Cabrio wed8200yw0 no heat issue

[PBeenis]

Hello, 

My dryer has stopped heating and I'm trying to find the actual issue but I feel as if I have chased down everything without a solution or a cause. Every single component in the heater circuit is good, element coils aren't broken, power from the cable/ends of the cord is good, all of the voltages for the control board are present, L1/L2 check out from the self test, and the centrifugal switch has continuity from L1/L2 when I push on the collar.

 

Is there anything that I'm missing here? I'm considering replacing the control board but I don't see any signs of damage so I'm skeptical.

 

Any help would be greatly appreciated, thank you.

[frunch]

Just to be sure, you checked for continuity on both of the thermostats/hi-limit on the heater box, the element, and thermal fuse? If all those things indeed check out, I would pull the control board out and remove it from its plastic casing in order to inspect the back side of it. I would suspect a possible blown solder joint on the relay that controls the heat circuit. 

[PBeenis]

On 6/25/2024 at 9:20 AM, frunch said:

Just to be sure, you checked for continuity on both of the thermostats/hi-limit on the heater box, the element, and thermal fuse? If all those things indeed check out, I would pull the control board out and remove it from its plastic casing in order to inspect the back side of it. I would suspect a possible blown solder joint on the relay that controls the heat circuit. 

I went through all of those steps yes, and ended up following the recommendation of the service manual to replace the control board (no visible damage on my original, I attempted to reflow the relay as well). I swapped boards about 2 weeks ago, and today the same issue has cropped up again. The replacement control board has a different relay but the same software revision for what it's worth. No visible damage on the replacement part either.

[AustinHines]

Door switch possibly.