Troubleshooting; Safety Caution; Error Mode Summary - LG WM2901H*A Series Service Manual

8. TROUBLESHOOTING

8-1. SAFETY CAUTION

There's built-in AC 120V and DC power in output terminal of PWB assembly in common. Be careful
electric shock when disconnecting parts while trouble shooting. (Wear Electro Static Discharge gloves
when working.)
After cutting off the power when changing PWB assembly, disconnect or assemble.
Be careful static when handling PWB assembly, and use Electro Static Discharge plastic pack when
delivering or keeping it.

8-2. ERROR MODE SUMMARY

If you press the START/PAUSE button when an error is displayed, any error except
disappear and the machine will go into the pause status.
In case of ,
errors, if the error is not resolved within 4 minutes, power will be turned off automatically and the error
code will blink. But in the case of
ERROR
WATER INLET
1
ERROR
UNBALANCE
2
ERROR
3 DRAIN ERROR
4 OVERFLOW ERROR
PRESSURE SENSOR
5
ERROR
6 DOOR OPEN ERROR
7
HEATING ERROR
, if the error is not resolved within 20 seconds, or the in case of other
, power will not be turned off.
SYMPTOM CAUSE
• Correct water level (24.6kHz) is not reached within
8 minutes after water is supplied or it does not reach
the preset water level within 20 minutes.
• The load is too small.
• The appliance is tilted.
• Laundry is gathered to one side.
• Non distributable things are put into the drum.
• Not fully drained within 10 minutes.
• Water is overflowing.
(water level frequency is over 21.3kHz).
If is displayed, the drain pump will
operate to drain the water automatically.
• The PRESSURE SENSOR ASSEMBLY is out of
order.
• When water level frequency maintain condition of
below 10 kHz and over 30 kHz.
• Door not all the way closed.
• Loose electrical connections at Door switch and
PWB Assembly.
• The DOOR SWITCH ASSEMBLY is out of order.
• The THERMISTOR is out of order.
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