KitchenAid Cooktop F7 E0 Error: Element Relay Stuck
What Does KitchenAid Cooktop Error Code F7 E0 Mean? F7 E0 on a KitchenAid cooktop means the main control board detected an element power relay that failed to open on command. Every time a burner is turned off, the board commands its relay open and then samples a current-sense circuit to confirm element load has […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. A stuck element relay is a fire and burn hazard. The affected burner cannot be controlled from the panel and may continue heating whenever power is available. Do not restore the breaker until service is completed.
Can I reset the code?
No. A breaker reset does not repair welded relay contacts or a failed driver transistor. The element resumes heating immediately when power is restored. This is a hardware-replacement fault.
When to stop immediately?
Stop if you notice: Affected burner produces heat with no touch-panel input, Smoke, burning odor, or glass discoloration near the element.
Symptoms You May Notice
Burner continues heating after it is turned off
The affected element keeps producing heat even though the touch panel shows the burner as off, and the hot-surface indicator stays on far longer than normal.
F7 E0 appears shortly after turning the burner off
The board performs a relay feedback check at shutdown — if the current-sense circuit still reports element draw after the relay is commanded open, F7 E0 is set within a few seconds.
Smoke, burning smell, or discolored glass near the affected burner
A stuck relay leaves the element at its last-set power level indefinitely, which can produce smoke from any cookware left in place or even bake discoloration into the glass at high settings.
Possible Causes
Welded element power relay contacts on the main board
Years of switching a high-current element eventually weld the relay contacts closed. Once welded, the contacts cannot open when the coil is de-energized — the element stays on until power is removed from the whole cooktop.
Requires ProfessionalControl board relay driver transistor failure
The transistor that drives the relay coil has failed closed, holding the relay energized permanently even when the board commands it off. Less common than welded contacts but produces the same fault.
Requires ProfessionalCurrent-sense circuit misreading element load
A faulty current transformer can report nonzero element current even when the relay has successfully opened, producing a false F7 E0 with no actual stuck relay. Rare but reported on older cooktop platforms.
Requires ProfessionalSafe Checks You Can Do
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1
Shut off the cooktop at the circuit breaker immediately
As soon as F7 E0 appears — and especially if the affected burner remains hot after being turned off — switch off the cooktop breaker at the main panel. Do not rely on the touch panel to stop the burner. Remove any cookware from the affected burner only after shutting the breaker.
A stuck element relay is one of the few fault conditions where continuing to operate the appliance creates an immediate fire or burn hazard. Treat it as urgent.
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2
Leave the breaker off until service is completed
Do not restore power to diagnose or test further — every restoration reactivates the stuck element immediately. Call a service technician and leave the breaker off until they arrive.
Note the time and circumstances of the failure for the technician, including what burner was being used and at what power level when F7 E0 appeared.
When to Call a Professional
Contact a qualified technician if:
- Main control board replacement clears the fault
- Relay contact welding visible on bench inspection
- Element current measured nonzero with relay commanded open
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