Emerson Copeland OMTE-76D Application Manuallines page 49

Code Description
L20 Lost phase lockout
L21 Phase sequence lockout
E22 Phase imbalance
L22 Phase imbalance lockout
E23 Overcurrent compressor # 1
L23 Overcurrent lockout compressor # 1
E24 Open run circuit error
L24 Open run circuit lockout
E25 Open start circuit error
L25 Open start circuit lockout
E26 Undervoltage alarm
L26 Undervoltage lockout
E27 Overvoltage alarm
44
Cause Action
Power supply phase
loss happened H12
The compressor will lock out
times within one hour
(3-phase units)
Incorrect phase
sequence (3-phase The compressor will lock out
units)
One phase voltage
lower than H18
The compressor is activated according
percentage of 3 phases
to H19
average voltage
(3-phase units)
One phase voltage
lower than H18
The compressor is activated according
percentage of 3 phases
to H19 = 1: OFF the unit
average voltage
(3-phase units)
Electrical current higher
The compressor will trip
than H09 setting
Overcurrent happened
The compressor will lock out (if H11
H11 times within one
equal to 0, no compressor lockout)
hour
Not used
Not used
Not used
Not used
Voltage lower than H13
The compressor will trip
setting for H15 seconds
Undervoltage
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
Reset
Hold "start" button for 5 sec or manual power off
and on
Manual power off and on
Automatically as soon as voltage is recovered
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 5 sec or manual power off
and on (if H11 equal to 0, compressor starts
automatically after H08 delay time-out)
Automatically as soon as voltage is back within
acceptable range and H16 delay time-out
Hold "start" button for 5 sec or manual power off
and on (if H17 equal to 0, compressor starts
automatically when voltage is back within
acceptable range and H16 delay time-out)
Automatically as soon as voltage is back within
acceptable range and H16 delay time-out
AGL_Unit_LOCU_EN_Rev00