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Error code · Range

LG Range Codes F45, F46: Fan Not Running

On LG electric and gas ranges with a numeric F-code display, F45 and F46 are each listed as a fan error. The control expects a fan to turn when the oven runs, and F45 or F46…

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Code
F45, F46
Appliance
Range
Brand
LG
Warranty
30-day workmanship

What F45, F46 means

On LG electric and gas ranges with a numeric F-code display, F45 and F46 are each listed as a fan error. The control expects a fan to turn when the oven runs, and F45 or F46 means it does not see that. The oven may stop a function and show the code. The list does not say which fan each number belongs to, so we do not guess from the display alone.

Common causes of F45, F46

  • A fan that is not turning
  • A fan motor connection that is loose
  • A fan that is blocked or rubbing
  • A board output that does not power the fan
✓ One safe check you can try

1. Switch the circuit breaker off for 30 seconds, then back on. 2. Let the range cool before looking near any vent or opening. 3. Try the function again. If F45 or F46 returns, call us. 4. Do not open any vent panels to inspect the fan yourself.

! Why to stop there
  • The two numbers share one label, so we test each fan circuit to see which one the code refers to.
  • We check the fan wiring and the board output before replacing a motor.
Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.
→Same appliance

Other Range codes

F17LG Range Code F17: Convection Fan Sb, 5bLG Range Sb or 5b: Sabbath Mode Is On F19LG Range Code F19: Oven Not Heating F20LG Range Code F20: Lower Oven Door Lock F21, F22, F24, F25LG Range Codes F21, F22, F24, F25: Steam Sensors F27LG Range Code F27: Cooling Fan During Self Clean F3LG Range Code F3: Touch Pad Keys F36LG Range Code F36: Transistor
F45, F46F45, F46 questions
Are F45 and F46 the same?

Each is listed as a fan error. We test to find which fan each number points to on your range. We find out which fan each number means by testing.

Is it safe to run the oven?

Not with a fan code showing. A fan that does not run can let heat build in the wrong place. An oven that runs without its fan can overheat the control area, so we advise waiting.

Will a reset fix a fan error?

If it was a one-time stop, yes. If F45 or F46 comes back, the fan circuit needs a test. If the code returns, we test the fan circuit.

Book a visit

Still seeing F45, F46?

A technician diagnoses it on site and gives you the price in writing before any work starts.

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