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62-11389
7
−
107
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
Check microprocessor software revi-
sion.
Will be a 6 digit number, upgrade if required. Refer to
Section 5.4.2.
2
Reset Microprocessor
a. Place the Main Power switch in the
OFF position for 30 seconds, then
back to the desired position.
b. Check Active Alarm List.
Alarm is cleared - microprocessor is OK.
c. Alarm 245 remains active.
Unit will operate, but changes to the settings will not
be retained in the microprocessor memory. Download
and replace microprocessor. Refer to Section 5.7.
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, 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
a. Check set point setting.
Must be between -22 and +89.6
°
F (-30 and +32
°
C.)
b.Enter new set point.
Must be between -22 and +89.6
°
F (-30 and +32
°
C.)
2
Reset Microprocessor
a. Place the Main Power switch in the
OFF position for 30 seconds, then
back to the desired position.
Microprocessor powers up OK.
b. Alarm 246 remains active.
Download and replace microprocessor. Download
and replace microprocessor. Refer to Section 5.7.