20
MUZ-DM25VA MUZ-DM35VA
9-2. R.V. COIL CONTROL
R.V. COIL CONTROL
Heating . . . . . . . . . . . . . . . . . OFF
Cooling . . . . . . . . . . . . . . . . . ON
Dry . . . . . . . . . . . . . . . . . . . . ON
NOTE:
The 4-way valve reverses for 5 seconds right before start-up of the compressor.
ON
OFF
ON
OFF
Outdoor fan
motor
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.
9-3. RELATION BETWEEN MAIN SENSOR AND ACTUATOR
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
Cooling: High pressure protection
○
○
○
Heating: Defrosting
○
○
○
○
○
Fin temperature thermistor
Protection
○
○
9
ACTUATOR CONTROL
OBH751
