Perfect Aire 3PAMSHHQC18-MZO2, Technical & Service Manual

Page: 60 / 74

1 4
.TROUBLESHOOTING
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.
27
Expansion valve A
(gas pipe) sensor
fault
1. The wiring of the sensor for the
expansion valve A (gas pipe) is
connected loosely;
2. The sensor of the expansion valve
A (gas pipe) fails;
3. The sampling circuit fails.
1. Reconnect the wiring of the
sensor for the expansion valve
A (gas pipe);
2. Replace the sensor for the
expansion valve A (gas pipe);
3. Replace the outdoor control
board.
28
Expansion valve B
(
gas pipe
)
sensor
fault
1. The wiring of the sensor for the
expansion valve B (gas pipe)
connect is connected loosely;
2. The sensor of the expansion valve
B (gas pipe) fails;
3. The sampling circuit fails.
1. Reconnect the wiring of the
sensor for the expansion valve
B (gas pipe);
2. Replace the sensor for the
expansion valve B (gas pipe);
3. Replace the outdoor control
board.
29
Expansion valve C
(gas pipe) sensor
fault
1. The wiring of the sensor for the
expansion valve B (gas pipe)
connect is connected loosely;
2. The sensor of the expansion valve
C (gas pipe) is fails;
3. The sampling circuit fails.
1. Reconnect the wiring of the
sensor for the expansion valve
B (gas pipe);
2. Replace the sensor for the
expansion valve C (gas pipe);
3. Replace the outdoor control
board.
30
Expansion valve D
(gas pipe) sensor
fault
1. The wiring of the sensor for the
expansion valve B (gas pipe) is
connected loosely;
2. The sensor of the expansion valve
D (gas pipe) fails;
3. The sampling circuit fails.
1. Reconnect the wiring of the
sensor for the expansion valve
B (gas pipe);
2. Replace the sensor for the
expansion valve D (gas pipe);
3. Replace the outdoor control
board.
45 IPM fault
There are many reasons for this
failure. You can check the driver
board fault LED to further analyze
the fault code of the drive board
and to learn about what leads to the
fault and how to operate it. Specific
information can be seen in table 5,
table 6.
See attached "analysis of the
driving board fault".
Fault
code
Fault d escription Possible r eason s for a bnormality How to d eal w ith R emarks
56