LG Electronics LF300CP(LP-C303R20), LF480CE(LP-C483TA0) service manual

The Units discontinue after the operation started

WHAT TROUBLED	COMPLAINTS	HOW TO CHECK	REMEDY
Other parts than the unit	Improper opening of the	Checking	Open it properly
	service valves in the
	refrigerant line
Outdoor coil	Coil is dirty *1	Checking	Wash it by means of
			something like chemical
			washing.
In-condensable gas	Air intruded into the	In the event that	Extract air by vacuum
blended.	refrigerant pipe line *1	difference between the	pump, then recharge the
		saturating temperature	refrigerant.
		corresponding to high
		pressure and the
		temperature of air
		discharged from the
		outdoor coil is more than
		15°C, incondensable gas
		may be blended.
High pressure switch	Improper adjustment	Check it with a pressure	Readjust it to normal
		gauge.	operating pressure.
			(Note)
			Don't alternate the
			specified adjusting
			pressure. If the adjusted
			pressure exceeds the
			specified range, it will
			cause a great accident.
Refrigerant	A shortage of refrigerant		Recharge the
	amount. * 2		refrigerant. Repair the
			spot where it leaks.
Outdoor Fan	Reverse rotation of fan	Confirm the wind blowing	If reversed, connect
	Obstacle	out.	interchanged wires to
	Air short circuit *1	Check it with eyes.	each terminal.
			Power wirings.

Note: Use an appropriate measuring instrument for readjustment. *1: Check the High-pressure switch indication.

*2: Check the Low- pressure switch indication.

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