Part 5 Troubleshooting Guide
5 Troubleshooting Guide (continued)
Problem | Possible Cause | Action |
|
|
|
Temperature set | No action needed: should | |
point icon blinking | enabled to protect | stop blinking after |
| compressor | 2 minutes |
|
|
|
No Heat, No Cool, | Blown fuse / | Replace fuse or reset |
or No Fan | tripped circuit | breaker |
| breaker |
|
| Furnace power | Turn switch to ON |
| switch to OFF |
|
| Furnace blower | Replace door panel |
| compartment door | in proper position to |
| or panel loose or | engage safety interlock |
| not properly | or door switch |
| installed |
|
| Loose connection | Tighten connections |
| to thermostat |
|
| or system |
|
Problem
Thermostat doesn’t follow the scheduled program
HEAT or COOL icon flashing in Auto Changeover mode
Possible Cause
AM or PM set incorrectly in the program
AM or PM set incorrectly on the thermostat’s clock
Part of normal operation; indicates Heating or Cooling operation
Action
Check the current settings including AM and PM designations for each time period
No action required
| Low Batteries | Replace batteries |
|
|
|
Thermostat & |
| The thermometer can be |
Indoor |
| adjusted +/- 4 degrees. |
Thermometer |
| See Temperature Display |
Setting Disagree |
| Adjustment in the |
|
| Configuration Menu section |
|
|
|
No Display or | Low Batteries | Replace batteries |
no Backlight |
|
|
|
|
|
Reset Operation
If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation, you can reset the thermostat by pressing all three (SYSTEM, and press both 
icons) simultaneously for 2 seconds.
This reset will restore your thermostat’s initial factory setting.
Remember to turn off your heating / cooling system BEFORE resetting your thermostat. You will then have to go through a full initial setup described in Part 3 and Part 4 of the manual before you can turn your Heating & Cooling system back on. Failure to follow this instruction may lead to your Heating & Cooling system damage or malfunction.
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