Sometime last night it looks like my central heating failed......I'm assuming after I had bled some of the radiators. There was air/gas in a couple of radiators which started to flow but the very last radiator would not flow. Tghought I'd leave it till next day to check again.
After realising it was getting a bit cold later on I checked the boiler (Glowworm 30hxi) and it had an F5 error. I reset the overheat thermostat and then reset the boiler and it fired up but was reaching maximum temperature in about 30 seconds and shutting off again.
Left it overnight to see if it would fire up OK in the morning but it still has the same overheating problem.
Have checked at the tank upstairs and the pump (Grundfos Selectric) is very hot to the touch and took the silver screw cap off but no air or water coming out (not sure if thats the right thing to check though). Also there is no pressure to the Pressure/Expansion vessel.
So at the moment I'm not sure if this is a boiler or the pump or something else entirely causing the problem. Just wanted to see what other steps I can take to check for the problem before calling out a CH engineer.
Any help appreciated.
Edit : I'd turned the immersion on 30 mins agao and now there is water dripping from some kind of overflow next to the tank upstairs (its got an open bit so you can see the water dripping down)
After realising it was getting a bit cold later on I checked the boiler (Glowworm 30hxi) and it had an F5 error. I reset the overheat thermostat and then reset the boiler and it fired up but was reaching maximum temperature in about 30 seconds and shutting off again.
Left it overnight to see if it would fire up OK in the morning but it still has the same overheating problem.
Have checked at the tank upstairs and the pump (Grundfos Selectric) is very hot to the touch and took the silver screw cap off but no air or water coming out (not sure if thats the right thing to check though). Also there is no pressure to the Pressure/Expansion vessel.
So at the moment I'm not sure if this is a boiler or the pump or something else entirely causing the problem. Just wanted to see what other steps I can take to check for the problem before calling out a CH engineer.
Any help appreciated.
Edit : I'd turned the immersion on 30 mins agao and now there is water dripping from some kind of overflow next to the tank upstairs (its got an open bit so you can see the water dripping down)