Alderlea T6 Auto Blower Fan questions

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scooby074

scooby074

Feeling the Heat
Jan 7, 2011
423
Nova Scotia
Is it normal for the factory blower to cycle when the STT is 675-700*F and in auto mode?

I know its supposed to shut down when the stove is cold and no longer producing heat, but lately I noticed it cycling when the box is hot and at operating temps.

It could have been doing it all along and I never noticed or maybe it kicks out at 700?

Any ideas? Right now the STT is 625, and the fan is running fine.
 
scooby074 said:
Is it normal for the factory blower to cycle when the STT is 675-700*F and in auto mode?

I know its supposed to shut down when the stove is cold and no longer producing heat, but lately I noticed it cycling when the box is hot and at operating temps.

It could have been doing it all along and I never noticed or maybe it kicks out at 700?

Any ideas? Right now the STT is 625, and the fan is running fine.
Click to expand...

If your blower unit is actuated by a thermo-disk, check to see if there is an air gap between the stove body & the surface of the t-disk. If the gap is too great, the passage of air being drawn into the blower will allow the t-disk to cool & open, causing the blower to stop. Once the t-disk heats back up, it will close again turning the blower on...I've seen this happen on units with t-disk brackets made from very thin sheet metal, which will distort over time, from the heat & pull the t-disk away from the stove body.
 
Thanks!

Yes this unit has a Tdisk. I never thought of that.

The bracket for the tdisk on my unit is pretty heavy gauge sheet metal though.. And it had a pretty significant bend in it to put good pressure on the firebox. I will check the clearances next time this happens.

There is no high temperature cut off for the blower that you are aware of is there? When I notice this happening, the stove is quite warm
 
Ours has never cut out on high-temp. And the stove has gotten plenty hot at times.
 
usally if there a large bend as you but the fan on the stove, it allows the t-disk to tip away on one side which allows it to cool and then cycle the fan. When I install a fan on a P.E. stove I try to set it up so that there is only abut 1/8 inch of pressure on the t-disk which allows full contact of the t-disk
 
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