MITSUBISHI ELECTRIC MUZ-FD09NA- U1 - Manual (Page 15)

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8 ACTUATOR CONTROL
MUZ-FD09NA MUZ-FD12NA
8-2. 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
motor
Compressor
5 seconds 15 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.
8-3. 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
○ ○
Outdoor heat exchanger temperature thermistor High pressure protection
○ ○ ○
Ambient temperature thermistor Low ambient temperature operation
○ ○ ○
ON
OFF
Compressor
Outdoor fan
motor
R.V.coil
ON
OFF
ON
OFF
5 seconds 5 seconds