Functions and control
19 Domestic air conditioner
TC(ć) The compressor stops Fgh_t1 65ć
Fgh_t1ˉ2
Fgh_t2ˉ2 N Decreasing the frequency rapidly Fgh_t2 59ć
P Decreasing the frequency slowly Fgh_t3 55ć
Fgh_t3ˉ2
Fgh_t4—2 Q Prohibiting increasing the frequency Fgh_t4 51ć
R Increasing slowly Fgh_t5 47ć
Fgh_t5—2
Normal
N˖Decreasing at the speed of 1HZ/1 second
P˖Decreasing at the speed of 1Hz/10 seconds
Q˖Continue to keep the last-time instruction cycle
R˖Increasing at the speed of 1Hz/10seconds
Remarks: the outdoor unit
7.1.5.3 The control of preventing the over current of the compressor:
ƽDuring the starting process of the compressor, if the current of the compressor is greater than 11A
for 3 seconds, stop the compressor and alarm, after 3 minutes, start it again, if such state appears 3
times in 20 minutes, stop the compressor and alarm, and confirm the malfunction. Then continue to
run it only after the power is off.
ƽDuring the starting process of the compressor, if the AC current is greater than 8.5A, the frequency
of the compressor decreases at the speed of 1HZ/second.
ƽDuring the starting process of the compressor, if the AC current is greater than 8A, the frequency of
the compressor decreases at the speed of 0.1HZ/second.
ƽDuring the starting process of the compressor, if the AC current is greater than 7A, the frequency of
the compressor increases at the prohibited speed.
ƽDuring the starting process of the compressor, if the AC current is greater than 6.5A, the frequency
of the compressor increases at the speed of no faster than 0.1HZ/second.
7.1.5.4 The protection function of AC current:
During the starting process of the compressor, if the AC current is greater than 12A for 3 seconds,
stop the compressor and alarm, after 3 minutes, start it again, if such state appears 3 times in 20
minutes, stop the compressor and alarm, and confirm the malfunction. Then continue to run it only
after the the power is off.
During the starting process of the compressor, if the AC current is greater than 9A, 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 8A, 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 7A, the frequency of
the compressor increases at the prohibited speed.
During the starting process of the compressor, if the AC current is greater than 6.5A, 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.
(1) When the outdoor environment temperature is higher than 40ć, AC current protection value
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