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Re: can i cover my outside house vents in the winter?
You should never cover any vents, they are there for a reason, to keep you safe from fumes, damp, etc.. (If talking about vents that are outside you home). If you are talking about appliance vents then you run the risk of them breaking if you cover the vents, due to overheating
Vents that are outside the home including boiler vents etc... exhume all of the carbon dioxide that is bad for you. Vents that are there to stop damp, if blocked may cause you to have a problem with damp in the future.
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My Spacesaver bulb replaces from the top. You have to remove 2 screws that hold the upper vent cover. W/ cover off you will find a phillips head screw about the center that holds the bulb cover. Remove the cover screw & lift up & remove the cover, then replace the bulb, the cover & screw then put the vent cover & it's 2 screws back. There may be some variance but they are all similar.
It is indeed straightforward but it requires removing the 4 phillips head screws that hold the trim kit on. Then you need to remove it from the cabinet (along with unplugging the cord.) Once that is done you will need to remove the 4 black phillips head screws along the bottom part of each side, 2 phillips from the left rear and 2 security T20 screws from the right side. I found that removing the 2 screws holding the bracket on the capacitor and the front allowed me to move the light housing enough to get to the bulb. In my case the bulb had unscrewed itself. I am not a big fan of the engineering associated with this model or the labor that assembled it.
Every over the range microwave has a vent on it that should be venting that steam. I don't know of anything you could put under there that would solve your problem as that is where then vents are and they would be blocked. It sounds to me as though your steam is not being vented properly, and this could also happen if the steam is being vented back into the room instead of outside as many OTR microwaves allow you to do. Its a little bit of work to vent it outside but I myself did that with my microwave and have never had a steam accumulation problem.
You have a bad cavity switch. I would guess it is the one behind the vent cover, toward the left side of unit. You would need to remove unit from wall. Remove outer housing to expose cavity switch. You can see it from vent cover, I would test all cavity switches before removing from wall. You should have a diagram of unit folded up behind vent cover towards right side of unit. This tells all workings of unit. Will also tell where all cavity switches are.
you will need to tzke the unit down
look on the back upper middle
you will see your vent fan
open the cover
pull the fan up
and rotate it 90 degrees, but you will need to install a vent for it
you can also turn it 180 degrees if you on an outside wall and the ven is directly behind the machine
If this microwave has vented outside in the past then most likely a bird or something has built i nest in or on the vent blocking airflow. If its always been this way then in order for this model to vent though an exterior duct the blower motor has to be flipped so that it blows upwards and a vent connector needs to be installed. This is a fairly easy process once the microwave has been taken down but can be dangerous because there is a capacitor that holds 4000 volts that can discharge though the cabinet if you're not careful.
Your vent flap could be taped or it could be faulty installation not allowing the vent to open. If you take the front vent cover off, you should be able to reach in above the fan unit and gently push the vent flap up, it should move freely with no binding. If it doesn't it is taped or blocked. If it is taped, gently putting upward pressure on the flap might release the tape. If that doesn't work the vent installation is blocking the flap. You might have to remove the unit from the wall (two people to do this) or disassemble the vent duct above the microwave and rework the interface for clearance.
It's possible that the vents got blocked. If it vents to the outside, look for debris in the vent exit at the side or attic of the home.
If you're lucky, these will dry put (sometimes it helps to remove the cover) but sometimes the excess moisture gets in and cannot get out. This causes a keypad or control board failure.
Please post an update if you still need help.
Sounds like your damper (flap) outside is working, and that's probably the first thing to check.
Wind may be also pulling the damper open from time to time.
Hopefully the pipe fitting is sealed, and the pipe is insulated anywhere it runs through any unheated portion of the house.
Some amount of cold air getting in will be unavoidable.
The best bet next might be to look over the two pages in the installation instructions that deal with outside venting.
If you don't have the installation instructions, you can get a copy here: http://www.geappliances.com/service_and_support/literature/
Then if you don't notice any obvious problems with the installation, it may be time to contact the installer for their two cents.