Service manual

24
9
ACTUATOR CONTROL
MUZ-GA50VA -
MUZ-GA60VA -
MUZ-GA71VA -
E1
E1
E1
Relation between main sensor and actuator.
9-3. Relation between main sensor and actuator
9-2. 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
motor
R.V.coil
ON
OFF
ON
OFF
<COOL>
5 seconds
<HEAT>
5 seconds
ON or OFF
ON or OFF
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.
Discharge temperature thermistor
Indoor pipe temperature thermistor
Defrost thermistor
Fin temperature thermistor
Outdoor heat exchanger temperature
Ambient temperature thermistor
Purpose
Protection
Defrosting Protection
Defrosting
Protection
Protection
Protection
Compressor LEV
Outdoor
fan motor
4-way
valve
Sensor
Actuator
OB389 --1qxp 05.1.26 18:14 Page 24