Mitsubishi Electronics Trouble criterion of main parts MUZ-GB50VA, Red Blk Blk Wht, Wht Red

10-5. Trouble criterion of main parts MUZ-GB50VA

Part name		Check method and criterion				Figure
Defrost thermistor	Measure the resistance with a tester.
(RT61)
Ambient temperature	Refer to 10-7. “Test point diagram and voltage”,1. “Outdoor electronic
thermistor (RT65)	control P.C. board”, the chart of thermistor.
Outdoor heat exchanger
temperature thermistor
(RT68)
Discharge temperature	Measure the resistance with a tester.
thermistor (RT62)	Before measurement, hold the thermistor with your hands to warm it up.
Fin temperature	Refer to 10-7. “Test point diagram and voltage”,1. “Outdoor electronic
thermistor (RT64)	control P.C. board”, the chart of thermistor.
	Measure the resistance between terminals using a tester.
	(Winding temperature : -10°C ~ 40°C)					W
							RED
Compressor
			Normal
					V		U
		0.40" ~ 0.49"
					WHT		BLK
	Measure the resistance between lead wires using a tester.
	(Part temperature : -10°C ~ 40°C)
Outdoor fan motor		Color of lead wire		Normal			RED U (W)
							WHT
		RED - BLK
							V (V)
		BLK - WHT		13.4" ~ 16.4"			W (U)
							BLK
		WHT - RED

Measure the resistance using a tester. (Part temperature : -10°C ~ 40°C)

R. V. coil Normal

2.6k" ~ 3.3k"

Measure the resistance using a tester.(Part temperature : -10°C ~ 40°C)

			WHT
	Color of lead wire	Normal	RED	LEV
	WHT - RED
Linear expansion valve			ORN
	RED - ORN
		37.4" ~ 53.9"
	YLW - BRN
	BRN - BLU			YLW BRN BLU

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