The new ‘Lifetime’ Fire pot is now available by Harman for the PF100, PF120 and PB105. Earth Sense offers the aftermarket ‘Lifetime’ fire pot at reduced cost; built locally to exact spec.
Some customers have found issues during start-up with overfeeding once this new fire pot is installed. Below are instructions for adjusting your circuit board dip switches if you experience overfeeding on start-up.
- 1 off, 2 on, 3 on -64 seconds start up feed
- 1 off, 2 on, 3 off -43 seconds start up feed
- 1 off, 2 off, 3 on -21 sec. start up feed
I have a pf100 furnace I just put a new igniter in but it takes forever to lite and most times not the igniter is good just not enough I am brain racking to figure it out can you help me
Joe,
We are happy to assist. If you just purchased a new igniter everything should be good there. If you have a basic electric tester you can double check the OHMS on the igniter just to make sure. Touch the tester leads to the two igniter leads you should be getting a reading of 43.0 – 50.0 / 1.7 – 2.2+ Additionally double check the mount and make sure the igniter cradle is seated flush to the burn pot.
Keep in mind the igniter is not what’s lighting your fire, it’s the air being heated that rushes around it. First, use a mirror and light to make sure none of the burn pot holes are plugged- use a small screwdriver or paperclip to clear any out. Second, make sure the area underneath the fire pot where the igniter is mounted is clean and there are no obstructions in the intake ‘throat’ going back. If you don’t draw fresh air in, check the intake flapper and make sure it’s free. If you do have air intake from outside, check that vent to make sure there are no obstructions.
How does your fire burn once it does light or you light it? If it’s not as torchy and vigorous as it once was or should be, your door gasket could need replacement and/or combustion-exhaust fan could be getting weak. If either of these were an issue it would dramatically affect our start-up ignition as well.
Let us know what you find by replying here in the thread (It may help others too). Thanks so much, happy to assist.
-Taylor
I have a pf 100 and im having a problem with not enough pellets feeding into burnpot on start up any suggestions
Hey Ed,
Happy to help. Is this a recent issue or has this been the case since you owned the PF100? If it is recent, I would tell you to inspect the throat of the hopper and feed slide plate. Open up the sawdust cleanout chamber and make sure the swing arm appears to be moving as it should.Always good to check the simple things first. If this has always been a problem for you it could be a control board or control board dipswitch issue.
Happy to assist.
Thanks,
ESESstoves
We have a pellet 100 furnace and about a week ago the igniter seemed to fail. We have cleaned everything. The flu is working nicely. The problem is in manual lighting we get a great light and heat come on however the pellet feeder tries to feed but fails. Have gone through the cleaning of the auger and plate. It will go on but no pellets come through. We have cleaned the hopper exit totally but still no pellets come through. The feed motor light goes off and on and not feeding pellets then the pellets we light burn up and the fire goes out unless we fill it again manually. What could be the problem of the pellets not feeding even if the feed motor is running?
Thanks for contacting us Henry, happy to help. I would suggest starting with the basics first. Let’s make sure the auger motor is secured properly to the auger shaft with the set screw. Make sure it is tightened down on the flat edge of the auger shaft tightly. From there we need to really inspect the hopper and feed system with good light. Let’s make sure there is not a foreign object in there blocking or bridging the fuel from reaching the auger shaft. From there we can further inspect the feeder body and slide plate to make sure it is opening and closing as the auger motor is turning.
Let us know what you find there.
As for the igniter, let’s check the ohms and see if it is in operable range. Here is a video that will go through that. We will be adding more Harman Feed system videos to our channel this week which may be helpful as well.
https://youtu.be/z4wmCc96rVI
Not sure if my reply was sent. Went to watch the video and came back and it was gone. This may be a repeat.
The auger motor is tight to the auger shaft .
Have found a O ring on the slide plate. Removed it and now the pellets are getting from the hopper to the auger. Then the auger fills with pellets and that is where it stops. The auger does not move the pellets to the burn pot. The light showing the Feed Motor comes on and off and does not go into the burn pot then the fire manually lit goes out.
Just add that this all started the last day of December. We live in mountains where if is cold and the nights get into the teens so we are cold especially in the mornings. Have an igniter coming in a couple of days. Will replace that. Hopefully can solve this all soon.
Thanks for the message back Henry. It sounds as if the auger motor doesn’t have the torque needed to drive the auger shaft once fuel is coming in there. Is the auger motor making any noise? Does the motor appear to get bound up as pellets fall in the auger shaft? Can you physically see the auger shaft turning when pellets are coming into it from the hopper? We’ll get this figured out. I can bring additional techs in to assist as well if we need. Keep us posted.
Thanks,
The motor does not make noise that I have noticed. Have not observed the auger shaft turning when pellets are coming into it. It is hard to watch that all because it has to be closed in to work. It is when I open it up after it has stopped and see the auger filled completely. Agree that the auger motor doesn’t have the torque needed to drive the auger shaft once fuel is coming in. Have tried to order a new motor but say it is out of stock.
