Error No. 04 - LG Multi V5 Service Manual

ERROR CODES

Error No. 04

Please refer to the Safety Precautions on pages 4-7 for more detail to prevent injury or death regarding the operation and service
WARNING
troubleshooting of the Multi V product.
Error No. Description
Indoor unit drain
04
overflow error.
Is the drain pan filled half-
way with water? (Float is halfway
up to the float switch.)
Yes
Is the drain pump
operating? (Sound / drain noise /
contact / etc.)
Yes
Is the drain pump clogged?
Yes
Remove any debris and clean the pump.
* If the float rises higher than half its
height, then the circuit opens and the
unit automatically stops.
138
Details
Drain pump and / or float switch could be
malfunctioning. Also check if the drain line is
obstructed.
No
Is the float switch
resistance short when
measured?
Yes
Replace the indoor unit PCB or reconnect the
connector.
No
For the indoor unit
PCB, does the voltage have
the correct output?
Yes
Replace the drain pump.
No
Check the height and slope of the
drain head.
Due to our policy of continuous product innovation, some specifications may change without notification.
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Causes
1. Drain pump / float switch error.
2. Improper drain pipe location, clogged drain
pipe.
3. Indoor unit PCB error.
No
Replace the float switch.
No
Replace the indoor unit PCB.
Images here are representative
of system components. Actual
component appearance depends
on model and system type.