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Mend Ariston ACO 32 MFFI Boiler Heating Error

Ariston E34 Problem - Desperate!!!!?

Hello all

We have an Ariston ACO 32 MFFI and it has been nothing but a problem since day one (now 6 years old). We now constantly get the E34 error code and the boiler makes a very worrying grumbling sound.
Had the air pressure switch replaced first 2 weeks ago - lasted hours then E34 problem returned! Now had the fan renewed last week. Lasted a day and the E34 came back on loud as ever!
What else could be the cause of this ongoing problem?
Thanks all in advance.

Mick
December 2011
AristonAriston ACO 32 MFFIHeating, Home Heating SystemsBoiler Heating Error
Had this problem today. Error e34 making very loud noise when fan kicked in. Turned out to be a simple problem of condensate blocked at bottom of combustion chamber. Carefully took front off with water Hoover as quite a bit of water had built up. Drained and cleared blockage and now boiler runs fine. Hope this helps

Tom
May 2012
Hi Mick did you get problem sorted I am aregistered gas engineer and have the same problem, I have changed air pressure switch and PCB but i am still having the problem I was putting it down to the fan but dont want to buy 1 after seeing your post. Cheers Scott

Scott Irving
February 2012

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