Harman Accentra electrical buzz, no action

[movemaine]

I cleaned my stove, put everything back together and started it back up. It ran fine for about 45-60 minutes until it shut down.

Checking out why it stopped, I pulled it out and saw the green and yellow ground was not connected. I reconnected it and tried to start it back up, but no go. I can see nothing else wrong.

The board shows power, solid status and combustion blower (but the blower is not blowing). All I hear is an electrical humming. Would it running for that brief period with the ground disconnected screw something up?

And, if I put the feed rate on test, the distribution blower starts blowing.

Any ideas?

 

[Mt Bob]

Find what is humming.May have knocked a chunk loose and combustion blower is jammed.

 

[movemaine]

Find what is humming.May have knocked a chunk loose and combustion blower is jammed.

Combustion blower blades spin free, no blockage. I'm wondering if something fried.

 

[Mt Bob]

Well,I would run 120 volt direct to combustion blower,see if it runs,if does,check all wiring,pull control board see if any obvious damage.

 

[movemaine]

Well,I would run 120 volt direct to combustion blower,see if it runs,if does,check all wiring,pull control board see if any obvious damage.

Will do. Thanks.

 

[movemaine]

Well,I would run 120 volt direct to combustion blower,see if it runs,if does,check all wiring,pull control board see if any obvious damage.

Combustion blowers getting power, so I'll start there. Thanks.

 

[movemaine]

Alright, so I ended up calling the pellet techs and they took out the combustion blower and put it back in and the stove started right up...

It's been running fine since (3 weeks or so). However, today I vacuumed out the ash and the same thing occurred. The stove is making an electrical buzzing noise, the light is showing combustion blower, and nothing else is happening. I'm wondering if my vacuuming is somehow tripping a vacuum sensor or something similar?

Cleaning/vacuuming is the only thing these two events seem to have in common.

 

[movemaine]

Seems the combustion blower is dying. I removed the blower, hooked it up to power and it attempted to spin but wouldn't turn until i gave it a little push. After that it started right up every time, but it looks like a new part is in my future.

 

[Ssyko]

Try a couple drops of 3in1 oil on each end of the armature shaft to lube the bushing/bearings. Might free it up

 

[movemaine]

Follow up question - is vacuuming somehow tripping something? I did a quick vacuum this morning (vacuumed the ash pan and the open space on the sides) and the same thing happened. The blower won't engage. Every single time it's when I do a quick vacuum (not a full clean).

In testing, the distribution blower is locked up when it's receiving power and in this state. You can't turn the blades at all. However, I can 'jump start' it by turning power off, spinning the blades and while the blades are spinning turn the power back on.

 

[Mt Bob]

Follow up question - is vacuuming somehow tripping something? I did a quick vacuum this morning (vacuumed the ash pan and the open space on the sides) and the same thing happened. The blower won't engage. Every single time it's when I do a quick vacuum (not a full clean).

In testing, the distribution blower is locked up when it's receiving power and in this state. You can't turn the blades at all. However, I can 'jump start' it by turning power off, spinning the blades and while the blades are spinning turn the power back on.

Was the stove plugged in while vacuuming?Vacuuming wood stove dust creates lots of static electricity.

 

[movemaine]

Was the stove plugged in while vacuuming?Vacuuming wood stove dust creates lots of static electricity.

Plugged in, but off. I'll try it next time with it unplugged.

 

[Mt Bob]

Plugged in, but off. I'll try it next time with it unplugged.

That could be the issue,especially if there is a weak ground,or weak control board.Let us know,next time.