Honeywell HC900 Installation And User Manual page 137

Table 27 - Controller Module Diagnostics
OI Screen OI Screen
Item Item Value
MODULE 1 MODULE NO
through COMM
MODULE 16
BAD
CHANNEL
BAD
MODULE
Revision 5
9/03
Number of Possible Cause
LED
Strobes
6 Main CPU is unable to
communicate to the
module for one of the
following reasons:
• Module is not
installed
• Backplane problem
is inhibiting the
CPU to properly
communicate with
the module
• Module is on an
expansion
rack(C50 CPU
only) and the
expansion rack
communications is
failing
6 See Table 29 - Bad
Channel Diagnostics.
6 Module is reporting a
diagnostic condition.
See Table 28 - Bad
Module Diagnostics.
HC900 Hybrid Controller Installation and User Guide
Diagnostics and Troubleshooting - User Interface
Control File Action
See WRONG MODULE.
Associated block sets its
fail pin on, its warn pin
off, and its output pin to
the failsafe value.
Associated block sets its
IO status as denoted in
Table 29 - Bad Channel
Diagnostics.
Associated rack monitor
block's module fail pin is
turned on.
Associated rack monitor
block's RACK OK pin is
turned off.
ASYS block's HW OK
pin is turned off.
See WRONG MODULE.
User Action
Action is based on the
IODIAG indication. If
IODIAG is not
MODULE ERROR,
then follow the
prescribed action
defined for that
diagnostic.
For MODULE ERROR,
do the following:
1. Verify configuration
2. Install module.
See Table 29 - Bad
Channel Diagnostics.
User should inspect
the module's status
LED to determine the
nature of the problem.
The information in
Table 28 - Bad
Module Diagnostics
describes the user
action for the various
LED diagnostics.
127