Friedrich FPWC1 Service Manual

86 PB
TROUBLESHOOTING
Outdoor Fault Codes
Fault code Fault description Possible reasons for
abnormality
How to deal with Remarks
47 Too high discharge
temperature fault
"1. The refrigerant of the unit
is not enough;
2.The refrigerant of the unit
is not enough due to that the
installation pipe is longer.
3.Throttling service fails;
4.The outdoor ambient
temperature is too high."
"1.Check the welding point
to confirm whether the unit
has leakage point and then
add some refrigerant.
2.Add some refrigerant
referring to the installation
user manual;
3.Replace the throttling
service (such as capillary
expansion valve)
4.Normal protection."
48 The outdoor DC fan motor
fault (upper fan motor)
"1.The connecting wiring of the
up DC fan motor is loose;
2.The cord of the upper DC fan
motor fails;
3.The upper DC fan motor fails;
4.The drive circuit of the upper
DC fan motor fails;
5.The outdoor fan has been
blocked."
"1.Reconnect the wiring of
the up DC fan motor;
2.Replace the upper DC fan
motor;
3.Replace the upper DC fan
motor;
4.Replace the driver board
of the fan motor;
5.Check the outdoor fan and
ensure the outdoor fan can
run normally."
49 "the outdoor DC fan motor
fault
(down fan motor)"
"1. The wiring of the down DC
fan motor connect loose;
2. The cord of the down DC fan
motor is failure;
3. The down DC fan motor is
failure;
4. The drive circuit of the down
DC fan motor is failure;
5. The outdoor fan has been
blocked."
"1. Reconnect the wiring of
the down DC fan motor;
2. Replace the down DC fan
motor;
3. Replace the down DC fan
motor;
4. Replace the driver board
of the fan motor;
5. Check the outdoor fan
and ensure the outdoor fan
can run
normally."
THIS CODE IS ONLY
APPLICABLE TO
MODELS PRODUCED UP
TO AND INCLUDING THE
YEAR 2020.
50 Expansion valve E (gas
pipe) sensor fault
"1. The wiring of the sensor
for the expansion valve E (gas
pipe) is connected loosely;
2. The sensor of the expansion
valve E (gas pipe) fails;
3. The sampling circuit fails."
"1. Reconnect the wiring of
the sensor for the expansion
valve E (gas pipe);
2. Replace the sensor for
the expansion valve E (gas
pipe);
3. Replace the outdoor
control board."
THIS CODE IS ONLY
APPLICABLE TO THE
42K MULTIZONE
OUTDOOR UNIT.
53 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."
THIS CODE IS ONLY
APPLICABLE TO THE
42K MULTIZONE
OUTDOOR UNIT.
74 Indoor EEPROM Data 2
fault
EE in MCU is fails, the unit
can run, but the function user
has set is ineffective.
Replace EE data in MCU. THIS CODE IS ONLY
APPLICABLE TO
MODELS PRODUCED
IN THE YEAR 2021 OR
LATER. THIS CODE
CAN APPEAR IF THE
CIRCUIT BOARDS ARE
REPLACED ON OLDER
MODELS.

Friedrich FPWC1 Specifications

General

Brand	Friedrich
Model	FPWC1
Category	Air Conditioner
Language	English