18 Fault Finding Guide Doc. version 2
4 Network Card Fault Handling FIRECLASS Fire Alarm Control Panels
4 Network Card Fault Handling
4.1 TLI800EN LEDs
Left and Right network LEDs pulse for each data bit. At
high network baud rates on networks running normally
they appear to be ON.
CPU Fault LEDs are hardware watchdog circuit outputs.
If a CPU Fault is indicated the watchdog is holding the
CPU in its reset condition until the reset button is
pressed
For Normal Operation:
The following sections cover the faults raised when a
monitored condition fails.
4.2 Comms Fault
“Comms Fault” indicates a problem between the panel
and the TLI800EN card.
Actions:
Check the cable connection between TLI800EN card
and FIM COM3
Check that the TLI800EN has a power supply and
that the CPUs are running (Status LEDs)
Check that the TLI800EN Dip Switch settings for
‘Host interface baud rate‘ as set in Fireclass
Express, Panel Details dialog.
4.3 Open or Short Circuit -
Left
Yellow LED ON = Emergency CPU Fault
Yellow LED ON = Main CPU Fault
Green LED Flashing = Emergency CPU running nor-
mally
Green LED Flashing = Main CPU running normally
Red LED Network Tx Right
Red LED Network Rx Right
Red LED Network Tx Left
Red LED Network Rx Left
Test mode SW3-8 = OFF
firmware download SW1-8 = OFF
SW2-8 = OFF
watchdog SW2-6 = ON
SW2-7 = ON