TS13-01 Troubleshooting manual 7
THERMISTORS IN RXN-LV
FUNCTIONS OF THERMISTOR
Used for discharge superheat (SH) & EXV control. Also used for crankcase
heater/ preheating control in Series 2 model.
Used for defrost control. Also used for inverter current protection control in
Series II.
Used for defrost & outdoor fan speed control. Also used for PMV, overall
current protection & preheating operation control.
Used for capturing heat sink temperature.
Used for EXV (SH) & suction pipe SH protection control in heating.
Used for gas pipe isothermal control in cooling. EXV opening is controlled so
that accurate cooling capacity is achieved in each room.
Used for sub-cooling control in heating. Actual sub-cooling will be calculated
with liquid pipe & max. heat exchanger temperature among all rooms. EXV
opening is then adjusted to reach the target sub-cooling.
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