So 4 years ago I upgraded to the 3 knob control board for a Harman P38. lately It's been having weird issues at first I thought it was an ESP probe issue because I got a 3 blink fault. I replace the ESP probe, and it was still acting up butt was running OK. Yesterday the stove was in the off position cold for 36 hrs it randomly turned the auger distribution and combustion blowers on and would not turn off until I unplugged it. now getting a 3 blink again.
I install the new ESP look probe. No luck. Install the red ESP probe flip dip switch number 5. No luck.
Is there any way to diagnose the board without replacing it?
Also, if I have to replace the board, can I use A P43 board and leave it in manual Ignition mode?.
Thank you for any possible help
I install the new ESP look probe. No luck. Install the red ESP probe flip dip switch number 5. No luck.
Is there any way to diagnose the board without replacing it?
Also, if I have to replace the board, can I use A P43 board and leave it in manual Ignition mode?.
Thank you for any possible help
![[Hearth.com] Harmon p38 control board failure. Need help](/talk/data/attachments/331/331649-97a8278664b057b90cd885f11f28d2e2.jpg?hash=3-xYPYxqsG)
![[Hearth.com] Harmon p38 control board failure. Need help](/talk/data/attachments/331/331650-b78944f5a116e6b93623eb70e0eb1a6e.jpg?hash=FEl9GmBlpK)
![[Hearth.com] Harmon p38 control board failure. Need help](/talk/data/attachments/331/331651-73a49125ab850b4f9ed5d2c6409dc670.jpg?hash=4Xo8znmlo4)
