New to the site but have been nosing around here for a couple of years on and off to cleaning tips etc. I have a Harman Accentra that quit working out of the blue. I would have called the company that we purchased the stove through for assitance but they are no longer in business. One morning the stove was off when we got up. I had only burned 15-20 bags of pellets in it before this happened. I cleaned the stove thinking maybe it was due to a change in pellets but that was not the case. I going through the wiring diagram of the stove it was determined that we lost power post pressure switch. I purchased a new one and guess what, nothing changed. In reading through some posts on here and the troubleshooting section it sounds like pressure switches do not normally fail. If I apply some suction via a piece of vac hose to the switch all it well and the stove works fine. I cleaned the filter in the hopper and made sure the hose from the filter to hopper did not have anything clogging it. I also looked at the hopper seal and it is intact and seems to seal well. The door seal also appears to be just fine. I did check the low draft voltage set screw and it is turned up to the highest setting. The stove is vented through the roof in our sunroom and is using room air for combustion. Yesterday afternoon for the heck of it I got up on the roof and pulled the chimney cap just to see if a bird had possibly tried making a nest in there and the pipe is clear of any obstructions. Anyone got any ideas? Thanks!