SYMPTOM

Error Message After Power Failure (Knobs Not in OFF Position)

Appliance: Thermador Dual Fuel Range Models: PRD304GHU, PRD364GDHU, PRD366GHU, PRD486GDHU, PRD364NLHU, PRD486NLHU, PRD484NCHU, PRD305PH, PRD364JDGU, PRD366JGU, PRD486JDGU

⚠ What This Means

After a power outage, the oven displays an error message upon reinstatement of power if any oven knobs or selectors were not set to the OFF position. This is a safety feature to prevent unintended oven operation after power is restored. All oven functions are disabled until the error is cleared. On Pro Harmony models (which lack a digital display), the oven simply refuses to operate until knobs are reset. On Pro Grand models (with digital display), the screen shows the error message.

🔧 How to Fix

  1. Turn all oven knobs (Mode Selector Knob and Temperature Selector Knob) to the OFF position.
  2. Reset the circuit breaker (turn it OFF, wait 10 seconds, turn it back ON).
  3. The error message should clear and normal operation should resume.
  4. If the error persists after resetting, verify that both oven knobs on each oven cavity are fully in the OFF position.

🔍 Possible Causes & Solutions

Possible CauseHow to Fix
Oven knobs were not in OFF during power outageTurn all oven knobs to OFF and reset the circuit breaker.
Circuit breaker was not fully resetFlip the breaker fully OFF, wait 10 seconds, then flip back ON.

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❓ Frequently Asked Questions

Why does my Thermador range show an error after a power outage?

This is a safety feature. If any oven knob was not in the OFF position when power was lost, the range displays an error to prevent unintended heating. Turn all knobs to OFF and reset the breaker.

How do I clear the error message on my Thermador range after a power failure?

Set all oven mode and temperature knobs to OFF, then reset the circuit breaker. The error should clear when power is restored with all knobs in the OFF position.