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Andrew Smith
Andrew Smith, Engineer
Category: UK Plumbing
Satisfied Customers: 3586
Experience:  Domestic Gas, Commercial Gas, LPG, Unvented Hot Water, Part P Electrical, Commercial Catering
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My Ariston micro genus HE28 is showing fault A97 Fumes

Customer Question

Hi there. My Ariston micro genus HE28 is showing fault A97 Fumes circuit logic error. Any advice?
Submitted: 9 months ago.
Category: UK Plumbing
Customer: replied 9 months ago.
First of all there was fault A77 (condensate Trap full of water) which I managed to clean. But now is showing the A97 fault-fumes circuit logic error
Expert:  Andrew Smith replied 9 months ago.

A strange one.

Try removing the connections to the condense trap and flue fan, clean them and retry.

If that does not work then turn off for at least 10 minutes at the fused spur and restart and see if it clears.

Customer: replied 9 months ago.
Ok, I managed to clear all faults. BUT the pressure is a bit higher than it probably should be.
So my question is How do I lower the pressure in the boiler? Thanks!
Expert:  Andrew Smith replied 9 months ago.

The easiest way is to bleed a radiator into a tub until you get to 1.5 bar

Expert:  Andrew Smith replied 9 months ago.

Let me know how you get on

Customer: replied 9 months ago.
Thank you Andrew. That worked just fine. All good and working now!
Expert:  Andrew Smith replied 9 months ago.

Excellent, well done.