P38X2
Minister of Fire
Thanks, Bioburner. The copper Permatex is rated up to 1800F. That's an easy find. Anyone know if the set screw is the issue, or is it the actual fan seizing on the shaft?
Harman P61 problem
- Thread starter rsoucy
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This had an allen on it. I was able to bet the set screw loosened and have the fan off and the motor out. I am going tomorrow to pick up a motor so should have it installed tomorrow evening sometime.
The PB Blaster seemed to work it free. I applied it to the top of the collar, and also shot it under pressure into the crack created by the flat spot on the shaft. It was locked solid yesterday, and did not take much to get it loosened today. The PB seemed to do its job.
The shaft was stuck but I had the fan unbolted so a sharp tap on the end of the shaft poking through the collar of the fan got it freed and it then came right out.
As I said earlier, I honestly believe I have a problem with the control board. It does not seem right that there is power to the combustion motor at all times independent of the mode and thermostat setting when the stove is cold. I am going to install the motor and get it fired up and observe the behavior. Could be I am missing something in my diagnosis so we'll see what happens.
So far all is well.
many of the distribution fans have torx screws, but all the combustion fan impellers for the Harman that I've seen have been Allen
I use a wire wheel on my drill driver to knock off the corrosion before applying the PB Blaster to the combustion set screw. That helps alot too.
See video and pics
https://www.hearth.com/talk/threads...wer-what-is-the-best-way.109353/#post-1440192
I know Harman has had some bug fixes to their control panel but they must be a well kept secret! Are their and Dealer service bulletins on control panel updates.
I am testing a P61a control board that does not keep the room to the temperature set on the dial within 1 degree! Not by a longshot? It is an older panel, Any list of bug fixes over the years?
See video and pics
https://www.hearth.com/talk/threads...wer-what-is-the-best-way.109353/#post-1440192
I know Harman has had some bug fixes to their control panel but they must be a well kept secret! Are their and Dealer service bulletins on control panel updates.
I am testing a P61a control board that does not keep the room to the temperature set on the dial within 1 degree! Not by a longshot? It is an older panel, Any list of bug fixes over the years?
Success! The combustion fan is back in and the stove is running fine. My fears around a bad board at least at this time seem to be unfounded.
I suspect this is pretty basic stuff for most of you, but I wanted to thank the experts here that provided advice and support. I learned a boatload about my stoves (I have 3 P61as with hopper extension, nickel trim and lighthouse tile - somewhere in the $10K ranges invested in Harman) and feel a lot more confident about being able to maintain them and do basic repairs down the road. This is a great website with some very knowledgeable and helpful participants. I notice some contributors are professionals in the business and it is great that you are willing to take the time to share your knowledge and experience with a do-it-yourselfer.
Thanks again to all that contributed.
Rick
I suspect this is pretty basic stuff for most of you, but I wanted to thank the experts here that provided advice and support. I learned a boatload about my stoves (I have 3 P61as with hopper extension, nickel trim and lighthouse tile - somewhere in the $10K ranges invested in Harman) and feel a lot more confident about being able to maintain them and do basic repairs down the road. This is a great website with some very knowledgeable and helpful participants. I notice some contributors are professionals in the business and it is great that you are willing to take the time to share your knowledge and experience with a do-it-yourselfer.
Thanks again to all that contributed.
Rick
P38X2
Minister of Fire
Glad you're back up and running. This IS a great site.
THREE P61's!?!?
Holy fricken BTU's! You heatin the whole neighborhood?
THREE P61's!?!?
Holy fricken BTU's! You heatin the whole neighborhood?
Bioburner
Moderator
Glad you're back up and running. This IS a great site.
THREE P61's!?!?
We have one installed in a 3000 sq ft home, a second installed in a 1700 sq ft home, and a third in a 1200 sq ft cottage. The first and third are primary heat sources and run constantly during the season. We have had all three of them for about 6 years and they have been extremely reliable workhorses.
lessoil
Minister of Fire
Not sure if this is the same situation as above.
If I have our P61 set to Auto,Room Temp and temp at min when I plug it in, the combustion fan runs for a few seconds then shuts down.
Is that what you meant when you said "When I power the stove up initially" ?
Good luck with the motor!
This is our 6th year with the P61. Love it!!
I wanted to get it done quickly, and decided to go with a Harman OEM part so paid a bit more than I should have. $148 was the final tally. I found some cheaper online and some after market that were cheaper, but with expedited shipping it was actually cheaper to go the local dealer route.
Mine does as you have just described. When powering it up (basically plugging it in after what Harman calls a "reset") my combustion fan comes on for a couple seconds then shuts down till I call for heat. I cannot explain what I was seeing during debug with the meter other than I screwed something up - I must have had the ignition switch on manual or ??? What I observed then was that the power to the fan output from the board was "on" at 120V all the time rather than shutting down after a few seconds. Again, must have been a bozo on my part because it obviously is behaving correctly with the new fan installed.
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