Control board failure on Pleasant Hearth pellet stove?

[GregP507]

After 10 years of operating a Pleasant Hearth ph50cabps, it appeared to be dead. There were no indications of anything working at all. I purchased a new control board, swapped it in, and all seems well.

Upon inspection of the old board, the 5-amp slo-blo fuse on the board had failed. There was a ball of solder in the middle of the glass tube which leads me to suspect that the fuse may have failed on its own, and not from a fault in the board. The board has an MOV which shunts excess voltage spikes to ground through the fuse. On our stove, auger-jamming has been a frequent occurrence, happening sometimes weekly, depending on the brand of pellets. Each time it happens, the shear-pin breaks and has to be replaced. This has happened dozens of times, and each time, I'm sure there is a small voltage spike just before the pin breaks. I gather that the cumulative effect of all those spikes has caused the slo-blo fuse to eventually fail.

I intend to replace the fuse and keep the old board as a spare, in case the other board fails. If it doesn't work, I guess it's back to electric space heaters until we get it working.

 

[physicswhiz]

I am having a similar issue. My stove just lost power one day. I checked all of the connections, the power to the stoves, even the fuse. The fuse appears to be intact. But while I was handling the board, something connected and gave power to the blower motors, but there is no power to the auger motor or ignitor.

This is my first time working on a pellet stove, but I am thinking it is a control board issue. Problem is, I can't find a control board anywhere. Do you know where you got yours from if I can't find any other issues?

Thanks.

 

[johneh]

They have new and refurbed boards

Pleasant Hearth Parts | Control Circuit Boards, Switches

Pleasant Hearth Pellet Stove Replacement Parts. Control Circuit Boards, Safety Sensors, High Limit Switch, Vacuum Pressure Switch, Vacuum Switch Tubing.

pellethead.com

 

[physicswhiz]

They have new and refurbed boards

Pleasant Hearth Parts | Control Circuit Boards, Switches

Pleasant Hearth Pellet Stove Replacement Parts. Control Circuit Boards, Safety Sensors, High Limit Switch, Vacuum Pressure Switch, Vacuum Switch Tubing.

pellethead.com

Out of stock on both thanks for the info though.