Black & Decker MUZ-FD09NA Actuator Control, Outdoor FAN Motor Control, R.V. Coil Control

8 ACTUATOR CONTROL

MUZ-FD09NA

MUZ-FD12NA

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.

5 seconds 15 seconds

ON

Compressor

OFF

ON

Outdoor fan motor

OFF

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.

<COOL><HEAT>

		5 seconds			5 seconds
	ON
Compressor OFF
R.V.coil	ON
	OFF
Outdoor fan ON
motor	OFF
8-3. RELATION BETWEEN MAIN SENSOR AND ACTUATOR
Sensor		Purpose			Actuator
			Compressor	LEV	Outdoor		R.V. coil	Indoor fan
					fan motor			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	○	○		○

15