Worcester Bosch Oil Heatslave 20/25?

The wiring fault is unlikely to recur. However, if in future you bleed the system after getting an airlock, the pump may fail to run, and overheat and squeal with air, then cut out. At the rear right, their is a screwdriver friendly valve, which replaces the water that bleeding removes. Just take the top cover off.

Rob
January 2014

where can i get a programmer for my worcester heatslave 20/25 boiler

Penny
May 2010

How is it wired, is in a wiring centre, programmer or directly into the boiler controls. Is it S or Y plan? Check for a loose wire and 240v as and when it should be.

It will be a simple thing just have to find it.

Iain
July 2008

Thank you very much for the reply. It was what you said, and all is now working fine once more
Merry Christmas
Peter

Peter Hewitt
December 2007

check the three port valve to make sure its opening. It makes a limit switch at the end of its travel which brings the pump on?

TP
December 2007