Honeywell T8611 Owner's Manual - Page 19

IF. . Display will not come on. THEN. . n Check that heat or cool system power is on. If you use batteries, replace with fresh ones. n Make sure thermostat is correctly mounted on subbase. Display flashes during programming. n YOU have reached the temperature setting limit. The setting range is 45'F to 88°F. In models with automatic heat-cool changeover, the COOL temperature setting must be at least 3°F above the HEAT temperature setting. Display flashes during operation. n Programming has been lost because ofa power outage. You must reprogram. Program is lost due to power outage. . Check that backup batteries are installed correctly. Replace if necessary. Reprogram the thermostat. Temperature change occurs at the wrong times. m Check the program times for the period in question. Be sure that AM and PM indications are correct. Make sure the current day and time are correct. Reprogram if necessary n Remember that the heating system or cooling system comes on before the WAKE and RETURN start times so the house will be at the desired temperature when the period starts. Heating will not come on. n Checkthefuseorcircuitbreakerand replaceorresetifnecessary. n Check that switch on thermostat is set to HEAT or AUTO. 33 . The:thermostat has a built-in time delay, which may add to time delays in th&cooling e$juipment. Allow up to 10 minutes after changing the setting before the compressor starts. n ,If temp@ure setti@is'lower than current:temperature, and dis- ,,play $8)~ COOL ON qi SYSTEM Iight'iS on, contact your heating and air conditioning contractor. The building is too warm or too cool. n Press ~PRESENT SETTIN& to check, the current temperature setting. . If desired, change the time or tem@rature setting. See page 19. Display says HEAT ON or system light is on, but no,heat is coming from the registers. . Allbwiime forthe heating equipmentto heat up before checking for heat at the register. ,,~ Display tlsshes,REPL~~A~,or goes blank,when @tier:& turned o!. ': ~,~,~~stalJfr,esh ,,A: &:,a,,,lk, $',n,:e,~,,~ ,t~+,tteries (Seempage ,271. 34