Alpha 6000 User Manual page 168

Fault Name of
display protection
Control circuit
CCF1
fault0
Control circuit
CCF2
fault1
EEPROM
CCF3
fault
AD
CCF4 conversion
fault
CCF5 RAM fault
CPU
CCF6
disturbance
Parameter
PCE
copying error
Possible reasons of fault
●The inverter connect
keyboard once after
electrifying, then
transmitting fault
continue for 2 seconds
or above(during
operating)
●Transmission between
the inverter and
keyboard is established
once after supplying
power, but later
transmission fault
continues for more than
2 seconds.
●EEPROM fault of the
control board
●AD conversion fault of
the control board
●RAM fault of the
control board
●Serious interference
●MCU of the control
board read-write error
●The communication
cable is reverse
connected or the
Data-chosen-switch is
dialed wrong
●Copy wrong parameter
between the keyboard
and EEPROM of
② control board
●EEPROM of control
board is damaged
Chapter6 Troubleshooting
Actions
●Reconnect the keyboard
●Check connection cable of
keyboard
●Replace the keyboard
●Replace the control board
●Replace the control board
●Replace the control board
●Replace the control board
STOP
RESET
●Press to reset
●Add a filter on the side of
power supply
●Seek for tech support
●Recopy the parameter
●Replace the control board
●Seek for tech support
167