I have just fitted a DT90E thermostat to me system replacing a T6360B.
All is well, with the wiring as it had four wires bit I removed the earth and neutral to install the DT90E so only have live and switched live now.
My problem is that even though the timer I see off, I can turn on the heating system by increasing the temperature.
Can anyone explain why and tell me how to sort this please.?
All is well, with the wiring as it had four wires bit I removed the earth and neutral to install the DT90E so only have live and switched live now.
My problem is that even though the timer I see off, I can turn on the heating system by increasing the temperature.
Can anyone explain why and tell me how to sort this please.?