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Model: MH7140XF	Brand: Whirlpool	Age: More than 10 years
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Seawolf		#1 Posted : Sunday, May 19, 2013 12:37:30 PM(UTC)
Rank: Member Groups: Registered Joined: 2/8/2013(UTC) Posts: 5		There is an intermittent problem with this microwave. When you the close the door it will trip the circuit breaker in the service panel. It does not happen every time . Could this be the door switch? If so what part number do I need to order?


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Gene		#2 Posted : Monday, May 20, 2013 1:49:50 PM(UTC)
Rank: Advanced Member Groups: Senior Expert, Administrators Joined: 7/19/2007(UTC) Posts: 27,455 Was thanked: 4 time(s) in 4 post(s)		Hello, The problem can be a bad door switch (interlock and/or monitor) as well as a bad switches mounting plate. Unplug the microwave and open the control panel. Check all switches for continuity with the door open and locked. Make sure all switches are properly engaged when the door is locked. In case of any shortage in the microwave the inline fuse should blow. If it did not happen then probably the circuit breaker is too weak. What is the end of the model number? Gene.


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Seawolf		#3 Posted : Saturday, May 25, 2013 10:24:24 AM(UTC)
Rank: Member Groups: Registered Joined: 2/8/2013(UTC) Posts: 5		Hello Gene, This trips the breaker when the door is opened. I gave you the wrong info in the first post. I replaced the ceramic internal fuse a coupe of years ago and it never happened again . Now it has this issue with the breaker tripping when the door is opened. Here is the full model number MH7140XFB-0 Serial xcj3550513 Thank you for your response.


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Gene		#4 Posted : Tuesday, May 28, 2013 12:49:25 PM(UTC)
Rank: Advanced Member Groups: Senior Expert, Administrators Joined: 7/19/2007(UTC) Posts: 27,455 Was thanked: 4 time(s) in 4 post(s)		Hi, It does not make a difference. The test procedure is still the same. You have to determine winch part is bad before order any. Here are the breakdown diagrams and Parts for Whirlpool MH7140XFB0 Microwave - AppliancePartsPros.com Gene.


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Guest		#5 Posted : Monday, February 28, 2022 12:17:24 PM(UTC)
Rank: Guest Groups: Joined: 8/10/2018(UTC) Posts: 0 Location: 99556 Was thanked: 4 time(s) in 4 post(s)		I put all new switches and when door is open it stay on soon as I close door it’ll trip breaker


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