What 33 Means
A 33 code points to a fault with the compressor relay, per LG's error-code list. LG states there is no troubleshooting available for this code and that the unit will need repair service.
Common Causes of 33
- Compressor relay has failed
- Wiring to the relay is damaged or disconnected
🔧 One Safe Check You Can Try
There's no safe home step for this one; the compressor relay is inside the mechanical compartment near line-voltage wiring, and LG itself offers no owner troubleshooting path.
⚠ Why You Shouldn't Go Further Than That
- A failed compressor relay sits in the same high-voltage area as the compressor start components; testing or replacing it on a plugged-in appliance is a genuine shock hazard.
- Leaving a compressor relay fault unaddressed can mean the compressor cycles incorrectly or not at all, risking food loss the longer it runs unrepaired.
- LG's own documentation gives no DIY path here, which is a strong signal this is compressor-adjacent electrical work, not a filter or fan check.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.