Friedrich Floating Air Pro Multi-Zone FPHMR42A3A Service Manual page 259

The following is the fault code table of indoor.
Indoor Fault Code
Fault
Fault Description
code
51 D rainage protection
Mode Conflict Fault
55
C ommunication
between Indoor
64
& Outdoor unit
Fault
72 Indoor fan motor fault
Indoor EEPROM
73 Data
1 fault
259
TROUBLESHOOTING
Sheet 2 Indoor Fault code
Possible Reason of Abnormality
1. The water level of the drain
pan exceed safe level;
2. The cable of the water level
switch connect loose;
3.The water level switch is failure;
4. The control board is failure.
The user set the conflicting mode for
more than two indoor units
1. The connection cable between
the indoor unit and the outdoor
unit connect wrong;
2. The communication cable
connect loose;
3.The communication cable
between the indoor unit and the
outdoor unit is failure or the
cable between the indoor control
board to terminal is failure or the
cable between the outdoor
control board to the terminal is
failure;
4. The indoor control board is
failure;
5. The outdoor control board is
failure.
1. The cable of the indoor fan
motor connect loose;
2. The cable of the indoor fan
motor is failure;
3. The indoor fan motor is failure;
4. The indoor control board is
failure.
1. Indoor EE components is failure;
2. The control circuit of the EE
components is failure;
3. The EE components has
inserted with opposite
direction.
How to Deal With
1.1 Check whether there are
something to block the drain
hose or the height of the
drain hose is too high;
1.2 Check the water pump and
replace the water pump if
the water pump is failure;
2. Reconnect the cable of
water level switch refer to
the wiring diagram;
3. Replace the water level
switch;
4. Replace the control board.
Reset the operate mode for the
indoor unit, for the one outdoor
unit, the user should avoid to set
the conflicting operate mode with
the indoor units .
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 wiring diagram;
4. Replace the indoor control
board;
5. Replace the outdoor control
board.
1. Reconnect the cable of the
fan motor;
2. Replace the cable of the
motor;
3. Replace the fan motor;
4. Replace the indoor control
board;
5. Check the indoor fan and
ensure the indoor fan can
run normally.
1. Replace the EE components;
2. Replace the indoor control
board;
3. Reassembly the EE
been
components of the indoor
control board.
Re marks
the
fan