequency of the compressor. When the temperatures are lower than 60 , relieve the
defrosting temperature protection.
5.2.5.9 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
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 is, if there's malfunction with several units, then just report the indoor unit
with the highest priority level. Among the unit malfunctions, the priority level of the
communication malfunction is the highest, for others, that appears first will have the priority.
Remarks: in 3 minutes when the compressor stops, the units' malfunctions are not displayed;
2U14CS1ERA-SM
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
chip will enter into weak magnetic control, this will help to relieve the
28
Functions and control
,the outdoor unit will stop,and report
and higher than 60 , keep
Domestic Air Conditioner
, the