C6.1.6/0117-1017/E
64
Code
Description
Cause
Action
Reset
E20
Lost phase error
Power supply phase
loss (3-phase unit)
The compressor will trip
Automatically: lost phase recover and H08
delay time out. If all three phases are present
but the controller still shows the error message,
set parameters H06 and H25 to "No".
L20
Lost phase lockout
Power supply phase
loss happened for H12
time within one hour
(3-phase unit)
The compressor will lock out
Hold "start" button for 5 sec or manual power
off and on. If all three phases are present but
the controller still shows the error message, set
parameters H06 and H25 to "No".
L21
Phase sequence lockout
Incorrect phase
sequence (3-phase
unit)
The compressor will lock out, rotation
field has to be changed
Manual power off, invert 2 phases and power
on. If the phase sequence is correct but the
controller still shows the error message, set
parameter H25 to "No".
E22
Phase imbalance
One phase voltage
lower than H18
percentage of 3 phases
average voltage
(3-phase unit)
The compressor is activated according
to H19
Automatically: voltage recover and H16 setting
delay time-out. If all three phases are present
but the controller still shows the error message,
set parameter H06 to "No".
E23
Over current
Electrical current larger
than H09 setting
The compressor will trip
Automatically: H08 delay time-out. If the current
is within the limits but the controller still shows
the error message, set parameter H06 to "No".
L23
Over current lockout
Over current happened
for H11 times within
one hour
The compressor will lock out (if H11
equal to 0, no compressor lockout)
Hold "start" button for 5 sec or manual power
off and on (if H11 equal to 0, compressor
automatically starts after H08 delay time-out). If
the current is within the limits but the controller
still shows the error message, set parameter
H06 to "No".
E24
Open run circuit error
Motor running winding
open (1-phase unit)
The compressor will trip
Automatically: H08 delay time-out.
L24
Open run circuit lockout
Motor running winding
open error happened
for H12 times within
one hour (1-phase unit)
The compressor will lock out (if H12
equal to 0, no compressor lockout)
Hold "start" button for 5 sec or manual power
off and on (if H12 equal to 0, compressor
automatically starts after H08 delay time-out).
E25
Open start circuit error
Motor start winding
open (1-phase unit)
The compressor will trip
Automatically: H08 delay time-out.
L25
Open start circuit lockout
Motor start winding
open error happened
for H12 times within
one hour (1-phase unit)
The compressor will lock out (if H12
equal to 0, no compressor lockout)
Hold "start" button for 5 sec or manual power
off and on (if H12 equal to 0, compressor
automatically starts after H08 delay time-out).
