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FROM THE DISPLAY |
| Model |
TX500 |
| Problem |
Resolution |
| Display will not change. |
- Peel protective plastic label from display.
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| Display blurred and unreadable. |
- Peel protective plastic label from display.
- Press the small round inset RESET button behind the door of your unit using a small Philips screw driver. Reconfigure and reprogram as necessary.
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| Time alternates with Room temp |
- This is normal operation which can not be changed.
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| Blank or fading display |
- If the thermostat is battery powered only, 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 round inset RESET button behind the door of your unit using a small Philips screw driver. Reconfigure and reprogram as necessary.
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Displays "LO BATT", "REPLACE", or
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.
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| Displays wrong room temperature |
- See Temperature Regulation
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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 TX500s 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. Then press RESET using a small Philips screw driver. Reconfigure and reprogram.
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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 TX1500s 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 RESET using a small Philips screw driver. Reconfigure and reprogram.
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| 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.
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| Displays no set temperature. |
- The system switch must be in the HEAT or COOL position. Then if no program temperature is visible, Press RESET using a small Philips screw driver. Reconfigure and reprogram.
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| Shows "888" on display |
- Press RESET using a small Philips screw driver. Reconfigure and reprogram.
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| 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 RESET using a small Philips screw driver. Reconfigure and reprogram.
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| 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.
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