Function Of Thermistor - Daikin 2MXS40H2V1B Service Manual

Function of Thermistor

3. Function of Thermistor

(1)
Four way valve
(2)
Compressor
(1) 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
(2) 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
(3) Gas Pipe In cooling operation, the gas pipe thermistor is used for gas pipe isothermal control. The system
controls outdoor electronic expansion valve opening so that the gas pipe temperature in each
Thermistor
room becomes equal.
89
Outdoor electronic
(5)
expansion valve
EV
A
EV
B
temperature. The system sets the target discharge pipe temperature according to the
outdoor and indoor heat exchanger temperature, and controls outdoor 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 drops
below the outdoor heat exchanger temperature by more than a certain value, 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.
(4)
(3)
SiBE121123_A
In case of FVXG model
Indoor electronic
expansion valve
(6) φ 4
(Motor operated
valve)
Radiant panel
(6) φ 6
Function and Control
(4)
(R15406)