On Sat, 17 Sep 2005 19:40:15 +0100, Ed Sirett wrote:

Probably the thermostat is getting tired and does not click on and off
sharply. This is probably a precursor to the thermostat failing entirely
so you might as well replace it.

How do these new-fangled boilers light the gas?
Mine has a pilot light but presumably the "economy" type have to use high
voltage spark ignition - would be a good transmitter.

Geo