Honeywell Chronotherm IV T8602D Installation Instructions Manual page 12

Symptom
System on indicator Fan operation set for 0 (con-
(flame=heat, ventional heat) when it should
snowflake=cool) is be set for 1 (electric heat).
displayed, but no
Conventional heating equipment
warm or cool air is
turns on the fan when the
coming from the
furnace has warmed up to a
registers.
setpoint.
Heating or cooling equipment is
not operating.
Outdoor tempera- Option not activated.
a
ture not displayed
Outdoor Outdoor sensor is connected
temperature incorrectly.
a
display is incorrect
Wrong sensor.
a
Select models.
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
69-1510-4 G.H. Rev. 03-03
Table 6. Troubleshooting Guide. (Continued)
Possible Cause
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Scarborough, Ontario
M1V 4Z9
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 Sensor installed.
Refer to C7089B1000 Installation Instructions and check wiring
between the thermostat and sensor.
Replace sensor with C7089B1000 Sensor.
Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.
Action
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