MB 800 fan not stopping

[hooked on smoke]

I need some help. I converted my Gravity 800 to a Fireboard Drive and the last several cooks were spot on. This morning however the fan will not stop running. The Fireboard is set at 225 yet the temp keeps running past 400 degrees.
Any ideas as to what may be going on??

Thanks in advance.

 

[Sammie The Bull]

I need some help. I converted my Gravity 800 to a Fireboard Drive and the last several cooks were spot on. This morning however the fan will not stop running. The Fireboard is set at 225 yet the temp keeps running past 400 degrees.
Any ideas as to what may be going on??

Thanks in advance.

Is your internal temp probe all gunked up? I would check with a analog oven gauge inside the cook chamber just to get a more accurate idea of what the realtime temp is inside, in case you haven`t done that already.

 

[hooked on smoke]

Is your internal temp probe all gunked up? I would check with a analog oven gauge inside the cook chamber just to get a more accurate idea of what the realtime temp is inside, in case you haven`t done that already.

Thanks for the quick reply. The probe is pretty clean. I did do a ice and boiling water test when I got the Drive unit. Although I have not done a real-time test. Good advice, thank you again.
Best regards,

 

[chopsaw]

the last several cooks were spot on. This morning however the fan will not stop running.

Just a thought that came to me when I first read the post . Maybe the sun ? I know that won't put you to 400 degrees , but maybe it's heating the cabinet enough that the fan tries to cool it down to temp , then it dumps more fuel and starts a cycle of running away ?
Like I said , just a thought .

 

[hooked on smoke]

Just a thought that came to me when I first read the post . Maybe the sun ? I know that won't put you to 400 degrees , but maybe it's heating the cabinet enough that the fan tries to cool it down to temp , then it dumps more fuel and starts a cycle of running away ?
Like I said , just a thought .

Good point but the temp outside was in the high 70's.
This was weird, the fan was literally out of control. Never stopped

 

[hooked on smoke]

My first instinct it that the temp probe is not registering.
Hens the out of control over temp.
Hmm, maybe I should try a different probe?
I appreciate everything and everyone that contributes to help us new guys.
Respectfully,
Me

 

[Sammie The Bull]

My first instinct it that the temp probe is not registering.
Hens the out of control over temp.
Hmm, maybe I should try a different probe?
I appreciate everything and everyone that contributes to help us new guys.
Respectfully,
Me

Make sure the internal cook chamber probe has a GOOD connection to the circuit board. Then do the ice water test if you can. Sometimes those pesky little connectors don`t have a good contact. Take a little metal probing tool and upset the connectors, this will help get a better connection to the male an female pins within the connection points.

 

[SmokinEdge]

If it’s hooked up with a Fireboard, make sure it wasn’t left plugged in. They need to be unplugged at least 30 seconds or. Yoder runs a Fireboard and that’s what they recommend, otherwise it can start acting goofy. I have the older control board in my Yoder and know for sure the unplugging solves a lot of annoying problems.