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Ferroli f24 overheats

Ferroli F24 blew expansion vessel which was replaced. There was not apparent blockage and the boiler is running heating fine but randomly it either overheats (and has to be turned off) or stops and restarts even when there is call for heat. Could it be a board problem such as a relay or sensor?

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Posted on Jan 02, 2017

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mrhotandcold
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SOURCE: Vaillant boiler no heating or hot water

refere to manual check for override switch loss of pressure no problem re-pressurise and check for leak top of rad valve good place to start

Posted on Oct 11, 2009

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peterrance19
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SOURCE: How do I clean the injectors on a Ferroli gnk

hi if u go to the ferroli webb page u can down load a user manual

Posted on Mar 06, 2010

  • 2 Answers

SOURCE: Dirty injectors on a Saturday morning in an isolated village

WHEN YOU NEED CLEAN I NEJECTER YOU MAY BE CLEANA ONCE DRUM IN WATER+ HCL CIRCULET 15MIN
AFTER CIRCULATE CLEAN WATER
ALSO CIRCULAT WATER+ EDTA+ SMBS POWDER
YOUR INJECTER WILL 80 % PER CLEAN

Posted on Mar 06, 2010

  • 20 Answers

SOURCE: 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

Posted on Mar 14, 2010

garypetterss
  • 15 Answers

SOURCE: 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

Posted on Apr 11, 2010

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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

Apr 06, 2010 | Water Heaters

1 Answer

Dirty injectors on a Saturday morning in an isolated village


WHEN YOU NEED CLEAN I NEJECTER YOU MAY BE CLEANA ONCE DRUM IN WATER+ HCL CIRCULET 15MIN
AFTER CIRCULATE CLEAN WATER
ALSO CIRCULAT WATER+ EDTA+ SMBS POWDER
YOUR INJECTER WILL 80 % PER CLEAN

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2 Answers

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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Vaillant boiler no heating or hot water


refere to manual check for override switch loss of pressure no problem re-pressurise and check for leak top of rad valve good place to start

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