Carrier Vector 1550-11 - Page 209

62-61753-21
7-93
Alarm
NO.
Steps
ALARM / CAUSE
CORRECTIVE ACTION
245 CANNOT SAVE SETTING
 TRIGGER-ON: There is an error in sending and saving new settings in the Microprocessor
memory.
 UNIT CONTROL: Alarm only.
 RESET CONDITION: Alarm may be manually reset via Keypad or by turning the unit off, then back on
again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, the active
alarm should clear itself (see reset condition above). Operate the unit through the appropriate modes to see if any
active alarm occurs. Continue with the steps below as necessary.
1
Check Microprocessor Software Revision
a. Check Microprocessor Software
Revision.
Will be a 6 digit number.
2
Reset Microprocessor
a. Place the SROS in the OFF posi-
tion for 30 seconds, then back to
START / RUN.
Will be a 6 digit number.
Upgrade to the latest version.
b. Check Active Alarm List.
Alarm is cleared - microprocessor is OK.
c. Alarm 245 can not be cleared.
Unit will operate, but changes to the settings will not be
retained in the microprocessor memory. Replace mi-
croprocessor. Refer to Section 5.4
246 EEPROM WRITE FAILURE
 TRIGGER-ON: here is an error in the ability to write information to be stored in the memory.
 UNIT CONTROL: Alarm only
 RESET CONDITION: Alarm may be manually reset via Keypad or by turning the unit off, then back on
again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, clear the
alarm(s). (See Note 1 Page 7-1) Operate the unit through the appropriate modes to see if any active alarm oc-
curs. Continue with the steps below as necessary.
1
Check Microprocessor
a. Check set point setting.
Must be between -30°C to +32°C (-22°F to +89.6°F)
b. Enter new set point.
Must be between -30°C to +32°C (-22°F to +89.6°F)
2
Reset Microprocessor
a. Turn main switch off for
30 seconds, then turn on.
Microprocessor powers up OK.
b. Alarm 246 remains active.
Replace microprocessor. Refer to Section 5.4