Emerson Copeland Scroll User Manual

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

Emerson Copeland Scroll Specifications

General

Brand	Emerson
Model	Copeland Scroll
Category	Air Conditioner
Language	English