Heres one for you:
I bought three thermostat kits which are great but of these and one isn’t working for me.
At the moment I am getting 1.21 volts at the + / - input.
All boards seem to be wired up the same and he solders all seem ok.
I ave replaced c3 and c4, the relay, zd1 and the trimmer but still getting 1.21 volts rather than the expected 12v.
Anyone any advice on what to check for.
Thanks