AIRSYS 13E1C3 - Component Checks and Cleaning

Chapter 3: System Operation
Alarms
Page 51
Viewing Alarm History
To review the history of alarm codes, follow these steps:
1. From the main menu, press Up until the screen displays . Press Sel to confirm. This will display the
Stp.
2. Press Up until ALn displays. Press Sel to confirm. This will display the most recent alarm code.
3. Then press Up to review the history. When you find an alarm number you want to review, press Sel to
select it. This should display N1P, the first display in the alarm history menu.
4. Press Sel to display the code’s value, for example when N1P displays, press Sel to display the alarm
sequence such as 4.
5. After viewing the value, press Sel again to return to the Display code (such as N1P).
6. Use Up and Down to review the additional details listed in Table 21 and follow the same steps to view the
value and return to the code display.
7. Press Up and Down together to return to the alarm code display.
Table 21: Alarm History
Ref
Display
R/W
Description
C-40-1-1
N1P
R
Sequence number of the alarm (for example, 4 for the fourth alarm to be recorded)
C-40-1-2
N1C
R
Year of the alarm
C-40-1-3
N1L
R
Month of the alarm
C-40-1-4
N1E
R
Day of the alarm
C-40-1-5
N1F
R
Hour of the alarm
C-40-1-6
N20
R
Minute of the alarm
Clearing Alarm History
At significant points such as during yearly preventive maintenance you may want to clear the alarm history.
Warning. Alarm history is collected because it can be very helpful in identifying a problem with the system.
The alarm history should never be arbitrarily cleared by an operator. Only an AIRSYS authorized service technician
should clear the alarm history after all the alarms stored in history have been recorded.
To clear the alarm history, you need to supply a password to access the L05 menu.
Follow these steps to enter the L05menu and erase alarm history:
1. Press Down and Up simultaneously to display the main screen.
2. Press Up until the screen displays .
3. Then press Down and Sel simultaneously. The user terminal will display 0.
4. Enter the supplied password. The user terminal will display L01.
5. Press Up to display L05. Press the Sel button and the terminal will display F01.
6. Press the Up button to displayF3A; press the Sel button to display No on the PLD.
7. Use the Up button to flash Yes on the PLD and erase the alarm history.