LG Ovens & Ranges

Error Code F7

Convection fan motor open — convection fan fails to operate for 1 cumulative minute during a convection cooking cycle

Moderate

Address soon - your appliance may not work properly

Also displayed as: F7

How to Fix

  1. 1

    Unplug the unit.

  2. 2

    Check all connectors and harnesses associated with the convection fan motor — reconnect or fix any loose/disconnected wiring.

  3. 3

    Disconnect the convection fan motor connector. Measure resistance of the fan motor windings at room temperature: Fan High winding = approximately 25Ω ±10%; Fan Low winding = approximately 30Ω ±10%. If infinite (open) or below 5Ω (shorted), replace the fan motor.

  4. 4

    With unit unplugged, measure resistance of fan motor relays on Main PCB: RY61 (Fan High) — check 1st pin of CN62 and cathode of D503; RY62 (Fan Low) — check 3rd pin of CN62 and cathode of D503. Normal is infinite (de-energized); if shorted, replace the Main PCB.

  5. 5

    Plug in the unit. If fan motor and wiring are normal but F7 persists, replace the Main PCB.

This Error Applies To

LG LRG4115ST Series Ovens & Ranges

Service manual exact match: LRG4115ST

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