Air flow levels within the pellet stove is another key factor that could cause pellets not to feed. Quadrafire pellet stoves use a vacuum switch to sense if there is sufficient combustion air flow. Normally, the vacuum switch will close sending power to the auger motor, which starts feeding pellets.Click to see full answer. Simply so, why are my pellets not dropping?If your Harman Stove has stopped feeding pellets, there could be a few simple solutions: The front door, ash pan door or hopper lid may not be closed properly. Fill the hopper and allow a few minutes for the unit to auger the pellets onto the burn pot. Venting may be blocked.Similarly, what causes a pellet stove to go out? Because fire requires air, pellet stoves require a combustion blower to feed air into the system. A faulty combustion blower might be the cause of low flames not staying lit. If the clean-out is clogged with soot, the stove can’t breathe properly, which can lead to problems keeping the stove lit on the lowest setting. Also question is, why does my pellet stove auger keeps jamming? Also what appears to be a auger jamming issue can be caused by the vacuum switch opening preventing a full load of pellets from being delivered to the fire. Usually there is enough torque to breakup pellets unless the auger and the motor are not solidly coupled together.How do you troubleshoot a pellet stove? Troubleshooting Your Pellet Burning Issues Thoroughly clean and inspect hopper, auger plate, and switches. Inspect and clean auger, auger motor, combustion blower, and convection blower, and repair as necessary. Inspect all seals throughout the unit. Thoroughly clean out exhaust pipes and venting to the outside air.