Frequently asked questions
If... | Then... |
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Display will not come on | • Make sure the batteries are fresh and installed correctly. |
| • Set the System switch to OFF. Remove the batteries and then insert them |
| backwards for five to ten seconds to reset the thermostat. Replace the |
| batteries correctly. The display should come on. |
|
|
Temperature display will not go | • You have reached the temperature limit. The setting range is |
lower than 45°F (7°C) or higher | |
than 88°F (31°C) during |
|
programming |
|
Display shows flashing or steady “bAt Lo”
•The batteries are low; replace them as soon as possible. See page 18 for instructions.
•If “bAt Lo” continues to display after replacing the batteries, set the System switch to OFF and insert the batteries backwards for five to ten seconds. Then replace the batteries correctly. The display should come on.
Temperature change occurs at the | • Check the program times for the period in question. Be sure that AM and PM |
wrong times | indications are correct. Make sure the current day and time are correct. |
| Reprogram if necessary. |
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|
Heating will not come on | • Check that the System switch is set to HEAT. |
| • Check the system fuse or circuit breaker and replace or reset if necessary. |
| • Check for correct wiring and good connections. |
| • If display is blank or displays “bAt Lo,” install fresh batteries. |
| • Allow time for the furnace to heat up and the fan to come on before checking |
| for heat at the register. |
| • If the temperature setting is higher than the current room temperature and |
| the SYSTEM ON arrow is displayed, the thermostat is operating correctly. |
| Contact a heating contractor for assistance. |
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22 FREQUENTLY ASKED QUESTIONS |
