On the covered LG range or oven, F7, F17, F46 means an Upper Convection Fan Error — LG's own wording. First, listen for the convection fan on a convection cycle. Then: for the convection fan codes LG gives the same sequence as for most F codes: CLEAR/OFF and retry, then the breaker off for 30 seconds if the code is still there — LG's own sequence.
Differential
Likely causes of “LG range or oven code F7, F17, F46”, and how to tell them apart
- 1
A convection fan motor that has failed
What separates it No fan sound on a convection bake and the code appears
How to confirm Start a convection bake and listen at the back of the oven
- 2
A fan blade that is bent or caught
What separates it A rattle or scrape before the code
How to confirm Look for a bent blade through the back panel with the power off
- 3
A cooling fan stalled or locked during a clean cycle
What separates it The code appears during or after self-clean
How to confirm Note whether it appeared when the oven was at self-clean heat
- 4
A fan fault on an induction or cooktop range
What separates it The code appears on a model with an induction cooktop
How to confirm Note whether a burner was in use
- 5
A loose fan connector or a control output fault
What separates it The fan works some days
How to confirm A technician tests the fan feed with the oven on
Before you touch a setting
Record this first — changing settings destroys the evidence
- Whether the code is F7, F17, F27, F45 or F46
- Whether the fan is audible and whether it rattles
- Whether it appeared during self-clean
- Whether an induction burner was running
Try in this order
0 of 9 completedWhat to do first
ReversibleListen for the convection fan on a convection cycle.
Correct only the documented fault domain
ReversibleFor the convection fan codes LG gives the same sequence as for most F codes: CLEAR/OFF and retry, then the breaker off for 30 seconds if the code is still there — LG's own sequence.
Listen
ReversibleStart a short convection bake and listen for the fan; F27 appears during self-clean, when heat is highest, so do not restart a clean cycle if it recurs.
Do the two-stage reset
ReversiblePress CLEAR/OFF and retry, then turn the breaker off for 30 seconds if the code returns.
Listen on a convection bake
ReversibleStart Convection Bake at a moderate temperature and stand at the front; a working fan makes a steady hum from the back of the cavity.
Feel for moving air
ReversibleHold a hand near the vents above the door; no airflow with the fan setting on points to a stopped fan.
Do not restart a self-clean
ReversibleIf F27 appeared during a clean, the cooling fan stalled in the hottest part of the cycle, and repeating it loads the motor again.
Check for something loose
ReversibleFoil or a pan pushed against the rear wall can foul a fan; take everything out with the oven cool and the breaker off.
Write down the cycle
ReversibleNote which function and cycle the code appeared in, and any rattle you heard first.
Model-specific
What is true of this model and not of its siblings
- Two kinds of fan
- The convection fan bakes evenly; the cooling fan protects the controls.
- Warning sign
- A rattle or scrape before the code suggests a bent blade.
- What LG says
- LG's list gives the reset and then service if the code returns.
Stop boundary
When this stops being a self-service repair
- !Stop a self-clean cycle if the fan will not run
- !Stop a self-clean cycle at once if the cooling fan will not run
- !If the code returns after LG's reset, book service with the model number and the exact code
- !Do not use the oven if the cabinet is very hot
Evidence ledger
Sources behind this answer
Where the manufacturer's article stops. LG words these codes as fan errors, so they share this page.
Exact questions
Common questions
What does F7, F17, F46 mean on a LG range or oven?+
an Upper Convection Fan Error — LG's own wording.
Is F27 different?+
It is a cooling fan that stalled or locked during self-clean.
Why does the oven smell hot with this code?+
A stopped cooling fan lets heat build up around the controls, which is why F27 during self-clean should be treated seriously and the cycle cancelled.
Can I keep baking without the convection fan?+
A conventional bake may still work, but the oven's own warning is that a fan is not running, and a hot cabinet is a reason to stop.
What is the difference between a convection fan and a cooling fan?+
The convection fan moves hot air through the cavity for even baking. The cooling fan pulls air through the cabinet to keep the controls cool, and a stall there is a safety matter.
Do the fan codes for induction models apply to a standard range?+
They appear on models with induction or similar cooktops, where LG words them as fan errors too.
Is it a cheap repair?+
A fan motor is a modest part, but access behind the oven makes labor the main cost.