Daikin R35CV1A - Function of Thermistor

Functions of Heat Pump Models Si01-406
38 Functions and Control
2.9 Function of Thermistor
2.9.1 Heat Pump Model
A Outdoor Heat
Exchanger
Thermistor (DCB)
1. The outdoor heat exchanger thermistor is used for high pressure protection during cooling
operation.
B Indoor Heat
Exchanger
Thermistor (DCN)
1. The indoor heat exchanger thermistor is used to prevent freezing.
During the cooling operation, if the temperature drops abnormally, the operating frequency
becomes lower, then the operation must be halted.
2. The indoor heat exchanger thermistor is used for anti-icing control.
During the cooling operation, if the heat exchanger temperature in the room where operation
is halted becomes –1°C, it is assumed as icing.
Four way valve
Compressor
(R3070)
A
B