Frigidaire pleb30t9fcc double oven -- top oven heats fine --- bottom oven does not heat up all the way

Your wiring diagram and parts schematics are here in the link below. Normally the bottom element does glow read hot after a couple of minutes. Broil elements last a lot longer because they aren't used as much. There is only one Control Board. If I was guessing, I would say the temperature sensor is at fault. Elements either work, or they don't, but you can easily test continuity with a meter. Many parts are discontinued.

https://www.searspartsdirect.com/model/3f7nkrfnvp-001428/frigidaire-pleb30t8ccb-electric-wall-oven-parts

..

I have the Frigidaire PLEB30S8CCA single wall oven. About 3 months ago the baking element appeared to have gone out. We replaced it, but still didn't work. We ended up sending our control board off to a company named Corecentric. They fixed the problem and returned it to us. The oven has worked perfectly ever since. I searched extensively for a new one, but no one sold them anymore. I found Corecentric on Ebay. They were able to confirm over the phone that it was more than likely a control board issue. It cost about $130. My husband was able to do it himself by taking a couple before px and using them when reassembling it.

whoever you brought it from get your money back

I have seen and have had bad soldier connections on the relays to the boards. check boards.

Hi,
Check out this tip that I wrote about this problem...

http://www.fixya.com/support/r4511800-oven_problems_electric_oven_heating

heatman101

have you inserted the business card as described in the solutions?

If the elements are good and you have checked the obvious connects etc. then it would seem to be the control circuit.

I found the lower circuit breaker had been tripped. That didn't fix the problem but upon further inspection whoever had worked on the unit years ago had dropped a screwdriver that had lodged between the oven wall and the rear casing and shorted out the lower heating element. I removed the screwdriver and oven works fine now. I don't think that will solve the cmmclow problem but maybee the curcuit breaker is tripped.

check the fuse/breaker for the bottom element

it must be thermostat in bottom oven