Honeywell Th4210D User Manual
Installation Guide
10
Quick reference to controls
•
Set: Press to set time/day/
schedule
schedule
•
Hold: Press to override
programmed temperature control.
programmed temperature control.
•
Run: Press to resume program
schedule
schedule
System switch
•
Cool: Thermostat controls only
the cooling system.
the cooling system.
•
Heat: Thermostat controls only
the heating system.
the heating system.
•
Off: Heating and cooling
systems are off.
systems are off.
•
Em Heat: Thermostat controls
emergency and auxiliary heat.
Compressor is locked out.
emergency and auxiliary heat.
Compressor is locked out.
Fan switch
On: Fan runs continuously.
Auto: Fan runs only when heating
or cooling system is on.
On: Fan runs continuously.
Auto: Fan runs only when heating
or cooling system is on.
Temperature adjustment
Inside
Set To
75
6:30
AM
75
Wake
Em Aux
Heat
On
°
°
Replace Batt
Recovery
Quick reference to display screen
Current inside
temperature
temperature
Low battery warning
Adaptive Intelligent Recovery
Current program period
Wake/Leave/Return/Sleep
Wake/Leave/Return/Sleep
Temperature setting
System status
Em: Emergency heat on
Aux: Auxiliary heat on
Heat On/Cool On:
(Flashes when waiting
for compressor restart)
Em: Emergency heat on
Aux: Auxiliary heat on
Heat On/Cool On:
(Flashes when waiting
for compressor restart)
Wed
Current day/time