Hello,
How do I turn the heating on for this thermostat? Whenever I put it to a higher temp it goes back t0 17 degree. How do I keep it at a higher temp? I tried usign the hold temp button but that's not working. Someone help please its too cold in this house:(

If this is your thermostat use the instructions enclosed. This was the only instructions I found that was close to your model number.

http://techlit.honeywell.com/techlit/Pdf/69-0000s/69-1638.pdf