Chapter V Basic Operation Instructions
150
Fault
code
Fault type
Possible cause of
failure
Countermeasures
E027
Reserved
-
-
E028
Keypad parameter
copy error alarm
The keypad parameters
are incomplete.
Re-upload the parameters in the backup
keypad.
The keypad parameters
are inconsistent with the
main
control
board
parameter
software
version.
The parameter software version is
inconsistent, and you cannot execute the
parameter
downloading,
please
re-upload the parameters in the backup
keypad.
The keypad parameters
are of 2S model, but the
main
control
board
parameters are of 4T
model.
The parameter rated voltage is
inconsistent so the parameter download
function cannot be executed. Re-upload
and download the parameters from the
keypad.
The keypad parameters
and the main control
board parameters are
inconsistent with the
drive’s model.
Drive’s model is inconsistent so the
parameter download function cannot be
executed. Re-upload and download. the
parameters from the keypad.
E029
Wave-by-wave
current
limiting
alarm
Excessive load
Check whether the grid voltage is
normal
Check whether the motor is locked
Seek for service.
E034
Water pipe break
alarm
Water pipe break
Check the pipe