Function Of Thermistor - Daikin 2MKS40G2V1B Service Manual

Function of Thermistor

3. Function of Thermistor

A Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge pipe
Exchanger
Thermistor
2. In cooling operation, the outdoor heat exchanger thermistor is used for detecting
3. In cooling operation, the outdoor heat exchanger thermistor is used for high pressure
B Discharge 1. The discharge pipe thermistor is used for controlling discharge pipe temperature. If the
Pipe Thermistor
2. The discharge pipe thermistor is used for detecting disconnection of the discharge pipe
C Gas Pipe 1. In cooling operation, the gas pipe thermistor is used for gas pipe isothermal control. The
Thermistor
79
A
Four way valve
B
Compressor
temperature. The system sets the target discharge pipe temperature according to the
outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve
opening so that the target discharge pipe temperature can be obtained.
disconnection of the discharge pipe thermistor. When the discharge pipe temperature
becomes lower than the outdoor heat exchanger temperature, the discharge pipe thermistor
is judged as disconnected.
protection.
discharge pipe temperature (used in place of the inner temperature of the compressor) rises
abnormally, the operating frequency becomes lower or the operation halts.
thermistor.
system controls electronic expansion valve opening so that the gas pipe temperature in each
room becomes equal.
Expansion valve
EV
A
EV
B
C
Function and Control
SiBE12-816_D
E
D
(R7042)