Low Temp Error on D2 WiFIRE Grills

What's in This Article?

What to do if your D2 WiFIRE-enabled Traeger pellet grill displays a Low Temp Error on the controller.

 

Symptoms

  • The grill's controller displays, "Low Temp Error."
  • If paired with the Traeger app, the app will also issue a push notification to the device. 
  • The grill's temperature will have fallen below 120ºF/48ºC for more than 10 minutes. During this time the grill will attempt to reignite.
  • The controller will trigger a cooldown/shutdown cycle.

Common Causes

A D2 WiFIRE grill produces a Low Temp Error when the grill's temperature goes below 120ºF/48ºC for more than 10 minutes. Lower temperatures can be the result of several factors:

  • Outdated firmware
  • Wet, old, or low-quality pellets
  • No pellets in the firepot (usually caused by running out of pellets mid-cook, an auger jam, or not priming the auger on a brand-new grill)
  • Too many pellets in the firepot
  • Poor air flow (usually as a result of lack of maintenance, ash and sawdust buildup, chimney height, or other blockers like loose drip tray liners or large pans)
  • Starting the grill with the lid open
  • Cold or windy weather
  • Component failure

What to Do

1. Assess the situation

Think about timing of the error, age of grill, amount of use, if other errors also appeared, etc. 

    • New grill, first time being used: Did you prime your auger before use?
    • Error occurred before reaching set temp: Too many pellets from improper shutdown; hot rod not heating; sawdust in auger tube; 
    • Error occurred after reaching temp (mid-cook): Pellets aren't reaching the firepot; high winds extinguishing fire; air flow being blocked
    • Other errors also occurred: Other errors can indicate other issues like an auger jam or a component not being connected
    • Cold or windy weather: High winds occasionally have impact on the grill's ability to maintain a fire; extremely cold weather can impact time to temp.
    • Correct startup procedure: The most common fix for a Low Temp Error is to restart your grill correctly.
      WiFIRE-enabled (or D2) grills need to be started and preheated with the lid closed. Failure to start the grill correctly can result in temperature irregularities throughout a cook. Follow these steps to ignite your D2 WiFIRE pellet grill correctly:
      1. Turn on your grill.
      2. Ensure your grill's lid is closed.
      3. Set the desired grill temperature.
      4. Press Ignite.

 

2. Check your grill's firmware

  1. Find the latest firmware version for your model at https://www.traeger.com/status.
  2. Find your own grill's firmware version and make sure it's on the latest version. 
  3. Leave your grill connected to WiFi and it should update automatically, if needed. 

3. Check Pellets

  1. Did the grill run out of pellets at any point?
    • If the grill ran out of pellets part way through a cook, there may have been a gap in the auger where no pellets reached the firepot for a period of time.
  2. Check pellet quality.
    Try checking pellets near the bottom of the hopper since those are the pellets closest to those that would be in the firepot.
  3. Check for and remove any excess sawdust at the bottom of the hopper. 
    • Pro Tip: When cleaning your grill, always empty your hopper and vacuum out any residual sawdust that has settled on the bottom so the sawdust doesn't make its way into the firepot.
  4. Check pellets in the firepot.
    1. Remove the grill grates, drip tray, and heat baffle, looking for possible air flow obstructions such as loose drip tray liners, large pans, and excessive ash and sawdust in the barrel.
    2. Check pellet quality and amount in the firepot. 
      • No pellets indicates a gap in the auger from running out of pellets, a blockage in the hopper preventing pellets from entering the auger (pellet clumps), or an auger jam.
      • Too many pellets indicates the fire likely got smothered or couldn't establish in the first place. Possible causes could be improper shutdown on the previous cook or the hot rod not heating.

4. Check Maintenance

An unmaintained grill can lead to difficulty getting a grill to the correct temperature. Ash buildup, particularly in the firepot, reduces the hotrod's ability to bring pellets to its smoking point efficiently.

We recommend cleaning your grill a minimum of every 20 hours of cooking, but we suggest cleaning it more often. Ash buildup will also affect the grill's ability to circulate heat efficiently, which will prevent the grill from being able to maintain the set temperature.

For more information on cleaning your pellet grill, see Cleaning & Maintaining a Pellet Grill.

5. Check Component Functionality

  1. If your grill has a chimney, make sure there is approximately a thumb's space between the chimney pipe and cap.
  2. With the grates, drip tray and heat baffle removed, plug in and ignite the grill. 
  3. As the grill ignites, check if the following components are working as designed:
    1. Auger: Should be turning, feeding pellets into the firepot.
    2. Induction Fan: Should be running. You should hear the fan's low hum, likely turning on and off. You can also feel for airflow coming from the firepot by hovering your hand over it, or you can remove your hopper's service panel and visually check if the fan is spinning.
    3. Hot Rod: Should should produce heat, which you can feel by hovering your hand over the firepot.

For any other questions or concerns feel free to reach out to Customer Support for more information.

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