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Anonymous Posted on Sep 29, 2011

I have a Ferroli Optimax HE 31C boiler. I have no hot water the error code is F34

5 Related Answers

Anonymous

  • 2559 Answers
  • Posted on Jan 17, 2009

SOURCE: ferroli optimax 31c

Here is a link to the manual.It shows fault codes.
http://www.ferroli.co.uk/Product_Documentation/Domestic/Optimax_HE_31_C_Manual.pdf

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Anonymous

  • 1 Answer
  • Posted on Nov 08, 2009

SOURCE: ferroli optimax HE 31C boiler

Setting time is not in manual that we received, however, we did get a separate sheet: Buttons top left-right are A - Clock adjustment B - Operating Mode selecting C - Override Buttons bottom left-right are: D - - E - Programmes F - +
To set clock: 1 - Push A 2 - When the DAY and the CLOCK icons on the LCD are flashing use + and - (D and F). You should set the day of the week (1 = Monday, 7 = Sunday). To confirm the day press A. 3 - The HOUR and CLOCK are flashing use + and -. Confirm with A. 4 - MINUTES and CLOCK are flashing use + and -. Confirm with A.
My LCD is not working correctly, so I have to press the screen gently to see what icons are displaying. Annoying.

Anonymous

  • 9 Answers
  • Posted on May 04, 2010

SOURCE: fault code ( nocn ) on a ferroli boiler

if nocn is on the time clock then check the wiring to time clock and if all good then it is the time clock at fault and will need repleacing

Anonymous

  • 9 Answers
  • Posted on May 04, 2010

SOURCE: I have just tried to run my ferroli optimax 31c

D2 is not a fault what that means is delay and 2 refers to CH which means the boiler has gone into standby mode. you need to check that your CH circut is open, there is a filter on the return valve into boiler make sure this is not blocked. If this is blocked the water is just going though the boiler by-pass so then the boiler thinks its up to temp. hope this helps

Anonymous

  • 1 Answer
  • Posted on May 10, 2010

SOURCE: problem with heating on ferroli optimax 31c

Take the front cover off by lifting and unhooking. look in the manual to locate the diverter valve. Tap the diverter valve softly with scredriver or something you can get to it with, it should free it it from sticking. This has worked for me twice. Try the boiler before replacing the cover. Make sure you turn the boiler off at the mains before touching anything whilst the cover is removed.

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F34 fault on myferroli domicondens HE26 c

Unknown if this link will help you fix it.

https://www.boilerguide.co.uk/manufacturers/ferroli/error-codes

Quoting from link: F34 Supply voltage under 170V - electric mains error
Jan 04, 2020 • Ovens
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Ferroli boiler optimax he 38 c.Powers up ok,no hot water,no error code.Think its an ignition problem.Heating flame not showing?????

Is there an error code? If not the flow sensor for the hot water could be faulty. Also if you've had a power cut depending which model of Optimax HE you have, you sometimes have to tell the boiler it's a Combi, as they have a generic Pcb fitted which is also used on the system only boilers.
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Ferroli optimax he 31c. brand new system will only heat 3 of 8 rads. boiler on 90c will only burn for 15sec then D2 shows and it cuts out. Why??

it is either your pump is not running or blocked [ debris from installation ect ] or your diverter valve is stuck partially open allowing a little water to pass into the heating system [ usually first rads on system ] it runs for a short while and cuts out because your overheat stat is kicking in because of poor circulation [ it is only running around the primarys in the boiler where it quickly reaches the over heat limit ] temp tends to rise approx 1 deg per second a clear indication of circulation problems.
solution GET RID OF THE FERROLI
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Hi i have a ferroli optimax 31c , hot water works but my heating dont ,it comes on the the heat temp raises to its highiest then cuts of saying A3 AND D2 can you help please

hi had same problem engineer came out and the diverter valve was cloged up sorted it and recomended a system flush plus install a magnet clean whitch picks up debri be 4 it gets 2 the boiler.
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Why does my Ferroli HE31C keep switching off code A3.

Here you go, page 30, sounds like it's overheating, possibly a problem with the boiler stat or lack of circulation in the system. http://www.ferroli.co.uk/Product_Documentation/Domestic/Optimax_HE_31_C_Manual.pdf
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I have just tried to run my ferroli optimax 31c boiler. The boiler fires up, but then displays a d2 message and the radiators do not heat up. Any ideas what causes this problem and how I can solve it...

D2 is not a fault what that means is delay and 2 refers to CH which means the boiler has gone into standby mode. you need to check that your CH circut is open, there is a filter on the return valve into boiler make sure this is not blocked. If this is blocked the water is just going though the boiler by-pass so then the boiler thinks its up to temp. hope this helps
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Problem with heating on ferroli optimax 31c

d2 is the code symbol for delay after central heating. and is not a fault code.. however if this is coming on then stopping the operation of the boiler then it usually points to a sticking diverter valve.
21helpful
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Ferroli optimax 31c

Here is a link to the manual.It shows fault codes.
http://www.ferroli.co.uk/Product_Documentation/Domestic/Optimax_HE_31_C_Manual.pdf

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