Frequency Control When There Is Ct Over Current Protection; High Pressure Protection (Multi); Low Pressure Protection (Multi) - Haier Super Match Series Service Manual

3.2.8. Frequency control when there is CT over current protection

1.0 I
0.95I
0.93I
0.90I
0.88I
0.85I

3.2.9. High pressure protection (Multi)

When the input signal of pressure switch is high level:1, that shows there is no protection.
When the input signal of pressure switch is low level: 0 for 1 minute, that shows high pressure
protection works. At this time, compressor stops, outdoor will send the alarm signal. The alarm can be
resumable. If in 60 minutes, the failure occurs 3 times, the failure can be confirmed and send failure
code to indoor. Meanwhile, by controling the max. condensate temp. Tc (cooling) or TmAVE (heating),
please confirm as follow:
In nominal cooling/dry/heating mode, high pressure can be controlled by limiting the max. frequency.
69
℃
68℃
66℃
64℃
62℃
60℃

3.2.10. Low pressure protection (Multi)

(1) When compressor is running, if output signal of low pressure switch is low level: 0 for 1
minute continously, compressor will stop,outdoor alarms. The alarm can be resumable. If in 60
minutes, the failure occurs 3 times, the failure can be confirmed and send failure code to indoor.
(2) When compressor no running, if output signal of low pressure switch is low level: 0 for 30
seconds continously, alarm will occur.
Stop immediately, if abnormal stop 3 times in 1 hour, the
unit will stop and alarm.
Reduce FQY rapidly 2HZ/S
Reduce FQY rapidly 1HZ/S
Reduce FQY slowly 1HZ/10S
Remain FQY
Increase FQY slowly 1HZ/10S
Keep for 5 seconds, stop to alarm, after 3-minute standby, the
unit can restartup. In 60 minutes it occurs 3 times continously,
unit will stop to alarm and the failure can be resumed after being
electrified again.
Reduce FQY rapidly 2HZ/S
Reduce FQY rapidly 1HZ/S
Reduce FQY slowly 1HZ/10S
Remain FQY
Increase FQY slowly 1HZ/10S
125
Super Match