Service manual
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7.3 Function
Remote receiving
Testing and forced running
Position set for indoor unit wind vane
LCD displaying and alarm
Timer On or off
Protection for the compressor
Current protection
High temperature protection of indoor heat exchanger at heating mode
Auto defrosting and heating recovery at heating mode
Anti cold air at heating mode
Anti frozen at cooling mode
Auto restart
Self-Clean
7.4 Protection
7.4.1 3 minutes delay at restart for compressor.
7.4.2 Sensor protection at open circuit and breaking disconnection
7.4.3 Fan Speed is out of control. When Indoor Fan Speed is too high(higher than High Fan+300RPM)or
too low(lower than 400RPM), the unit stops and LED displays failure information and can’t returns to
normal operation automatically.
7.4.4 Cross Zero signal error warning. If there is no Cross Zero signals in 4 minutes, the unit stops and
LED displays failure information and can’t returns to normal operation automatically.
7.4.5 The current protection of the compressor
If compressor turns off for continuously 4 times due to current protection in 5 minutes from Compressor
On, the unit stops and LCD displays failure information and can’t returns to normal operation
automatically.
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