Ben for Model Number Model #PT960BM1BB This is a double oven, my upper oven stops working after about 3/4 hour at 375 temp. My lower works perfectly fine. This has been going on for quite a while so I stopped using it. Finally decided to get it fixed any idea the problem and a fix? thankx
Answer Ben, with the power disconnected you may want to inspect the convection WB44T10086, bake WB44T10105, and broil WB44T10106 elements have a proper resistance and that they are not grounding out from the control. At the upper relay board, the elements can be tested by placing one probe of a meter at the DLB relay J7 wire (orange wire) and then placing the other probe at the following points: broil J6 (purple wire) for 24 ohms, bake J5 (yellow wire) for 26.62 ohms, and conv J10 ( blue wire) for 22.30 ohms. From there you will also want to test each of the relays to the metal frame for continuity to ensure there are no ground outs. If there is continuity, then there is a grounded wire or part that would need to be adressed. If this all check good, then the most likely issue would be with the high limit thermal switch WB24T10081 or fan air flow. If the fan does not start when temperatures start climbing, then the fan WB26X10264 will need to be tested for voltage. If there is not voltage, then the relay board WB27T11060 has failed. if the fan does receive voltage but does not operate, then the fan has failed. Read More... Answered by AppliancePartsPros.com | Wednesday, September 4, 2019