Part 5 Troubleshooting Guide
Problem | Possible Cause | Action |
|
|
|
Snowflake | No action needed: should | |
icon blinking | enabled to protect | stop blinking after |
| compressor | 5 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 |
|
| 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 |
5 Troubleshooting Guide (continued)
Problem | Possible Cause | Action |
|
|
|
No Display or | Low Batteries | Replace batteries |
no backlight |
|
|
Thermostat | AM or PM set | Check the current |
doesn’t follow the | incorrectly in the | settings including AM and |
scheduled program | program | PM designations for |
|
| each time period |
| AM or PM set | |
|
| |
| incorrectly on the |
|
| thermostat’s clock |
|
Heating or Cooling | Energy | No action required |
starts earlier than | Management |
|
programmed | Recovery function |
|
| activated. See |
|
| Table 3.3, Step 4 |
|
| for details |
|
|
|
|
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 buttons (TIME, and both buttons) simultaneously. 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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