Another boiler question F5 error on Glow worm 18si

IanL · 17-10-2012 07:53PM #1

Hi everyone, wondering if somebody might be able to help me with this? Our glow worm 18si is showing an F5 error message. It starts to boot up, but the pilot light doesn't come on and the error message then flashes. I had a look on the Internet and apparently this is caused by a temperature overheat and requires the temperature reset button to be pressed. I've taken off the covers but can't find anything that looks like a temp reset button. Can anyone help?

IanL · 17-10-2012 08:01PM

Super-fast update! Found a schematic on t'internet and was able to identify the correct part from there. Hurrah

pixbyjohn · 17-10-2012 08:39PM

This might help

Marcais wrote: »

UPDATE: Charlesland survives.

If anyone gets an F5 error. Reset the thermostat switch!

1. Turn off power switch.

2. remove left and right screws from white bottom front panel of boiler with a flat head screwdriver and lift panel up and off.

3. Remove next silver panel by removing screws.

4. Remove smaller silver panel if needs be. (i.e. you may be able to get to the button without removing this)

5. You are looking for a thermostat reset button. It is on a pipe on the right hand sight, very well hidden about the centre of the boiler.

6. I managed to press the wee nipple on the reset button with a phase tester and it worked. ps. I did this with the boiler on, but not recommended!

ps. I call Durkans foreman who told me that ther was nothing he could do because I am here over a year and I shoudl have had the boiler serviced. Very helpful! I think he was the same one who mocked someone when they referred to advise from an electrician posted on the boards. I've found the boards much more helpful than Durkans sadly!

Annasopra · 17-10-2012 10:52PM

Is your piping above the boiler ok? Ours was faulty for 5 bloody years and we never knew. Could have died from carbon monoxide poisoning

IanL · 18-10-2012 01:33PM

Yeah piping is ok, have a yearly bord gais service, was just after fitting new washing machine hadn't turned water mains back on so boiler trippes but fixed now thankfully!

Annasopra · 19-10-2012 07:50PM

Moved to DIY forum

Another boiler question F5 error on Glow worm 18si

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