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Then set the SYSTEM switch:
Cool: Normal setting for months when your home
needs cooling (air conditioning). Digital display
shows a snowflake when cooling is on.
Off: Both heating and cooling are off.
Heat: Normal setting for months when your home
needs heating. Digital display shows a flame
when heating is on.
SYSTEM
Cool Off Heat
SYSTEM
SWITCH
M14228
IMPORTANT
Do not operate the Thermostat in cooling mode
when the outdoor temperature is below 50
°
F
(10
°
C), or damage to compressor could result.