Wolf dual-fuel range oven fan runs but there is no heat; display shows E05.

Safety first: Turn off the circuit breaker and verify power is off with a non-contact tester before accessing the rear of the range.

• Check terminal block: Pull the range forward carefully. Remove the rear cover over the power terminal block. Inspect for burned lugs, loose screws, or melted insulation. Tighten connections and replace any damaged wiring or block.
• Inspect relay board: Locate the oven relay board (often near the control board). Look for burned traces, darkened areas, or swollen components. If damage is visible, the board should be replaced.
• Check thermal cutoffs: Some Wolf ovens use high-limit thermostats or thermal fuses on the rear or top of the oven cavity. Test continuity; if open, determine cause of overheating (blocked vents, cooling fan failure) and replace the cutoff.
• Reassemble and test: Restore power and test a bake cycle. If E05 persists, professional diagnosis of the power and relay circuitry is recommended.