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7.1.5.2 TC high temperature-preventing control of the indoor heating unit
Tpg_indoor is the highest value of the effective indoor unit (start it and it is in accord with the running state).
The indoor heat exchanger sensor tests the temperature of the indoor heat exchanger. If the temperature is
higher than 48 , decrease the rotate speed of the compressor and do the high temperature-preventing
protection of the indoor heat exchanger; if the temperature of the indoor heat exchanger is lower than 45 ,
recover to the normal control.
TC
Fgh_t1 2
Fgh_t2 2
Fgh_t3 2
Fgh_t4—2
Fgh_t5—2
Normal
N Decreasing at the speed of 1HZ/1second
P Decreasing at the speed of 1Hz/10seconds
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 protection function of AC current:
During 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.
During the starting process of the compressor, if the AC current is greater than 11A, 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 10A, the frequency of the
compressor increases at the prohibited speed.
During the starting process of the compressor, if the AC current is greater than 9A, 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.
When the outdoor environment temperature is higher than 40 , AC current protection value decreases
by 1.5A
When the outdoor environment temperature is higher than 50 ,AC current protection value decreases by
3.5A
The compressor stops
Fgh_t1 63
N Decreasing the frequency rapidly
P Decreasing the frequency slowly
Fgh_t3
Q Prohibiting increasing the frequency
Fgh_t4
R Increasing slowly
19
Functions and control
Fgh_t2 59
55
51
Fgh_t5
47
Domestic air conditioner
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