Emerson Copeland EazyCool OM 501 Series Application Manuallines page 63

Code Description
E20 Lost phase error
L20 Lost phase lockout
L21 Phase sequence lockout
E22 Phase Imbalance
L22 PHASE IMBALANCE LOCKOUT
E23 Over current
L23 Over current lockout
E24 Open run circuit error
L24
Open run circuit lockout
E25 Open start circuit error
C6.1.9/0617/E
Cause Action
Power supply phase The compressor will be tripped
loss(3 phases unit)
Power supply phase The compressor will be locked
loss happened for H12
time within one hour(3
phases unit)
Incorrect phase The compressor will be locked
sequence(3 phases
unit)
One phase voltage The compressor is activated according
lower than H18 to H19
percentage of 3 phases
average voltage(3
phases unit)
One phase voltage The compressor is activated according
lower than H18 to H19 = 1: OFF the unit.
percentage of 3 phases
average voltage(3
phases unit)
Electrical current larger The compressor will be tripped
than H09 setting
Over current happened The compressor will be locked(if H11
for H11 times within equal to 0, compressor no lockout)
one hour
Motor running winding The compressor will be tripped
open(single phase)
Motor running winding The compressor will be locked(if H12
open error happened equal to 0, compressor no lockout)
for H12 times within
one hour(single phase)
Motor start winding The compressor will be tripped
open(single phase)
Reset
Automatically: Lost phase recover and H08
delay time out
Hold "start" button for 5s or manual power on
and off
Manual power on and power off
Automatically: Voltage recover and H16 setting
delay time out
MANUAL RESET Voltage recover and H16
setting delay time out
Automatically: H08 delay time out
Hold "start" button for 5s or manual power on
and off(if H11 equal to 0, compressor
automatically start after H08 delay time out)
Automatically: H08 delay time out
Hold "start" button for 5s or manual power on
and off(if H12 equal to 0, compressor
automatically start after H08 delay time out)
Automatically: H08 delay time out
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