Actuator Control - Mitsubishi Electric MXZ-3E54VA-E1 Service Manual

ACTUATOR CONTROL

9
MXZ-3E54VA MXZ-3E68VA MXZ-4E72VA
MXZ-4E83VA MXZ-5E102VA MXZ-2E53VAHZ MXZ-4E83VAHZ
Relation between main sensor and actuator
Sensor
Discharge temperature
thermistor
Indoor coil
temperature thermistor
Defrost thermistor
Fin temperature thermistor Protection
Ambient temperature
thermistor
Outdoor heat exchanger
temperature thermistor
Capacity code
1 MXZ-4E83VAHZ
2 MXZ-2E53VAHZ, 4E83VAHZ
OBH723D
Purpose
Protection
Cooling: Coil frost prevention
Heating: High pressure protection
Heating: Defrosting
Control/Protection
Heating: Defrosting (Heater)
Cooling: Control/Protection
Control
Compres- Outdoor
LEV
sor fan motor
82
Actuator
2-way
4-way
solenoid
valve
valve 1
Defrost
heater 2