F82 Modbus Timeout Fault Indicates that the starter has lost serial communications. Fault
occurs when the starter has not received a valid serial
communications within the Communication Timeout
parameter (FUN12) defined time.
Verify communication parameter settings (FUN 10 - FUN13).
Check wiring between the remote network and the MX
2
control card.
Examine remote system for cause of communication loss
F94 CPU Error - SW Fault Typically occurs when attempting to run a version of control
software that is incompatible with the MX
2
control card
hardware being used. Verify that the software is a correct
version for the MX
2
control card being used. Consult factory
for more details.
Fault can also occur if the MX
2
control has detected an
internal software problem. Replace card.
F95 CPU Error - Parameter EEPROM
Checksum Fault
The MX
2
found the non-volatile parameter values to be
corrupted. Typically occurs when the MX
2
is re-flashed with
new software.
Perform a Factory Parameter reset (FUN 15) and then
properly set all parameters before resuming normal operation.
If fault persists after performing a Factory Parameter reset,
replace card.
F96 CPU Error
The MX
3
has detected an internal CPU problem. Replace
card.
F97 CPU Error – SW Watchdog Fault
The MX
3
has detected an internal software problem. Replace
card.
F98 CPU Error
The MX
3
has detected an internal CPU problem. Replace
card.
F99 CPU Error - Program EPROM
Checksum Fault
The non-volatile program memory has been corrupted.
Replace card. Control software must be reloaded in to MX
2
control card before normal operation can resume.
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8 - TROUBLESHOOTING & MAINTENANCE