Haier 1U24TR4ERA Service Manual page 21

TC(℃)
Fgh_t1－2
Fgh_t2－2
Fgh_t3－2
Fgh_t4—2
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:
●During 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.
●During 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.
●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.
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 40℃, AC current protection value
The compressor stops
N Decreasing the frequency rapidly
P Decreasing the frequency slowly
Q Prohibiting increasing the frequency Fgh_t4
R Increasing slowly
19
Functions and control
Fgh_t1 65℃
Fgh_t2 59℃
Fgh_t3
Fgh_t5
Domestic air conditioner
55℃
51℃
47℃