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My ferroli boiler keeps flashing f 37 no hot water and no heating.

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6ya6ya
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Posted on Jan 02, 2017

rockitman187
  • 2559 Answers

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

Please rate this solution.

Posted on Jan 17, 2009

  • 30 Answers

SOURCE: Vaillant combi boiler problem

when the tap is turned on and the water light on the boiler doesn't this means the diverter valve is not operating it could be down to low water pressure in the house this can be checked at the cold tap in the kitchen. if there is plenty of pressure then it could be the diagphram in the diverter valve is worn or split. the diagphram is only a few pounds but it depends on the engineer you get as to how much money he wants to fit it.
the egg timer symbol (or two pyramids together) is an ignition indicator turn off and on again to see if it will fire with the tap running. reset the boiler with the lower right hand control knob.

Posted on Mar 26, 2009

  • 9 Answers

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

Posted on May 04, 2010

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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 25 c heating won't come on


Did you ever find out what this was as I have the same problem??

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Fault code f26 ferroli optimax 25c how to reset


There is a parameter on the pcb to change would take 30seconds to do. Never replace ur pcb for these faults. Hold down reset untill u see t5 press reset 1 more time it will then say p01 press the heating temp button until u see p02 press the hot water temp button until it changes to numberv2 and that will fix ur problem

Dec 25, 2010 | Heating & Cooling

1 Answer

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

Dec 22, 2010 | Heating & Cooling

1 Answer

Ferroli boiler 31 che will not light up when hot water switched on notice in windowe says no ca or no co


are you getting no ca or no co on the time clock? if so change the time clock

May 16, 2010 | Heating & Cooling

1 Answer

Ferroli otc settings


this sounds like the boiler is in comfort mode press the eco/comfort button once and eco will be dispalyed on LCD. also check terminal 3 and 4 have no wires on the terminal strip as this is were the OTC is connected to boiler.

May 02, 2010 | Heating & Cooling

2 Answers

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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Ferroli boiler error code A3


boilers need a certain amount of water pressure to operate as specified--there may be a pressure regulator valve, allowing a certain amount of water to your boiler, and when water is drawn elsewhere, there may not be enough getting to the boiler---this is one possible solution, but there are easily 20 more, and that is where a trusted plumber is worth it's gold...very difficult to diagnose most plumbing problems without being onsite

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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

Please rate this solution.

Jan 16, 2009 | Heating & Cooling

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