Pro 780 is the larger D2 sibling of the Pro 575. Same rule: unplug first. Different rule: do not assume the 575 rod is the 780 rod. Traeger’s parts diagram for this serial is the length authority. We did not pin a 6-inch or 8-inch Amazon ASIN — those lengths were not verified as current Pro 780 OEM.
Ironwood / Timberline WiFIRE pots are another family again.
Symptoms
- Auger and fan run, pellets drop, nothing ignites after a full start.
- Open or short on a cool rod.
- Not the rod: empty hopper, ash cake, wet pellets, failed controller.
Procedure
- Unplug. Cool. Grate, tray, baffle out. Vacuum dead ash.
- Photograph protrusion and the connector. 780 access is the same idea as 575 with more barrel in the way — do not lever the pot weld.
- Disconnect. Back out the set screw. Slide the sheath out.
- Meter the cool rod. Blistered sheath: scrap even if it still reads ohms.
- New rod to the same depth. Clamp without crushing. Route leads off the pot.
- Reassemble. Plug in. Watch for glow on a start cycle.
Search Amazon (Patio, Lawn & Garden) and BBQGuys for Traeger Pro 780 hot rod. Compare photos to the part in your hand. Universal “fits all Traeger” AC rods are the wrong chapter.
See also: hot rod overview, repair versus replace.
Not affiliated with Traeger Pellet Grills LLC.