What does LG range error code F38 mean?

F38 means the main control board and induction inverter lost communication. Reset the circuit breaker. If the error persists, professional service is required to diagnose the boards or wiring.

F38

LG Range Error Code F38 — Main Board to Inverter Communication Error

Advanced Fix 30–60 minutes No tools needed

What this means

The F38 error code indicates a communication failure between the main control board and the induction inverter board. The inverter drives the induction burners, and this communication link is essential for coordinating power levels and safety monitoring. A loose connector, damaged wire harness, or failed board can cause this error.

Step-by-step fix

1 steps

Reset the range

Turn off the circuit breaker for 30 seconds, then restore power.

When to call a professional

This requires professional diagnosis to determine whether the wiring, inverter board, or main control board has failed.

Related error codes

F36

The induction burner transistor module has detected a fault.

Advanced Fix · 30–60 minutes

F42

The range has detected an abnormal supply voltage.

Moderate Repair · 10–30 minutes

Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.

Learn more about our sources

Parts you may need

Inverter Board

Part #Varies by model · $150–$350

If the inverter board has failed

Find Part

Links may earn us a commission at no extra cost to you. We only recommend parts relevant to this repair.

Quick Info

BrandLG

ApplianceOven / Range

Error CodeF38

DifficultyAdvanced Fix

Est. Time30–60 minutes