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Model: JVM1870WF07	Brand: GE	Age: 1 - 5 years
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AlK		#1 Posted : Wednesday, May 20, 2009 10:51:01 AM(UTC)
Rank: Member Groups: Registered Joined: 5/20/2009(UTC) Posts: 2		Vent fan starts without any warning. I can't turn it off until I pull the plug. The air deflector doesn't open the fan just blows high.


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Gene		#2 Posted : Wednesday, May 20, 2009 1:42:16 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)		If it happens during the cooking on the stove than it's normal. There is a thermostat on the bottom of the microwave which senses the bottom panel temperature and operates the fan automatically (Owners manual, page 28). Here are the breakdown diagrams and Replacement parts for GE JVM1870WF07 \| AppliancePartsPros.com Gene.


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AlK		#3 Posted : Wednesday, May 20, 2009 2:02:21 PM(UTC)
Rank: Member Groups: Registered Joined: 5/20/2009(UTC) Posts: 2		Gene Thanks for the quick reply. The fan starts with nothing cooking on the stove or in the oven,or not even recently used. We can be sitting in the living room and it will just start blowing. The only way to stop it is to unplug the unit. Thanks


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Gene		#4 Posted : Wednesday, May 20, 2009 2:16:41 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)		Open the control panel and check the thermostat (#85 on the diagram) for continuity. It should be "normally open" - no continuity when it's cold. Gene.


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