Honeywell HC900 User And Installation Manual page 192

Number Possible Causes
of Red
Strobes
4 Estimated battery life is
less than 5 days.
4 Battery voltage is low.
4 Flash failed to burn
5 The Real-time Clock
(RTC) is not
programmed. This is
usually a result of the
lead's battery failing
when it was powered-
down.
178
Lead and/or Reserve Controller
Action(s)
 ASYS and FSYS blocks' HW
OK pins are turned off.
 Firmware upgrade is still
permitted.
 ASYS and FSYS blocks'
LOWBTRY pins are turned on.
 ASYS and FSYS blocks' HW
OK pins are turned off.
 Firmware upgrade is inhibited
until both the Lead and Reserve
batteries are good.
ASYS and FSYS blocks' HW OK
pins are turned off.
1. On power-up, time and date is
initially set to 00:00:00, January 1,
1970 on both the lead and the
reserve.
2. ASYS and FSYS blocks' HW OK
pins are turned off.
Note: If the reserve's battery fails
when it is powered-down. The lead
will automatically program the
reserve's RTC with the correct date
and time when the lead and reserve
are synchronized.
HC900 Process & Safety Controller User and Installation Manual
User Action
Replace battery.
Replace battery.
1. Force a cold start
2. If diagnostic does not clear, replace
CPU module.
Use HCDesigner, HCUtilities, or OI to
program the real-time clock (RTC).
Honeywell OI HCDesigner/HC
Indication Utilities Indication
If the lead's status If the lead's status
LED is indicating LED is indicating
the failure, see the failure, see
MEMORY in the Memory
"Lead CPU
Diagnostics in
Diagnostics" the "Lead
display. Diagnostics
Overview" dialog
If the reserve's
box.
status LED is
If the reserve's
indicating the
failure, see status LED is
MEMORY in the indicating the
"Reserve CPU
failure, see
Diagnostics"
Memory
display. Diagnostics in
the "Reserve
Diagnostics
Overview" dialog
box.
If the lead's status If the lead's status
LED is indicating LED is indicating
the failure, see the failure, see
RTC in the "Lead
Real-Time Clock
CPU Diagnostics"
Diagnostics in
the "Lead
display.
Diagnostics
If the reserve's
Overview" dialog
status LED is
box.
indicating the
If the reserve's
failure, see RTC in
the "Reserve CPU
status LED is
Diagnostics"
indicating the
display. failure, see Real-
Time Clock
Diagnostics in
the "Reserve
Diagnostics
Overview" dialog
box.
Revision 6
21 April 2017