Thermador Range / Cooktop / Oven Switch

The Potentiometer is an OEM replacement part for Bosch gas range or cooktops. It functions as a three-terminal resistor that adjusts the flow of electric current, which in turn, controls the ignition and temperature of the cooktop. This component is essential for the precise operation and control of the gas burners, ensuring they light up and maintain the desired flame intensity.

Causes of a malfunctioning Potentiometer can be attributed to wear and tear, electrical issues, or damage due to spills and cleaning products. A compromised potentiometer affects the flow of electric current, leading to issues with the ignition and temperature control of the gas burners.

Symptoms of a bad Potentiometer include:

• The cooktop not lighting or staying lit
• The ignitor continuously clicking without igniting the burner
• Inability to adjust the flame intensity or temperature accurately

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

The Vent Switch is an OEM replacement part for Bosch range hoods. It is an electronic control device located inside the range hood that regulates the internal vent and fan functions.

Causes of a faulty vent switch can include long-term use in high-heat cooking environments, damage from accidental spills or impacts, or normal component degradation over time.

Symptoms include:

• Failure of the fan or vents to engage during cooking  
• Variable or inconsistent fan speeds that don't adequately vent smoke
• Electrical shorting or sparking noises from within the hood control unit

This genuine Bosch replacement part is also compatible with Thermador, Gaggenau, and some Kenmore range hood models.

The Spark Switch is an OEM part for Bosch ranges. This part ignites the burners by sending a signal to the spark module, which then produces the spark needed to ignite the gas.  

Causes of a bad spark switch can include wear and tear from regular use, damage from spills or cleaning agents, or electrical issues.  

Symptoms of a bad spark switch include:

• Burners not igniting
  Continuous clicking even after the knob is turned off
  No spark when attempting to ignite the burner
  The cooktop not producing a flame

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

This potentiometer is the rotary sensor behind the control knob. It converts knob rotation into an electrical signal the control board uses to adjust settings, restoring smooth, accurate response when a worn or erratic control causes inconsistent operation.

• Translates knob rotation into a variable-resistance signal for the electronic control
• Enables the control board to regulate power/heat or speed, depending on model
• Common failure symptoms: unresponsive or jumpy settings, dead spots when turning, or settings that drift
• Helps restore precise, repeatable adjustments at the knob

• Disconnect power to the appliance before servicing
• Pull off the knob and open the control panel to access the potentiometer
• Move wires one at a time to the new part; align the shaft/flat to the knob as noted
• Reassemble and test full range of adjustment; follow any model-specific calibration if required

This door switch detects when the door is fully closed and latched. Replacing a worn or stuck switch restores safe, consistent start/stop behavior and ensures the unit only runs with the door securely shut. What it does:

• Senses door position and signals the control to enable/disable operation
• Prevents the appliance from running with the door open
• Resolves issues such as: won't start despite power, stops when the door is jostled, "close door" message, or needing to press on the door to run
• Helps restore reliable cycle start and proper safety interlock function

• 1 door switch

• Disconnect power at the breaker before servicing
• Access the switch behind the door panel or latch area; note wire locations or take a photo
• Move wire connectors to the new switch one at a time; ensure terminals are fully seated
• Reassemble and test door closure and operation before returning to service

This micro switch is a small, fast-acting on/off switch tripped by a mechanical lever or float to send a signal to the control. Replacing a worn microswitch restores accurate sensing so the appliance starts, stops, and runs when it should. What it does

• Senses the position of a linked mechanism (lever, float, latch) and opens/closes an electrical circuit
• Helps the control enable or disable functions only when conditions are correct
• Failure symptoms include intermittent operation, cycles that won't start, or a unit that keeps running until power is removed

• Disconnect power and, if applicable, shut off water before servicing
• Access the switch and note actuator orientation and terminal layout
• Move wires to the new switch one at a time to maintain correct placement; ensure tight connections
• Manually actuate the mechanism to ensure a positive "click" and proper operation before reassembly

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

Replacement potentiometer that restores precise control of appliance settings by regulating resistance in the control circuit. Use it when a rotary control is unresponsive or produces inconsistent settings for reliable operation. What it does:

• Varies electrical resistance to adjust settings controlled by the knob (e.g., temperature, speed, or level)
• Replaces a worn or faulty rotary control that causes unresponsive or erratic behavior
• Helps restore smooth, predictable adjustment when the original control no longer responds properly
• Fits into the existing control assembly to restore user input accuracy

• Disconnect power to the appliance before starting any repair to avoid shock or injury
• Access the control panel or module to remove the old potentiometer; note knob/shaft orientation and wiring
• Match wire connections and mounting position of the replacement part; test operation before reassembling the panel

This air interlock is the airflow switch that helps monitor and control dryer vent airflow, ensuring the appliance only runs when proper air movement is detected. It replaces a worn or failed interlock to restore normal vent sensing. What it does:

• Senses airflow through the vent and signals the control system to allow or stop operation
• Prevents dryer from starting or continuing a cycle when airflow is restricted
• Common symptom: dryer fails to start, stops mid-cycle, or shows poor drying performance
• Can help address intermittent operation caused by a faulty vent sensing switch

• Disconnect power before servicing to avoid electrical shock
• Handle the switch and wiring gently; verify connector orientation before reinstalling
• Confirm venting is clear and intact when replacing this part

This switch assembly replaces a faulty E34 - 19HV switch to restore proper electrical control in the appliance. It provides the same fit and function as the original to help re-enable the affected control circuit safely. What it does:

• Acts as the electrical switch that completes or breaks a circuit when engaged
• Restores normal operation when a failed switch causes intermittent or no response
• Commonly associated with control failures, unresponsive buttons, or power-related symptoms
• Matches OEM form and mounting to fit into the original switch location

• Always disconnect power to the appliance before servicing
• Handle wiring and connectors carefully; note wire locations or take a photo before removal

This infinite switch controls the heat level of a range surface element, restoring variable burner temperature control for cooking. It replaces a failed or intermittent control to help burners cycle correctly across heat settings. What it does:

• Regulates power to a surface burner so the element heats and cycles across low-to-high settings
• Commonly replaces units that won't heat, won't change heat levels, or that stay on/off unexpectedly
• Works with manual knob controls to provide smooth temperature adjustment
• Matches OEM function for safe, reliable element control when installed correctly

• One infinite (ESC) control switch

• Disconnect power to the appliance before testing or replacing the switch
• Remove control knobs and trim as needed; handle glass or ceramic cooktops with care
• Verify correct wiring and mounting orientation against the service manual or wiring diagram