If you have difficulty with your thermostat, please try the following suggestions.
Most problems can be corrected quickly and easily.
Display is blank
Check circuit breaker and reset if necessary.
Make sure power switch at heating & cooling system is on.
Make sure furnace door is closed securely.
Make sure fresh AAA alkaline batteries are correctly installed.
Heating or cooling system does not respond
Set system switch to Heat. Make sure the temperature is set higher than the Inside temperature.
Set system switch to Cool. Make sure the temperature is set lower than the Inside temperature.
Wait 5 minutes for the system to respond.
Temperature settings do not change
Make sure heating and cooling temperatures are set to
acceptable ranges:
Heat: 40° to 90°F (4.5° to 32°C).
Cool: 50° to 99°F (10° to 37°C).
“Cool On” or “Heat On” is flashing
Compressor protection feature is engaged. Wait 5 minutes
for the system to restart safely, without damage to the
compressor.
“Heat On” is not displayed
Set the System switch to Heat, and set the temperature level above the current room temperature.
“Cool On” is not displayed
Set the System switch to Cool, and set the temperature level below the current room temperature.
For assistance with this product, please visit http://yourhome.honeywell.com or
call Honeywell Customer Care toll-free at 1-800-468-1502.
1-year limited warranty
Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under
normal use and service, for a period of one (1) year from the date of purchase by the consumer. If at any time
during the warranty period the product is determined to be defective or malfunctions, Honeywell shall repair or
replace it
(at Honeywell’s option).
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