Device Index Value Is Zero Upon Power Up - Honeywell C300 User Manual

10. C300 Controller Troubleshooting
10.4. Fixing common problems

Device Index value is zero upon power up

The controller's 4-character display shows a Device Index value of zero (#000).
Diagnostic Check
Cause 1
Solution
Cause 2
Solution
Cause 3
Solution
242
Be sure Device Index switches on the IOTA were not intentionally set to
zero to initiate a Device Index/IP Address reset.
Device Index switches set to zero.
Change Device Index switches to correct setting. Refer to the section
Res et Device Index and IP address of controller
The controller module is defective.
Replace the controller. Refer to the section
IOTA replacement for details.
If Device Index switch setting matches Device Index number in 4-
character display upon controller power up, the removed controller is
defective. Otherwise, proceed to Cause 3.
The IOTA is defective.
Replace the IOTA. Refer to the section
IOTA replacement for details.
If Device Index switch setting matches Device Index number in 4-
character display upon controller power up, the removed IOTA is
defective.
Series 8 C300 Controller User's Guide
Honeywell
for more information.
C300 Controller module and
C300 Controller module and
R500
April 2017