If... | Then... |
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Cooling will not come on | • Check that the System switch is set to COOL. |
| • 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 says “bAt Lo,” install fresh batteries. |
| • The thermostat has a |
| after changing the setting before the air conditioner starts. |
| • If the temperature setting is lower than the current room temperature and the |
| SYSTEM ON arrow is displayed, the thermostat is operating correctly. |
| Contact an air conditioning contractor for assistance. |
The house is too warm or too cool |
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• Press | to check the current temperature setting. |
•If desired, change the temperature setting. See page 19 for instructions.
The furnace cycles too frequently | • Adjust the screws on the back of the thermostat as instructed on page 7. |
or the system cycle length is too |
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short or too long |
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The thermostat’s current setting | • Plug the wiring hole in the wall behind the mounting plate with insulation to |
does not match the display | prevent drafts that might adversely affect thermostat operation. |
temperature to within plus or minus | • Be aware that it is normal for the current setting and the displayed room |
1° | temperature to differ on occasion. |
| • During recovery from setback or setup, setting and displayed room |
| temperatures may differ for up to 30 minutes after recovery period. |
Customer assistance
For all questions concerning this thermostat, please read and follow the instructions. If you need additional assistance, call Honeywell Customer Relations at
•Thermostat model number and serial code (located under the battery cover)
•Type of heating/cooling system (hot water, warm air, oil, gas, etc.)
•Number of wires connected to the thermostat
NOTICE: This equipment is a Class B digital apparatus, which complies with Canadian Radio Interference Regulations, CRC c.1374.
22 FREQUENTLY ASKED QUESTIONS |