Daikin FTXN-LV, Руководство по устранению неисправностей, Страница: 7 / 54

TS13-01 Troubleshooting manual 7
THERMISTORS IN RXN-LV
FUNCTIONS OF THERMISTOR
Thermistor Functions
Discharge pipe
Used for discharge superheat (SH) & EXV control. Also used for crankcase
heater/ preheating control in Series 2 model.
Outdoor coil
Used for defrost control. Also used for inverter current protection control in
Series II.
Outdoor air
Used for defrost & outdoor fan speed control. Also used for PMV, overall
current protection & preheating operation control.
Heat sink Used for capturing heat sink temperature.
Suction pipe Used for EXV (SH) & suction pipe SH protection control in heating.
Gas pipe Used for gas pipe isothermal control in cooling. EXV opening is controlled so
that accurate cooling capacity is achieved in each room.
Liquid pipe 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.