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We have an ferroli optimax boiler and code F37?

Can you please help we have looked at the instruction book and we brought water pressure back to 1.5 bar all came on okay but now f37 again and water pressure 0?

Derek green
March 2008
FerroliHeating, Home Heating SystemsFerroli Boiler Code Help
i have the same fault - f37. how do i raise the pressure? cant see any valves under the boiler...
Help!!

Lisa-M
February 2010
My boiler has low pressure. I have been told the the frost stat and the room stat or boiler stat wires were in the opposite places. can this cause the lowering of the boiler pressure?. I have been experiencing extreme temperature from my radiators. Please advice Pat.

Patrick
August 2009
The F37 is because the water pressure is too low.
Cheak for leaks, and also if you are getting water passing through the 3bar relief valve.

Maybe a faulty sensor either, but more likely the former

T
March 2008

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