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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 | |
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| backwards for five to ten seconds to reset the thermostat. Replace the |
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| batteries correctly. The display should come on. |
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Temperature display will not go | • | You have reached the temperature limit. The setting range is |
lower than 45°F (7°C) or higher |
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than 88°F (31°C) during |
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programming |
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Display shows flashing or steady | • | The batteries are low; replace them as soon as possible. See page 18 for |
“bAt Lo” |
| instructions. |
| • If “bAt Lo” continues to display after replacing the batteries, set the System | |
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| switch to OFF and insert the batteries backwards for five to ten seconds. |
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| Then replace the batteries correctly. The display should come on. |
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Temperature change occurs at the | • Check the program times for the period in question. Be sure that the AM and | |
wrong times |
| PM indications are correct. Make sure the current day and time are correct. |
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| 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.
FREQUENTLY ASKED QUESTIONS 21 |