Harman Pellet Stove Igniter For All Models 306W, 3-20-677200-AMP


A $100.00 Savings vs the OEM

SKU 3-20-677200-AMP
MPN 3-20-677200
In Stock
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Frequently Bought Together


This 306 Watt igniter is compatible with all automatic ignition Harman except those which use a pressurized ignition system.

Note: This igniter was 11 fins prior to 2008, 13 fins in stoves 2008-2010, 15 fins from 2011-2018 and is currently 16 fins. This igniter will replace all prior versions. View our detailed installation instructions.

Note: When using this igniter to replace an old style Harman igniter, it may be necessary to also upgrade to the new igniter cradle 1-00-777907. Please visually compare your cradles, the old cradles are no longer supported or made.

Replacement For Part Numbers:
  • 3-20-677200
  • 1-10-06620
  • 3-20-06783

Click To See Compatible Models
UPC: 763500152647

Compatible Models


  • Absolute 43
  • Absolute 43-C
  • Absolute 63
  • Accentra 52i
  • Accentra 52i TC
  • Accentra Cast Free Standing
  • Accentra Insert
  • Advance
  • Allure 50
  • P35i
  • P35i-C
  • P43
  • P43-C
  • P61
  • P61-C
  • P61A
  • P68
  • P68-C
  • PB105 (Pre: 008341121)
  • Furnace & Boiler Systems
  • PF100 (Pre: 008350087)
  • XXV
  • XXV TC

Technical Specs

Watts 306
Length 3.25"
Width 3/8" Rod With 15 - 1" Fins
Connectors Male Spades



Assembly Instructions For Harman Pellet Stove Igniter For All Models 306W, 3-20-677200-AMP

  1. The igniter is located in the burnpot and is accessible from the front through the clean-out door that is secured by the wing nuts. Loosen the wing nuts to remove the cover and access this area.
  2. The igniter is accessed and changed through the front of the stove but some access will be needed to the rear of the stove to loosen the wiring
  3. From the rear, locate the yellow and light blue wires for the igniter at the point where they pass through the stove, it is directly under the auger. There is an extra length of these wires looped together and secured to the stove that needs to be freed up so that the igniter wire disconnects can be pulled forward removed from the front of the stove. When you have enough wire free, push about 12" of length of the yellow and light blue wires into the cavity of the the stove where they enter to run towards the igniter.
  4. From the front of the stove again, remove the two 5/16" or 8mm screws that hold the igniter cradle inside the burnpot. Do not loose these screws as you will need them again.
  5. Drop the igniter assembly down and pull it forward until you can see the wire disconnects, then disconnect the wires from the harness and remove the whole assembly.
  6. To remove the igniter from the cradle, twist the the two tabs that secure the cradle and the igniter. Your igniter will now be able to be removed. Replace the igniter with your new one, making sure the wires go to the right. Reattach the cradle plate to secure the new igniter, twist the tabs and reinstall the cradle using the two 5/16" or 8mm mounting screws.
  7. Pull your wire length back through the stove until the disconnects rear the passthrough. Secure your extra length of wire with a zip tie.
  8. Replace the clean-out cover on the burnpot and start up your stove with the new igniter.


Ignition problems nearly ALWAYS have something to do with a dirty stove. Make sure your stove, the venting and the clean-out area inside the burnpot cavity where the igniter resides is free and clear. If these areas are clean and you still do not have ignition or maybe you only have ignition sometimes...and if you do it take s a very long time, inspect your door gasket and your door latch. If the door does not make a tight seal the stove can have problems igniting.

If your igniter light is not illuminated on the control board, chances are the igniter toggle switch is in the "manual" position. The igniter MUST be in the auto position to receive power. If the stove is not feeding at start up but the feed light and the ignition light are illuminated, the air flow switch is not closing or, on some models, a hopper lid switch is also in-line with this common wire. Make sure the hopper lid is secure and try the start-up sequence again. If you still do not get feeding, remove the hopper lid switch from circuit and try it again. If this works, replace the hopper lid switch.

If your stove blows a fuse when you try to start the stove but does not blow a fuse when the igniter is switches to "manual", there is going to be an exposed igniter wire touching the metal of the burn pot or the igniter itself is shorted out to the cradle mount.

The feed motor and the igniter share the same common wire return back to the controller. If your stove is feeding at start-up but will not ignite, open the door and feel the burnpot to see if there is heat present from the igniter. If there is heat, the igniter is working but there is a problem with air flow. Most of the time, the clean-out area where the igniter resides is dirty and/or the fins of the igniter are clogged with ash debris. Using a 5/16" or 8mm socket, loosen the mounting screws for the igniter two full turns and then using your fingers, tap the ignition assembly inside the burnpot to shake out the debris. Try the start-up sequence again.

If your stove still will not ignite, inspect your burnpot for cracks or wear-holes on the burn plate surface. If you see any, replace the burnpot.

