POWER LIGHT flashing, not status light...HELP

[Jabone]

Have been heating our home in Wisconsin with a Harman Accentra for about 5 years. Almost trouble free except for having to replace the control board about 2 years ago. That's the history. Must mention that I clean this stove every 3 weeks.

Yesterday the stove started to SURGE, and growl. It then stopped and the POWER LIGHT (Not the STATUS light) was blinking continuously. I un-plugged it and let it sit overnight. This morning I plugged it in. The POWER LIGHT was on but not flashing. Started it in AUTO mode. Worked fine for 1 hour and started surging and growling.....then shut off with the POWER LIGHT flashing. Did a complete cleaning and noticed exterior exhaust vent was about 70% restricted. I naturally cleaned it and vacuumed the entire pipe. Plugged it back in and tried to restart. The combustion blower runs for about 3 seconds then everything shuts down. AND THE POWER LIGHT starts flashing. Not a code, just flashing. I have tried to restart about 6 times. Same results.

I can not find a reference anywhere to a flashing POWER LIGHT.

Anyone have any ideas? The closest dealer can't make a service call for over 5 weeks. Thanks, Scott

 

[jackman]

Are you sure you have good power? I'd check the outlet with a voltmeter to be sure. If it's plugged into a surge suppressor or UPS remove them and see if that cures it.

 

[Jabone]

Thanks for the response. I just tested it again. 120V constant, wired correctly. I also removed the surge protector. Its been running on the same outlet since installed 5 years. Scott

 

[Montecarlossfan]

Since board has been replaced, and I assume is newer ,I wonder if something is wrong with the power or the power sense that would shut the stove down on a non sine wave ups. .. dip switch number 4 turned on would tell it to continue on non sine wave but I don’t see anywhere where a power light blinks , but the combustion blower pulsing is the behavior.
If this is what it’s doing, flip dip switch 4 on and see if that changes behavior....that will confirm a board malfunction of that circuit

 

[rickwai]

Plug ti nto a outlet in another room without a surge protector for troubleshooting purpose