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Thermostat
Honeywell
T8424C
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Contents
Main
PRODUCT DATA
T8400C, T8401C and T8424C,D Electronic Thermostats
APPLICATION
FEATURES
T8400C and T8401C T8424C,D
ORDERING INFORMATION
SPECIFICATIONS
INSTALLATION
When Installing this Product
CAUTION
MERCURY NOTICE
UP
Location
Mounting Decorator Cover Plate and Wallplate to Wall
Wiring
G C R Y
W1 Y2
W2 B O
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G R
C
Y2
Y
W1 B O
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Mounting Thermostat to Wallplate
SETTINGS AND ADJUSTMENTS
B
Setting Fan and System Switches
Fan Switch
A
Set Temperature Setpoint
Setting F/C Indication and Heat Cycle Rate
OPERATION
Zero Droop Performance
Power Stealing
Energy Savings
Sequence of Operations
Fan Control
Heat Mode
Cool Mode
CAUTION
Fan
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TROUBLESHOOTING
Refer to Fig. 21 for the proper troubleshooting procedure.
Fig. 21. Troubleshooting procedure.
SYMPTOM POSSIBLE CAUSE ACTION