Emerson Copeland EazyCool ZX Series Application Manuallines page 59

Code Description
E41 Low-pressure switch alarm
E43 Low pressure alarm
E44 Discharge line temperature alarm
L44 Discharge line temperature lockout
E45 High condenser pressure alarm
E46 High condenser temperature alarm
E47 EXV full open in EVI
E48 Refrigerant shortage error in EVI
E49 Pumpdown alarm
E50 High side floodback alarm
E60 Max pressure alarm of superheating Not used
54
Cause Action
Low-pressure switch
The compressor will trip
open
The pressure is below
Warning signal only
D29
Discharge line
temperature higher
The compressor will trip
than D22 for D24
seconds
Discharge line
temperature overheat The compressor will lock out (if D26
happened D26 times equal to 0, no compressor lockout)
within one hour
Not used
Condenser
temperature higher The compressor is activated according
than E58 for E59 to E60
minutes
EXV full open for F40
Warning signal only
minutes
EXV full open and PHE
superheat is higher
than (F28/F29.../F37 +
F39) Warning signal only
(F28/F29.../F37
depends on refrigerant
type)
Not used
The differential
temperature between
discharge and mid-coil
Warning signal only
is lower than H21 for
accumulated H22
minutes in H23 minutes
Reset
Automatically: low-pressure switch closed and
D28 delay time-out.
To deactivate the alarm function set parameter
D13 to "No".
Automatically: discharge line temperature lower
than D23 setting and D25 delay time-out.
Hold "start" button for 5 sec or manual power off
and on (if D26 equal to 0, compressor
automatically starts when discharge line
temperature is lower than D23 setting and D25
delay time-out).
Automatically: as soon as condenser
temperature is lower than E61.
Automatically: as soon as EXV is not at
maximum steps.
Automatically: as soon as PHE super heat is
lower than (F28/F29.../F37 + F39).
Automatically: as soon as differential
temperature between discharge and mid-coil is
higher than H21 for H24 minutes.
AGL_Unit_ZX_A2L_E_Rev00