I have a Potterton Suprima boiler and a Potterton EP2002 programmer.
Currently the central heating will not work.
Water heating is working correctly.
When switching on the central heating from the programmer, the LED on the programmer comes on but the thermostat led (which is in the hall doesn't come on). Recently I noticed that the LED on the thermostat wasn't always coming on, but after a few tries it would light up and the central heating would come on.
I can get the central heating to work by selecting hot water on the programmer then manually overiding the valve in the airing cupboard.(slider on bottom)
Any ideas in what could be wrong.
P.S
There are 2 relays in the programmer, when I select water I can here it clicking but when I select central heating there's no noise.
Currently the central heating will not work.
Water heating is working correctly.
When switching on the central heating from the programmer, the LED on the programmer comes on but the thermostat led (which is in the hall doesn't come on). Recently I noticed that the LED on the thermostat wasn't always coming on, but after a few tries it would light up and the central heating would come on.
I can get the central heating to work by selecting hot water on the programmer then manually overiding the valve in the airing cupboard.(slider on bottom)
Any ideas in what could be wrong.
P.S
There are 2 relays in the programmer, when I select water I can here it clicking but when I select central heating there's no noise.