10. C300 Controller Troubleshooting
10.10. Communication and system time faults during startup
R500
April 2017
Series 8 C300 Controller User's Guide
Honeywell
265
Controller
Faceplate
Problem
C300 Block
Time Source
Station Alarm
Resolve
LEDs
Green
Established
connection to system
time source
C300 transitions to
secondary redundancy role
assuming its partner has
CDA available.
Display
BKUP
CB
icon
Grey
Status
LED
Green
None. Normal operation for
redundant controller with
battery backup following a
power cycle.
SNTP
None
None.
FTE
LEDs
Blinking
Green
Display
IDLE
CB
icon
Blue
Secondary C300 Controller with no Memory Retention
Controller
Faceplate
Problem
C300 Block
Time Source
Station Alarm
Resolve
Status
LED
Blinking
Red
No communication on FTE
network.
None
None
FTE
LEDs
Off
Display
COMM
CB
icon
Red
Status
LED
Blinking
Orange
Communication on FTE
network.
No communication
through CDA
Unable to establish
connection to system
None
None
FTE
LEDs
Blinking
Green
Display
BKUP