Wonder if anyone can shed any light on this for me... Replaced a Drayton LP241 programmer with a LP722 (supposedly a straight swap??) and at the same time swapped a Drayton RTS1 room thermostat for a Honeywell DT90E digital Room 'stat. The only wiring alteration for either was to terminate the neutral at the room stat in a connector block as the new stat requires 2-wires rather than 3.
The problem is that since these have been replaced the hot water has stopped working (but the central heating has worked fine). The lights come on so it looks as though it should be working. Could it be a faulty programmer? Alternatively is there anything else I can check?
The problem is that since these have been replaced the hot water has stopped working (but the central heating has worked fine). The lights come on so it looks as though it should be working. Could it be a faulty programmer? Alternatively is there anything else I can check?