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0041 State Invalid S The state machine implemented
within the CCU2 system software
governs the operation of the PV225S.
This fault indicates that the PV225S
has detected an unknown system
variable and has encountered an
invalid state.
• Internal RAM error
• CPU error
0042 Serial EEPROM
Write Error
S This fault indicates that the PV225S
has detected a serial EEPROM write
error. The CCU2 controller board
performs a verification check of data
written to ROM compared to what is
read back.
• Internal ROM error
• CPU error
0043 Serial EEPROM
Timeout
S This fault indicates that the PV225S
has detected that when writing data to
the serial EEPROM, a confirmation
timer of 300mS has expired.
• Internal ROM error
• CPU error
0044 Bad NOVRAM
Memory
S This fault indicates that the PV225S
has detected that one of the two non-
volatile memory banks on the CCU2
controller board has failed. The
CCU2 performs a series of tests to
confirm the validity of the
NOVRAM, and one of the two banks
has produced errors.
• Internal NOVRAM
error
• CPU error
0045 Interrupt 2 Timeout S This fault indicates that the PV225S
has detected that an interrupt 2
timeout has occurred. The CCU2
controller board performs a
conversion validation of analog-to-
digital data within the A to D
converters. If validation of the
conversion is not performed within
500mS, an interrupt 2 timeout fault
will occur.
• Internal A to D
converter error
• CPU error
0047 Software Test S This fault indicates that the PV225S
has detected that a software test fault
has occurred. This is a simulated fault
used for debugging purposes.
Table 4-1
Fault Codes
Error
Code Fault Source(s)
Fault Type
H=Hardware
S=Software
Fault Description Possible Causes