Actuator Control - Mitsubishi Electric MXZ-3C24NA Service Manual

9

ACTUATOR CONTROL

MXZ-3C24NA MXZ-3C30NA
MXZ-2C20NAHZ MXZ-3C24NAHZ MXZ-3C30NAHZ
Relation between main sensor and actuator
Sensor
Discharge temperature
thermistor
Indoor coil temperature
thermistor
Defrost thermistor
Fin temperature
thermistor
Ambient temperature
thermistor
Outdoor heat exchanger
temperature thermistor
Capacity code
OBH702A
MXZ-4C36NA
Purpose
Compressor
○
Protection
○
Cooling: Coil frost
prevention
○
Heating: High pres-
sure protection
○
Heating: Defrosting
○
Protection
○
Control/Protection
Heating: Defrosting
(Heater)
○
Cooling: Control/
Protection
○
Control
MXZ-5C42NA
Actuator
Outdoor
LEV 4-way valve
fan motor
○
○
○ ○ ○
○
○ ○
○ ○
○
56
2-way solenoid Defrost
valve heater
(MXZ-5C42VA
(MXZ-2C20NAHZ
MXZ-2C20NAHZ
MXZ-3C24NAHZ
MXZ-3C24NAHZ
MXZ-3C30NAHZ)
MXZ-3C30NAHZ)
○
○
○
○
○