Airwell HDD 009, Manual

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AN COMPANY
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Protections
IDU Coil Overheating protection (heating mode):
During heating operation, the signals being sent from the indoor unit
allows the operation of frequency limitation in order to prevent
abnormal high pressure
.
For Model 09/12: Compressor will stop when ICT reaches 65C
For Model 18/22, Compressor will stop when ICT reaches 62C
If the unit stops as such protection for 6 times, it can not resume
running automatically and displayed an error malfunction, it can
resume by pressing ON/OFF.
IDU Freezing Protection:
During cooling operation, the signals being sent from the indoor unit allow the
operating frequency limitation and then prevent freezing of the indoor heat exchanger.
Compressor will stop when ICT <= -1 for continuous of 3 min.
If the unit stops as such protection for 6 times, it can not resume running automatically
and display malfunction, it can resume by pressing ON/OFF.