Some radiators not working !??

[Jazz12]

aibu to think it’s the fcuking boiler??

4 radiators in the house (all furthest from the boiler) have stopped working. These were working fine until a few days ago.

1. the pipes under them are cold
2. turning off all other radiators isn’t helping
3. no trapped air, we bled all of them.
4. a couple of radiators are working even after turning them off (using tuning thing at the bottom)

Anything else I can try before I call someone ? Could it be the boiler? Frozen pipes? (They are all on the outside wall) I’m surprised 4 radiators stopped working at the same time?!

Jazz12. I really hope this problem gets sorted quickly & hopefully not too expensive. It been great thinking of how to help even everything wasn’t done. Good luck

Earlier in te thread I read this from the @Jazz12 There are 2 two-port valves in the cupboard upstairs near a small red cylinder attached to one of the copper pipes. The two port valves were recently replaced,

This indicates to me that the boiler is pressurised on the primary side that supplies the hot water from the boiler to feed the hot water cylinder (from which the water that is heated in the tank is fed from as a flow and expansion tank in the roof) Is there a small pressure gauge adjacent to the red cylinder or in the boiler access flap? What is the pressure shown?

You do realise this was a year ago?