Harman p35i 2-blink error

[chefanne]

Hi All,
I have a p35i, 2 seasons old. Had the annual clean done and went to use it recently and am getting a 2-blink error? I have done everything I can think of except gone up on the roof... any thoughts.. thanks!

 

[Montecarlossfan]

2 Blink is an issue with the vac switch not sensing a draft. Either the switch is faulty or something has come unplugged. Worst case is what you are thinking in terms of a clogged flue. ....Is the combustion motor working etc.

Check hose to the vac switch, make sure hopper seal is good and door seal as well. Vac Switch can be tested if there is continuity under slight vac as well.

That's in the area I would start... Something is causing this stove not to pull adequate draft or sense adequate draft

 

[johneh]

Something is causing this stove not to pull adequate draft or sense adequate draft

Ash build up and Harding over summer at the nipple to the stove
Remove hose at vac switch and blow toward stove reinstall and start the stove
as a test