If your burn pot is loose on it's mounts, tighten the four mounting nuts that connect the burnpot to the feeder weldment. There is a gasket between the burn pot and the stove that needs to make a tight seal. If you have the cast XXV or the Accentra freestanding and can see carbon or creosote building up around the burnpot mounting nuts, the gasket is not making a tight seal and ignition can be a problem.

If you have an XXV, Accentra Insert or Accentra freestanding stove that was made in 2007-2008 and there are 5 holes visible at the very base of the burnpot, just in front of the feed auger, you need to replace the burnpot. If there is a worn hole in the feed tube right where the burnpot connects to the stove, you may also need a new feeder weldment.

It is advisable to ALWAYS replace your door gasket when you are replacing an igniter. A leaking door gasket is often a contributing factor to igniter failure.

Troubleshooting Igniters:

Igniter failure can be verified on one of three ways. The easiest and most common way to see if the igniter is working is to start your stove or grill and visually look for the orange glow; however, some appliances do not have a visual way to do this, so you may have to physically feel around in the burn pot after the stove has been on for a few minutes to “feel” for heat being generated. If you can see the glow or can feel the heat from the igniter, chances are that the igniter is actually working. If this is the case, retry the startup process. Make sure your burn pot is seated correctly if it is removable. Make sure that your ash pan, door or hopper lid is closed as this will provide an airtight seal on the stove, which most igniters will require for proper ignition. If you still do not have any luck, give the stove a good cleaning, including the vent, and try again. If these attempts fail, further troubleshooting will be required, which leads us to the third method.

For this method, you will need a DMM (Digital Multi-Meter). Gain access to the igniter and remove it from the stove or insert. While you are taking the igniter out, verify that it is installed correctly with the correct mounting equipment, screws, etc.. With the igniter removed from the stove, you will need to look over the part to find the rated watts, it’s usually stamped on the metal somewhere. If you cannot find it, look on our website for the correct igniter; the information you are looking for will be under “technical specs”

If your Ohms reading is within 10%, more or less than the rating (46Ω +/- 10%), it’s good. If the igniter has a “contained short” or a short within itself and not grounding out, your Ohms reading will be very low...usually in the single digits. Generally, you cannot have a faulty igniter with too high of a resistance reading unless an igniter is installed that is way out of spec. An example of this would be your stove requires a 300W igniter but the stove has a 250W igniter installed. The reading in this scenario would be 52Ω. The reading would be correct to the igniter but would be the wrong value for the specified 300W igniter. That’s why it’s usually good to look at the part itself for the watts rating.


Unfortunately, sometimes products do not work like they are supposed to. We offer a 90 day warranty on manufacturer defects. Some manufacturers make this a very simple and easy process unfortunately others do not. Items must be used in accordance with the manufacturers guidelines to qualify for warranty replacement. Please be advised that warranty claims for these parts may take up to 4 weeks for processing, and customers must cover shipping.

Shipping Info

This Item Qualifies For Free Shipping With Orders Over $199!

When Will My Order Ship

All orders are typically processed within 24 hours of receiving payment and are shipped from us same day if placed before our shipping cutoff time (Monday - Friday: 1PM, Saturday: 10AM, Sunday: No Shipping), orders placed after our cutoff time are shipped the next morning.

How Does Free Shipping Work?

Most orders over $199 qualify for free shipping! Orders which ship for free are shipped with either USPS or UPS based on our discretion. If you are using a PO box, free shipping orders will always go USPS.

Is Expedited Shipping Available?

We offer both overnight and two day air shipping services for all orders placed within the Continental United States. For information on shipping cut-off times, go to our shipping page.

Do You Ship To Canada?

We ship to Canada! We estimate USPS to take 4-10 days once receiving your package from us. We do not offer expedited shipping of any kind to Canada. Please allow an extra 2-5 days for all shipments to Canada. Free shipping is not available to Canada.

Do You Ship To Alaska Or Hawii?

We ship to both Alaska and Hawaii! We do not offer next day or two day shipping to Alaska or Hawaii. Free shipping is not available to Alaska or Hawaii.

Do You Ship Outside The US Or Canada?

Unfortunately, at this time we do not offer international shipping other than to Canada.

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Customer Reviews

Based on 77 reviews
Michael N.

Harman Pellet Stove Igniter For All Models 306W, 3-20-677200-AMP

James W.
Quality looks good

I can't say too much about this. My original ignitor quit after 13 years. I installed my backup ignitor and ordered this as the backup

Becky S.
Harman Igniter

Our Harman Pellet Stove stopped igniting and the pellet feeder was piling up. We watched some videos to see what to do, gave it a thorough cleaning, and installed a new igniter we ordered here. Luckily my husband is handy and patient enough to do this himself and doesn't mind wiring. Up and running again in the cold spring weather.