LG Refrigerator 22 — What It Means & How to Fix It
Code 22 on LG refrigerators is the compressor-start (relay) error: the board expected the compressor to start and it didn't, so the fridge can't cool.
What this code means
The '22' code is LG's compressor relay error: the inverter board commands the compressor to start and gets no confirmation — the relay or the start circuit at the compressor isn't completing. Refrigerators on this code usually aren't cooling at all, because a compressor that won't start doesn't move refrigerant. The suspects are a failed start relay, a struggling compressor winding, or the inverter driver board on these electronically controlled units.
LG lists 22 as a compressor relay / start fault on inverter refrigerators. It can arrive on its own or after a stream of other codes, and anything near the compressor and its driver carries mains voltage — which is why the button-line here is short. The model number is on the left wall of the fresh-food section.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Failed compressor start relay | Common | No — technician job |
| Compressor winding or seal failure | Common | No — technician job |
| Inverter driver board failing to start the rotor | Occasional | No — technician job |
| Harness between board and compressor damaged | Less common | No — technician job |
What you can try yourself
- Unplug the refrigerator for five minutes and restart once. This handles the occasional false flag — and it's the only safe DIY move for a compressor code.
- If 22 returns, keep the doors closed and check food with a thermometer so you know what needs saving while you arrange service.
- Do not tap, rock or 'bump' the compressor to coax it — a stalled rotor run can overheat the sealed system and turn a repair into a replacement.
- Book a technician: they'll meter the relay and windings on the compressor terminals and test the inverter drive before replacing anything.
When to call a technician
- 22 returns after the one reset — compressor-start work is a technician's, full stop.
- A hum or click at startup that immediately dies, with neither compartment cooling.
- The compressor housing is hot to the touch or the breaker trips.
Typical professional repair cost: Relay or inverter-driver repairs typically run $200–$450; compressor replacement is the heavy end at $400–$900 including labor.
Frequently asked questions
What does the compressor relay do?
It's the switch that actually energizes the compressor start winding. After years of clicking in and out it can wear, crack, or fail electrically — and a compressor that never gets its start pulse simply won't run, producing exactly this code.
Is code 22 the same as a dead compressor?
Close — it means the compressor isn't starting, but the cause can be a $20 relay on top of a healthy compressor, or a dying compressor behind a healthy relay. The technician's meter sorts that out before any expensive decision.
How much food will I lose waiting for a technician?
A sealed fridge holds cold for 12–24 hours if you keep the doors shut, so a same-day booking usually saves the contents. Move temperature-sensitive items to another fridge as a hedge.
Sources checked
Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.
Related LG codes
- LG Refrigerator Er FF Er FF is LG's freezer evaporator fan fault: the fan that moves cold air through the freezer isn't turning — usually jammed by frost after a defrost, and an unplug-and-thaw reset fixes many cases.
- LG Refrigerator Er rF Er rF is LG's fresh-food evaporator fan fault: the fan serving the refrigerator section isn't turning, so the fridge compartment runs warm even when the freezer stays cold.
- LG Refrigerator dS dS is LG's defrost sensor fault: the sensor on the freezer evaporator reads open or shorted, so the board can't run defrost timing correctly and frost builds over time.
- LG Refrigerator dH dH is LG's defrost-heater timeout: the defrost cycle ran past its limit (about an hour) without the evaporator thawing, so the heater or the sensor reading it is at fault.
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