Mitsubishi SUZ-A09VR - Actuator Control; Outdoor Fan Motor Control

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ACTUATOR CONTROL
10
SUZ-A09VR.TH SUZ-A12VR.TH SUZ-A18VR.TH SUZ-A24VR.TH
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
Compressor LEV
Outdoor
fan motor
Indoor
fan motor
RV-coil
Sensor
Actuator
Discharge temperature thermistor
Indoor pipe temperature thermistor
Defrost thermistor
Fin temperature thermistor
Outdoor heat exchanger temperature
Purpose
Protection
Cooling : Coil frost prevention
Heating : High pressure protection
Heating : Defrosting
Protection
Cooling : High pressure protection
Compressor LEV
Outdoor
fan motor
4-way
valve
Sensor
Actuator
10-3. Relation between main sensor and actuator
10-2. R.V. coil control
Heating
. . . . . . . . . . . . . . . .
ON
Cooling. . . . . . . . . . . . . . . . . OFF
Dry
. . . . . . . . . . . . . . . . . . . .
OFF
NOTE: The 4-way valve reverses for 5 seconds right before start-up of the compressor.
ON
OFF
ON
OFF
Outdoor fan
Compressor
5 seconds 15 seconds
ON
OFF
Compressor
Outdoor fan
R.V.coil
ON
OFF
ON
OFF
<COOL>
5 seconds
<HEAT>
5 seconds
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-A09VR.TH SUZ-A12VR.TH
SUZ-A18VR.TH SUZ-A24VR.TH
OC304A --2qxp 04.6.29 8:33 AM Page 41