23
LG 23 Error Code – DC Link Voltage Too Low
Air Conditioner · HIGH Severity
What This Error Means
DC link voltage is too low
Diagnostic & Repair Steps
1
Check Supply Voltage
Measure DC link voltage. Low voltage indicates supply or capacitor issue.
Measure DC link voltage. Low voltage indicates supply or capacitor issue.
TEST
~10 min
2
Check Power Supply Input
Verify AC supply voltage is within spec.
Verify AC supply voltage is within spec.
TEST
~10 min
3
Inspect Outdoor PCB
Check capacitors and rectifier circuit. ⚠️ Disconnect and wait 10 min
Check capacitors and rectifier circuit. ⚠️ Disconnect and wait 10 min
INSPECT
~15 min
4
Replace Outdoor PCB
If DC link circuit faulty.
If DC link circuit faulty.
REPLACE
~30 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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