SiBE01-503 Control Specification
Functions and Control 23
3. Control Specification
3.1 Four Way Valve Switching
Outline Current is conducted during heating operation, and current is not conducted during cooling or
defrosting. In order to eliminate the switching sound (as the four way valve coil switches from
ON to OFF) when the heating is stopped, the delay switch of the four way valve is carried out
after the operation stopped.
Detail The four way valve is switched 2 minutes after the compressor stops.
3.2 3-Minutes Standby
Prohibit to turn ON the compressor for 3 minutes after turning it off.
(except when defrosting)
3.3 Compressor Protection Function
When the compressor turns ON, it keeps running at least 120 seconds.
(except when defrosting)
3.4 Fan OFF Delay
The fan stops 30 seconds after the compressor stops.
(except when defrosting)
3.5 Freeze-up Protection Control
Outline During cooling/dry operation, freeze-up protection control is activated according to the
temperature of the indoor heat exchanger to prevent it freezing.
Detail Conditions for starting
Temperature of the indoor heat exchanger
≤
0
°
C
Compressor running time
≥
10 minutes
While controlling
The compressor halts.
The indoor fan rotates at L tap.
Conditions for ending
Temperature of the indoor heat exchanger
≥
13°C
or
The operation stops.
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