What happened to me
The mornings turn chilly, you light the stove for the first time this season… and it struggles. The technician had advised me to empty the hopper. I didn’t. The pellets left in it took on moisture over the summer.
Manufacturers know this one well: in one stove’s manual, the list of reasons why it “does not light automatically” runs to thirteen causes, and damp pellets are one of them[1]. Here are the most common, in the order it makes sense to check them.
Before you touch anything
Stove off, cold and unplugged, ashes completely out: that is the manual’s first instruction before any cleaning or repair[1]. And if a smell of smoke spreads into the room when you relight it, switch the stove off[2].
The causes, in the order to check them
| What you check | What the manual says[1] |
|---|---|
| The hopper: empty, or pellets dull, swollen, crumbling | Fill the hopper. Damp pellets: check where they are stored and replace them with dry ones. |
| Pellets not dropping into the firebox | Unplug, empty the hopper and clear any blockage from the auger. If the auger motor is at fault: service centre. |
| The burn pot: dirty, or not seated properly | Clean it, and check that its hole lines up with the igniter. |
| The igniter (heating element) | Check it is getting power; replace it if it has burnt out. |
| The ash pan and the door | Close them properly. |
| The flue: a nest or foreign body after the summer, soot | Remove the foreign body from the flue or outlet pipe; have the flue cleaned. |
| Flue-gas fan, sensor, circuit board | Authorised service centre. |
One more precaution for the hopper: fines, a sawdust that settles under the pellets, build up at the bottom. Vacuum them out before refilling, with an ash vacuum[2]. Never remove the hopper’s safety grille: the manual forbids it[1].
Why damp alone can block everything
A quality pellet leaves the factory with no more than 10% moisture: that is the ENplus A1 limit[3]. The wood then takes moisture back from the air. A damp pellet swells, breaks up and clogs the auger[2]; if it still reaches the burn pot, it burns badly, fouls the firebox and blackens the glass[1]. One summer in a hopper, open to the air, is enough.
For next year
- At the end of the season, empty the hopper and vacuum the bottom. That is the advice I did not follow.
- Store your bags somewhere dry, ideally raised on a pallet[2], and close an opened bag tightly.
- Have the flue swept by a professional before the season. How often it is required depends on local rules: check them.
- Clean the burn pot regularly through the winter: the manual lists it among the user’s daily tasks, leaving the full clean to the technician[1].
Sources
- User manual for the Futura pellet stove (in French), chapters “Entretien et nettoyage” and “Pannes et solutions”. Every stove has its own manual: yours is the one that counts.
- Selectra, Remise en route du poêle à granulés : l’ordre des 5 gestes qui évite de tout nettoyer deux fois (in French), 9 September 2026.
- ENplus, Handbuch, Teil 3: Anforderungen an die Pelletqualität (in German), version 3.0, August 2015, table 1: moisture ≤ 10%.