Thanks Henry. Depending on the year, your furnace will use either a 6 RPM or 10 RPM auger motor. Here are links to those motors for reference; It shows both currently in stock.
https://pellethead.com/product/harman-heatilator-6-rpm-clockwise-auger-feed-motor-oem/
https://pellethead.com/product/harman-heatilator-10-rpm-clockwise-auger-feed-motor-oem/
Under model notes you will see the serial number notes.
Keep us posted.
Thanks,
Sir, have put in a new motor, igniter and cleaned all channels to the burnpot. Have done everything possible to fix the furnace but it will not work. Pellets sometimes get to the opening to the burnpot and sometimes not. The lights all go on but nothing happens. No pellets ever get into the burn pot. The igniter cannot light if nothing is there. No need to tell you of the frustration in this house. Tomorrow is to be 26 for a high and 5 for a low. It is dangerously cold and we have no furnace. Trying to stay warmish with a couple of room heaters but it is insufficient.
Henry,
Have you inspected the feed system? Sounds as though we may have an issue with the slide plate dropping fuel properly into the auger shaft. Let’s clean the hopper all the way out and do some inspection. Here is a couple recent videos we put out on the Harman feed system. Let’s definitely check your sawdust cleanout box. For whatever reason messages on the website forum here seem to be delayed. Feel free to comment on our YouTube video/s, those always show up instantaneously.
https://youtu.be/l3-Wg1xRUy4
https://youtu.be/B-vWuLh9zbE
Installed a new motor. The igniter is also new. Everything checks out to be OK for go. However, when we turn it on it does not go. Now we are getting a 5 blink on the status light. This is the first time it has blinked any number. Not sure what to do.
Good afternoon Henry,
A 5 blink on the status light will indicate the unit failed to light within the allocated time sequence. Let’s check the air passageway under the burnpot to ensure there are no obstructions in the air intake. Lets make sure all the door gasket seals appear to be tight all around. Let’s double check the mount of the igniter in the cradle to make sure its flush to the burnpot. Let’s double check and make sure all burnpot holes are open. Let’s make sure our combustion blower is operating properly. Let’s check the simple items first, could be something small we are overlooking. Keep us posted.
Ordered a 10 motor cause that was on the furnace when it went out altho the book says it uses a 6 and the lady that was taking the order looked it up and said it needs a 6. The 10 is in transit. The 6 did not work.
Thanks for the message Henry. The RPM Auger Motor will depend on the serial number.
Quick Breakdown:
Fits the Harman PF100 Serial Number 004350583 and Greater and Serial Number 008350088 and Greater – Pressure Ignition Models
Fits the Harman PB105 Serial Number 008341122 and Greater – Pressure Ignition Models
Fits All PF120 Models
Please keep us posted on everything.
Thanks,
Still stuck! No matter what we do it will not get pellets to the burn pot. Found a repair man here at a stove place. Came out but could not get it started. Thinks it needs a new board or computer. Just will not work. He ordered one but shipment is delayed until March 12. Maybe we will get it going when warm weather hits. Something is not clicking.
Good afternoon Henry, very sorry to hear of the continued frustrations with the unit. The control board works with the ESP Exhaust thermistor probe on start-up and through operation. The two devices work together on how the unit feeds and how combustion air is adjusted. If you haven’t cleaned your exhaust ESP in awhile let’s give that a good cleaning and see if anything changes. Here is a video on that. https://youtu.be/kt7nnGMYU-k
Happy to help however we can.
Thanks,
Happy to report that the new control board was the answer. It is now going for the first time in 2 i/2 months, thru the coldest winter months. Been very hard going. Replaced all parts but nothing worked until the control board was installed. Don’t know why but are so relieved to be warm again. We won’t be posting again beings the problem is solved.
Wonderful to hear Henry. So glad your family is warm once again. Appreciate you sharing. Any future questions please let us know.
Warm Regards,
i have a Harmon pf100 furnace. we had the control panel replaced . the stove does light with flame but after a few minutes the flame dies down and the control panel is blinking 2 time.
Thanks for contacting us Greg, happy to help. The 2-Blink status light on your PF100 will indicate a vacuum error. Let’s Check:
1. Flue Pipe Exhaust Vent is Free and Clear
2. Firebox Door and Glass Gasket is sealing tight – no leaks
3. Fuel Hopper lid is sealing tight with no leaks
4. Combustion Blower/Exhaust Fan is operating near line voltage on start-up
5. Inspect the vacuum switch hose/tubing for any splits/cracks or loose ends
If all that checks out and you are still getting the error, let’s bypass the vacuum switch for testing ONLY. Here’s how to create a jumper wire to do this: https://youtu.be/FDVkbsHS95U?si=lU3rZfIv6NdANeCy
We can also test the vacuum switch with a multi-meter – video here on how to do this: https://youtu.be/kR0DQ6_YXuI?si=2mjQ6lzxD798SB1T
If you do need a new vacuum switch, see our listing here for reference: https://pellethead.com/product/harman-heatilator-vacuum-pressure-differential-switch-oem/
Keep us posted, happy to assist. Thanks.