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 thats not workin. 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