pellets won't stop feeding

[sheriann127]

Harmon P61 --about 10 years old, won't stop feeding pellets, flames are dangerously high because the stove is turning white it is so HOT!

 

[SmokeyTheBear]

Harmon P61 --about 10 years old, won't stop feeding pellets, flames are dangerously high because the stove is turning white it is so HOT!

Turn the feed rate to zero, open the windows, and pull the plug.

 

[Jeffhab]

Same thing was happening on my Harman Advance -- 11 yrs old. Control board had to be replaced.

 

[Nicholas440]

Didn't Harmon use safety snap disc's like we have today ? Or some over temerature shut down limit control ? I would take Smokeys advice, and pull the plug on that rascal .

 

[Lousyweather]

Didn't Harmon use safety snap disc's like we have today ? Or some over temerature shut down limit control ? I would take Smokeys advice, and pull the plug on that rascal .

yes, they have a temp limit control, but not snap switches. There is a ESP in the exhaust measuring temps and controlling quite alot of stuff.....my money would be on cleaning the ESP first, if that doesnt work, replace it, if that doesnt work, replace the circuitboard.

 

[ironpony]

Didn't Harmon use safety snap disc's like we have today ? Or some over temerature shut down limit control ? I would take Smokeys advice, and pull the plug on that rascal .

yes, they have a temp limit control, but not snap switches. There is a ESP in the exhaust measuring temps and controlling quite alot of stuff.....my money would be on cleaning the ESP first, if that doesnt work, replace it, if that doesnt work, replace the circuitboard.

agree with this,
my harmon did the same thing
the ESP was caked up with a gummy substance
although usually if the ESP is bad the blowers wont run, i think
mine has been fine since doing this