I have a Potterton Suprima 80, which has of yesterday not firing up for the call for HW from the programmer.
The zone valves (Honeywell V4043H) as a complete unit were replaced a couple of weeks back and were functioning as expected when tested with both the HW and CH circuits.
When calling for CH it fires up and runs correctly but when the HW is calling sits with the orange light as in standby mode.
Ive forced the zone valve open and the water pumps with a green flashing light but then stops and returns to the orange light after approx one minute...
Any thoughts otherwise its going to be another cold shower in the morning !!!
The zone valves (Honeywell V4043H) as a complete unit were replaced a couple of weeks back and were functioning as expected when tested with both the HW and CH circuits.
When calling for CH it fires up and runs correctly but when the HW is calling sits with the orange light as in standby mode.
Ive forced the zone valve open and the water pumps with a green flashing light but then stops and returns to the orange light after approx one minute...
Any thoughts otherwise its going to be another cold shower in the morning !!!