On the covered Traeger AC pellet grill, HEr means the grill temperature went above 550°F (287°C), usually from a grease fire or flare-up, so the controller shut the grill off as a safety measure. First, turn off and unplug the grill, and wait for it to cool if it is still hot.
Try in this order
0 of 2 completedWhat to do first
ReversibleTurn off and unplug the grill, and wait for it to cool if it is still hot.
Correct only the documented fault domain
ReversibleRestarting usually clears it, but Traeger has you first check for the causes it lists: clean the grill thoroughly after a grease fire, follow the correct startup and shutdown steps (excess pellets left in the firepot can all ignite together), check that the drip tray and heat baffle are installed correctly and undamaged, and check that the RTD is undamaged and not touching another part. If there was no fire, run a short preheat and watch for erratic temperature jumps; then disconnect and reconnect the RTD at the controller. If HEr appears before the grill reaches 550°F, or the temperature jumps around, Traeger says to contact Customer Support.
Evidence ledger
Sources behind this answer
Exact questions
Common questions about “Traeger AC pellet grill showing HEr”
What does HEr mean on a Traeger AC pellet grill?+
The grill temperature went above 550°F (287°C), usually from a grease fire or flare-up, so the controller shut the grill off as a safety measure.