Weil-McLain CGa-4 SPDN boiler - taking a shot here

[Hamberg]

Anyone have troubleshooting expiernece with this boiler? Pilot will not stay lit. (GVD-5) vent damper is vibrating and does not appear to be actuating but I can't find any trouble shooting info to bypass and confirm it is the damper.

Open for suggestions...

 

[Geofd]

If you just type gvd-5 there is a lot of info also tells you how to bypass

 

[Hamberg]

If you just type gvd-5 there is a lot of info also tells you how to bypass

Found a trouble shooting chart on the manufactures site, ran down the list and it was in fact a bad damper. (side note: those damper are pricey little buggers - $200 bucks with the harness!!)

 

[Geofd]

In the end the end you found it and repaired yourself, that's a good deal!!!!!!!!