Alarm Codes - Emerson Copeland Scroll User Manual

Alarm codes

Level
Warning
Alarm
Lock
Alarm
Description
code
E01 Suction pressure probe failure alarm
Condensing temperature probe
E02
failure alarm
Discharge temperature probe failure
E03
alarm
PHE vapor inlet temperature probe
E04
failure alarm
PHE vapor outlet temperature probe
E05
failure alarm
Ambient temperature probe failure
E06
alarm
E23 Over current alarm
L23 Over current lock
E26 Low voltage alarm
E27 Over voltage alarm
E40 High pressure switch alarm
L40 High pressure switch lock
24
Unit (including compressor) is running but some data reach unsafe area; alarm dry-contact will not close;
reset automatically
Unit (including compressor) may run not with full functions; alarm dry-contact will not close; reset
automatically
Unit (including compressor) stops working; alarm dry-contact will close; manual reset is needed
Alarm type
Hardware error
Hardware error
Hardware error
Hardware error
Hardware error
Hardware error
Electrical error
Electrical error
Electrical error
Electrical error
Refrigeration
system error
Refrigeration
system error
Descriptions
Possible reason
Probe failure or out of range No (ZXD/ZXV Unit Only)
Function: fan speed
Probe failure or out of range
control is disabled
Function: discharge
Probe failure or out of range temperature protection
is disabled
Function: PHE Superheat
Probe failure or out of range Control is disabled(ZXL/
ZXB /ZXV unit only)
Function: PHE Superheat
Probe failure or out of range Control is disabled(ZXL/
ZXB/ZXV unit only)
Related functions are
Probe failure or out of range
disabled
Compressor current is larger The compressor will be
than settings tripped
The compressor will be
Over current alarm happens
tripped and the unit will
frequently
be locked
Voltage is lower than
The compressor will be
settings; or voltage sensors
tripped
do not work
Voltage is higher than The compressor will be
settings tripped
The compressor will be
High pressure switch is open
tripped
The compressor will be
High pressure switch alarm
tripped and the unit will
happens frequently
be locked
Action Reset
Automatic Reset
when the probe
restarts working
Automatic Reset
when the probe
restarts working
Automatic Reset
when the probe
restarts working
Automatic Reset
when the probe
restarts working
Automatic Reset
when the probe
restarts working
Automatic Reset
when the probe
restarts working
Automatically with
time delay
Press "Start" >5 sec
or manually pow-
er-off and power-on
Automatically with
time delay
Automatically with
time delay
Automatically when
HP switch closes
Press "Start" >5 sec
or manually pow-
er-off and power-on