Pit Boss Smoking From Hopper? Don't Unplug

Pit Boss's own troubleshooting page gives one instruction for smoke coming out of the hopper. Turn the dial to its lowest setting and hold Prime. Unplugging isn't part of that instruction anywhere. Most guides for this exact problem recommend it first.

Our pellet grill guide explains why checking the manufacturer's actual procedure matters here, not just for this one grill.

One widely-cited troubleshooting page we checked while researching this piece tells readers to do the opposite. It says to unplug the unit directly from the wall if smoke is heavy. It never mentions Pit Boss's own FAQ, and neither does any other guide we found ranking for this problem.

What Burn Back Actually Is

Pit Boss has a name for what you're seeing: burn back. The flame or heat source reaches the auger shaft, and the pellets inside it smolder or ignite. The fire then works its way backward toward the hopper instead of staying in the firepot where it belongs.

Pit Boss names two causes, and both point at airflow rather than a single dirty part. The causes are improper air flow, or an overabundance of pellets sitting in the firebox. Either one usually means something in your grill's system needs attention, not just "the grill needed a clean."

Do This Right Now

Turn the temperature dial down to its lowest setting. Hold the Prime button. That pushes the burning pellets out of the auger tube and into the burn pot, which is where they're supposed to burn in the first place.

Don't unplug your grill right away. Pit Boss doesn't explain why in its own documentation. The Prime function needs power to run the auger, and cutting power removes the one tool that's actually clearing the pellets out of the tube.

Why It Happens: What One Owner Found When They Looked

A Pit Boss forum member walked through this exact symptom mid-cook, the kind of moment you might be in right now, and got a detailed answer worth reading in full. It matches Pit Boss's own airflow-and-pellets framing, just from the owner's side of the grill. If your grill is unlevel, or your firepot is packed with holes or excessive ash, pellets get held at the auger's edge instead of dropping in cleanly. Stuck there, they can't push forward, and that's exactly the condition that burns back.

The same reply adds two habits Pit Boss's own back-burn page doesn't mention. A full hopper provides enough back pressure to keep smoke flowing toward the barrel instead of blowing back through the auger. Keep the hopper topped up and its lid closed rather than running it near-empty.

If the hopper is still smoking as you're finishing a cook, especially at higher cooking temperatures, that's worth addressing too. Ramp the dial down to around 200°F for a few minutes before switching off, which gives the firepot time to burn off what's left instead of leaving a live ember sitting next to the auger entrance.

This is one detailed owner account, not an official Pit Boss claim. Treat it as a useful, plausible explanation for what's going on underneath the grill, not a substitute for Pit Boss's own documented cause-and-fix.

Prevent the Next One

Two habits Pit Boss documents officially cut down on both named causes before they start.

Start every one of your cooks the way Pit Boss's own procedure specifies: lid open, on the smoke setting, for 10 minutes. That step keeps the firepot from being overloaded with pellets at startup and helps prevent a backdraft in the unit. It directly addresses the "overabundance of pellets" half of the burn back cause.

Clean your firepot on Pit Boss's stated cadence: after every 40-60 lbs of pellets burned through your grill, vacuum out the ash. Ash buildup blocks the same air intake holes that, when blocked, feed the "improper air flow" half of the cause.

If It Keeps Happening

Cleaning and leveling your grill fix the airflow-and-ash cause. They don't fix a genuine mechanical or electrical fault, which is Pit Boss's other named cause. Two independent forum reports describe the same resolution for a recurring case: Pit Boss Customer Care sending a replacement part.

The exact part named differs. One report names a new auger motor, the other a new auger. If you've cleaned the firepot and leveled the grill and it's still happening, that's the point to call Customer Care. Have your model and serial number ready, the same escalation path as Pit Boss's error code guidance.

Worth separating clearly: this isn't the same problem as an auger that won't turn at all. That symptom is almost always a moisture jam or a loose wire connection, a different mechanism with a different fix. See our guide to a jammed Pit Boss auger if that's actually what you're looking at.

Keeping the Firepot Clean

The cleaning-cadence habit above only works if your firepot actually gets vacuumed on schedule, and a household vacuum isn't built to handle warm ash safely. The PowerSmith PAVC101 is a dedicated ash vacuum. Owners on pellet-stove forums describe it doing the job of pulling ash out of a firepot.

Accounts of how often the filter needs attention genuinely diverge. Some clear it every use. Others go most of a year between cleanings, which is a wide range worth knowing before you assume yours needs constant attention. A clogged filter measurably cuts suction and makes the motor work harder, so somewhere on that spectrum is worth checking for your own use.

It's a real fix for one of Pit Boss's two named causes, not the other. A dedicated ash vacuum like the PAVC101 keeps the airflow path clear. It does nothing for a mechanical or electrical fault in the auger motor or control board. That's why the look-first habits above still matter even with a good ash vacuum in your garage: checking the firepot, and checking that the grill is level.