LG Electronics General Wall Mounted-Inverter Type manual Troubleshooting CH21, CH22

				Part 4 Trouble Shooting
4) Troubleshooting CH21, CH22
Error	Title	Cause of error		Check point & Normal condition
code
				Malfunction of compressor
21	Max. C/T	Over current (14A	)	Blocking of pipe
				Low voltage input
				Refrigerant, pipe length, blocked, …
	C/T			Malfunction of current detection circuit.
22		Initial current error		(Open / Short)
	Internal circuit
				The voltage of “C01N” is 4.0VDC(25A) .

V

Check Point

1.Check the power source.

2.Check the fan operation is right.

3.Check the current.

4.Check the install condition.

5.Check the internal circuit. (C/T, Diode, Resistor)

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Service Manual 59