Just had my central heating system drained by a plumber. I got two radiators replaced. He then "filled" the system again and bled radaitors.
After he left I decided to try it out. After switching on heating system, 20mins later or so the pump next to the water tank in the cupboard started to make a clicking noise, like an football rattle. There was no heat in the radiators at all. I tried "bleeding" the pump with the big screw in the middle. It is boiling hot water that came out.
The hot water doesn't heat up either.
I had no noise with pump or trouble at all before today.
After he left I decided to try it out. After switching on heating system, 20mins later or so the pump next to the water tank in the cupboard started to make a clicking noise, like an football rattle. There was no heat in the radiators at all. I tried "bleeding" the pump with the big screw in the middle. It is boiling hot water that came out.
The hot water doesn't heat up either.
I had no noise with pump or trouble at all before today.