Emerson Copeland EazyCool ZX Series Application Manuallines page 58

Code Description
E26 Under voltage alarm
L26 Under voltage lockout
E27 Over voltage alarm
L27 Over voltage lockout
E28 Compressor built-in protector trip
E30 Main power lost
E40 High-pressure switch alarm
L40 High-pressure switch lockout
AGL_Unit_ZX_A2L_E_Rev00
Cause Action
Voltage lower than H13
The compressor will trip
setting for H15 seconds
Under voltage
The compressor will lock out (if H17
happened H17 times
equal to 0, no compressor lockout)
within one hour
Voltage higher than
H14 setting for H15 The compressor will trip
seconds
Over voltage happened
The compressor will lock out (if H17
H17 times within one
equal to 0, no compressor lockout)
hour
Compressor built-in
Warning signal only
thermal protector trips
Controller power supply
lost
High-pressure switch
The compressor will trip
open
High-pressure switch
open error happened The compressor will lock out (if D15
D15 times within one equal to 0, no compressor lockout)
hour
Reset
Automatically: voltage is back within acceptable
range and H16 delay time-out. If the voltage
corresponds to the required voltage but the
controller still shows the error message, set
parameter H06 to "No".
Hold "start" button for 5 sec or manual power off
and on (if H17 equal to 0, compressor
automatically starts when voltage is back within
acceptable range and H16 delay time-out). If
the voltage corresponds to the required voltage
but the controller still shows the error message,
set parameter H06 to "No".
Automatically: voltage is back within acceptable
range and H16 delay time-out. If the voltage
corresponds to the required voltage but the
controller still shows the error message, set
parameter H06 to "No".
Hold "start" button for 5 sec or manual power off
and on (if H17 equal to 0, compressor
automatically starts when voltage is back within
acceptable range and H16 delay time-out). If
the voltage corresponds to the required voltage
but the controller still shows the error message,
set parameter H06 to "No".
Automatically: as soon as electrical current is
detected. Check the voltage coming to the
compressor.
Automatically: high-pressure switch closed and
D14 delay time-out. If the high pressure is
below the limit but the alarm is still on, check
fuse F3.
Hold "start" button for 5 sec or manual power off
and on (if D15 equal to 0, compressor
automatically starts when high-pressure switch
is closed and D14 delay time-out). If the high
pressure is below the limit but the alarm is still
on, check fuse F3.
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