Built-in oven fan repair by cleaning the clogged oven fan screen and install a new fan motor. This project is continued from How to Replace a Built-In Oven Fan.
Clogged Oven Fan Screen Causes Overheating
Important! The electricity was shutoff at the circuit breaker panel. Do not work on the oven if the electricity is On.
After the old and noisy electric oven fan was removed from my GE TrueTemp wall oven model #JTP27BA1BB, I got a good look at the fan screen and saw that it was almost completely clogged with dust and dirt after 10 plus years of service. The fan pulls air through the screen and the dirt is stuck to the far side.
The clogged fan screen could have been the root cause of the noisy oven fan motor. The fan motor couldn’t pull enough cool air causing it to overheat and wear out the motor bearings. The screen must be cleaned before installing the repair motor to prevent the control panel and new fan from overheating. I’m surprised the oven over-temperature safety shutdown didn’t activate with an F2 or F20 error code.
Clean the Oven Fan Screen
I tried cleaning the fan screen with an old toothbrush. Because the dirt is on the far side, I had to push the toothbrush bristles through the screen and wiggle it back and forth. I was making progress but it was slow and tedious work. I’m shining a high intensity flashlight through the screen here:
I thought there’s got to be a better way to clean the oven fan screen… with power tools! I grabbed my portable electric air compressor and attached the blow gun nozzle to blow the dirt off the screen. It worked great!
The oven fan screen is now so clean I can see the electrical conduit and cabinet wall through the screen. Note the red/orange color air compressor hose and blow gun nozzle at the left side of the photo:
Where did the dirt go? It fell in back of the cabinet with all the other dust bunnies.
If you don’t have a portable air compressor, try a compressed air duster as used for blowing dust off computer keyboards, cooling fans and such:
Install the New Oven Fan Motor
Additional photos of the old and new oven fan motor I ordered from AppliancePartsPros.com:
The new fan does not include the mounting bracket screws, so keep the screws from the old fan.
Side view of the fan motors:
A socket wrench extension is needed for clearance with the fan mounting bracket legs to set the fan screws. A simple trick to hold the screw in the socket is to wedge a piece of plastic (torn from the box shipping label) or tape:
The new oven fan is installed by:
- Mount the fan to the control pan housing with the four screws from the old fan.
Remember to orient the fan the same as the old unit; motor electric terminals are on the right in my case.
- Reconnect the fan motor wires.
Connect the colored wires to the fan identically as the old fan. It was much easier pressing-on the wire terminals compared to pulling them off the old motor. The fit is quite snug.
Reinstall the Oven Control Panel
Check the oven control panel for any loose wires – most wire connections are the press-on type – then carefully set the panel back on the oven mounting tabs and reinstall the control panel screws. Do not force the panel – it will install easily if there are no obstructions and the alignment is correct. See Part 1 of this project for removing the control panel.
Turn on the Electricity
I turned on the two 40 Amp circuit breakers to restore power to the GE built-in oven. The clock was flashing and I reset the time. The oven light worked when I opened the door. I set the oven to 350 degrees F and waited for it to heat up. After 10 or 15 minutes the oven fan turned on… and it was quiet! What a difference compared to the rattling old fan.
Hope this project saves you money,
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