A pellet grill that will not heat up is almost always one of five things.
Fuel, auger, igniter, temp probe, or airflow. This guide walks you through the checks in order of likelihood, and lists the replacement parts you can order same-day from Amazon.
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In this guide (jump ahead)
Most likely causes (in order)
- Empty hopper or pellet jam — Grill fires briefly then dies, or never fires at all.
- Wet or dusty pellets — Weak flame, temperature swings, excessive white smoke.
- Failed igniter — Auger runs but no ignition, no orange glow when starting.
- Dirty temperature probe — Reported temp does not match actual temp (verify with second thermometer).
- Blocked airflow — Excessive smoke, cannot reach set temperature, sooty firepot.
Check 1: Fuel (hopper and pellets)
Confirm hopper has enough pellets and they are dry. Pellets absorb moisture from the air within 24-72 hours if left in an open hopper – wet pellets are the #1 cause of heating problems.
- Empty the hopper completely.
- Inspect pellets – they should be firm, uniform, and smell fresh. Discard any that crumble.
- Refill with fresh pellets from a sealed bag.
- Try starting again.
Replacement parts and tools that fix this:
- Traeger Pellet Storage Bucket with Gamma Seal Lid — Sealed pellet storage prevents moisture damage.
- Traeger Signature Blend Pellets 20 lb — Fresh pellet replacement.
- Bear Mountain BBQ Pellets Variety Pack — Pellet variety pack.
Check 2: Auger (clear a jam)
Wet pellets swell and jam the auger. If pellets in the hopper are dry but the grill still will not heat, the auger tube itself may have a wet-pellet clog.
- Unplug the grill.
- Remove the hopper pellets.
- Use a shop vacuum to clear the hopper AND the auger tube.
- Manually rotate the auger by hand (if accessible) to confirm no jam.
- Reassemble and restart.
Replacement parts and tools that fix this:
- Shop-Vac 5-Gallon Wet/Dry Vacuum — Clears hopper and auger of wet pellet dust.
- Traeger Auger Motor Replacement — Replacement auger if motor failed.
Check 3: Igniter (the hot rod)
The igniter (also called a hot rod) is a heating element that lights the pellets. It should glow orange within 30-60 seconds of startup. Igniters typically last 2-4 years.
- Start the grill and look into the firepot within the first minute.
- You should see the igniter glow orange.
- If no glow: igniter is failed and needs replacement.
- Order the exact part number for your grill model.
Replacement parts and tools that fix this:
- Traeger Hot Rod Igniter Replacement — Traeger-compatible igniter.
- Pit Boss Hot Rod Igniter Replacement — Pit Boss compatible igniter.
- Universal Pellet Grill Hot Rod Igniter — Universal-fit igniter.
Check 4: Temperature probe (the RTD)
The RTD (resistance temperature detector) probe tells the grill what temperature it is at. If dirty or failed, the grill under- or over-fuels the fire.
- Cool the grill and remove the RTD probe.
- Wipe with a damp cloth to remove soot.
- If still bad readings: replace the RTD.
- Verify with an independent grate-level thermometer.
Replacement parts and tools that fix this:
- Traeger RTD Temperature Probe Replacement — Replacement RTD probe.
- ThermoPro TP20 Wireless Dual-Probe Thermometer — Independent thermometer to verify grate temp.
Check 5: Airflow (clean the firepot and grease tray)
Ash buildup in the firepot or a grease-clogged flame diffuser starves the fire of oxygen. A deep clean every 5-10 cooks prevents this.
- Cool the grill completely.
- Remove grates, heat baffle/diffuser, and drip tray.
- Shop-vac the firepot and inside of the barrel until clean.
- Wipe or replace the drip tray liner.
- Reassemble and test.
Replacement parts and tools that fix this:
- Traeger Drip Tray Liner 5-Pack — Drip tray liners for easy cleanup.
- Weiman Grill Cleaner Spray — Food-safe degreaser for interior.
- GRILLART Bristle-Free Grill Brush — Grate cleaning without wire bristles.
Frequently asked questions
How were these products selected?
Research-based synthesis of specs, brand reputation, current Amazon reviews, and category trends. Use it to narrow options before you buy.
What price range should I expect?
Prices vary across categories. Amazon pricing changes frequently, so confirm current numbers on the product listings.
Should I always buy the most expensive option?
Not necessarily. Premium products offer better materials and longer warranties, but mid-tier picks meet most needs.
How often is this guide updated?
Refreshed as new products launch. Amazon pricing and stock change daily – always confirm current price on Amazon before purchase.
Where is the best place to buy?
Amazon is linked throughout for broad selection, current pricing, and standardized returns. Manufacturer sites also work.
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