Service manual
25
11.3.4 The current protection of the compressor
If compressor turns off for continuously 4 times due to current protection in 10 minutes from Compressor
On, the unit stops and LED displays failure information and can’t returns to normal operation automatically.
11.3.5 The protection of outdoor unit
The protection of outdoor unit mostly contains: the protection of exhausting temperature, the protection of
exhausting press etc. when any of the protection occur, the outdoor unit exports a signal to indoor unit.
The action of indoor unit: when the indoor unit infers a high-tension signal from outdoor exceeding 3
seconds, the whole unit turns off, come to checking condition, the indoor unit shows the information of
malfunction.(4-way valve turns off 2 minutes after the compressor.
When the indoor unit infers a low-tension signal from outdoor exceeding 3 seconds, the protection remove,
and the unit go right to work.
11.4 Fan-only mode
Fan speed is high/mid/low/ Auto
11.5 Cooling mode
The 4-way valve is closed at cooling mode.
The action of the compressor and the outdoor fan:(T=indoor temperature)
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