Troubleshooting - Alarm History; Compressor Motor Protection; System Pressure Protection; High-Pressure Safety Switch - Emerson Copeland EazyCool ZXDI Series Application Manuallines

2.16 Troubleshooting – Alarm history
The controller records the total number of alarm activations (max 50) in the alarm menu (see
Appendix 5).
Action Key or display
Enter menu
Waiting for action
Enter section list
Select active alarm
code from list
Select the alarm to
see the detailed rtC
information
Select detailed
information from
active alarm list
Exit menu
Table 17: How to check the alarm list

2.17 Compressor motor protection

The electronic controller protects the compressor motor against the following:
▪
over current
▪
phase loss
▪
incorrect phase rotation
▪
voltage imbalance
If the compressor motor current exceeds a predefined (non-adjustable) current limit, the electronic
controller shuts the unit down and generates an error signal. For this function two of the main
phase supply lines to the compressor (compressor via the contactor) are routed through the
current sensors.

2.18 System pressure protection

2.18.1 High-pressure safety switch

A high-pressure switch is registered by the electronic board. The sensing device is a non-
adjustable, high-pressure switch that will open in the event of an abnormally high discharge
pressure (cut-out 28.8 bar).
C6.1.10/0118-0318/E
Notes
Push and release the ALR key.
The menu to change the section will be entered. The
SEC
alarm list section is active.
Press SET to confirm. The following list will be
available to select the proper network function.
Scroll the list of active alarms by alarm number (letter
+ number, A01-A50).
or
Press to see the alarm name or code.
Press to see the next active alarm.
Enter the sub menu with alarm time details.
With the rtC activated:
The Hur (hour) parameter is displayed.
Press
Press
Press
Press
Press
Press
Press
Press
or
Press
Note: The clock info indicates the START time of the
alarm.
Without the rtC activated:
The COn (hours) parameter is displayed.
Press to see the compressor working hours.
To exit: press
pressing any key.
Press
seconds without pressing any key.
to see the alarm hour.
: Min is displayed.
to see the alarm minute.
: dAy is displayed.
to see the alarm day.
: MOn is displayed.
to see the alarm month.
: YEA is displayed.
to see the alarm year.
or wait for 15 seconds without
simultaneously or wait for about 10
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