We purchased our wood pellet grill (Model TFB57CLB) from Costco in August 2017. It came with one bag of the gourmet blend pellets. We used the Traeger cookbook to try a few different recipes in the fall. Most of these involve a period of smoking followed by a period of grilling. The grill seemed to work fine at first. We used it a couple of times on warmer days in the winter and it had some trouble getting up to the desired heat level. We started using it regularly again in April 2018. I was careful to clean it and check the pellets etc. The smoking feature seemed to work alright, but when I would turn the heat up for grilling, the grill would usually struggle to get much over 225. I would resort to turning it up to 375 or more just to get it to 225 and then often it would sink back down to 180 or 160. I went to the troubleshooting guide on the manufacturer's website and checked all the components, which seemed to be working fine.
I purchased a Traeger Elite Grill from the website. I use the grill one time and it worked fine. A couple of weeks later we fired up the grill to cook some steaks. Approximately 10 minutes into cooking the auger stopped working. We had to finish our meal cooking it on the stove. I looked at the troubleshooting guide and the steps needed to be taken. To determine what was wrong you basically needed to dismantle the electric box and auger housing. I am not an electrician Nor a mechanic and feel this is excessive for a consumer to have to do.
In smoke mode the controller is no longer controlled by the thermometer, it merely switches the pellet feeding auger on and off. On time is 15 seconds, off time ranges from 45 seconds at P0, to 165 seconds at P15. Temp and smoke are controlled by the duration of off time: the auger always runs at the same speed. More smoke is produced at higher P settings and lower temp settings because longer off times allow the pellets to smolder. At P0 in smoke mode or "High" in cook mode the auger replenishes the pellets at a faster rate, creating more flame, less smoke.