Jan 142011
 

Most newer ovens use an oven sensor to keep track of the cycling temperatures, if your model has a control board then it has a sensor. Testing and replacing the sensor can be done from the front of the unit in most cases.

Start by opening the door and looking on the back wall of the unit. The sensor is located on the back wall in most instances.

If I had to describe the sensor I would say it look’s like a metal pencil of sorts.. This small rounded metal sensor is held to the back wall  with two screws, removing the screws will let the sensor pull forward this will enable you to access the quick connect. Disconnect the sensor and replace.

If you are still trying to diagnose your ovens sensor you will need a volt meter to ohm the sensor. The oven sensor should read 1080 ohms at room temp.

If the sensor is off it can cause the control to have an error code, if the sensor test good you either have a bad control or wire harness issue. Investigating some of these sensor error codes myself I have found several wire harness cut from rubbing on the thin sheet metal over the years.  Verify the ohm value before ordering parts, doing so will aid in proper diagnostics.

Jan 142011
 

Testing a gas oven with a simple multimeter will aid in a proper diagnosis. If your glow bar is glowing red and no gas makes it down the flue it can still be bad.

Using an amp clamp you can verify a ignitors proper operation. In this explanation I’m referring to the flat style ignitor, more commonly used in the appliance industry.

The ignitor need’s to draw 3.2 amps to open the gas safety valve, when the ignitor reaches the correct amps the valve opens and the gas will light. Over time an ignitor will get weak or just break, replacing the oven ignitor is an easy feat with the correct tools.

Remove bottom of the inside of the oven, this will lead you to the igntor. Once the panel and shields are out of the way you will see the ignitor on the burner tube.

Tip here is when removing the screws from the burner base add a drop of oil, doing so will aid in the ignitor screws removal. With the ignitor off the tube you will have to disconnect the wires, if there is not a harness you will need to cut and splice the new oven ignitor into place.

Using only ceramic wire nut is recommended they hold up to heat better then plastic.  Once the oven ignitor is in place assembly the unit and test for proper operation.