Friedrich FPWC1 Service Manual

85 PB
TROUBLESHOOTING
Outdoor Fault Codes
Fault code Fault description Possible reasons for
abnormality
How to deal with Remarks
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".
46 IPM and control board
communication fault
"1.The cable between the
control board and the driver
board is connected loosely;
2.The cable between the
control board and the driver
board fails;
3.The driver board fails;
4.The control board fails."
"1.Reconnect the cable
between the control board
and the driver board;
2.Replace the
communication cable
between the control board
and the driver board;
3.Replace the driver board;
4.Replace the control
board."

Friedrich FPWC1 Specifications

General

Brand	Friedrich
Model	FPWC1
Category	Air Conditioner
Language	English