Parts for Thermador PRD304EHC/08: Control Panel Parts

The Spark Ignition Switch is an OEM part for Bosch ranges and cooktops. It controls the ignition of surface burner flames by emitting an electrical spark when activated.

Causes of a bad switch can be general wear and fatigue over thousands of start cycles. Exposure to moisture, dust or metal debris could also damage electrical components internally.

Symptoms of a bad spark ignition switch include:

• Burners failing to light even when valves are turned on
• Intermittent or irregular lighting of some burners
• No electrical sparks emitted from the ignition electrode

This genuine OEM Bosch part is also compatible with Thermador, Gaggenau and select Kenmore models.

This rotary potentiometer converts shaft rotation into an electrical signal the control board can read, providing precise position feedback for user selections. Replace it if inputs become erratic, jump between settings, or the control stops responding.

• Provides rotary position feedback to the electronic control
• Enables accurate selection and adjustment of functions or setpoints
• Wear or damage can cause drifting, dead spots, or incorrect readings
• Intermittent or no response to input is a common failure symptom

• Disconnect power before servicing
• Access the control/console area to reach the component
• Note shaft orientation and any connector positions; transfer exactly to the new part
• Handle electronics with ESD care and verify smooth, full-range operation after reassembly

This is an indicator light or display component mounted on the range's control panel that provides visual feedback about oven or burner status. It lets you know when a heating element is active or when the oven has reached the set temperature. Replace this part if the indicator fails to illuminate, flickers intermittently, or displays incorrect information.

Fixes burner not getting gas or won't ignite. Solenoid valve controls gas flow to individual burners. Moderate DIY repair for gas ranges and cooktops.

This is a spark ignition switch used on a range or cooktop that controls the electric spark to ignite the surface burners when the control knob is turned. It connects to the burner igniter circuit and signals when to fire the spark module. Replace this switch if your burners won't ignite, the spark clicks continuously even after the flame is lit, or the igniter fails to spark when the knob is engaged.

Replacement control knob for gas range. Restores grip on control shaft. Replace if cracked, stripped, worn, or missing to accurately select settings.