18
ACTUATOR CONTROL
9
SUZ-KA25VA3.TH SUZ-KA35VA3.TH SUZ-KA50VA3.TH
SUZ-KA60VA3.TH
SUZ-KA71VA3.TH
9-3. RELATION BETWEEN MAIN SENSOR AND ACTUATOR
9-2. 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
9-1. 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.
NOTE
: The 4-way valve reverses for 5 seconds
right before start-up of the compressor.
Sensor
Purpose
Actuator
Compressor
LEV
Outdoor fan
motor
R.V.coil
Indoor fan
motor
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
○
○
○
Outdoor heat exchanger
temperature thermistor
Cooling: Low ambient temperature operation
○
○
○
Cooling: High pressure protection
○
○
○
OCH530
