2HUM18HC03/R2(DB)-SM Wiring diagrams
26
Domestic air conditioner
TC The compressor stops
Fgh_t1ˉ2 Fgh_t1 65ć
N Decreasing the frequency rapidly Fgh_t2
59ć
Fgh_t2ˉ2 P Decreasing the frequency slowly
Fgh_t3 55ć
Fgh_t3ˉ2 Q Prohibiting increasing the frequency
Fgh_t4 51ć
Fgh_t4ü2 R Increasing slowly Fgh_t5 47ć
Fgh_t5ü2
Normal
N˖Decreasing at the speed of 1HZ/1 ⾦ second
P˖Decreasing at the speed of 1Hz/10 ⾦ seconds
Q˖Continue to keep the last-time instruction cycle
R˖Increasing at the speed of 1Hz/10seconds
Remarks: the outdoor unit
5.2.5.3 The control of preventing the overcurrent of the compressor
ƽDuring the starting process of the compressor, if the curren of the compressor is greater than
17A 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.
ƽDuring the starting process of the compressor, if the AC current is greater than 12A, 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 10A, 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 9A, the
frequency of the compressor increases at the prohibited speed.
ƽDuring the starting process of the compressor, if the AC current is greater than 8A, the
frequency of the compressor increases at the speed of no faster than 0.1HZ/second.
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.
ŁWhen the outdoor environment temperature is higher than 40ć, AC current protection value
decreases by 10AD
łWhen the outdoor environment temperature is higher than 46ć,AC current protection value
decreases by 15AD
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