I too am trying to change my Honeywell Dial Thermostat to the Meross MTS200. I followed the wiring as shown in the instructions, the Meross unit switches on and shows as controlling the heating, but the boiler doesn't actually fire.
I've set the original timer control unit to permanently on...
Thanks for the advice John.
The circuit is on the RCD-protected side of the main board from memory, I can check that when I'm home tonight. I was initially looking to extend the circuit in the garage as the current socket is at the 'wrong' end at the moment. But over the weekend the possibility...
I had a power feed to my detached garage installed when the house was rewired 9years ago. I currently only have one double socket and lights in the garage but want to add more sockets as well as an outdoor feed for a pond pump and in the future a hot tub. Do these changes need to be Part P...