Hi guys, I installed a pb-105 for my uncle two years ago, it has been working well for that time. He called me a few days ago and said it had overheated, as in pegged the gauge at 260F
The relief valve blew off and he opened the door to allow the vacuum switch to stop the feeding process.
Well, I went over filled it back up, fired it up from a cold start, and disconnect all the loads to see what it would do when it approached high limit. It heated up to 180 (feed rate 4) and automatically slowed the feed rate to the equivelant of 1, and kept on going in "idle mode" feeding the pellets slowly. All this time it was in Auto mode. Shouldn't it have let the fire extinguish? I let it get to 210F before I connedted the loads back up and pulled the heeat from the unit. The auget light would go on and off, I tried turning the unit to the off position while it was in idle mode, the status light went out and the auger kept on going! I'm about to condem the board as this seems totally wrong.
The overheat light went on and off at random times during this whole thing as well, shouldn't it come on at something like 195? and stay on?
Any help or insite is greatly appreciated!
TS
![shock !!! !!!](/talk/styles/default/xenforo/smileys/shock.gif)
Well, I went over filled it back up, fired it up from a cold start, and disconnect all the loads to see what it would do when it approached high limit. It heated up to 180 (feed rate 4) and automatically slowed the feed rate to the equivelant of 1, and kept on going in "idle mode" feeding the pellets slowly. All this time it was in Auto mode. Shouldn't it have let the fire extinguish? I let it get to 210F before I connedted the loads back up and pulled the heeat from the unit. The auget light would go on and off, I tried turning the unit to the off position while it was in idle mode, the status light went out and the auger kept on going! I'm about to condem the board as this seems totally wrong.
The overheat light went on and off at random times during this whole thing as well, shouldn't it come on at something like 195? and stay on?
Any help or insite is greatly appreciated!
TS