On the covered Whirlpool wall oven, F9, F9 E0 means the oven appears to be wired incorrectly at the home supply First, check the wiring at the supply, especially L2 and neutral. Then: have an electrician correct the supply wiring.
Differential
Likely causes of “Whirlpool wall oven code F9, F9 E0”, and how to tell them apart
- 1
The oven is wired wrongly at the home supply
What separates it F9 appears on a new installation or after the oven was reconnected
How to confirm Whirlpool says the code most often means the oven is wired incorrectly at the home electrical supply or at the hard-wire connection, with the L2 and N terminals swapped a common error
- 2
Line noise during a power outage
What separates it F9, F9 E0 or PF appeared after an outage
How to confirm Whirlpool says unexpected power supply line noise that the control detected as an incorrect voltage can trigger the code
- 3
A key pressed too early at power-up
What separates it The code appears right after power is restored and someone touched the panel
How to confirm Whirlpool says any key pressed before the 10-second delay on power-up can cause F9, F9 E0 or PF
Before you touch a setting
Record this first — changing settings destroys the evidence
- The exact display: F9 or F9 E0
- Whether the oven was installed or moved in the last three months
- Whether a household power outage occurred recently
Try in this order
0 of 6 completedWhat to do first
ReversibleCheck the wiring at the supply, especially L2 and neutral.
Correct only the documented fault domain
ReversibleHave an electrician correct the supply wiring. Whirlpool documents one check for this code — was the product installed correctly — so confirm that before treating anything else as the cause.
Ask whether it was installed correctly
ReversibleWhirlpool says the code will most often indicate the appliance is wired incorrectly at the home electrical supply or at the hard-wire connection. Ensure all terminals are wired correctly and the L2 and N are not swapped.
Have an electrician verify the supply
ReversibleContact a qualified electrician to verify the electrical supply was installed correctly, especially on a recent installation.
Reset the power
ReversibleTurn the breaker off for one minute, turn it on and monitor the oven for one minute; leave the panel alone for 10 seconds after power returns.
Verify once, then respect the service boundary
ReversibleWhirlpool specifies a 1 minute power interruption for this code, not an arbitrary one.
Model-specific
What is true of this model and not of its siblings
- Displayed as
- F9 or F9 E0.
- Parts named
- None; the supply wiring.
Stop boundary
When this stops being a self-service repair
- !Contact a qualified electrician for any check of the supply wiring; do not test terminals yourself with the power on
- !Turn off the breaker before you touch any terminal at the oven, and do not run the oven while the code shows on a new installation
Evidence ledger
Sources behind this answer
Where the manufacturer's article stops. The L2 and N note and the 10-second power-up delay are Whirlpool's own wording.
Exact questions
Common questions
What does F9, F9 E0 mean on a Whirlpool wall oven?+
the oven appears to be wired incorrectly at the home supply
What are L2 and N?+
The second hot leg and the neutral of the supply; Whirlpool says they must not be swapped.
Can an outage cause it?+
Yes; line noise during an outage can make the control read a wrong voltage.
Is F9 the same on a range?+
On a range the F9-1 to F9-3 codes name the door latch; see that page.