I have a 4 year old Harman Fireplace insert. Has ran great since we had it. Took it out for seasonal cleaning and when I fired it back up, status 3 light blink! Cleaned the prob..still 3 light blink. Bought the correct red wire ESP prob for it, still a 3 light blink! New ESP sensor tested, works great..reinstalled, still blinks! Checked all the wires and solder..good, vacuum switch, jumped and still got 3 blinks! Before I buy a board any help? Thanks!
Cold in RI
Cold in RI