Had stove for 5 years and never an issue other than a new ignitor. Have stove in automatic mode and either if Inlower the tempmof shut off completely the combustion blower stays on. Longer so far is 4 hours. Strange thing is the stove is ice cold to touch. If I open the glass door, within seconds it shuts off. Removed and cleaned the ESP probe and gave the stove including vent a complete cleaning. Think it may be the ESP? It is a black wire one.
Harman Advance combustion blower not shutting off
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Surprised no replies to this yet. Assuming your weather has been warmer than normal up there. Four hours does seem kinda long, however the ESP is looking for a specific temp to shut off the combustion blower ( believe it's 90 degs. ). The fact you open the door and it shuts off seems the probe is reading something. Maybe out of cal.. I find in warmer weather mine runs a long time before it shuts down to. If I need it to shut off quicker I open the door.
David M
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Four hours is way too long. I would definitely suspect the ESP, but it is odd that it shuts off when the door is open.
I'm having the same problem. Flame goes smaller but combustion blower stays on unless I open the door. Had this problem before but cleaning the ESP probe solved the problem. Then I have an electrical surge which blew the circuit board fuse which I replaced but now the stove will not shut off again. My repair man can't fix the problem and Harman says he needs a $500 meter which he can't justify. I ordered a replacement ESP probe and if that does not work I'll order a new circuit board. I'll keep you posted on my results and please post if you solve your problem.
You will need to wipe off the ESP probe, clean that area, OR replace the probe. Seen this to many times.
I know this is a little late but It took longer than I thought to solve the "no shut down problem". Rather than clean the ESP probe again I installed a new one but the stove still would not shut down. I finally found the Harmon Warranty Repair man in my area. Although my Accentra is over 8 years old the man did have a Harmon repair meter so I setup an appointment to install a new circuit board I had ordered. He checked the existing circuit board and although the meter did not find any problems he said the board was not working correctly and installed the new one which solved the problem. I did not install the new board myself because the Harmon meter is needed to adjust the board settings to my stove.
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