Vokera pro combi 120HE only fires if disconnect air pressure switch

[Andrew Mellish]

Hi,

I have a pro combi 120he. when i try to turn it on, it tries to fire, fan starts but flames burners don't ignite....unless I disconnect the top rubber hose from the fan to the air pressure switch.
I have tried changing the PCb and the air pressure switch, but neither have made a difference.

any ideas?

I acknowledge that the boiler shouldn;t be running without the APS connected, so we have elec heaters on the go.
any advice welcome.

 

[Rickster123]

This plumbing forum will not provide advice to anybody with regards to boiler repairs or any other form of gas plumbing without you first providing us with your Gas Safe Registration number in a thread - for very obvious reasons. If you're not qualified to touch gas, you should stay well clear of trying to!

 

[Dotty]

STOP MESSING ABOUT WITH IT! YOU DON'T KNOW WHAT YOU'RE DOING!

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