Harman P68

was the status light blinking at all?

i would lean more towards the ESP. You have unit on surge suppressor?

honestly, without a diagnostic tool attached, I can only guess that its the ESP probe giving a bad reading to the board, and the board assuming the stove is at an operating temp, and doing what it thinks is appropriate. DOes the igniter light come on if you put the stove into room or stove temp?

does the igniter get hot?

the ESP is required for pretty much everything. Its the only thing in the machine that measures the temperature. it tells the fans when to turn on/off, when to tell the auger to feed...everything. If you unplug the ESP, you should get a 3 blink status light error, you could do this, just to make sure the board is at least communicating with the probe.

be curious what the ESP reading on a DDM would be.....I think the "magic" number for a bad, room temperature ESP is around 452 degrees or so......when it should be 70

curious indeed. I've sen the 400+ many times...saw a 700+ last year. those micro-farads can be sneaky.

basically, watch the status light and see how many blinks you are getting when this is happening....maybe try a manual reset as well (unplug, count to 5, plug back in)

you'd have to disconnect it at the control board. unplug it first.

well, the lesser expensive thing to do is replace the ESP probe. Unfortunately there isn't anything else you can do to diagnose the problem. It is either teh ESP, the Board, or both....sadly, even my powers have limits . These type-o things are often the result of funky power issue...power spike, power glitch, lightning strike kinda things....do get a surge suppressor to insulate you from future attacks of the stove gnomes. If you have friend/dealer local with Harman Diagostic tool..is an easy problem to root out.

should be in stock for any dealer IMO. you can use dealer locator on Harman web site to find closest dealers, i'm not really sure who is close to you.

It might not meet your definition of local, but Stove Keepers in Brookline, NH stocks plenty of Harman parts and they are open 7 days a week.

most dealers will stock parts, especially the ESP......cant imagine a dealer who services stoves NOT having that part, in fact......

3 blink now? as might have been said above, 3 blink is almost always the ESP.....make sure you get the right one, and when you do get the probe, ensure that the switch #5 on the circuitboard corresponds to that probe (ON=red wire probe, OFF=black wire probe)......they are different, and the wrong setting will result in your stove faulting out.......

as an aside, sounds to me like someone has replaced your ESP in the past. That crimp connector with the yellow push thingy in it was only available on replacement ESP probes (black wire only) for awhile.....it allowed the user to not have to cut wire ties, but what was found out was that it didn't always work....sometimes the splice wasn't good, sometimes the user didn't crimp it enough, etc......its no longer available and hasn't been for a year or two. That being said, Im hoping your switch 5 is set to OFF, since in all likelihood you have a black wire (analog) probe

if you check the resistance on the red wire probe while it warms up, you'll see the resistance rise, whereas, with the black wire probe, it falls