Recent content by AlexS47

Hi, I what to change my thermostat... the old one was a potterton prt100 st and the new one is a salus rt500. At the potterton prt100 st I have 3 wires : Blue is in 4 - N Red is in 2 - H Yellow is in 1 - TL At Salus rt500 I have L and SL no N. Can you please tell my what wire goes in L and...