Ravenheat White Star 24T - LS 80T

[nigel2477]

I hope someone can help me with this problem i have,

calling for CH or DHW the pump runs / fan runs / then goes to lock out.

initial thoughts air pressure switch if i blow/suck the the aps, Burner comes on. Next swapped aps for a couple of aps,s i had on me not ravenheat ones but still no joy.

any ideas

Cheers

 

[kevplumb]

fan venturi

 

[nigel2477]

Sorry should have said,
Cleaned venturi its only a brass tube near the flue which i checked all ok.
thanks for the fast reply

 

[ajy]

try increasing minimum gas pressure by 1/2 to 1 mbar on dhw mode

 

[malc2]

you need a rubber ring that comes with the flue on this type of boiler they supplyed the wrong size ring if its from B&Q you need the size 72 or 75 mm one i had the same trouble called ravenheat out guy asked what boiler it was b4 he even went to look at it told him he laughted fetched the ring hy prestoo no more shutting down