What is an infinite switch?

An infinite switch is an electrical control component in an oven or range that regulates the power delivered to a surface heating element. It allows users to select various heat levels, from a gentle simmer to high heat, by adjusting the element's on-off cycle.

How do I know if my infinite switch is bad?

Common signs of a failing infinite switch include a surface burner that won't turn on, won't turn off, is stuck on a single heat setting (often high), or if the control knob feels loose or spins without engaging the switch properly. Visual inspection might reveal burn marks or damage.

Can I replace an infinite switch myself?

Yes, replacing an infinite switch is a common DIY repair. It requires basic tools and careful attention to wire connections. Always ensure the appliance's power is completely disconnected before starting any repair to prevent electrical shock.

Whirlpool Infinite Switch Replacement Guide

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🏆 RECOMMENDED PART

3148954 3148953 3148951 3149400 8 Inch Range Burner Infinite Switch

Replaces part numbers: 3149400, 3148954, W10295573, AP6007666, PS11740783, 310180, 311846, 311858, 311859.
Fits Whirlpool, Kenmore, Maytag, KitchenAid, Amana, Roper, Estate, Inglis electric ranges & stoves.
Fix common problems such as burners not heating, staying on high, failing to adjust temperature, or indicator lights malfunctioning.
WP3149400 infinite switch for 8‑inch electric range burners

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What the WP3149400 does

The infinite switch controls the power supplied to a surface burner element, allowing for variable heat settings from low to high. It regulates the duty cycle of the heating element to maintain the selected temperature.

Symptoms when this part fails

Burner stuck on high heat
Burner not turning on
Burner not turning off
Burner only works on one setting
Control knob spins freely or feels loose

Compatibility

Fits the Whirlpool family. Specifically:

Any unit originally equipped with OEM part number(s): 3149400, 3148954, W10295573, AP6007666, PS11740783, 310180, 311846, 311858.
Check the model/rating plate inside your appliance and compare it against the fitment table on the product listing before ordering — this guide does not list specific compatible models because Amazon does not provide verified fitment data through this pipeline.

Also replaces: 3149400, 3148954, W10295573, AP6007666, PS11740783, 310180, 311846, 311858

Tools you'll need

Screwdriver
Nut driver
Pliers
Work gloves

Difficulty: Moderate · Time: 30-60 minutes

How to install the WP3149400, step by step

Disconnect power to the oven at the circuit breaker.
Remove the control panel knobs for the surface burners.
Access the back of the control panel by removing mounting screws.
Note or photograph the wire connections to the faulty switch.
Disconnect wires and mounting screws from the old switch.
Install the new infinite switch, reconnecting wires exactly as noted.
Reassemble the control panel and replace knobs.
Restore power and test the burner function.