Harman P68 aftermarket combustion fan

Gleason Avery is the manufacturer for the Harman combustion blower. Try 1238-11142. Or BM 2524-A1506T-12. At least a fellow forum poster put this information out last month. Let us know how you make out, and if you saved any $.

Found this on stovepartsunlimited.com

$102







Harman Exhaust Blower Motor
Usually Ships in 1 to 2 Business Days
Our Price: $50.00

Usually Ships in 1 to 2 Business Days
Our Price: $68.00

(1)
Usually Ships in 2 to 3 Business Days
Our Price: $102.00

(29)



3-20-232108. Click for model info.Replacement thermister / ESP probe (Red wires) for Harman and Heatilator Eco-Choice pellet and coal stoves. Fits most newer models. Harman part number 3-20-00844. Click for model info.
Replacement exhaust / combustion blower motor for Harman pellet stoves. Fits the Pellet Pro P38 Plus, P35i, P43, PC45, P61, P61A, P68, PF100, PB105, HF60, Advance, Accentra FS and Insert and Harman XXV. Also fits the Harman DVC-500 coal stove. Harman part number 32108639 (3-21-08639) This is a non OEM part

You may also need a new fan blade, if you can't easily remove the old one. Use a 1/8 inch hex to remove the set screw to remove the fan blade. If you wind up with a worn out screw or rounding out the hex wrench, you may have to drill out the set screw. Have a spare set screw on hand, and some high temp never seize compound to coat the replacement set screw so next time you can remove it more easily. Let us know how you make out and good luck.

It does have two fan blades. One large fan on the inside of the stove to control air flow out the flu and past the ESP probe, and a much smaller fan behind the blower which cools the blower motor.

Well that surprises me. You have a P68 combustion blower that does not look the same as the one shown in the photo I previously posted?

The

SininStyle said:

It looks the same just with a much larger cooling fan on the back side of it.

Click to expand...

To the best of my recollection,the fan you have pictured is older and discontinued, It actually has 3 fans. the one on the outside end, enclosed in the black plastic shroud, is no longer included.

How old is the stove, and is this blower original? Five years with these blower motors are about all you can expect. I would replace it sooner than later if it is making noises. You don't need to deal with complete failure when cold weather returns.

SininStyle said:

The 3rd fan is inside the ash pan storage correct? blowing exhaust out the pipe I assume. important motor lol. Motor runs fine its just starting to make noise thats a fair bit annoying.

Click to expand...

Correct. If you feel that it runs fine, it may just be a piece of crud in there, or a bent blade, or a bad bearing.
To remove the assembly, you must first remove the fan inside from the motor shaft which can sometimes be a bear.
I had to heat mine briefly with a propane torch to get it free.
If it is a bearing, it is probably cheaper and easier in the long run to replace the whole unit, unless you are REALLY proficient at such an undertaking.

Mine would not run at all and turned out to be a 50 cent thermal fuse. Thats a whole different ball of wax.

Well good luck. It sounds like you are capable of these repairs. Not sure if you can breathe new life into a four year blower motor by replacing bearings or not. Maybe need new brushes, or a complete overhaul. Do others agree on this forum that the new replacement blower is backward compatible with your older style blower? I'm thinking that the answer is yes.

Well it looks like you have replaced the major items except the auger motor, and control board. I think Harman redesigned the igniter, so there is a good chance that you have the newer style already in place, as the 4 yr old model would not be still be functioning. The next items to replace will likely be your upper and lower door gaskets, as they only last five years as well.

Here's a cleaning tip: vacuum out the fines box every two weeks or so. I know Harman suggests only a yearly cleaning, but I can tell you from experience, that yearly is not any way near enough. I'm thinking with all those fines and pellets accumulating, it can't be good for the life of the auger feed assembly. And by keeping it clean, you will maybe never get the dreaded whining noise of a dirty auger feed box.

SininStyle said:

Yeah it lists the P68 as acceptable so I assume it should be. Especially if the blower I have was discontinued and they no longer use that huge outer cooling fan.
I dont think I will be able to bring new life to it but I can crutch it for a fall back. All depends how difficult it is to take apart. I havent tinkered with it as I need my heat hehe.

Click to expand...

I just replaced the bearings on this motor, same one for my boiler. It's kind of a PIA to disassemble, the internal fan blades are a friction fit to the motor shaft, real easy to distort the blades, plus the fact that you may have to pean over the hole in the fan blades to make them fit tight to the motor shaft. Good luck.The bearings that I used are in the link below, note the grease that is used in these bearings.

http://www.ebay.com/itm/Qty-10-608-...=BI_Heavy_Equipment_Parts&hash=item5ae931f826

Edit: Another option if you are looking for a motor with another cooling fan in the link below. Ask to find out the diameter of the motor shaft prior to buying, needs to be .312 (5/16")

http://www.ebay.com/itm/Packard-668...528?pt=LH_DefaultDomain_0&hash=item337c0bed50

Harman parts numbers

https://www.hearth.com/talk/threads...cret-so-guard-this-info-with-your-life.94568/

Hello
Harman upgraded the amperage on their combustion blowers

See
Recent Harman Combustion Blower Upgrade! but why?
https://www.hearth.com/talk/threads/recent-harman-combustion-blower-upgrade-but-why.126166/