Controller Troubleshooting - Carrier 09FC020 Installation, Start-Up And Maintenance Instructions

Controller Troubleshooting

The LED's shown in Fig. 32 indicate if the controller is speaking
to the device on the network. The LED's should reflect communi-
LEDS
Power
Lights when power is being supplied to the controller.
NOTE: The AppController is protected by internal solid state Polyswitches on the incoming power and network connections.
These Polyswitches are not replaceable, but they will reset themselves if the condition that caused the fault returns to normal.
Rx Lights when the controller receives data from the network segment; there is an Rx LED for Ports 1 and 2.
Tx Lights when the controller transmits data from the network segment; there is a Rx LED for Ports 1 and 2.
Run Lights based on controller health. See table below.
Error
Lights based on controller health. See table below.
The Run and Error LED's indicate controller and network status.
If Run LED shows...
1 flash per second
2 flashes per second
2 flashes per second
2 flashes per second
2 flashes per second
2 flashes per second
2 flashes per second
5 flashes per second
5 flashes per second
7 flashes per second
14 flashes per second
On
NOTE: If you resolve the issue but the Error LED does not turn off, cycle power to the controller.
Table 17 — LED Statuses
And Error LED shows...
1 flash per second, alternating with the Run LED
Off
2 flashes, alternating with Run LED
3 flashes, then off
4 flashes, then pause
1 flash per second
On
On
Off
7 flashes per second, alternating with Run LED
14 flashes per second, alternating with Run LED
On
cation traffic based on the baud rate set. The higher the baud rate
the more solid the LEDs become. See Table 17.
Verify the LED patterns by cycling power to the controller and
noting the lights and flashes. See Fig. 32.
STATUS
Status is...
The controller files are archiving. Archive is complete
when Error LED stops flashing.
Normal
Five minutes auto-restart delay after system error
The controller has just been formatted
Two or more devices on this network have the same net-
work address
The controller is alone on the network
Exec halted after frequent system errors, due to:
- Controller halted
- Program memory corrupted
- One of more programs stopped
Exec start-up aborted, Boot is running
Firmware transfer in progress, Boot is running
Ten second recovery period after brownout
Brownout
Failure. Try the following solutions:
- Turn the AppController off, then on
- Download memory to the AppController
- Replace the AppController
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