If your pellet stove won’t start, the cause is almost always one of six things: no pellets reaching the burn pot, a dirty burn pot, a weak igniter, restricted airflow, a leaking door seal, or a safety switch that has tripped. Check them in that order, because the first three account for most failed starts and cost nothing to inspect.

This guide walks through each cause in the order a technician would test it. Always read your stove’s manual first, since feed rates, igniter types, and error codes differ between brands.

Which symptom points to which cause?

Start with what the stove actually does when you press start. The table below matches the most common symptoms to the likely cause and the first thing to check.

Symptom	Likely cause	First check
Nothing happens; the display is dark.	No power, tripped fuse or reset switch	Plug, socket, board fuse, manual reset limit switch
Auger runs, but no pellets drop.	Empty or bridged hopper, jammed feed	Hopper level, pellets clumped above the auger
Pellets drop but never catch fire.	Weak or failed igniter, wet pellets	Igniter glow, pellet dryness
Flame starts, then dies within minutes.	Dirty burn pot, poor airflow, flame sensor	Clean the burn pot, ash trap, and vent.
The stove starts, then shuts down within 30 seconds	Vacuum or pressure switch not closing	Hoses, exhaust blower, blocked vent
Smoke in the room, weak flame	Leaking door or ashpan seal, blocked flue	Door gasket, ash drawer, chimney
Error code or blinking light	Sensor, switch or temperature fault	Manual’s code table

1. Is fuel reaching the burn pot?

Open the lid and look at the hopper. An empty hopper is the most common reason for a failed start, and the stove will not always tell you clearly. Many models also have a hopper lid switch, so check that the lid closes fully.

If there are pellets but none reach the burn pot, watch the auger turn. Pellets can form a bridge above the auger, especially when fines and dust collect at the bottom of the hopper. Clear the dust with a vacuum cleaner and loosen the pellets by hand with the stove unplugged.

A struggling or silent feed motor can mean a foreign object in the auger, such as a stone, a piece of plastic bag, or a swollen pellet. Unplug the stove before you reach into the auger area.

Do the pellets themselves matter?

Yes. Pellets that have absorbed moisture swell, crumble and jam the auger, and they ignite slowly or not at all. Pellets stored on a damp floor or in an open bag are the usual culprits. Our guide to wood pellet moisture content explains why dry pellets matter, and the page on pellet storage and humidity shows how quickly a bag can degrade. If you suspect the batch, try a different bag of ENplus A1 wood pellets before you spend money on parts.

2. Is the burn pot clean?

The burn pot is where pellets ignite, and its air holes must be open. Ash, clinker (hard-melted residue), and unburnt pellet fragments block those holes. The stove then cannot pull enough air through the pellets, and the fire fails or smoulders.

Let the stove cool completely, lift out the burn pot if your model allows it, and clean every air hole with a stiff brush or a thin metal tool. Empty the ash pan and scrape the pot floor. Most manufacturers ask for a quick burn pot clean before every start-up or at least once per day of use, so follow your manual.

If you burn pellets with higher ash content, the pot fills faster. Heavy clinker usually points to pellets with a high ash or mineral content, which is one reason to buy certified fuel.

3. Is the igniter working?

Most pellet stoves use an electric hot-rod igniter that glows for several minutes at start-up. With the stove cold and unplugged, look at the igniter and its wiring. A cracked body, a broken wire or heavy ash coating is a bad sign.

Press start and watch the igniter. If the pellets drop but the rod does not glow orange within a few minutes, the igniter or its power supply has failed. Some models keep the igniter hidden, so you may only notice the lack of smell and warmth. Igniters wear out with use and are a standard replacement part. Replace it with the exact model listed for your stove.

If the igniter glows but the pellets do not catch, the problem is usually too little air or too many wet pellets in the pot. Go back to steps 1 and 2.

4. Is air moving through the stove?

A pellet stove needs a steady flow of combustion air in and flue gas out. If airflow is restricted, the fire cannot start or does not last. A wood pellet troubleshooting guide from WoodPellets.com names the air-to-pellet ratio as the main cause of trouble igniting and recommends checking that the venting is sealed and clear.

Check these points:

The exhaust blower spins when you press start.
Ash, a bird nest or snow does not block the fresh air inlet and the exhaust vent.
The ash trap and heat exchanger tubes are clean.
The vacuum or pressure switch hoses are free of soot and not cracked.

