Mitsubishi SUZ-KA35VA - Actuator Control; Outdoor Fan Motor Control; R.V. Coil Control; Sensor to Actuator Relation

5757
ACTUATOR CONTROL
10
SUZ-KA25VA(H) SUZ-KA35VA(H) SUZ-KA50VA SUZ-KA60VA SUZ-KA71VA
Discharge temperature thermistor
Indoor pipe temperature thermistor
Defrost thermistor
Fin temperature thermistor
Ambient temperature thermistor
Purpose
Protection
Cooling: Coil frost prevention
Heating: High pressure protection
Cooling: High pressure protection
Heating: Defrosting
Protection
Cooling: Low ambient temperature operation
Heating: Defrosting (Heater)
Compressor LEV
Outdoor
fan motor
Indoor
fan motor
Defrost
heater
RV-coil
Sensor
Actuator
10-3. Relation between main sensor and actuator
SUZ-KA25VA(H).TH SUZ-KA35VA(H).TH
10-2. R.V. coil control
Heating
. . . . . . . . . . . . . . . . .
ON
Cooling . . . . . . . . . . . . . . . . . OFF
Dry
. . . . . . . . . . . . . . . . . . . .
OFF
ON
OFF
ON
OFF
Outdoor fan
Compressor
5 seconds 15 seconds
ON
OFF
Compressor
Outdoor fan
motor
R.V.coil
ON
OFF
ON
OFF
<COOL>
5 seconds
<HEAT>
5 seconds
ON or OFF
ON or OFF
10-1. Outdoor fan motor control
The fan motor turns ON/OFF, interlocking with the compressor.
[ON] The fan motor turns ON 5 seconds before the compressor starts up.
[OFF] The fan motor turns OFF 15 seconds after the compressor has stopped running.
SUZ-KA25VA(H)R1.TH SUZ-KA35VA(H)R1.TH
esopruProsneS
Actuator
Compressor LEV
Outdoor fan
motor
R.V.coil
Indoor fan
motor
Defrost
heater
Discharge temperature
thermistor
Protection
Indoor coil temperature
thermistor
Cooling: Coil frost prevention
Heating: High pressure protection
Defrost thermistor Heating: Defrosting
Fin temperature thermistor Protection
Ambient temperature
thermistor
Cooling: Low ambient temperature operation
Heating: Defrosting (Heater)
Outdoor heat exchanger
temperature thermistor
Cooling: Low ambient temperature operation
Cooling: High pressure protection
NOTE: The 4-way valve reverses for 5 seconds right before
start-up of the compressor.
OC322G