Central Heating Question

Boiler has no pressure!

I have a Ferroli Optimax 25 S boiler which is showing error 37 (incorrect system water pressure). I bled some radiators the other day and the boiler stopped working and i have no idea how to bring the pressure back up! and its freezing! any ideas?

2 Answers

You must have lost some water the other day after bleeding the rad's - hence the loss of pressure.
You need to re-pressurise the system ie add some water. there should be a filling loop on your boiler, possibly underneath if it's a wall mounted boiler. There should be a number of valves under there - look for one that is not in line with the pipe, but at 90 degrees to it - turn this until you hear water running - whilst doing this keep an eye on your boiler pressure, take it up to 1 bar ( if that's what your boiler runs at) that should do the trick.
I would just like to point out I'm not a plumber ( but do have some experience of this type of problem)
Hope this helps!

J Chappell Joinery & Renovation

Answered 6th Nov 2012

J Chappell Joinery

Member since 30 Jul 2008

you should have a filler loop underneath or filler tap turn this until the pressure gete to 1.5 and turn off

Answered 7th Nov 2012

jd kent

Member since 14 Jun 2008

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