Mitsubishi Electric SUZ-KA25VA6.TH, Technical & Service Manual

Page: 16 / 44

16
TCH004
ACTUATOR CONTROL
8
8-3. RELATION BETWEEN MAIN SENSOR AND ACTUATOR
8-2. 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
8-1. 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
○ ○ ○
SUZ-KA25VA6.TH SUZ-KA35VA6.TH SUZ-KA50VA6.TH
SUZ-KA25VA6.TH-ER SUZ-KA35VA6.TH-ER SUZ-KA50VA6.TH-ER
SUZ-KA25VA6.TH-ET SUZ-KA35VA6.TH-ET SUZ-KA50VA6.TH-ET
SUZ-KA60VA6.TH SUZ-KA71VA6.TH
SUZ-KA60VA6.TH-ER SUZ-KA71VA6.TH-ER
SUZ-KA60VA6.TH-ET SUZ-KA71VA6.TH-ET