Mitsubishi Electronics PUY-A36NHA2-BS Function of SWITCHES, Connectors and Jumpers, Off

10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS

(1) Function of switches

Type		No.	Function								Action by the switch operation																							Effective timing
of	Switch
											ON															OFF
switch
		1	Forced defrost w1								Start														Normal									When compressor is working
																																		in heating operation. w1
		2	Abnormal history clear								Clear														Normal									Off or operating
				ON								ON							ON								ON
		3
					1	2	3	4	5		6		1	2	3	4	5	6		1	2	3	4	5	6			1	2	3	4	5	6
							0								1							2								3
				ON								ON							ON								ON
	SW1	4
Dip					1	2	3	4	5		6	1	2	3	4	5	6	1	2	3	4	5	6		1	2	3	4	5	6
			Refrigerant address				4								5							6								7
switch																																		When power supply ON
				ON								ON							ON								ON
			setting
		5
				1		2	3 4		5	6		1		2	3 4		5	6	1		2	3 4		5	6		1		2	3 4		5	6
							8								9							10								11
				ON								ON							ON								ON
		6
				1		2	3 4		5	6		1		2	3 4		5	6	1		2	3 4		5	6		1		2	3 4		5	6
							12								13							14								15
	SW4	1	Test run					Operating																	OFF									Under suspension
		2	Test run mode setting						Heating															Cooling
		1	No function								—														—									—
	SW8	2	No function								—															—								—
		3	Separate indoor/outdoor							Used														Not used										When power supply ON
			unit power supplies
Push	SWP		Pump down								Start													Normal										Under suspension
switch

w1 Forced defrost should be done as follows.

1Change the DIP SW1-1 on the outdoor controller board from OFF to ON.

2Forced defrost will start by the above operation 1 if all these conditions written below are satisfied.

·Heat mode setting

·10 minutes have passed since compressor started operating or previous forced defrost finished.

·Pipe temperature is less than or equal to 8ºC[46ºF].

Forced defrost will finish if certain conditions are satisfied.

Forced defrost can be done if above conditions are satisfied when DIP SW1-1 is changed from OFF to ON.

After DIP SW1-1 is changed from OFF to ON, there is no problem if DIP SW1-1 is left ON or changed to OFF again. This depends on the service conditions.

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