Gree GMV BACnet Manual técnico y de servicio - Página 17

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Gree GMV BACnet Manual técnico y de servicio
Protocol shall refer to the specification.

2.3 EXCEPTION HANDLING

Note: Here are several reasons and troubleshooting methods for exception handling under
exception conditions. It not solved, please contact relevant professional Gree staff.
Communication connection cable
between gateway and AC unit is
not correct or the communication
cable is not connected
Check the continuity of
communication cable: refer
to "3.2 communication
connection" and check if the
communication connection
between BACnet gateway
and AC unit is correct
GMV BACnet Gateway Technical Service Manual
Yes
End
Abnormal condition
BACnet gateway
CAN light is not on
BACnet gateway does not
receive the data from AC unit
The matched resistance
in every nod of CAN
bus are not correctly set
Refer to the dial-up
setting in "1. Hardware
debug" and inspect if the
matched resistance in
CAN bus is correctly set
No
treatment 1
among CAN bus exceeds 500m
Decrease the communication
distance of CAN bus to 500m,
suggest to install BACnet
14
Communication distance
gateway nearby the AC