Breckwell P2000I Convection Blower Won't run on Low Speed

I have a Blackwell P2000I pellet stove that I purchased new in 2000 that won't run on low speed fan speed at any settings.
I replaced the circuit board and have the same results. I changed the convection blower with Fasco motor and same results.
Stove works fine but can't get motor to work in low speed.Any help or suggestions would be appreciated

smwilliamson said:

What's your voltage in to the unit? Yer not using a 150' extension cord to power this thing are you?

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Yes, it's a digital control board.
No extension cord at all. The stove is plugged into surge supressor that is pluged into wall recepticle.
Also, I thought it might have been the surge supressor ,but I plugged stove directly into wall recepticle and still gotten same results.
Well sounds like i'll try replacing the wiring harness .
I do appreciate your response.

STANG32 said:

its your pellets
I have the same stove & I burn stove chow, occasionally I will put it on setting 1 & it will go out, the pellets are larger than others, & the smaller pellets dump more pellets per turn of the auger than larger pellets will.
buy some hammers & try low speed, if it works, youll know for sure

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It's not the pellets all I burn are Hammer's
Fan will not work at low speed on any settings.

No repair or thermostat