How to mend ... F4 Fault Boiler

F4 fault showing on my Glow worm 30cxi boiler?

F4 fault showing on my Glow worm 30cxi boiler. When I turn the system off and back on again it resolves until ... [Read more]

18sxi F1 F4 fault?

Hi, My boiler has been shutting down as the pressure will rise well above 1bar or go to low. This then shows ... [Read more]

glow worm flexicom hx f4 fault code?

boiler wont fire up and is showing f4 code even after pressing reset button. Is there anything i can do to fix... [Read more]

glowworm sxi30 - F4 fault?

the boiler shuts down often with F4 fault. its simple to power down and then back up to restore operation. but... [Read more]

What is the F4 fault on Glowworm Flexicom 18HX ?

Our Glowworm Flexicom 18 HX gas boiler is not working-F4 is dissplayed, have tried to reset it, but but still ... [Read more]

f4 ironsation fault on boiler ?

still waiting on reply woman with two kids has no water or heating kids under 5 landlord cant come out till mo... [Read more]

GlowWorm 24ci boiler high pressure fault?

With the boiler left on, i.e. no demand for DHW or CH, the pressure will remain constant, set at 1.0 bar. Whe... [Read more]

Glow worm 30CXI combination boiler showing fault code F1 and F4? ?

Glow worm 30CXI combination boiler showing fault code F1 and F4? My boiler is showing fault code F1 - F4 so t... [Read more]

fault on glowworm 18hxi?

just moved in to this house.boiler keeps coming up f4. no manual left by last owners

Glow worm 30CXI combination boiler showing fault code F1 and F4?

My boiler is showing fault code F1 - F4 so there is no hot water and no heating. Please can you tell me wha... [Read more]

F4 problem with Vitodens 100 system boiler 24kw?

Code F4 fault. Boiler not firing. Have replaced ignition transformer code 063 but still not working, believe ... [Read more]

bubbling boiler glowworm 24hx?

new installation fault 22 and fault f4 keep coming up.all rads heat no problem but when boiler reaches 62 degr... [Read more]

Glow-worm 18hxi flashing f4?

cooking on my gas cooker and when the boiler attempts to fire my gas hob goes out and have the fault f4 flashi... [Read more]

How can i sort out an f4 fault on glow worm 18hxi ?

BOILER KEEPS CUTTING OUT AND SHOWING F4 ON THE PANEL CAN I FIX IT ?

Fault F4 ?

I have a Glow worm 30CXI boiler that keeps coming up with a fault of F4? Any idea's

What is an F4 fault on a 24CXI GLow worm combi boiler? ?

Hi please please can someone help. The combi boiler we have flashed an F4 code, since then we have had no heat... [Read more]

Ionisation problem on Heatline Solaris boiler, code F4?

We have a 2 year old Heatline bolier which has come up with the fault F4, an ionisation problem causing the bo... [Read more]

what is an F4 fault on my Saunier Duval boiler?

My Saanier Duval has a persistant F4 fault occuring and clears when I swith of the power for 20 seconds

What is Fault F4 on Glowworm 30ci Boiler?

My mothers Glowworn 30ci Boiler stopped working the other day. There was a red light flashing and the fault co... [Read more]

CI 24 GLOW WORM BOILER. NO HOT WATER KEEPS SAYIN F1 OR F4 AND SHUTTIN OFF ?

OBVIOUSLTY A FAULT BUT FOR WHAT ANYONE KNOW