Specifications

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)