Vaillant VCW 242 E fumes ducts and problems

[claudioernesto]

I am in need of a very professional suggestions about small failure of my old but still in good shape Vaillant VCW 242 E.

Recently I made the usual cleaning of the combustion chamber and replace the horizontal , fumes pipe.

All is connected accordingly the several Vaillant instruction , the problem is , that heater is working properly ONLY with the pressure switch with the pipe disconnected , pressure switch has been checked with tester and it works . Any idea where should I check to replace the small problem my heater has ?

I have another question front looking with open chamber top left , there is first pressure switch suction connection , second the second switch connection , than there is an open hole of approx. 12 mm that is free….should I close it ?


Thanks for any instruction you would like to send me



Read more: https://www.diynot.com/diy/conversa...-failure-of-fumes-system.33065/#ixzz4xy6AGjVy

 

[claudioernesto]

anyone could help me today I also replace the oring of the hood where the fan is fitted...But nothing change , all is running but when I insert the silicon pipe into the pressure siwtch connection on bolier back ...it stop

 

[DP]

Stop messing about with it, get a pro who knows this boiler, to attend and fix.

 

[claudioernesto]

ok sorry for messing ....to get a pro , yes but they will be available around 20 th November

 

[AGAS]

FFS's , wait for the 20th november

 

[claudioernesto]

 

[Dan Robinson]

Is it April already?