Hi
I am replacing a 20 year old honeywell room stat with a sunvic TLX7501.
The honywell is wired as follows
Red = 1 this is live 240v
Blue = 2
Yellow = 3
I did a staight swap on the wires ie 1 to 1, 2 to 2, etc but it dosen't work we set the new stat to 35c to call for heating boiler did not fire after 15 mins.
after reading the posts on here i see the sunvic is volt free so how do i connect it? do i disconnect the red or what? i am confused. we tried swapping the wires around but it went pop and the fuse to the boiler circuit and the main breaker blew, reset breaker changed fuse put the old stat back on and everything worked so no damage to the system.
i may have blown the sunvic stat but i'm not sure. i just need to know which wire to connect where, if the sunvic doesn't work i will get a new one.
can any one help? please.
Tony
I am replacing a 20 year old honeywell room stat with a sunvic TLX7501.
The honywell is wired as follows
Red = 1 this is live 240v
Blue = 2
Yellow = 3
I did a staight swap on the wires ie 1 to 1, 2 to 2, etc but it dosen't work we set the new stat to 35c to call for heating boiler did not fire after 15 mins.
after reading the posts on here i see the sunvic is volt free so how do i connect it? do i disconnect the red or what? i am confused. we tried swapping the wires around but it went pop and the fuse to the boiler circuit and the main breaker blew, reset breaker changed fuse put the old stat back on and everything worked so no damage to the system.
i may have blown the sunvic stat but i'm not sure. i just need to know which wire to connect where, if the sunvic doesn't work i will get a new one.
can any one help? please.
Tony