7
7
.
.
T
T
R
R
O
O
U
U
B
B
L
L
E
E
S
S
H
H
O
O
O
O
T
T
I
I
N
N
G
G
DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3
106
Fault
code
Fault Description
Possible Reason of Abnormality
How to Deal With
REMARKS
4.Indoor control board is failure.
57
Water tank water
temperature sensor 2fault
1. The cable of the water tank water
temperature sensor 2 connect loose;
2. The cable of the water tank water
temperature sensor 2 circuit is
abnormal;
3. The cable of the water tank water
temperature sensor 2 is failure.
4.Indoor control board is failure.
1. Reconnect the cable of the water
temperature sensor 2;
2. Change the cable .
3. Replace the water
temperature sensor 2 .
4.Repalce indoor control board .
Only for heat
pump water
heater
58
Coil temperature sensor
(liquid tube)fault
1.The coil temperature sensor (liquid
tube)connect loose;
2.The coil temperature sensor(liquid
tube) is failure;
3.The control board is failure
1.Reconnect the coil temperature sensor;
2.Replace the coil temperature sensor
components;
3.Replace the control board components.
Only for heat
pump water
heater
59
Liquid tube temperature
protect
1.The resistance of temperature
sensor is abnormal.
2.Control board circuit is abnormal.
3.Water temperature in tank is too
high(over 70℃)；
4.No water in tank.
1.Change temperature sensor.
2.Change Control board .
3.Normally protection,should lower water
temperature；
4.Open fill pump to supply water;Check
whether there is leakage occur.
Only for heat
pump water
heater
60
water shortage protect
1.Water shortage in tank;
2.Water temperature sensor in tank is
abnormal.
3.Control board is abnormal.
1.Open fill pump to supply water;Check
whether there is leakage occur.
2.Change temperature sensor.
3.Change Control board .
Only for heat
pump water
heater
61
Indoor address repeat fault
Two or more two indoor units has set
with the same address
Reset the address of the indoor unit
and it should avoid the address
repeat.
For VRF
62
Remote address repeat
fault
When the same indoor unit with more
than one wiring controller, a number of
the
address of the wiring controller is same
Reset the address of the wiring
controller and avoid the address of
the wiring controller repeat.
For VRF
64
Communication between
Indoor & Outdoor unit
Fault
1. The connection cable between the
indoor
unit and the outdoor unit connect
wrong;
2.The communication cableconnect
loose;
3.The communication cable between
the
1. Reconnect the connection cable
refer to the indoor and outdoor
wiring diagram;
2. Reconnect the communication
cable refer to the indoor and outdoor
wiring diagram;
3. Replace the communication cable
refer to the indoor and outdoor
