Wolf error code · Over-temp lockout
Wolf Oven Over-Temperature / Runaway-Heat Safety Lockout
A Wolf over-temperature lockout means the control saw the cavity exceed a safe limit and cut heat. Causes: stuck relay, shorted sensor, runaway element.
A Wolf over-temperature or runaway-heat lockout means the control detected the oven cavity climbing past its safe limit and cut power to the heating circuits to prevent a hazard. It is most often caused by a heating relay that welded closed, a shorted temperature sensor, or an element stuck on, and the oven stays locked out until the fault is cleared.
What Over-temp lockout indicates
Wolf ovens watch for the cavity rising faster or higher than any commanded cycle should allow. If the measured temperature exceeds the safety threshold, the control treats it as runaway heat and forces a hard lockout that disables bake and broil, regardless of what was set. This is a protective shutdown, not a cosmetic warning.
Likely causes
- Welded or stuck-closed bake or broil relay
- Oven temperature sensor (RTD) shorted low, under-reading the true heat
- Element drawing or arcing such that heat is uncontrolled
- Control board output latched on
- Thermal limit / safety thermostat involvement on applicable models
What causes Over-temp lockout
The dangerous case is a bake or broil relay whose contacts have welded closed, so the element keeps powering even after the control commands off. A sensor that shorts low can also fool the control into driving the element too hard. Less commonly a control board output stays latched on. Each leaves heat applied with no way for the control to stop it through normal means.
Symptoms you may notice
- Oven gets dangerously hot, then displays an over-temperature or high-limit fault
- Heat continues even after the oven is turned off or the cycle ends
- Strong heat or burning smell before the lockout triggers
- Oven refuses all bake and broil commands after the fault
- Fault reappears the moment heating is attempted again
Parts typically replaced for Over-temp lockout
- Relay (power) board — Replaced when bake/broil relay contacts have welded closed
- Oven temperature sensor (RTD) — Replaced when a shorted-low reading caused over-driving
- Bake or broil element — Replaced if the element is arcing or shorted to ground
- Electronic control board — Replaced when a control output stays latched on
- Thermal limit / high-limit thermostat — Replaced if the safety device tripped or failed on applicable models
Owner-safe checks for Over-temp lockout
- Turn the oven off immediately and, if heat continues, shut off the oven breaker at the panel
- Let the cavity cool fully before any further attempt to use it
- Do not run self-clean or try to bypass the lockout
- Keep the breaker off and call for service rather than power-cycling repeatedly
When to call a technician
Runaway heat is a safety fault. A welded relay or latched control output keeps high voltage on the element, which a technician must isolate and replace; this involves live high-voltage testing and access to sealed control assemblies that are not safe for an owner to open.
Frequently asked
Wolf Over-temp lockout: people also ask
Is an over-temperature lockout dangerous?
It can be, which is exactly why the control forces a shutdown. The underlying cause, such as a welded relay, means heat was being applied without control. Turn the oven off at the breaker and have it diagnosed before any further use.
Why does my oven keep heating after I turn it off?
That is the classic sign of a relay welded closed on the power board. The control commands off but the contacts stay bridged, so the element keeps drawing power. Shut the breaker and call for service.
Can I just reset it and keep cooking?
No. A reset may temporarily clear the display, but the welded relay or shorted sensor is still there, and the runaway heat will return. This is a repair, not a reset situation.
What part usually causes this?
Most often a stuck-closed bake or broil relay on the power board. A sensor shorted low is the next most common. We confirm with live testing before replacing anything.
Should I turn off the breaker?
Yes, if the oven continues to heat after being switched off, shut the dedicated oven breaker immediately and leave it off until a technician arrives.
How fast can you come out?
Because this is a safety fault we prioritize it. A flat $89 diagnostic identifies the failed relay, sensor, or board, and the repair is covered by a 365-day warranty. Call (650) 668-1554.
Could the high-limit thermostat be involved?
On some models a separate safety thermostat can trip or fail. We check it as part of diagnosis so the real cause of the runaway condition is corrected, not just masked.
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