LG aircon 14 error code
Use this LG 14 error code guide to decide when to stop resetting, what to capture, and what to check before parts are quoted. Cross-check the exact model because the row is unofficial.
What does LG 14 mean?
LG 14 is listed as rAC product = compressor phase current error in the loaded residential diagnostic rows. The loaded row is unofficial, so do not approve parts from this code alone. Confirm the exact model, series, or signal row before accepting a parts quote.
Compressor start, lock, overcurrent, overload, or inverter-drive protection.
Power-module, IPM, voltage, or wiring fault affecting compressor drive.
Compressor mechanical or winding issue after electrical checks are confirmed.
What to do now
Use these steps before another reset or parts quote.
Stop using the unit if 14 returns
Stop repeated restarts if 14 returns; compressor and inverter faults can become more expensive when forced to run.
Reset 14 once
Capture the 14 display, then reset once only if there is no burning smell, repeated trip, or hot outdoor unit.
Send these to us
14 error code, a clear display photo, LG model stickers, affected rooms, reset result, trip timing and outdoor-unit behaviour, and exact model so the source can be cross-checked
Source-specific guidance
These diagnostic-reference notes help match the code to the exact model. Electrical, refrigerant, wiring, resistance, and component checks are technician work, not DIY steps.
| Source detail | What it says |
|---|---|
| Source repair action | RAC product = compressor phase current error. |
| Singapore / model note | Unattributed LG fault-code list; confirm against the installed model/service manual before applying. |
What to check before repair
Use this split to separate safe evidence capture from the tests a technician should prove before quoting parts.
| You can check | Technician should confirm |
|---|---|
| Before resetting 14, take a clear display photo. | Confirm whether 14 is compressor start, overload, lock, or drive protection. |
| Capture the LG indoor and outdoor model stickers so the correct family row is used. | Check supply voltage, inverter output, IPM status, compressor current, and winding readings. |
| Treat the code as a starting point and note the exact symptoms because this row is not brand-official yet. | Review trip history and compressor mechanical signs before quoting replacement. |
What changes the next step
These clues decide whether the first check is room-side, shared outdoor-side, refrigerant-side, source-table, or model-family confirmation.
| What you see | What it points to |
|---|---|
| Only one indoor unit shows 14. | The affected room, indoor board path, wiring route, or local component should be checked first. |
| Several rooms or the outdoor unit show the same 14 fault. | The shared outdoor side, power path, communication trunk, or refrigerant circuit needs priority checking. |
| The outdoor unit hums, starts briefly, or trips soon after startup. | Power, inverter, IPM, compressor current, and winding checks decide the repair path. |
| The model family is different from the row you found online. | Use the model or series filter first; same-looking codes can still belong to different diagnostic tables. |
| The model belongs to the loaded residential diagnostic rows. | The loaded row is unofficial, so do not approve parts from this code alone. Use the matching source row before quoting parts. |
Compressor drive or replacement decision
LG 14 can still be a repair if power, inverter, or module checks find the cause. Compressor replacement should be weighed against age, warranty, and the rest of the system condition.
Inverter or IPM faults are not the same as confirmed compressor mechanical failure.
Compressor winding and current readings should be measured before replacement is discussed.
Older systems need a repair-versus-replace check if compressor-side parts are expensive.
LG 14 questions
What does the LG 14 error mean?
Can I fix a LG 14 error myself?
Is it safe to keep running the aircon with a 14 error?
What causes a LG 14 error?
Will a LG 14 error need a repair or a full replacement?
What should I send a technician about a LG 14 error?
Confirm the fault
Share the error code, model number and symptoms so we can assess the likely cause.
Not the right code?
Browse the full LG list or check a few codes in the same fault category.
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Read next
Use these if the quote mentions the parts, checks, or repair path this code points to.