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19
★
20
21
22
24
26
27
33
o
x
34
o
x
★
36
Compressor
drive in
trouble
Outdoor fan
motor locked
rotor
protection
Outdoor coil
anti-overload
protection
with cooling
Compressor
pre heating
process
Chip in
outdoor
board in
trouble
Overheated
outdoor
radiator
Protection
against too
high system
pressure
The failure
for
x
temperature
★
sensor of
indoor room
The failure
for
temperature
★
x
sensor of
indoor coil
temperature
★
Communicati
on failure
between the
indoor unit
and outdoor
unit
a. the outdoor drive board is failure;
b. the compressor is failure
c. the outdoor control board is failure
a. the connection of the outdoor fan
motor is loose;
are something block the outdoor fan;
c. the fan motor is failure;
d. the outdoor control board is failure
a. the refrigerant is too much;
b. the outdoor fan motor is failure;
c. the outdoor fan is broken;
d. the condenser is dirty;
e. the air inlet and air outlet of the
indoor unit and the outdoor unit is not
normally
it is normal mode in cold weather
a. Using the wrong drive board;
b.Using the wrong compressor.
a. Radiator sensor fails
b. Detection circuit of the sensor
on the control panel fails
a. The pressure switch fails
b. The pressure detection switch on
the control panel fails
c. The measured value of system
pressure exceeds the limit
a. The indoor room temperature sensor
loose;
b. The indoor room temperature sensor
is failure;
c. The indoor control board is failure.
a. The indoor coil temperature sensor
loose;
b. The indoor coil temperature sensor
is failure;
c. The indoor control board is failure.
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
52
b. there
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