Scratching my head on a Harman PC45....

[StirnPanzer]

Afternoon Gents,

I'm currently working on a PC45, and it has got me scratching my head. If there are any Harman guys out there I could use some help. What I have going on is a shut down after about 15 minutes and throw a 6 error code. I know that indicates a low ESP temp, and I have verified the temp with a DDM, but what has got me confused is that the dip switch settings that are currently on the board literally do not match up to any Harman stove. When I do set the board to what is indicated to be the correct setting for the board, it seems to run worse. The stove is clean, and the ESP is clean as that is the first thing that I did when the customer brought the stove in for repair. The board is very possibly the original board, and it is not compatible with the red ESP. I do have the correct ESP ordered. Is there something I am missing? What reason would there be to have the dip switches set to what they are, as in nowhere close to factory settings? Is there anything else other then the ESP or control board that could be causing this? At the present time, I'm reasonably sure that the ESP has failed, but I am not totally convinced yet.

 

[jzm2cc]

Try hand feeding pellets after stove lights and before fire starts getting smaller, i.e, keep fire going strong to see if esp registers and control board ramps up auger feed time to keep stove running beyond where it has been dying. If so set the first 3 DIP switches for a maximum initial auger feed. If this allows for pellets to fall off firepot, try dialing to next lower feed time. PC45's need a hot and longer duration initial fire to get auger feed times up enough to maintain continuous burning. A very sluggish stove compared to other wood pellet burning Harmans.

 

[StirnPanzer]

Thanks for the reply. I did end up replacing the ESP and the stove is running like a sewing machine. I found it really odd for the switches to be where they were set, but if it's working fine I'm going to leave well enough alone.