Self-Diagnosis Error Code Table - Panasonic CU-J24DBE5 Service Manual

12.6. Self-diagnosis error code table

• The display screen on the wired remote control unit and the self-diagnosis LEDs (green) on the outdoor unit printed circuit board
in the outdoor unit can be used to indicate where the location of a problem is.
Refer to the table below to remove the cause of the problem, and then re-start the air conditioner system.
• If the problem disappears and operation returns to normal, the CHECK display on the remote control unit will switch off, but the
self-diagnosis LED will remain illuminated until operation is resumed.
Wired remote Outdoor unit printed circuit board
control unit display
Abnormal Detail 2
display display
F15 -01
F16 -01
F17 -02
F20 -01
-02
F21 -01
F26 -01
F27 -01
-05
-01
-05
F30 -01
-02
F31 -01
-02
-06
-10
F32 -05
-06
F40 -21
-51
F41 -02
-12
F42 -11
LED
3 4 5 6 7 8
... illuminated.
Location or problem
Drain level Float switch problem Drain pump and drain pipe, indoor unit
Louver switch problem
D.C. Fan motor problem
Indoor temperature sensor
problem
Remote control thermistor
problem
Pipe temp. sensor problem
(indoor unit)
Remote control transmission
problem
Indoor/outdoor unit
disconnection problem
Indoor/outdoor unit connection
error problem
Indoor/outdoor unit
disconnection problem
Indoor/outdoor unit connection
problem
System problem
Open phase, or reversed phase
of supply
Suction pressure protection
High-pressure cut-off
4 way valve information
Refrigerant system problem
Compressor overcurrent
protection
Compressor discharge temp.
protection
Heat exchanger outlet
temperature sensor problem
Compressor discharge
temperature sensor problem
High pressure switch open circuit
problem
Low pressure sensor problem
Current detector open circuit
108
Check location
connectors CN-DRMTR&CN-TH2
Louver motor, decorative panel connection
terminal, or indoor unit louver motor
connectors
Indoor unit D.C.Fan motor or connection
terminals
Indoor temperature sensor lead wire or indoor
unit connector or CN-TH2
Remote control thermistor
Pipe temperature sensor lead wire or indoor
unit connector CN-TH1
Remote control unit cable and connection
terminals
Indoor/outdoor unit connection cable and
connection terminals, or indoor unit and
outdoor unit power supplies (indoor side)
Indoor/outdoor unit connection wire (indoor
side)
Indoor/outdoor unit connection cable and
connection terminals, or indoor unit and
outdoor unit power supplies (outdoor side)
Indoor/outdoor unit connection wire (outdoor
side)
Total capacity for the number of indoor units is
insufficient, or over check the total capacity
and the number of indoor units
Check the main power supply terminal board
connections, or switch over any two of the
power supply wires.
Insufficient refrigerant
Check the Refrigeration system
Check the 4 way valve or lead wire
Insufficient refrigerant or valve operation
(closed)
Open phase or lock in compressor
Insufficient refrigerant
Heat exchanger outlet temperature sensor
(COND TEMP) lead wire, connector CN-TH1
Compressor discharge temperature sensor
(DIS T. TEMP) lead wire, connector CN-DIS
High-pressure switch lead wire, connector
CN-PSW1
Low pressure sensor lead wire, connector
Outdoor unit P.C. B (NOISE FILTER) fault or
connector ACN2