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Ariston boiler fault

Ariston microgenus 24 he mffi error e34

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Posted on Jan 02, 2017

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SOURCE: Ariston Gas Boiler error code E02 what is the

i belive you have a ariston microgenus 2,from memory thats the fault code for low water presure,you need to re-presurise to 1 bar

Posted on Jan 17, 2010

  • 1 Answer

SOURCE: HI,

FINALLY MANAGER TO FIX THIS PROBLEM FAULT E34. Turn the boiler off, unscrew the flue where it meets the boiler, take out metal ring marked 43mm. this is an installation fault not a fault with the boiler. The 43mm ring is only supposed to be fitted where the flue is longer than 2 or 3 feet, short flues don't need it. Also I have just emptied condensate trap at the bottom of the unit on the left hand side. BOILER IS RUNNING FINE FOR A WEEK NOW. NO MORE ERROR E34.

Posted on Sep 22, 2011

  • 4125 Answers

SOURCE: Sorry Terry - I'm not used to this site! Question was - anyone know what the error message E34 means on an Ariston Boiler MicroGenus 24HE please?

The information I have found states it is a problem with the pressure switch. A faulty pressure switch will prevent ignition from occurring. Here is a Youtube video link showing the issue. Reading the comments below may assist you in isolating your problem. Hope this helps!


Ariston microGENUS 24 HE MFFI Error 34

Posted on Oct 21, 2015

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1 Answer

Sorry Terry - I'm not used to this site! Question was - anyone know what the error message E34 means on an Ariston Boiler MicroGenus 24HE please?


The information I have found states it is a problem with the pressure switch. A faulty pressure switch will prevent ignition from occurring. Here is a Youtube video link showing the issue. Reading the comments below may assist you in isolating your problem. Hope this helps!


Ariston microGENUS 24 HE MFFI Error 34

Oct 21, 2015 | Washing Machines

1 Answer

What could be the likely problem with a ariston microgenus 23 mffi boiler when there is no spark present for HW or CH fan runs for approximately 1minute then fume led comes on air pressure switch, pcb,...


Paul, is the exhaust vent blocked by any bird's nests or by any other type of obstruction?

Have you changed any of the vent pipes that would change the configuration beyond its maximum values, causing the system to shut-off into fail-safe?

Does the exhaust/vent fan cycle on?

Does the flame failure LED illuminate?

Have you checked your room thermostat, by checking its continuity with a multimeter?

Have you checked and tested the gas valve?

You may have lime scale build-up in the secondary heat exchanger which may have an adverse affect on the flow rate, once again, causing the system to shut-off into fail safe mode.

You may also need to check the main circuit flow switch...

Jul 10, 2014 | Heating & Cooling

1 Answer

What does error codes e34 and d65 mean on ariston boilers


You need to service the boiler and more likely to remove the restriction ring in flue, as only serving not always work or work only for short period, as boiler get older it is struggle to move exhaust gases out from burning chamber so it need good clean for fan, heat exchange , and there is restriction ring just befor L bow which need to remove so gases can flow better.

Jan 16, 2012 | Water Heaters

1 Answer

Ariston microgenus he24 fault is e34 but boiler works when front cover is removed


e34 on a ariston is the fan. Boiler fires up with cover off as its getting the air it needs from atmosphere! fan is not running at full speed

Nov 04, 2011 | Combi Centre DX - Mango

1 Answer

Ariston Micro Genus Boiler 24 MFFI. Getting fault R03 but it wont reset. Replaced safety theromostat and still same fault.


I've had to replace control pad on several steam units with similar problems.contact mftr and talk to tech support it may have warranty on pad.

Jun 09, 2011 | Plumbing

1 Answer

Ariston Gas Boiler error code E02 what is the problem. No other boiler specification on the type of boiler.


i belive you have a ariston microgenus 2,from memory thats the fault code for low water presure,you need to re-presurise to 1 bar

Nov 27, 2009 | Ariston Technologies AWD 121

1 Answer

Ariston ACO MFFI 35 E34 fault code present


This is the manual for your boiler. I hope the information contained in the manual will help you identify your problem.

http://www.ariston.co.uk/uploads/doc47e92b04013d8.pdf

Mar 30, 2009 | Water Heaters

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