SYMPTOM

Range Will Not Operate (Lights, Oven, Burners All Dead)

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

⚠ What This Means

The range is completely unresponsive — no lights, oven, or surface burners will turn on. This is typically caused by a loss of electrical power or the oven being stuck in Sabbath Mode.

🔧 How to Fix

  1. Check the household circuit breaker — reset if tripped.
  2. Verify the range is plugged in and the outlet has power (test with another device).
  3. Check that the power supply line is connected to the correct voltage (240V for dual fuel models).
  4. Verify the oven is not in Sabbath Mode (Extended Bake mode). See instructions below to exit.
  5. If the range was operating during a power failure, ensure all knobs are turned to OFF before restoring power.

🔍 Possible Causes & Solutions

Possible CauseHow to Fix
No power to the unitCheck for an open (tripped) circuit breaker and reset it.
Power supply connected to wrong voltageVerify that the range is connected to the proper voltage (240V/208V).
Oven is in Sabbath ModeTurn the Mode Selector Knob away from EXTENDED BAKE to any other position, then to OFF.

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❓ Frequently Asked Questions

Why is my Thermador range completely dead?

Check the circuit breaker first — a tripped breaker is the most common cause. Also verify the power cord is connected and the oven is not stuck in Sabbath Mode.

What voltage does a Thermador dual fuel range need?

Thermador dual fuel ranges require a 240V/208V, 60Hz electrical supply with a dedicated circuit and proper grounding.