leaking combi boiler


Postby stevep44 » Wed Feb 03, 2010 8:09 pm

I have a main 24 he combi boiler which has a leak. the water appears to be travelling passed the fan then floods the burner & eventually blows the pcb ( i have already replaced 2 pcb's ), anyone got any clues why this maybe happening, it's really annoying, cheers.
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Postby Steve the gas » Sat Feb 06, 2010 6:05 am

2 PCBs 'cos water and leccy don't get on well, get the leak sorted.
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Postby htg engineer » Sat Feb 06, 2010 1:16 pm

Repair the leak - lol


The fan is at the top of the boiler, above any water connections, so it is rain water ? or is there an overflow above the flue (outside) that could be leaking - running down the wall and in the flue ?


Vertical or horizontal flue ?


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Postby stevep44 » Sun Feb 07, 2010 9:34 am

[quote="htg engineer"]Repair the leak - lol


The fan is at the top of the boiler, above any water connections, so it is rain water ? or is there an overflow above the flue (outside) that could be leaking - running down the wall and in the flue ?


Vertical or horizontal flue ?


it's a horizontal flue, i think the water maybe coming from the secondary heat exchanger (think that's what it's called) which is connected to the fan.
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Postby DEEARR2 » Sun Feb 07, 2010 6:30 pm

There is a possibility that this may be condensate. Check the condensate flow path is clear through the boiler leading to the trap.
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Postby gisago » Mon Feb 22, 2010 9:04 pm

Is it sorted yet? You need to get the flue seals checked. If condense is leaking from inner flue into outer flue (air intake) and into boiler it may be a bad or damaged seal, wouldnt be the first time.
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