Service & Parts Manual (2019, 2020, 2021, 2022)

240 PB
TROUBLESHOOTING
Outdoor Fault Codes
Fault code Fault description Possible reasons for
abnormality
How to deal with Remarks
18 AC voltage is abnormal 1.The AC voltage>275V
or <160V. 2.The AC
voltage of sampling
circuit on the driver
board is abnormal.
"1. Normal protection,
please check the supply
power;
2. Replace the driver
board."
19 Suction temperature
sensor fault
"1.The wiring of the
suction tempe- rature
sensor is connected
loosely;
2.The suction
temperature sensor
fails;
3.The sampling circuit is
abnormal."
"1.Reconnect the
wiring of the suction
temperature sensor;
2.Replace the suction
temperature sensor;
3.Replace the outdoor
control board."
22 The defrosting sensor
fault
"1.The wiring of the
defrosting sensor
is connected loosely;
2.The defrosting sensor
fails;
3.The sampling circuit is
abnormal."
"1. Reconnect the wiring
of the defrosting sensor;
2. Replace the
defrosting sensor;
3. Replace the outdoor
control board."
23 Expansion valve A tube
(thin) sensor fault
"1. The wiring of
the sensor for the
expansion valve A(thin
tube) connect loose;
2. The sensor for the
expansion A(thin tube)
is failure;
3. The sampling circuit
is abnormally"
"1. Reconnect the wiring
of the sensor for the
expansion valve A (thin
tube);
2. Replace the sensor
for the expansion valve
A (thin tube);
3. Replace the outdoor
control board."
24 Expansion valve B (thin)
tube sensor fault
"1. The wiring of
the sensor for the
expansion valve B (thin
tube) connect loose;
2.The sensor for the
expansion valve B(thin
tube) is failure;
3.The sampling circuit is
abnormally"
"1. Reconnect the wiring
of the sensor for the
expansion valve B(thin
tube);
2.Replace the sensor
for the expansion valve
B(thin tube);
3. Replace the outdoor
control board."
25 Expansion valve C
(liquid) pipe sensor
fault
"1. The wiring of
the sensor for the
expansion valve
C (liquid pipe) is
connected loosely;
2. The sensor of the
expansion valve C
(liquid pipe) fails;
3. The sampling circuit
fails."
"1. Reconnect the wiring
of the sensor for the
expansion valve C
(liquid pipe).
2. Replace the sensor
for the expansion valve
C (liquid pipe);
3. Replace the outdoor
control board."
26 Expansion valve D
(liquid) pipe sensor
fault
"1.The wiring of
the sensor for the
expansion valve
D (liquid pipe) is
connected loosely;
2.The sensor of the
expansion valve D
(liquid pipe) fails;
3.The sampling circuit
fails."
"1. Reconnect the wiring
of the sensor for the
expansion valve D
(liquid pipe);
2. Replace the sensor
for the expansion valve
D (liquid pipe);
3. Replace the outdoor
control board."