Honeywell RTH6400D1000A Operation Manual - Page 17
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Auto Changeover RTH6400 Programmable Thermostat If the cool temperature is lowered to where it gets close to the heat setting, an arrow next to heat will show the thermostat is lowering the heat setting down to maintain a 3-degree separation. Inside 73 Temporary Heat Setting 73 1:05 PM Run Schedule Fan Auto Cool Select Heat/Cool M27477 The triangle indicates the cool temperature is increasing to maintain 3 degrees between heat and cool settings. Press Select Heat/Cool to set the heat or cool temperature. CAUTION: To avoid possible compressor damage, do not use Auto Changeover if the outside temperature drops below 50ºF (10ºC). 15 69-2211EF-05
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RTH6400 Programmable Thermostat
15
69-2211EF—05
If the cool temperature is lowered to where it gets close to the heat setting, an arrow next
to heat will show the thermostat is lowering the heat setting down to maintain a 3-degree
separation.
Auto Changeover
CAUTION:
To avoid possible compressor damage, do not use Auto Changeover if
the outside temperature drops below 50ºF (10ºC).
Run
Schedule
Auto
Cool
Fan
Select
Heat/Cool
Heat
Setting
Inside
PM
73
73
1
:
05
Temporary
M27477
Press Select Heat/Cool to set the heat or cool tem-
perature.
The triangle indicates the cool temperature is
increasing to maintain 3 degrees between heat and
cool settings.