How to Test the Oven Thermostat: 13 Steps

Table of contents:

How to Test the Oven Thermostat: 13 Steps
How to Test the Oven Thermostat: 13 Steps
Anonim

The thermostat indicates and regulates the oven temperature. To cook food evenly, it is essential that the thermostat works normally. Remove the thermostat from the oven and use a multimeter to test it. For a quick, easy and inaccurate test, use an oven thermometer. Compare the thermometer reading with the digital version of the oven.

Steps

Method 1 of 2: Using the Multimeter

Test an Oven Thermostat Step 1

Step 1. Turn off the circuit that supplies power to the oven

Turn off and unplug the oven. Look for the circuit breaker box and look at the circuit breaker door schematic to find the switch that controls the oven's electricity. Lower the switch to cut the power.

Turn off the oven power to avoid being electrocuted

Test an Oven Thermostat Step 2

Step 2. Unscrew the back of the oven

Read the warnings and instructions in the user manual. To find the thermostat, unscrew the back of the oven. Use a Phillips screwdriver to remove the screws from the rear socket. Remove the back panel after removing the screws.

  • The screws usually line up the perimeter of the back of the oven. Remove all of them to get the back plate free.
  • Store the screws in a safe place as you will reuse them for screwing the back plate after service is complete.
Test an Oven Thermostat Step 3

Step 3. Locate and disconnect the oven thermostat

The oven's thermostat is connected to a rectangular plate that has two screws and a wire that is connected to a square plastic socket. This object is usually located at the rear of the lower right side of the oven. Pull both plugs to disconnect the cord.

Test an Oven Thermostat Step 4

Step 4. Unscrew the back of the thermostat sensor and pull it out

Use the Phillips screwdriver to remove the screws that secure the thermostat plate to the oven. Keep the screws for reuse later. Pull the thermostat out of the hole.

Test an Oven Thermostat Step 5

Step 5. Set the multimeter to ohms

This device is used to test and measure the electrical current in a circuit and verify that the thermostat is working. Buy a multimeter at hypermarkets, building supply stores or online. The Ω symbol represents the ohm. It is present in most modern multimeters.

If your multimeter does not have an ohm option, set it to the 2k or 4k position

Test an Oven Thermostat Step 6

Step 6. Place the multimeter sensors on each side of the thermostat socket

Take the red and black sensors on the end of the multimeter and place them on the plastic terminals of the thermostat socket. Touch the sensors so that the round metal contacts the white plastic plug to take the ohm reading.

Test an Oven Thermostat Step 7

Step 7. Take the ohm reading using the multimeter

The oven thermostat that is at room temperature should read from 1,000 to 1, 100 ohms. A reading greater or less than this indicates that the thermostat is broken or damaged. If this happens, change the thermostat.

Test an Oven Thermostat Step 8

Step 8. Replace the thermostat after completing the test

If the test result showed that the appliance is working, reattach it to the oven. Place the thermostat inside the hole and screw on the back of the oven. Reconnect the plastic plug by pushing its ends. Then fix the back of the oven in the correct place.

Method 2 of 2: Using the Oven Thermometer

Test an Oven Thermostat Step 9

Step 1. Place the thermometer in the center of the oven

Compare the temperature that is showing in the oven with that of the thermometer. This will indicate whether the thermostat is broken or not.

Buy an oven thermometer online or at specialty household items stores

Test an Oven Thermostat Step 10

Step 2. Set the oven temperature to 117 °C

Allow the oven to preheat. As the temperature rises, the thermometer reading will also rise.

Test an Oven Thermostat Step 11

Step 3. Check the thermometer temperature

If the temperature is the same as indicated on the oven, the thermostat is working normally. However, if the reading differs, there may be a defect in the thermostat. Perform another test in the oven to see if the thermostat is working.

Test an Oven Thermostat Step 12

Step 4. Allow the oven to cool and repeat the process to make an average

Take two to three tests to ensure the first result was correct. If the thermometer temperature is different, the thermostat may be defective. Recalibrate or exchange this device.

The user manual may contain information on recalibrating the thermostat

Test an Oven Thermostat Step 13

Step 5. Adjust temperature to compensate for thermostat defect

If you are unable to recalibrate the oven thermostat, manually raise or lower it to the desired temperature. For example, if the oven is 7°C lower than you placed it, increase it by 7°C to reach the ideal temperature.

Popular by topic