If the stove powers up and shuts down within about 30 seconds, a parts supplier’s troubleshooting page points to the vacuum pressure switch not closing. Causes include clogged hoses, a blocked vent or a dirty stove. Do not bypass the switch. It exists to stop the feed when there is no draught.

5. Is the door seal leaking?

The door, ash pan and hopper lid must seal tightly, because the stove controls combustion by managing how much air it pulls through the burn pot. Air leaking elsewhere upsets that balance.

Use the paper test. Close the door on a banknote or a strip of paper and pull it out. You should feel clear resistance. If it slides out easily, the gasket has flattened or hardened and needs replacing. Test several points around the door, since gaskets often wear unevenly. The same WoodPellets.com guide describes this test.

Gasket cord and adhesive are inexpensive, and most owners can replace them with the stove cold. Check the ash pan and glass seals as well.

6. What do the error codes mean?

Modern stoves show a code, a blinking light pattern or a message when a safety or sensor circuit trips. The meaning depends on the brand, so use the table in your manual, not a generic list from the internet. Typical groups of faults include:

Ignition failure: the temperature sensor did not detect fire in the allowed time. Check pellets, the burn pot and the igniter.
Air or vacuum fault: the pressure switch or draught sensor did not confirm airflow. Check vent, hoses and blower.
Overtemperature: a high-limit switch tripped, often from a dirty heat exchanger or failing room fan. Some models need a manual reset button.
Sensor or probe fault: a flame or temperature sensor is dirty, loose or failed.
Feed fault: the auger is jammed or the hopper lid switch is open.

Write down the code before you power cycle the stove. Clear the fault only after you have fixed the cause. If the same code returns twice after cleaning, stop and call a technician.

Safety notes before you touch anything

Let the stove cool fully and unplug it before opening the burn pot, auger area or blower.
Never bypass a safety switch to make the stove run, even for a test. Some online guides suggest it, but it removes the protection against fire and flue gas leaks.
Never use petrol, firelighter fluid or other accelerants.
Fit a carbon monoxide alarm in the room, and test it regularly. A stove that smokes or smells of exhaust needs attention before you try again.
Remove ashes only when fully cold, into a metal container with a lid.
Have the flue and chimney inspected and swept by a qualified person at the intervals your manual and local rules require.

When should you call a technician?

Call a qualified technician if any of these apply:

You smell exhaust gas, see smoke leaking into the room or your CO alarm sounds. Stop using the stove and ventilate the room.
The igniter, feed motor, blower or control board has failed, and you are not comfortable replacing parts.
The same error code returns after you have cleaned and checked the stove.
You find melted wiring, scorch marks or a damaged flue pipe.
The stove is still under warranty. Opening or modifying it may affect your cover, so contact the installer or seller first.

How to prevent start-up problems

Most start failures are preventable. Clean the burn pot regularly, empty the ash pan, and schedule a full clean before and during the season. Store pellets off the floor in a dry place, and keep the bag closed. Our list of costly pellet buying mistakes covers the choices that most often lead to jams and dirty burn pots.

Most residential stoves are designed for ENplus A1, and our ENplus certification guide explains what that mark covers. See our EN plus A1 wood pellets if you need a dry, certified fuel for your stove.

Key takeaways

Check in this order: fuel feed, burn pot, igniter, air, door seal, and then error codes.
Dry, clean, certified pellets prevent many start-up faults.
A dirty burn pot and restricted airflow cause more failed starts than failed parts.
Never bypass a safety switch, and keep a working carbon monoxide alarm in the room.
Call a technician for exhaust smell, repeated error codes, electrical faults or warranty cases.

FAQ on pellet stove won’t start

Why does my pellet stove start and then shut off?

Usually the stove did not prove airflow or fire. A dirty burn pot, blocked vent, clogged pressure switch hose or dirty flame sensor are the most common causes. Clean them in that order and retest.

Can wet pellets stop a stove from starting?

Yes. Damp pellets swell, jam the auger and burn poorly. If a bag has been stored in a humid place, replace it with fresh pellets and clean the hopper.

How long should the igniter glow?

It varies by model, but it typically glows for several minutes while the stove feeds a small amount of pellets. If it never glows orange, check the wiring and replace the igniter.

Should I reset the stove by unplugging it?

A power cycle can clear a temporary fault, but it will not fix the cause. Note the error code first, find and correct the fault, then restart.

Is it safe to keep trying to start the stove?

Not repeatedly. Unburnt pellets collect in the pot and can flare up when they finally ignite. Empty the pot and clean it before each new attempt.

Pellet Stove Won’t Start? 6 Causes to Check, in Order