1. turn off power to tmax sip timer.
2. hold the start button
3.apply power to timer
4. release start button.
5. push on up arrow to get to room number.
6. push/release start button
7. hold up and down buttons timer will show 0
if should now communicate with ccs4
call me if you have any more problems
3104181519
www.socaltechnicians.com