will report the
Fault Tracking
116
Fault code
Fault type
Possible cause
What to do
interference
There is circuit fault on the
communication of the
keypad and main board
source
Change the hardware and
ask for service
DNE
Parameters
downloading fault
The connection of the
keypad wires is not good or
broken
The keypad wire is too long
and affected by strong
interference
There is mistake on the
data storage of the keypad
Check the keypad wires
and ensure whether there is
mistake
Change the hardware and
ask for service
Repack-up the data in the
keypad
LL
Electronic
underload fault
underload pre-alarm
according to the set value
Check the load and the
underload pre-alarm point
8.5.1 Other states
Fault code
Fault type
Possible cause
What to do
PoFF
System power off
System power off or the
bus voltage is too low
Check the grid
Communication failure between
the keypad and main control board
The keypad is not
connected correctly
Check the installation
environment