Updating the Controls in the Harman Pellet Pro II.

Don2222

Minister of Fire
Feb 1, 2010
8,486
Salem NH
Hello

Anyone try doing this? It works well once I got the manual feed adjust set properly. :)

Harman Pellet Pro II
Updated to work with new P61 Manual Circuit board and P61 Wire Harness. The combustion blower was also updated with the quick change housing and a new OEM Harman combustion blower with single paddle 4-3/4" diameter impeller blade. The Manual feed adjuster still works to adjust the feeder to avoid the 6 Blinks Status Error and to adjust for the quality of the wood pellets. In this case it is adjusted to 8 full turns to the left to prevent the 6 Blinks error so the stove works as it should. see video
It really cranks out the heat! The shop came up to 97 degrees F in no time flat!

 

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Tim_M

Member
Mar 28, 2010
216
Halifax, NS
Do you know if this would work for an Invincible T? I think the Invincible was Harman’s successor to the Pellet Pro II, and I believe the controls are identical on the 2 stoves. My Invincible T has been working reliably as my basement heater for 8 seasons now. I had to have the board repaired a few years ago, sent it off to Brunners and it’s been great since. But I’m concerned that if another problem comes up I may not be able to repair it due to an inability to find parts.
 

Don2222

Minister of Fire
Feb 1, 2010
8,486
Salem NH
Do you know if this would work for an Invincible T? I think the Invincible was Harman’s successor to the Pellet Pro II, and I believe the controls are identical on the 2 stoves. My Invincible T has been working reliably as my basement heater for 8 seasons now. I had to have the board repaired a few years ago, sent it off to Brunners and it’s been great since. But I’m concerned that if another problem comes up I may not be able to repair it due to an inability to find parts.
Yes the controls are identical so it should work, even the auto board set to manual should work which is less money$ :)
 

Washed-Up

Burning Hunk
Nov 5, 2011
147
Kananaskis,Alberta, Canada
Well done! what would the total cost of these modifications? I considered something like this before I found my P61
 

Don2222

Minister of Fire
Feb 1, 2010
8,486
Salem NH
Well done! what would the total cost of these modifications? I considered something like this before I found my P61
You might be able to use the P38 Control Board update kit because the circuit board has Dip Switches to set the circuit board to the P61 manual board.Howeve I am not sure how the circuit board mounting plate will fit in. You may have to trim it? I got the manual circuit board, manual wire harness and circuit board plate where the left side is bent up and that fit in there quite well. :)
 
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