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
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