Glowworm combi boiler pressure problem

[lucylooloo]

On my Glowowrm combi the pressure is on about 3 bar but still the 'low pressure' button is flashing. I can not run a hot bath and shower water fluctuates hot and cold. Scared to turn the heating on as don't want to ruin the boiler and it's minus 3!

Please help!

 

[gas4you]

What Glow Worm combi is it?

Sounds like there is some muck in the pressure sensing tube so the pcb can't 'see' the boiler pressure, or the pressure gauge is broken and stuck on 3.

I would advise to get an RGI in to check tomorrow and put some thermals on for tonight

 

[Slugbabydotcom]

I have seen this before on a glow worm combi.
Low water presssure sensor connection is blocked and needs cleaning.
When you get someone out to it ask them to fit a magnaclean