Operating Manual
4
ENGLISH
System switch
Use the System switch to place the system in one of the following
modes.
• Cool: System is in Cooling mode. (This mode is not available on
the TH1100D model.)
• Off: System is off.
• Heat: System is in Heating mode.
• Em Heat: System is in Emergency Heat mode. Only auxiliary
heating can be activated. The compressor is disabled. (This
mode is available on the TH1210D model only.)
CAUTION: EQUIPMENT DAMAGE HAZARD
Do not use Cooling mode when the outdoor temperature is below 50 °F (10 °C).
400-626-002-D (69-1971EFS-04 non-prog TH1110D_TH1210D user manual) USA.book Page 4 Tuesday, September 8, 2009 10:31 AM
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