H100LonWorksManual
44
5.
LED Information
The H100LonWorkscommunication module has four LEDs that indicate the current operation status of the
communication module. The following list shows the LED indicators on the H100 LonWorks communication module.
Note
Error LED or service LED may flash if one of the two communication cables (A or B) is not wired properly. Inspect the
communication cables to ensure that the connections are secure.
Indicator
Color
Description
SERVICE
Green
OFF
– indicates that the H100 LonWorks communication module has been configured.
Flashing (0.5 Hz)
– indicates that the H100 LonWorks communication module has not
been configured.
ON
– lights when the service switch is turned on. If the LED stays on after turning off
the service switch, it means that the H100 LonWorks communication module does not
have the LonWorks application installed in it.
Flashing in 2-sec intervals
– indicates that the H100 LonWorks communication
module has not been configured.
Flashing intermittently
– indicates that electronic interference is affecting the
LonWorks network. Inspect network cables to ensure that the connections are secure.
CPU
Green
Flashing in 1-sec intervals
– indicates that power is supplied to the communication
module and the CPU is operating normally.
COMM
Green
OFF
– indicates that the module is not communicating.
Flashing
– indicates that the module is currently communicating.
When the COMM LED flashes, the ‘ON’ state indicates transmission and the ‘OFF’ state
indicates reception.
ERROR
Red
CPU, ERROR LED flashing simultaneously
– indicates a CAN (controller area
network) communication error. CAN refers to the type of interface used for
communication between the LonWorks communication module and the H100 Inverter.
Check the ‘Option Trip’ messages on the Keypad display.
Flashing intermittently
– indicates that electronic interference is affecting the
LonWorks network. Inspect the network cables to ensure that the connections are
secure.
Service (Green)
COMM (Green)
ERROR (Red)
CPU (Green)
