| Display will not change |
Peel protective plastic label from display. |
| Display blurred and unreadable |
Peel protective plastic label from display. |
| Press the small white HW RESET button on the circuit board. Reconfigure and reprogram. |
| Time alternates with room temp |
This is normal operation which can not be changed. |
| Blank or fading display |
Replace its batteries with fresh AA size Duracell® or Energizer® alkaline batteries. Be sure that they are installed with their polarity (+ and -) correct. |
| Clean battery contacts with a pencil eraser and pry out the spring contact slightly to insure a clean, firm connection. |
| Press the small white HW RESET button on the circuit board. Reconfigure and reprogram. |
| Display is locked, cant adjust the display |
Press the NEXT button 3 times then press the HOLD button once. This button sequence locks and unlocks the thermostat. |
| Displays "REPLACE" battery symbol |
Replace thermostat batteries with fresh AA size Duracell® or Energizer® alkaline batteries. Be sure that they are installed with their polarity (+ and -) correct. |
| Clean battery contacts with a pencil eraser and pry out the spring contact slightly to insure a clean, firm connection. |
| Displays wrong room temperature. |
See Temperature Regulation |
| You want to change the displayed temperature scale from °F to °C or from °C to °F |
A jumper comprised of two small pins on the units circuit board and a black shorting device control the TX9000RF displayed temperature scale. Place the shorting device over both pins to use the Fahrenheit scale and over only one pin (either one) to use the Celsius scale. Press the small white HW RESET button on the circuit board. Reconfigure and reprogram. |
| You want to change clock format from 12Hr Standard Time to 24Hr Military Time or from 24Hr Military to 12Hr Standard Time |
A jumper comprised of two small pins on the units circuit board and a black shorting device control the TX9000RF displayed time format. 12Hr or 24Hr military time may be selected. Place the shorting device over both pins to use 12Hr time and over only one pin (either one) to use 24Hr time. Press the small white HW RESET button on the circuit board. Reconfigure and reprogram. |
| Displays wrong day or time |
Rotate the Speed Dial® to SET DAY/TIME. The day will flash, use UP key to correct day. Press NEXT. The time will flash. Use UP and DOWN keys to go to correct time. Rotate dial back to RUN. |
| Displays no set temperature |
The system switch must be in the HEAT or COOL position. Then if no program temperature is visible, press the small white HW RESET button inside on the rear of the circuit board. Reconfigure and reprogram. |
| Shows "888" on display |
Press the small white HW RESET button inside on the rear of the circuit board. Reconfigure and reprogram. |
| Shows "OL" |
"OL" means Out of Limits. The sensor is reading outside the thermostats display limit of 32°F to 95°F. When the temperature returns to within these limits the temperature display will reappear. If actual room temp is not outside these limits, there may be a malfunction. Press the small white HW RESET button on the circuit board. Reconfigure and reprogram. |
| Displays "OVERRIDE" |
"Override" appears on the display when the set temp is raised or lowered from the program temperature. Overrides are terminated at the next scheduled program period when the unit will revert to the program temperature and the "Override" indicator will be extinguished. |
| Display will not light |
Some display backlights are difficult to see in a lighted room. Check the backlight in a darkened area. |
| If the thermostat has batteries installed, replace them with fresh Duracell® or Energizer® alkaline batteries. |
| For further assistance: |
Contact your HVAC service company or our Technical Assistance Line if not resolved. |
