Old Whitfield Prodigy II shuts down

[lbcsteve]

Hello All,

First time post here.

I installed an old Whitfield Prodigy II s/n WP01115 in my basement last year. It works well except it shuts down after running on Heat Output positions 3-5, positions 1-2 work fine. When it shuts down, the auger stops and blower stops, and the pellet feed light is dimly lit.
This year, I ghad it inspected by a local shop. They installed the fresh air vent kit (which I should have done!), cleaned the unit and tested for about 5 -10 minutes on position 5, the highest.
The stove has been running great, running almost non-stop, so the other day I got bold and went to position 3, and it ran great for about 20 minutes, then shut down as before.
-High limit switch?
-Any other ideas?

Does anyone have a good schematic for this unit? I am an experienced electronics tech and can probably find the issue with a good schematic.

Regards, and thanks in advance for any thoughts!

 

[Emilio]

I would adjust the combustion fan trim setting first , and try it again and see if that would help, good luck.

 

[imacman]

......Does anyone have a good schematic for this unit? I am an experienced electronics tech and can probably find the issue with a good schematic......

Would this help? Might want to give them a call and ask if the schematic is in the Tech. manual before buying it.

http://woodheatstoves.com/whitfield-prodigy-prodigy-ii-technical-service-manual-p-4259.html

 

[Stovensen]

The schematic diagrams of the wiring in the different versions of the Prodigy can be found on pages 22 - 23 in this .pdf:

http://www.hearthtools.com/parts/whitfield_wire_diagrams.pdf

Also, on page 20 in this .pdf, there's a precise explanation on how to adjust the blowers and pellet feed up to factory specs... you know, as suggested by Emilio, it might be just a matter of finding the "sweet spot".

Another thing... you could have too many fines/sawdust accumulated in the bottom of the hopper. Once in a while my stove also shuts down in the lower settings, and this happens only if I run into some pellets with too many fines.

Good luck and keep us posted

 

[Emilio]

by the way, have you checked your draft setting. it just dawned on me, it is probably starving of oxygenor getting too much of it....if the burn pot has a lot of unburned pellets, then that should be your problem...adjust your fresh air intake..let me know, good luck.