Replacing 3 Year Old Siemes Wireless Thermostat - Wiring Help Please Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[Bercik12]

I have a query to, I have the diabolicial Siemens Wireless Thermostat which has finally given up after a tumultuous three years!!

I bought a Horstmann DRT2 and obviously the wiring is totally different. In the Siemens I have the following cables:

White connected to LX
Black connected to L1
Brown connected to L
Blue connected to N

On the Horstmann DRT2, I only have COM, NO and NC

Any help of advice is most appreciated.

Thanks.