Operating Manual
69-2440EFS—01
18
570-248
In case of difficulty
Heating or
cooling system
does not respond
• Check circuit breaker and reset if necessary.
• Make sure power switch at heating & cooling system is on.
• Make sure furnace door is closed securely.
• Wait 5 minutes for the system to respond.
Screen displays
“No Signal”
Thermostat has lost radio contact with the wireless network (usually
because of a power outage). To restore power:
• Check circuit breaker and reset if necessary.
• Make sure power switch at heating & cooling system is on.
• Make sure furnace door is closed securely.
After power is restored, the thermostat will automatically restore wireless
communication within a few minutes.
FIVE-YEAR WARRANTY—This CARRIER CORPORATION product is warranted to be free from defects in material and work-
manship under normal use and maintenance for a period of five years from the date of original installation. A new or remanu-
factured part to replace the defective part will be provided without charge for the part itself, through a qualified servicing
CARRIER CORPORATION dealer or service, provided the defective part is returned to our distributor. The replacement part
assumes the unused portion of the warranty.
THIS WARRANTY DOES NOT INCLUDE ANY ADDITIONAL LABOR ALLOWANCE OR OTHER COSTS incurred for diagnosis,
Limited Five-Year Warranty
