Honeywell HC900 User Manual
Diagnostics and Troubleshooting - User Interface
Revision 5
HC900 Hybrid Controller Installation and User Guide
125
9/03
Table 27 - Controller Module Diagnostics
OI Screen
Item
Item
OI Screen
Item Value
Item Value
Number of
LED
Strobes
LED
Strobes
Possible Cause
Control File Action
User Action
IO RACK
COMM FAIL
6
The Main CPU is
unable to successfully
communicate to an
expansion rack(C50
CPU only) that is in its
configuration.
unable to successfully
communicate to an
expansion rack(C50
CPU only) that is in its
configuration.
See RACK BACKPLANE
FAIL.
FAIL.
1. Verify that the
expansion rack
should be in the
configuration
should be in the
configuration
2. Verify that the
jumpers on the
scanner are set up
for the correct rack
address.
scanner are set up
for the correct rack
address.
3. Check that
expansion rack is on.
4. Check the expansion
rack’s status LED for
diagnostic
information.
diagnostic
information.
5. Check that cable is
connected to
expansion rack.
expansion rack.
6. If a hub is used,
check that all cables
are properly
connected to the
hub, proper
crossover cables are
used, and that hub is
powered.
are properly
connected to the
hub, proper
crossover cables are
used, and that hub is
powered.
7. Cycle power to the
rack.
8. Cycle power to the
hub.
9. Replace the
expansion rack’s
power supply.
power supply.
10. Replace the
expansion rack.
11. Replace the
expansion rack’s
scanner board.
scanner board.
12. Replace the main
CPU.
RACK
SW
INCOMPATILITY
6
The Main CPU
determined that its
software is not
compatible with the
scanner module.
determined that its
software is not
compatible with the
scanner module.
All associated module
diagnostics are set to
MODULE NO COMM.
Refer to MODULE NO
COMM diagnostic for
further details.
diagnostics are set to
MODULE NO COMM.
Refer to MODULE NO
COMM diagnostic for
further details.
1. Upgrade the scanner
software either by
replacing the module
or doing a code-
download.
replacing the module
or doing a code-
download.
2. Update Main CPU
software either by
replacing the module
or doing a code
download.
replacing the module
or doing a code
download.