i have a glow worm 30cxi boiler, today i drained the system to renew a radiator, i refilled the system and vented, turned on the boiler everything seemed fine for two hours, but when i tried to get any hot water the boiler failed and gave me a flashing F5 fault, can anyone help me with this as we do not have any an instruction manual.

robert clarke, November 2007

I have glow worm 30 cxi boiler
The red flashing code is 03 Can anyone tell me what this means please

David, February 2016

Peter Davies, October 2015

Robert ur help was great I have heating again Thankyou x

Lennie, October 2014

I have a f14 fault on a glow worm cxi. first it was a f5 but reset a senor now gone to a f14 any idears what to do next thanks

greg, February 2014

intermittent hot water! but heating ok....

ali, February 2014

ive got a fault on my boiler the heating is working but can get hot water

tom, February 2014

biggest load of crap ever, british gas have replaced everything and still no hot water to bath, and the dam thing has a mind of its own, just keeps on heating rads even when no programme running

steve w, January 2013

Yeah call a qualified professional.

Qualified professional, October 2012

f12 comes up when boiler is switched on how do I fix this any ideas , no heating or water

bill fr, February 2012

I have glowworm 30hxi fault code 25 replaced sensors, pump, and power flushed. it was ok for few months. now experiencing the code 25. can anyone help with the problem

nmz, January 2012

Used Jo Bournes answer to the F5 fault and the reset switch worked a treat. Thanks SO much for this - saved us some money. Why doesn't it tell you do that in the manual???

Sam, March 2011

we have a gloworm 30cxi.........biggest load of scrap metal ever,soon as temp drops it packs in, it has been rebuilt by BG at least 4 times, great during summer,in cold times we get intermittent hot water, selective radiatos warming up, i have bled radiators, bled system, drained system , flushed system, never cured it, looking for new boiler
gloworm are no help either

steve w, December 2010

I also have a glow worm 30cxi boiler and my heating has gone down! I still have hot water but rads wont come on, any ideas please :(

sam, September 2010

The F14 fault error I received was down to a blocked Heat Exchange plate. I had to get this replaced and it then worked fine. However 15 months down the line its playing up again with the same problems. Shocking boiler (new system lasted 15 months orginally until first error). I'm now in the market for a new boiler as this is the second time the heat exchange plate needs replacing in 3 years!

M Goodall, May 2010

I have a Glow worm 30cxi and after 5 years of service it started to give trouble with the f14 fault and intermitant hot water. I have it insured with "Homeserve" who sent a service man to fix it; he fitted a cartridge diverter We thought all was well as we had hot water for 3/4 of an hour! I rang Homeserve who sent the service man out on the monday; he fitted a plate to plate heat exchanger now the boiler is fixed; thank goodness for insurance!

librero 46, April 2010

Please if you are going to do any of these repairs please please please do the following TURN OFF THE ELECTRIC SUPPLY TO THE BOILER.

Also by taking off the cover of the boiler white or silver you have commited a criminal offence unless you are gas safe registered. Please seek an engineer to carry out any repairs to a central heating system.

Thanks

Louise, January 2010

i have a 30 cxi combi boiler and have a hot water bath tap that no longer runs although others ok how do I repair it

j, December 2009

The manual can be found at pdfdatabase.com/index.
This is a good site for all kinds of manuals

Joe, November 2009

Richard,
According to the manual the description of an F14 fault is Central heating flow temperature is greater than 95 degrees C. The possible causes are System fault, possible pump failure, check Thermistor on flow.
Hope this helps and I would advise getting a copy of the manual.

Steve, November 2009

What is a F14 ? ON THE 30CXI

richard, September 2009

what is f 14

matthew, August 2009

Have moved and have no manual for my glow worm 30cxi and living on my own find it difficult to operate. I have tried the recommended webb site which you said for a manual but it appeared unavailable. Could you please tell me how |I can get a manual. I have needed to bleed my radiators and now I am getting a flashing light and they dont work. Many thanks. gastonjennifer@aol.com

Jenny, July 2008

Robert

I've had a very similar issue and think that I might have the answer for you...

F5 fault code ... if you've been adding rads to system or similar, then chances are you have introduced air into the boiler, which causes the thermistor to click off.

You need to take off the front panel (2 retaining screws underneath) and lift off. Then take off silver panel (remove retaining screws again). Top left hand side of innner workings of boiler is the overheat thermostat/reset switch. Two black plastic prongs sticking up with red button inbetween. Press down on red button - it should click. You have reset system.

Now restart boiler - turn central heating water temperature control dial (on LHS) to 0. Turn mains reset switch (RHS) to ON (1) position. Green light should come on and then go off. SYstem pressure should show on digital display. SHould read at least 0.7 bar.

Turn central heating dial (LHS) ON. The lighting sequence will begin, lamp will go green to show boiler has lit and you should be able to see the flame through the peep hole. Display should show system temp now rather than pressure.

Put the silver plate back on and then the front cover!

The manual can be found for 12/15/18/24/30/38hxi on the following web site: http://www.high-efficiency.info/images/hxi%20install.pdf

hope this helps

Jo Bourne, November 2007

F5 is a overheat fault,
do you want a manual,

barry, November 2007