Shivaki SRH-PM18DC, Service Manual

Page: 48 / 69

7.TROUBLE SHOOTING
fault tube
）
is failure;
3.The sampling circuit is abnormally
expansion valve D(thin tube);
3. Replace the outdoor control board.
27
the sensor of the
expansion valve
A
（
thick tube
）
fault
1. The wiring of the sensor for the expansion
valve A(thick tube) connect loose;
2.The sensor of the expansion valve A
（
thick
tube
）
is failure;
3.The sampling circuit is abnormally
1. Reconnect the wiring of the sensor
for the expansion valve A(thick tube);
2. Replace the sensor for the
expansion valve A(thick tube);
3. Replace the outdoor control board.
28
the sensor of the
expansion valve
B
（
thick tube
）
fault
1. The wiring of the sensor for the expansion
valve B(thick tube) connect loose;
2.The sensor of the expansion valve B
（
thick
tube
）
is failure;
3. The sampling circuit is abnormally
1. Reconnect the wiring of the sensor
for the expansion valve B(thick tube);
2. Replace the sensor for the
expansion valve B(thick tube);
3. Replace the outdoor control board.
29
the sensor of the
expansion valve
C
（
thick tube
）
fault
1. The wiring of the sensor for the expansion
valve C(thick tube) connect loose;
2.The sensor of the expansion valve C
（
thick
tube
）
is failure;
3.The sampling circuit is abnormally
1. Reconnect the wiring of the sensor
for the expansion valve C(thick tube);
2. Replace the sensor for the
expansion valve C(thick tube);
3.Replace the outdoor control board.
30
the sensor of the
expansion valve
D
（
thick tube
）
fault
1. The wiring of the sensor for the expansion
valve D(thick tube) connect loose;
2.The sensor of the expansion valve D
（
thick
tube
）
is failure;
3.The sampling circuit is abnormally
1. Reconnect the wiring of the sensor
for the expansion valve D(thick tube);
2. Replace the sensor for the
expansion valve D(thick tube);
3. Replace the outdoor control board
components.
41
the current
sensor fault
1.The wiring of the current sensor connect
wrong or loose;
2.The current sensor is failure;
3. The sampling circuit of the current sensor
is failure.
1.Reconnect the wiring of the current
sensor;
2.Replace the current sensor;
3.Replace the outdoor control board.
42
the voltage
sensor fault
1.The wiring of the voltage sensor connect
wrong or loose;
2. The voltage sensor is failure;
3. The sampling circuit of the voltage sensor
is failure.
1. Reconnect the wiring of the current
sensor;
2. Replace the voltage sensor;
3. Replace the outdoor control board.
45 the drive fault
1.The wiring of the drive board connect
loose;
2. The wiring of the drive board connect
wrong;
3.The supply power is abnormal;
4. The drive board is failure.
5.The connection cable of the compressor
connect loose;
6.The connection cable of the compressor
connect wrong.
7.The compressor is failure;
1.Reconnect the wiring of the drive
board;
2.Reconnect the wiring of the drive
board;
3.Normally protection;
4.Replace the drive board.
5.Reconnect the wiring of the
compressor;
6.Reconnect the wiring of the
compressor refer to the outdoor
wiring diagram, please note the U port
of the drive board should connect with
RED color cable. The V port of the
drive board should connect with White
color cable, the W port of the drive
board should connect with BLUE color
cable.
7.Check
the coil resistance of the
compressor between the terminal U,
V, W, the value is 0.95
Ω
，
if it is not
meet the value, it means the
compressor is failure and you should
replace the compressor.
46
the
communication
1.The cable between the control board and
the drive board connect loose;
1.Reconnect the cable between the
control board and the drive board;