SYMPTOM

Oven Light Fails to Come On

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

⚠ What This Means

The interior oven light does not illuminate when the oven light switch is pressed. This is typically caused by a burned-out light bulb.

🔧 How to Fix

  1. Disconnect the range from electrical power or turn off the circuit breaker.
  2. Allow the oven to cool completely.
  3. Remove the glass light cover by turning it counterclockwise.
  4. Replace the halogen bulb. Do not touch the new bulb with bare fingers — use a cloth or gloves. Skin oils can cause the bulb to fail prematurely.
  5. Reinstall the glass cover by turning it clockwise.
  6. Restore power and test the light switch.

🔍 Possible Causes & Solutions

Possible CauseHow to Fix
Oven light bulb burned outReplace the oven light bulb. Do not touch the halogen bulb with bare fingers — use a cloth or gloves.

🛒 Replacement Parts for This Fix

Oven Light Bulb Halogen, 120V 25W
RepairClinic Amazon
Oven Light Glass Cover Threaded glass lens
RepairClinic Amazon

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❓ Frequently Asked Questions

What type of bulb does a Thermador oven use?

Thermador dual fuel ranges use a halogen oven light bulb. Always handle the replacement bulb with a cloth or gloves — fingerprint oils on the glass can cause premature failure.

Can I replace the Thermador oven light myself?

Yes. Disconnect power, let the oven cool, unscrew the glass cover, replace the bulb (without touching it with bare fingers), and reinstall the cover.