SiBE01-503 Control SpecificationFunctions and Control 233. Control Specification3.1 Four Way Valve SwitchingOutline Current is conducted during heating operation, and current is not conducted during cooling ordefrosting. In order to eliminate the switching sound (as the four way valve coil switches fromON to OFF) when the heating is stopped, the delay switch of the four way valve is carried outafter the operation stopped.Detail The four way valve is switched 2 minutes after the compressor stops.3.2 3-Minutes StandbyProhibit to turn ON the compressor for 3 minutes after turning it off.(except when defrosting)3.3 Compressor Protection FunctionWhen the compressor turns ON, it keeps running at least 120 seconds.(except when defrosting)3.4 Fan OFF DelayThe fan stops 30 seconds after the compressor stops.(except when defrosting)3.5 Freeze-up Protection ControlOutline During cooling/dry operation, freeze-up protection control is activated according to thetemperature 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 minutesWhile controlling The compressor halts. The indoor fan rotates at L tap.Conditions for ending Temperature of the indoor heat exchanger ≥ 13°Cor The operation stops.
