LG Electronics GR-P257/L257 Faults, Power, Compressor, Problems Causes Checks Measures Remarks

2. Faults

2-1. Power

	Problems	Causes			Checks		Measures	Remarks
	No power on	- Power cord cut.	- Check the voltage with tester.				-Replace the components.
	outlet.	- Faulty connector insertion.	- Check visually.				-Reconnect the connecting parts.
		- Faulty connection between plug	- Check visually.				- Reconnect the connecting parts.
		and adapter.
	Fuse blows out.	- Short circuit by wrong connection.	- Check the fuse with tester				- Find and remove the cause of	- Replace with rated
		- Low voltage products are	or visually.				problem(ex. short, high voltage,	fuse after confirming
		connected to high voltage.	- Check the input volt are with tester				low voltage).	its specification.
		- Short circuit by insects.	(between power cord and products).				- Replace with rated fuse.
		- Electricity leakage.	- Check the resistance of power cord					■ If fuse blowns out
		- High voltage.	with testerf (if it is 0Ω, it is shorted).					frequently, reconfirm
		- Short circuit of components						the cause and prevent.
-		(tracking due to moisture and dust
55 -		penetration).
2-2. Compressor
	Problems	Causes			Checks		Measures	Remarks
	Compressor	- Faulty PTC.	- Check the resistance.				- If resistance is infinite, replace it
	does not		Vlaue:∞ is defective.				with new one.
	operate.						- If it is not infinite, it is normal.
							- Check other parts.
		- Compressor is frozen.	- If compressor assembly parts are				- During forced operation:
			normal(capacitor, PTC, OLP),				- Operates: Check other parts.
			apply power directly to the				- Not operate: Replace the frozen
			compressor to force operation.				compressor with new one, weld,
						Auxiliary winding	evacuate, and recharge refrigerant.
						Main winding
						Power
			OLP	It starts as soon as it is			• Refer to weld repair procedures.
				contacted.

TROUBLE DIAGNOSIS