Hi there members
I am looking for a little help replacing an old Satchwell TLX2259 with a Timeguard TRT033. I thought it would be a straight swap but being a total novice I am finding it a tad tricky. Using a testing screwdriver I found that the yellow gave me a constant live, the red was live when the thermostat switched on and the blue held no current. So based on that I wired the yellow to the COM terminal, the red to the red to the NC and the blue to the NO, this resulted in the boiler not firing when the new thermostat called for heat then when I switched the red to NO and the blue to NC this resulted in the boiler firing constantly even when not called for....any help is very much appreciated. Thanks
I am looking for a little help replacing an old Satchwell TLX2259 with a Timeguard TRT033. I thought it would be a straight swap but being a total novice I am finding it a tad tricky. Using a testing screwdriver I found that the yellow gave me a constant live, the red was live when the thermostat switched on and the blue held no current. So based on that I wired the yellow to the COM terminal, the red to the red to the NC and the blue to the NO, this resulted in the boiler not firing when the new thermostat called for heat then when I switched the red to NO and the blue to NC this resulted in the boiler firing constantly even when not called for....any help is very much appreciated. Thanks