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» Support ELV4

Troubleshooting the Display
  • Problems that may be identified from the display of your programmable thermostat are listed here with suggested resolutions.
  • For more detailed information please refer to the instructions that came with your thermostat.
  • The instruction manual for this model can be viewed in PDF format by clicking here.

Model ELV4
   
Problem Resolution
Display will not change Peel protective plastic label from display.
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.
Time alternates with room temp This is normal operation which can not be changed.
Blank or fading display Replace units 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 RESET using a small Philips screw driver. Then reconfigure and reprogram.
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.
Displays wrong room temperature See Temperature Regulation 
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.
Shows "888" on display Press RESET using a small Philips screw driver. Reconfigure and reprogram.
Shows "OL" "OL" means Out of Limits. The sensor is reading outside the thermostats room temperature display limit of 32°F to 95°F. When the temperature returns to within these limits the temperature display should 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.
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  Not Applicable. Display is not backlit.
For further assistance: Contact your HVAC service company or our Technical Assistance Line if not resolved.
 
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