57/77
Operation Manual
D
–EOMWC00A07-16_02EN
10.8.17
Maximum Number of Restart Alarm (condenserless units only)
This alarm indicates that for three consecutive times after the compressor start the evaporating pressure is under a
minimum limit for too much time
Symptom
Cause
Solution
Circuit status is Off.
The circuit is stopped.
Bell icon is moving on controller’s
display.
String in the alarm list:
Cx OffNbrRestarts
String in the alarm log:
Cx OffNbrRestarts
String in the alarm snapshot
Cx OffNbrRestarts
Ambient temperature is too low.
Check the operating envelope for this
machine.
Pressure drops between unit and
remote condenser exceeds the limit
for a proper operation.
Reset
Notes
Local HMI
Network
Auto
10.9 Circuit Pumpdown Stop Alarms
10.9.1
Low Discharge Superheat Fault
This alarm indicates that the unit has worked for too long with low discharge super heat.
Symptom
Cause
Solution
Circuit status is Off.
The circuit is switched off with the
shutdown procedure.
Bell icon is moving on controller’s
display. String in the alarm list:
CxCmp1 OffDishSHLo
String in the alarm log:
CxCmp1 OffDishSHLo
String in the alarm snapshot
CxCmp1 OffDishSHLo
EEXV is not working correctly.
It’s not opening enough or it’s moving
in the opposite direction.
Check if pump-down can be finished
for pressure limit reached;
Check expansion valve movements.
Check connection to the valve driver
on the wiring diagram.
Measure the resistance of each
winding, it has to be different from 0
Ohm.
Reset
Notes
Local HMI
Network
Auto
