Air-Con ABXCI4H4S0, Service Manual, Page: 55 / 70

55
0 Normal
1

★ ★
The failure for
temperature
sensor of
outdoor coil
a.
The outdoor temperature sensor
loose;
b.
The outdoor temperature sensor
is failure;
c.
The indoor control board is
failure
2

★
x
Compressor
exhaust
temperature
sensor in
trouble
a.
the compressor exhaust
temperature sensor connect loose;
b.
the compressor exhaust
temperature sensor is failure;
c.
the outdoor control board is
failure
5
★

x
IPM module
protection
a.
The IPM board is failure;
b.
The outdoor fan is broken;
c.
The outdoor fan motor is failure;
d.
The outdoor fan has been
blocked ;
e.
The condenser is dirty;
f.
The outdoor unit has been
installed without standard.
6
x

x
AC voltage
higher or lower
protection
a.
the supply voltage is higher or
lower than normal;
b.
the inner supply voltage of the
unit is higher or lower than normal
7
★ ★
x
Communication
failure between
the indoor unit
and outdoor
unit
a.
the communication cable
connect loose;
b.
the communication cable is
failure;
c.
the connection between the filter
board and the outdoor control
board is incorrect or loose;
d.
the connection between the filter
board and the terminal is incorrect
or loose;
e.
the indoor control board is
failure;
f.
the PFC board is failure;
g.
the power board is failure;
h.
the outdoor control board is
failure.
8
Current
overload
protection
a.
the fan motor run abnormally;
b.
the condenser and evaporator is
dirty;
c.
the air inlet and outlet is
abnormally