Panasonic S-22KA1E5 - 18 Troubleshooting Guide

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18. Troubleshooting Guide
Outdoor Unit
Error Code
Abnormality Control Areas to verify
F27-01
Indoor / outdoor unit communication line
disconnection error
Indoor / outdoor unit communication line, lead
wire terminal.
F30-01
Total quantity / capacity of connected indoor
unit error
Total quantity / capacity of connected indoor
unit is insufficient or over.
F30-02 Noise filter circuit (capacitor) error. Outdoor unit main PCB.
F31-01 Low pressure protection
Refrigerant cycle, 2 or 3-way valve close,
insufficient refrigerant.
F31-02 High pressure protection
Refrigerant cycle, 2 or 3-way valve close,
overcharged refrigerant.
F31-06 4-way valve error
4-way valve, outdoor unit noise filter PCB,
connector CN-HOT.
F31-08 Indoor unit freezing error Abnormal indoor unit expansion valve.
F32-04 IPM temperature protection Outdoor unit main PCB, power supply.
F32-05 Total current protection Compressor locked, refrigerant cycle.
F32-06 Compressor discharge temperature protection Insufficient refrigerant.
F32-08 PFC protection Outdoor unit main PCB.
F32-09 DC peak current error
IPM abnormal, compressor locked,
compressor lead wire connection, outdoor unit
main PCB.
F32-10 Compressor rotation error
IPM abnormal, compressor locked,
compressor lead wire connection, outdoor unit
main PCB.
F35-02 Outdoor DC fan motor error
Outdoor DC fan motor, outdoor unit main PCB,
connector CN-FM1, CN-FM2.
F40-01 Outdoor temperature sensor error
Outdoor temperature sensor lead wire, outdoor
unit main PCB, connector CN-TH1.
F40-11 Compressor suction temperature sensor error
Compressor suction temperature lead wire,
outdoor unit main PCB, connector CN-TH2, 3-
way valve close.
F40-21
Outdoor heat exchanger temperature sensor
error
Outdoor heat exchanger temperature sensor
lead wire, outdoor unit main PCB, connector
CN-TH1.
F40-31 DEF temperature sensor error
DEF temperature sensor lead wire, outdoor
unit main PCB, connector CN-TH2.
F40-51
Compressor discharge temperature sensor
error
Compressor discharge temperature sensor
lead wire, outdoor unit main PCB, connector
CN-DIS.
F41-02 High pressure switch disconnection error
High pressure switch lead wire, outdoor unit
main PCB, connector CN-PSW1.
F41-12 Low pressure switch disconnection error
Low pressure switch lead wire, outdoor unit
main PCB, connector CN-PSW2.
F42-11 Outdoor CT disconnection error Outdoor unit main PCB.
F44-01 IPM temperature sensor error Outdoor unit main PCB.
F45-01 Outdoor address double registration error Outdoor unit address.