Can Someone Help. Recently moved into new house, It has a Gravity fed Hot Water and pumped central heating fitted. A Glow-worm floor standing boiler, The separate timer/programer wasnt working properly so I changed that to a Honeywell ST799 everything worked fine I then decided to fit a wireless Thermosat as the current position of the old wasn't right. So I bought a Drayton RF1 wireless Thermostat receiver kit.
Now my problem is that when I wired it up and started the system I blew the receiver as I may have wired it wrong, but I checked my wiring and am a bit lost as to why can sum one Help. I then wired in the old Mechanical Thermostat.
Yellow to terminal 1 .
Red to terminal three (No terminal two).
Blue to Terminal 4
And Earth to Earth. The system working fine
I wired the new one as such:
From my the Timer/Programer terminal three, to terminal one on thermostat, (Yellow)
Neutral terminal of my Timer/Programer to terminal two on the thermostat (Blue)
Terminal three of thermostat to to pump live as stated in instructions. (Red)
and I also wired in the earth. I don't now if it matters but this thermostat is double insulated, So what went wrong ? My friend said this thermostat was not suited for a gravity system, that why it blew.
