F7 Moderate Moderate DIY

LG Oven F7 — Upper convection fan error

LG Oven · Error code F7

What F7 Means

The control cannot detect the upper convection fan running for more than one minute during a convection cycle. The fan tach feedback is missing or the fan is mechanically locked.

Symptoms

  • F7 or F-7 on display
  • Convection bake/roast cancels
  • Audible scraping or no fan sound from rear of cavity
  • Standard bake may still work

Common Causes

1
Seized or failed convection fan motor

Worn bearings or burned winding — motor will not spin or draws no current.

2
Loose fan blade hitting the shroud

Hub set screw backed off and the blade is binding.

3
Wiring or connector failure to the fan

Harness in the back wall opened from heat cycling.

4
Failed fan relay on the main control board

Board commands the fan on but the relay never closes.

How to Fix It

  1. Press CLEAR/OFF and try a non-convection bake to confirm bake itself is OK.
  2. Power down at the breaker.
  3. Remove the rear convection cover inside the cavity and spin the fan by hand — it should turn freely with no scrape.
  4. Tighten the blade hub if it is loose; replace the blade if it is bent.
  5. Pull the rear access panel and check the fan motor connector. Measure motor winding resistance against the service-manual spec.
  6. Replace the convection fan motor if it is open or seized.
  7. If the motor and wiring check out, replace the main control board.

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement LG convection fan motor View on Amazon→ Common replacement LG convection fan blade View on Amazon→

More LG Oven Codes

5b 5b — Sabbath Mode active (not a fault) CF1 CF1 — Left-front cooktop sensor open/short CF2 CF2 — Left-rear cooktop sensor open/short CF3 CF3 — Right-front cooktop sensor open/short CF4 CF4 — Right-rear cooktop sensor open/short F1 Range F1 — Upper Oven Thermistor Error

All LG codes → All oven codes →

Verified against manufacturer documentation: lg.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.