Cross Reference - Honeywell CHRONOTHERM T8600D Product Data

T8600D, T8601D AND T8602D CHRONOTHERM
Symptom
Heating or cooling Heat or cool circuit is opening
come on up or becoming high
momentarily and impedance.
shut off
Fan operation set for 0
System on indicator
(conventional heat) when it
(flame=heat,
should be set for 1 (electric
snowflake=cool) is
heat).
displayed, but no
warm or cool air is
Conventional heating
coming from the
equipment turns on the fan
registers.
when the furnace has
warmed up to a setpoint.
Heating or cooling equipment is
not operating.
Outdoor Option not activated.
temperature not
a
displayed
Outdoor sensor is connected
Outdoor
incorrectly.
temperature
a
display is incorrect
Wrong sensor.
a
Available on select models.

CROSS REFERENCE

All SUPER TRADELINE® Chronotherm® IV thermostats are
different from the existing Chronotherm® III devices as
summarized in Table 13.
Table 13. Differences Between Chronotherm® III Thermostats and Chronotherm® IV Thermostats.
Feature/Function
Programming 5-1-1 day programming
Changeover Automatic or manual changeover models
available
Installer configuration Field settings made via screws on the back of
the thermostat
System switching Mechanical switch
Fan switching Mechanical switch
Device color Beige or Premier White® color
®
Table 12. Troubleshooting Information (continued).
Possible Cause
Add resistor in parallel with load or install interface relay.
Enter Installer Setup number 2 and reconfigure the fan operation.
Wait a minute after seeing the on indicator and then check the registers.
Verify operation of heating or cooling equipment in self-test.
Enter Installer Setup number 24 and set to 1. Thermostat must have OT
terminals and a C7089B1000 installed.
Refer to C7089B1000 installation instructions and check wiring between
the thermostat and sensor.
Replace sensor with C7089B1000 sensor.
Chronotherm® III Family
IV DELUXE PROGRAMMABLE THERMOSTATS
Refer to Table 14 for thermostat cross referencing information.
7-day programming
Automatic/manual changeover selectable
Field settings made through the keyboard
Keyboard entry
Keyboard entry
Taupe or Premier White® color
19
Action
Chronotherm® IV Family
68-0164—1