LG Electronics AS-W096URH0/UBH0/UWH0/UMH0, AS-W126URH1/UBH1/UWH1/UMH1 Self-diagnosis function

Troubleshooting Guide

Self-diagnosis function

1. The malfunction indicator of indoor (see the operating LED of the INDOOR)

Error	The cause of malfunction	Malfunction indicator	The operating state
Code
1	Indoor TH. is short or open.	The operating LED will be blink-	Keep operating state.
		ing once.
2	Outdoor TH. is short or open.	The operating LED will be blink-	Keep operating state.
		ing twice.
4	Temp. of Heat sink is over 95°C.	The operating LED will be blink-	Restart compressor when Heat sink
	/Heat sink TH. is short or open.	ing 4 times.	Temp is 85°C below.
5	Comunication error (serial	The operating LED will be blink-	The operation is off(enable to restart
	comunication).	ing 5 times.	by remote controller).
6	DC peak error.	The operating LED will be blink-	Compressor will be turned off immediately.
		ing 6 times.	(not enable to restart by remote controller)
7	Running current is over-	The operating LED will be blink-	Compressor will be turned off immediately.
	loaded. (CT2)	ing 7 times.	(not enable to restart by remote controller)
8	Indoor fan lock error	The operating LED will be blink-	The operation is off(enable to restart
	(BLDC fan model)	ing 8 times.	by remote controller).
9	Outdoor fan lock error	The operating LED will be blink-	The operation is off(enable to restart
	(BLDC fan model)	ing 9 times.	by remote controller).
	D-PIPE TH is short or open.	The operating LED will be blink-	Compressor will be turned off immediately.
10			(restart compressor when D-PIPE TH. is
		ing 10 times.
			recovred)

❈Error code ➅, ➆ can’t be operated unless the power cord is removed.

2.The malfunction indicator of outdoor (see the LED01M on the outdoor PCB ass’y)

Error	The cause of malfunction	Malfunction indicator	The operating state
Code
2	Indoor TH. is short or open.	The LED01M will be blinking	Keep operating state.
		twice.
4	Temp. of Heat sink is over 95°C,	The LED01M will be blinking 4	Restart compressor when heat sink
	or Heat sink TH. is shortor open.	times.	Temp. is 85°C below.
5	Comunication error (serial	The LED01M will be blinking 5	The operation is off(enable to restart
	comunication).	times.	by remote controller).
6	DC peak error.	The LED01M will be blinking 6	Compressor will be turned off immediately.
		times.	(not enable to restart by remote controller)
7	Running current is over-	The LED01M will be blinking 7	Compressor will be turned off immediately.
	loaded.	times.	(not enable to restart by remote controller)
9	Outdoor fan lock error	The LED01M will be blinking 9	The operation is off(enable to restart
	(BLDC fan model)	times.	by remote controller).
	D-PIPE TH is short or open.	The LED01M will be blinking 10	Compressor will be turned off immediately.
10			(restart compressor when D-PIPE TH. is
		times.
			recovered)

Service Manual 67