Cross Reference - Honeywell T8611G Chronotherm IV Deluxe Manual

T8611G CHRONOTHERM
Symptom
Cooling will not come Thermostat minimum off time is
on (Continued). activated.
System selection is not set to Cool.
Cool setpoint is above room
temperature.
Heating or cooling Heat or cool circuit is opening up
come on momentarily or becoming high impedance.
and shut off
System on indicator Heating or cooling equipment is
(flame=heat, not operating.
snowflake=cool) is
displayed, but no
warm or cool air is
coming from the
registers.
Outdoor temperature Option not activated.
a
not displayed
Outdoor temperature Outdoor sensor is connected
a
display is incorrect incorrectly.
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. Difference Between Chronotherm® III Thermostats And Chronotherm® IV Thermostats.
Feature/Function
Programming
Changeover
Installer Configuration
System switching
Fan switching
Device color
68-0165—1
®
IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTAT
Table 12. Troubleshooting Information (continued).
Possible Cause
Chronotherm® III Family
5-1-1 day programming
Automatic or manual changeover models available
Field settings made via screws on the back of the
thermostat
Mechanical switch
Mechanical switch
Beige or Premier White® color
• Wait up to five minutes for the system to respond.
• Enter Installer Setup number 33. Reconfigure minimum off
time (if required).
Set system selection to Cool.
Check cooling setpoint. Set cooling setpoint to desired
temperature.
Add resistor in parallel with load or install interface relay.
Verify operation of heating or cooling equipment in System 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.
7-day programming
Automatic/manual changeover selectable
Field settings made through the keyboard
Keyboard entry
Keyboard entry
Taupe or Premier White® color
20
Action
Chronotherm ® IV Family