I've got a Worcester Greenstar boiler. The pressure dropped to zero and when I try to refill it, the water just gushes out of the pressure relief pipe. How do I reset the pressure relief valve so it is in the closed position?

John Higgon, January 2011

The pressure valve is an important safety device - do not cap the discharge pipe.

You can reset the valve by means of a short red plastic lever that is attached to the body of the valve.

Get under the boiler. The pressure valve is to the far right hand side of the boiler (as you face it), about six inches above the row of five inlet / outlet copper pipes. When the valve is tripped, the lever is turned through 90 degrees and points down. Push it back up with a screwdriver or similar. Fill the system to normal operating pressure and get a loved one to check that the water is no longer gushing out of the discharge pipe on the outside of the house.

If you have continuing problems with it, get a plumber to check it.

botcher, January 2011

I have the same problem, as of yesterday evening. If you get an anser please let me know

linda, January 2011