Will a Hole in the Flue Pipe cause pressure switch to stick open?

Dairon421

Hey guys so I'm working on a Locknivar boiler Cwn0645pm(model). The inducer and hoses are fine and I replaced the pressure switch and still no action.  So I inspected the venting and saw a big gap. Don't have the materials to fix it but will that be a reason why the switch not working completing the circuit?(Also I'm not getting correct W.C to switch)

EdTheHeaterMan

I don't believe the pressure switch would be affected by that opening. I do believe that opening could allow carbon monoxide to enter the living space.

Don't operate that boiler until you get the vent repaired.

Mr.Ed

PS. Your annual maintenance and inspection service should have identified that 2 years ago. That did not happen in the last few months.

EdTheHeaterMan

I assumed you are the business or homeowner because as a professional, you would not attempt to repair the pressure switch with a defective venting system. You would know better.

pecmsg

damn

thats not a hole. 

That’s a canyon. 

Shut it down 

bucksnort

duct tape

EBEBRATT-Ed

I agree with "not safe to run"

Is this a fan assisted flue?

ratio

Judging by the corrosion on the flue pipe, I'd be looking for a hole in the HX that's keeping the pressure switch from making.

It's likely quite dangerous, a 'kill the whole family' kind of thing. Shut it down until it can be thoroughly checked.