Service Manual

76
ACTUATOR CONTROL
9
MXZ-2C20NA2 MXZ-3C24NA MXZ-3C30NA MXZ-4C36NA
MXZ-5C42NA MXZ-2C20NAHZ MXZ-3C24NAHZ MXZ-3C30NAHZ
MXZ-3C24NA2 MXZ-3C30NA2 MXZ-4C36NA2 MXZ-5C42NA2
MXZ-2C20NAHZ2 MXZ-3C24NAHZ2 MXZ-3C30NAHZ2
Relation between main sensor and actuator
Sensor Purpose
Actuator
Compressor LEV
Outdoor
fan motor
4-way valve
2-way solenoid
valve
Defrost
heater
(MXZ-5C42NA
MXZ-2C20NAHZ
MXZ-3C24NAHZ
MXZ-3C30NAHZ
MXZ-5C42NA2
MXZ-2C20NAHZ2
MXZ-3C24NAHZ2
MXZ-3C30NAHZ2)
(MXZ-2C20NAHZ
MXZ-3C24NAHZ
MXZ-3C30NAHZ
MXZ-2C20NAHZ2
MXZ-3C24NAHZ2
MXZ-3C30NAHZ2)
Discharge temperature
thermistor
Protection
○○ ○
Indoor coil temperature
thermistor
Cooling: Coil frost
prevention
○○
Heating: High pres-
sure protection
○○
Defrost thermistor Heating: Defrosting
○○○○
Fin temperature
thermistor
Protection
○○
Ambient temperature
thermistor
Control/Protection
○○○ ○
Heating: Defrosting
(Heater)
○
Outdoor heat exchanger
temperature thermistor
Cooling: Control/
Protection
○○○ ○
Capacity code Control
○○
OBH702F