ErrorCodeDoctor
LG · Range (Electric)

LG Range (Electric) F38 error code

Difficulty: Hard · Cost: $100–$350 · Duration: 5m

The F38 error means your LG range detected a communication failure between the main control board and the inverter. The inverter controls power delivery to the induction burners and needs to communicate constantly with the main board to regulate cooking performance. When this communication breaks down the range cannot control the induction burners correctly and stops the function. A circuit breaker reset clears it in some cases but if F38 keeps returning the wiring or control boards will need to be inspected by a technician.

Common causes

  • Communication fault between the main control board and the inverter
  • Wiring harness between the main board and inverter is loose or damaged
  • Main control board or inverter board has malfunctioned
  • Temporary electronic glitch causing a false communication error

How to fix it

  1. 1

    Turn off the circuit breaker for the range and wait 30 seconds

  2. 2

    Turn the circuit breaker back on and check if the error has cleared

  3. 3

    If F38 persists after resetting the main board and inverter wiring needs inspection by a qualified technician

Related LG Range (Electric) error codes

1

HS

The cooktop surface temperature is above 150°F — too hot to touch

easy
2

H5

The cooktop surface temperature is above 150°F — too hot to touch

easy
3

PF

Power to the range was interrupted

easy
4

Sb

Sabbath mode is active — temperature control, timer, light, and alarm functions are disabled

easy

F38 error — frequently asked questions

What does the F38 error mean on a LG range (electric)?

A communication error was detected between the main board and the inverter

What causes the F38 error?

The F38 error is usually caused by: Communication fault between the main control board and the inverter; Wiring harness between the main board and inverter is loose or damaged; Main control board or inverter board has malfunctioned; Temporary electronic glitch causing a false communication error.

Can I fix the F38 error myself?

This is rated a hard fix — it often requires tools, parts, or experience, and may be safer left to a professional technician.

How much does it cost to fix the F38 error?

Fixing the F38 error on a LG range (electric) typically costs $100–$350, depending on parts and whether you do it yourself or hire a technician.

Is it safe to keep using my range (electric) with the F38 error?

We'd recommend addressing the F38 error before continuing to use the range (electric), since hard-rated issues often involve a real fault rather than a minor glitch.