Question about GE Advantium 120 Convection/Microwave Oven
The cooktop exhaust fan works fine manualy- high/low/on/off but the darn thing comes on in the middle of the night and any other time it feels inclined and you can not turn it off. Not only that, but the button control is off in the sense that when the fan is on high the read out says low and vice versa. Once you unplug it you can plug it back in and it will stay off for an hour or so but then will start up again all on its own
I also am having this problem with JVM1540DM1WW. Had the keypad replaced. Still happens. What did you do?
Posted on Dec 10, 2010
I would suspect that your hood fan thermostat is intermittently shorting, or less possibly a relay on the control board is sticking.
The hood fan thermostat (hood TCO) detects excess heat from the stove top and will turn the fan on automatically at its preset temperature.
The one on your model should turn on at 133F and turn back off when the temperature falls below 104F and it should have pink wires attached. (Other models may have different colors).
A failure of either the TCO or relay can cause unwanted operation of the fan.
One way to isolate a bad TCO is to disconnect and tape off the wires on one side. Preferably the side that goes to the fan.
If you or a friend does this, be sure the wire is taped over and secure so its metal will not touch anything inside (including the chassis) and so that the wire will not be damaged.
There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.
At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.
You can usually find helpful exploded view diagrams and order parts by entering your full model number here.
You can unplug the oven, swing the control panel down, find and pull the pink wire on the hood TCO that goes to the fan, tape its connector over and tape the wire to another wire clear of any metal or moving parts.
There's probably no need to disconnect any other wires to get to the TCO wires..
Then reinstall the control panel, plug the oven in, and use it for a couple of days.
If the fan does not come on at unwanted times, then you know the TCO is bad and can order one.
If the fan still comes on at unwanted times, then you have a problem on the control board,
We repair these smart boards on a regular basis for customers nationwide by mail with our guaranteed $39.95 service with a full one year warranty.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Dec 15, 2008
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Posted on Jan 02, 2017
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