Question about Microwave Ovens
HI. If the ignitor glows bright red, and the burner never starts up, this will be the result of a failed set of gas valve coils. These black, cylindrical shaped solenoid coils, can fail mechanically. I would recommend to test these coils for proper resistance. You will need to obtain a multimeter for this test.The coils are located, and mounted on the gas valve.
On the gas valve are one or two coils (solenoids) used to open and close the valve to control the flow of gas. If a coil fails, gas will not flow and the oven will have no heat.
The easiest way to diagnose a problem in the burner assembly is to observe the burner operation. Remove the small access panel at the bottom, front, or rear of the oven. Select a high temperature setting and start the appliance. Watch the burner assembly, shortly after starting the oven, the ignitor should begin to glow. Next you should hear the click of the gas valve coil and a flame should ignite. The flame should be mostly blue and it should remain on for a minute or more.
If the ignitor glows for several seconds (up to 15 seconds) and then goes out, the problem is probably the coils (solenoids). If the ignitor glows and stays on, then the problem is usually the flame sensor. If it ignites and then quickly goes out, it is most likely a problem with inadequate air flow.Test the coils for resistance using a multimeter. Set the multimeter to the ohms setting X10. Place a probe on each terminal of the coil. The multimeter should change from a reading of infinity to roughly 1300 ohms (+/- 150 ohms) when the probes touch the terminals. If the reading is infinity or substantially different from 1300 ohms, the solenoid should be replaced.
Posted on Dec 09, 2009
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Posted on Jan 02, 2017
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