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  1. A

    Vaillant 630 System Boiler, Ariston cylinder and Vaillant 470f Controller Issues :(

    Hi, A few months ago I had a new central heating system put in. I purchased the following: - Vaillant ecoTEC Plus 630 System Boiler - Ariston cylinder - Honeywell ST9400C - Vaillant 470f Wireless Weather Compensator Controller I already had builders doing other work in my house and they...
    • anil.bhatia
    • Thread
    • ariston boiler cylinder system vaillant
    • Replies: 10
    • Forum: Boilers
  2. B

    Ariston e33/e34

    Hi guys new to this. Got a e33 code and then sometimes e34. Then boiler fires and runs fine, then decides when I put a demand on to play up. Doesn't really know what it wants! I've tested air pressure switch, checked all hoses, checked flue clear, had fan out and checked air way is clear. All...
  3. M

    Faulty Ariston Micro Genus 24HE

    Hello, Im a new member to the forum, I am a Gas Safe registered business. Ive been called out to an Ariston Microgenus 24HE Combi, it displays an A97 fault code on both hot water or heating demand. The code in the book just says "electronic monitoring" Not much help. I did have the boiler fired...
  4. M

    Ariston UK

    Sorry if it has come up before, just been reading through the gas safe mag on pg17 and saw the name of the MD of Ariston. Poor bloke! Mustafa Findik!
  5. A

    Ariston E-Combi

    Fitted one of these a few years back, cust. text to say boiler has locked out with the 90 degree light on. Cant see any fault finding section in the MI's, anyone know what this points to, hopefully something that can be sorted over the phone!! Lol
  6. S

    Ariston MicroGenus 27mffi

    Got the above boiler with a hot water issue, it's runs for about 5 mins ok then turns off runs cold then fires up again. Does ths over and over any ideas? Could it be dirafram in diverter valve nackard as the flow / return pipe gets hot as well or could it be the diverter valve nackard? cheers
  7. P

    ariston he 30 problems with pressure

    I have a ariston class he 30 boiler approx. 18months old. The pressure on the boiler keeps going up, today it has been 3.5 bar. I have released water from a radiator to bring the pressure back down but it comes back up. I have turned off both taps that fill up the tank, but it still goes up...
  8. P

    Replacing a faulty pressure gauge on an ariston microgenus MFFI 27

    Hi, Can anyone tell me if its possible to replace the gauge without removing the pump? Just seems super tight for me to get behind it... Should be a fairly simple job right? Cheers
  9. G

    Ariston microgenus 23 mffi

    No hot water but central heating works Would i be correct in starting by changing dhw diaphragm Cheers guys
  10. J

    Ariston 24 mffi

    I have been out to an Ariston 24 MFFI today with an intermitent fault A05 fault code according to the home owner. typical it didnt fault when I was there but one thing I noticed is that the boiler constantly sparks even though the burner is lit. has anyone got any ideas maybe PCB or detection...
  11. G

    Ariston hybred condense boiler, 32kw

    air pressure switch wont make?
    • GUSMAN
    • Thread
    • ariston boiler
    • Replies: 1
    • Forum: Boilers
  12. M

    help with a troublesome ariston

    I have been having some issues with a microgenus 24he. Been giving a A77 fault code intermittently, every time I go there it is fine and all the problems relating to A77 test ok. Condense clear, sensor on the recuperator giving the correct resistance. Continuity on the leads from the sensor ok...
  13. D

    Ariston microgenius 24 mffi

    Went to a repair this morning on an ariston microgenius 24mffi, E34 error code showing, the cust had hot water only for a few seconds before the boiler cut out and the heating was only working at a low temp. I suspected sludge/debris in the heat exchanger and plate heat exchanger. I had replaced...
  14. E

    Ariston microgenus he28 mffi

    My brother has a Ariston microgem he28,(9 year old). He has this problem,no error code shows,but when heat is required either water or ch the boiler fires up (flame can be seen in boiler), when water is on it gets to about 30-40 deg, then flame goes out, after about 20-30secs fires back up again...
  15. D

    Ariston microgenius 24 mffi

    Went to a repair this morning on an ariston microgenius 24mffi, E34 error code showing, the cust had hot water only for a few seconds before the boiler cut out and the heating was only working at a low temp. I suspected sludge/debris in the heat exchanger and plate heat exchanger. I had replaced...
  16. M

    Ariston Genus

    Been out to an Ariston Genus 24 combi today. No hot water butcentral heating working normally, pin in the divertor valve is free and motor works when heating fires up. turning on a hot tap makes no difference to the boiler. Im leaning towards the flow switch but wondered if anyone had come...
  17. P

    Ariston 210 STI Indirect Cylinder thermal cut off

    Hi guys I'm havin a problem with this cylinder, not dealt with these for a long time, what's the best way to check the thermal cut off device in these?
  18. T

    Ariston Microgenus - repair or replace?

    Hi guys We had a complete CH installed in our 3 bed mid-terrace (8 rads) in 2002 including this boiler (don't know if it's a 23 or 27, it's not obvious) and it's mostly been ok - had an engineer out on average every 2 years to fix problems (mostly manifesting in cold weather when the red light...
  19. U

    Ariston Microgenus 23 MFFI - radiators not heating up although DHW OK

    I'm new to this forum, apologies in advance for not specifying or referring to plumbing terms correctly ! I've got an Ariston Microgenus 23 MFFI gas combi boiler. Over the last couple of days it's developed a fault. Fault - when I try and turn my heating on (by setting the room thermostat to...
  20. M

    Service needed for Ariston Genus 27 - Bournemouth

    Looking for someone familliar with Genus 27.
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