25
LG 25 Error Code – System Voltage Abnormal
Air Conditioner · HIGH Severity
What This Error Means
Voltage to the system is too low or too high
Diagnostic & Repair Steps
1
Check Supply Voltage
Measure incoming AC voltage. Should be within 198–242V.
Measure incoming AC voltage. Should be within 198–242V.
TEST
~10 min
2
Monitor Voltage Stability
Check for fluctuations.
Check for fluctuations.
TEST
~15 min
3
Install Voltage Stabilizer
Recommend stabilizer if voltage unstable.
Recommend stabilizer if voltage unstable.
CHECK
~5 min
4
Check Power Wiring
Inspect all power connections. ⚠️ Disconnect power first
Inspect all power connections. ⚠️ Disconnect power first
INSPECT
~10 min
5
Refer to LG Service Manual
Visit www.lg-dfs.com for detailed troubleshooting.
Visit www.lg-dfs.com for detailed troubleshooting.
CHECK
~10 min
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