Boiler problems

stupot101

Hi, hoping someone can help with this.

Got into the shower this morning - no hot water.

I have a Worcester standard boiler, ie not a combi. I hit +1 on the programmer for hot water and there was a loud gushing sound of running water in the boiler, and the same from the pipes around the hot water tank. This died down after 10 minutes but you can still hear a dripping sound. The boiler is running but isn't heating water or heating the radiators when I turn the heating on at the programmer. The pressure in the system had gone quite low so I topped it up, but it hasn't helped.

Any ideas what this could be?

Myser

Does the pressure keep dropping after topping up? The gushing sound was probably the Pressure Relief Valve (PRV) opening.

stupot101

The pressure will drop from time to time. It always has since I bought the house four years ago. The pressure will also come back up by itself sometimes.

But since I topped it up this morning it seems to be holding its pressure.

Myser

Since the gushing sound could also be heard from the hot water tank too, you may have an airlock somewhere.

Have you tried venting the system - bleeding air from the radiators and any other air vents e.g. near the hot water tank? If the system pump is accessible, you can also try bleeding air from that too. There should be a large slotted screw on the front. Have a towel/rag ready!

If you keep filling a system with water without adding inhibitor, one of the symptoms will be an increase in hydrogen gas as a result of corrosion of the radiators.

Mr_Ted

;)You've pushed air all round the system inadvertently by switching it on and it now needs a full venting, which must be done with the pump off and repressuring as air is released, BEFORE switching the system/pump back on:)