Westinghouse Oven: thermostat not functioning

Professional Repair Guide

What is this symptom?

Is your Westinghouse oven not regulating or reaching the set temperature? You may notice inaccurate readings or fluctuations, resulting in undercooked or overcooked food. This issue could stem from a faulty thermostat, heating element failure, or other electrical problems. Proper diagnosis is essential for effective repair.

Urgency: Medium

Important Tips for Westinghouse Models

Westinghouse ovens commonly list thermostat/temperature sensor calibration issues and heating element problems in manufacturer and repair guides.

Possible Causes

Faulty oven thermostat or temperature sensor

How to Identify: Oven fails to reach or maintain set temperature despite preheating time; temperature measured via external thermometer significantly differs from set value; inconsistent temperature cycles.

Part: Oven thermostat/temperature sensor

Heating element failure

How to Identify: Element does not glow (electric, visible cracks or blistering, oven heats unevenly or poorly, even though thermostat appears to function.

Part: Bake or broil heating element

Control board or relay failure

How to Identify: Electronic controls fail to engage heating elements properly; no voltage to elements despite correct thermostat readings; error codes or unresponsive controls.

Part: Oven control board / relay board

Loose or damaged electrical connections

How to Identify: Intermittent heating or temperature regulation, visible burnt or loose connections near components.

Part: Internal wiring to thermostat/sensor/elements

DIY Solutions

Verify temperature with oven thermometer

Easy 10 minutes

Tools Needed: oven thermometer

Place oven thermometer in center of oven and preheat to a set temperature.
Compare thermometer reading with oven setting to assess accuracy.

⚠️ Safety First: Do not touch hot interior during preheating.

Inspect heating element visually

Moderate 15-30 minutes

Tools Needed: screwdriver, flashlight

Turn off oven power at circuit breaker.
Open oven and look at heating element for cracks/blisters or obvious damage.
If damaged, consider ordering correct replacement element for your Westinghouse model.

⚠️ Safety First: Ensure power is disconnected; heating elements can store heat.

Test thermostat/sensor resistance (electric ovens)

Advanced 30-60 minutes

Tools Needed: multimeter, screwdriver

Disconnect power at breaker.
Locate oven thermostat/temperature sensor inside oven cavity.
Use multimeter to test resistance; compare to expected values in manual.
If out of spec, replace sensor/thermostat.

⚠️ Safety First: Power must be off to avoid shock.

Professional Repairs

Replace oven thermostat or temperature sensor

Estimated Cost: $50 - $200

Control board repair or replacement

Estimated Cost: $150 - $400

When to Call a Professional

If internal electrical components (control board, thermostat, sensor) need testing or replacement

If DIY checks (thermometer, visual inspections) do not reveal obvious issues

Preventive Maintenance

Periodically verify temperature accuracy with oven thermometer: Temperature regulation issues and catching early thermostat drift
Frequency: every 3-6 months
Clean oven interior and vents: Blocked heat distribution affecting temperature readings
Frequency: monthly

Frequently Asked Questions

Why is my Westinghouse Oven thermostat not functioning?

Common causes include a faulty thermostat, heating element failure, or loose electrical connections.

How do I fix Westinghouse Oven thermostat not functioning myself?

Use an oven thermometer to check accuracy, inspect the heating element, or test the thermostat's resistance.

How much does it cost to fix thermostat not functioning?

Professional repair costs range from $50 to $400, depending on the issue.

When should I call a technician for thermostat not functioning?

If DIY solutions don't resolve the issue or if you suspect control board failure, it's time to call a technician.

References & Sources

Westinghouse Oven Not Heating: Troubleshooting Guide Repair-Blog
Oven not reaching set temperature causes & fixes Repair-Blog

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

65%

DIY Success Rate Difficulty: Either

Common Issues Reported by Users

Faulty thermostat sensor
Wiring issues or loose connections
Defective control board

User Suggested Solutions

Check and replace the thermostat sensor. First, unplug the oven. Remove the back panel to access the thermostat. Disconnect the old sensor and install the new one, ensuring all connections are secure. Reassemble and test the oven.
Inspect wiring and connections. Unplug the oven and check for loose or damaged wires connected to the thermostat. Repair or replace any faulty wiring. Reconnect and test the oven.
Replace the control board. Unplug the oven, remove the control panel, and disconnect the old control board. Connect the new control board, ensuring all connections are secure. Reassemble and test the oven.