Harmon XXV Diagnosis

[Bruce B]

My older Harmon XXV stopped feeding pellets. The igniter light and feed motor light do not come on, even in test mode. However, the distribution fan and combustion fan are activated in test mode. My plan is to remove the feed motor and igniter to source replacements. It seems odd that the igniter would quit at the same time, though perhaps it is dependent upon the feed motor to activate.
This unit had been buried deep in a warehouse for many years when I purchased it five years ago. It’s a fantastic stove.
There are no repair technicians close by. Advice or alternative recommendations are appreciated. Thank you.

 

[Whitenuckler]

Check the vacuum switch (ie remove the wires from it, jumper and isolate from ground). Then try again.

 

[Bruce B]

Thank you. I will try that first.

 

[Bruce B]

All is well! Some pellets were inadvertently left around the vacuum switch under the glass lid, thus preventing the button from being fully depressed. I am so relieved. I now have the most lovely heat that I have grown so accustomed to.
At seventy years old I am a happy man now.

 

[johneh]

That would do it, and hard to miss when in a hurry!
Keep warm

 

[Whitenuckler]

All is well! Some pellets were inadvertently left around the vacuum switch under the glass lid, thus preventing the button from being fully depressed. I am so relieved. I now have the most lovely heat that I have grown so accustomed to.
At seventy years old I am a happy man now.

I can't take credit for that! That is the lid switch. Mine does not have one so I forget about that. I should have looked at the schematic. Also I was going to advise you to use a surge plug if you don't have one. Sometimes these issues are the control card, and you should protect that. Good Job !

 

[bogieb]

First thing I always check are the free things - especially if the stove started having issues right after I did something to it like cleaning, adding pellets, scraping the pot - coincidences don't usually happen.

Glad you got it figured out.

 

[Oregun]

Had to look, mine didn't have the switch on the lid. Mine was manufactured Nov 2014.
I tried two different AI brains one said 2006 the other said 2012.
Anyone know when this change took place?