Honeywell Chronotherm IV T8602D - Manual (Page 12)

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Automation and Control Solutions
Honeywell International Inc. Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422 Scarborough, Ontario
M1V 4Z9
System on indicator
(flame=heat,
snowflake=cool) is
displayed, but no
warm or cool air is
coming from the
registers. Fan operation set for 0 (con-
ventional heat) when it should
be set for 1 (electric heat). Enter Installer Setup number 2 and reconfigure the fan
operation.
Conventional heating equipment
turns on the fan when the
furnace has warmed up to a
setpoint. Wait a minute after seeing the on indicator and then check the
registers.
Heating or cooling equipment is
not operating. Verify operation of heating or cooling equipment in self-test.
Outdoor tempera-
ture not displayed
a
Option not activated. Enter Installer Setup number 24 and set to 1. Thermostat must
have OT terminals and a C7089B1000 Sensor installed.
Outdoor
temperature
display is incorrect
a
Outdoor sensor is connected
incorrectly. Refer to C7089B1000 Installation Instructions and check wiring
between the thermostat and sensor.
Wrong sensor. Replace sensor with C7089B1000 Sensor.
a Select models.
Table 6. Troubleshooting Guide. (Continued)
Symptom Possible Cause Action