I asked an electrician that I’d employed to disconnect the central heating timer from the thermostat. The reason was that TWO Honeywell ST9100C programmers had stopped working after he wired it separately from the plumber installing the new central heating system. Therefore:
A. Is there some way that I can check that it is wired correctly as I don’t trust the electrician now after two have stopped working for no apparent reason. I asked him to check it and he said it was fine.
B. How do I reconnect the programmer to the thermostat, please? I’ve attached photos of how it is at the moment.
Thank-you in advance.
A. Is there some way that I can check that it is wired correctly as I don’t trust the electrician now after two have stopped working for no apparent reason. I asked him to check it and he said it was fine.
B. How do I reconnect the programmer to the thermostat, please? I’ve attached photos of how it is at the moment.
Thank-you in advance.