Panasonic U-72MF2U9 Installation Instructions Manual page 56

Remote control display
E09 Two or more remote controllers are set as main on R1-R2 link.
E12 Auto Address failed to start.
E14 Two or more indoor units are set as main, in the group controlled indoor units.
E15 Fewer indoor units are found in Auto Addressing than the setting on outdoor PCB.
E16 More indoor units are found in Auto Addressing than the setting on outdoor PCB.
E18 No response from sub indoor to the main indoor unit in group control wiring.
E20 No indoor unit responded in Auto Addressing.
E24 No response from sub outdoor unit.
E25 The outdoor unit address is duplicating.
E26 The number of responding outdoor units does not match with the setting on the main outdoor unit.
E27 Improper wiring between main and sub outdoor units.
E29 No response from main outdoor unit.
E30 The outdoor unit is having error in sending serial communication signal on main-sub communication line.
E31 Error in communication inside outdoor unit control box.
F01 E1 thermistor on liquid side of indoor heat exchanger has failure. (E1)
F02 Indoor unit set as single split. (E2)
F03 E3 thermistor on gas side of indoor heat exchanger has failure. (E3)
F04 DISCH1 thermistor at the discharge of 1st compressor reading is abnormal.
F05 DISCH2 thermistor at the discharge of 2nd compressor reading is abnormal.
F06 EXG1 thermistor at the gas side of 1st heat exchanger of the outdoor unit has failure. (EXG1)
F07 EXL1 thermistor at the liquid side of 1st heat exchanger of the outdoor unit has failure. (EXL1)
F08 TO thermistor for outdoor ambient air temperature has failure. (TO)
F10 TA thermistor for intake air temperature (room temperature) of the indoor unit has failure. (TA)
F11 BL thermistor for supply air temperature of the indoor unit has failure. (BL)
F12 SCT thermistor at the suction refrigerant of compressors has failure. (SCT)
F14 SCG thermistor at the outlet of subcooling heat exchanger in outdoor unit has failure. (SCG)
F16 High pressure sensor of the outdoor unit has failure. (HPS)
F17 Low pressure sensor of the outdoor unit has failure. (LPS)
F23 EXG2 thermistor at the gas side of 2nd heat exchanger of the outdoor unit has failure. (EXG2)
F24 EXL2 thermistor at the liquid side of 2nd heat exchanger of the outdoor unit has failure. (EXL2)
F29 EEPROM on indoor unit PCB has failure.
F31 EEPROM on outdoor unit PCB has failure.
H01 Overcurrent in 1st compressor.
H03 Current sensor for the 1st compressor is disconnected or shorted.
H05 DISCH1 thermistor at the discharge of 1st compressor is disconnected, shorted or misplaced. (DISCH1)
H06 Low pressure is too low.
H07 Low on oil or the oil recovery circuit has restriction.
H08 OIL1 thermistor for the oil of 1st compressor has failure. (OIL1)
H11 Overcurrent in 2nd compressor.
H13 Current sensor for the 2nd compressor is disconnected or shorted.
H15 DISCH2 thermistor at the discharge of 2nd compressor is disconnected, shorted or misplaced. (DISCH2)
H21 HIC for 2nd compressor has failure. Overcurrent or overheat of HIC.
H27 OIL2 thermistor for the oil of 2nd compressor has failure. (OIL2)
H31 HIC for 1st compressor has failure. Overcurrent or overheat of HIC.
L01 Indoor unit address setting has error. (No main indoor unit in group control.)
L02 Indoor unit model does not match with the outdoor unit model. (Multi-split/mini-split)
L03 Two or more indoor units are set as main in group control.
L04 Duplicate system address setting on outdoor units.
L05 Two or more indoor units are set as priority indoor unit.
L06 Two or more indoor units are set as priority indoor unit.
L07 Group control wiring is detected for indoor unit set as individual control.
L08 Indoor unit address is not set.
L09 Capacity setting of indoor unit is not correct.
L10 Capacity setting of outdoor unit is not correct.
L11 Incorrect wiring of remote group control wiring (in case of shared solenoid valve kit)
L13 Indoor unit model does not match with outdoor unit.
L17 Model mismatch between outdoor units in one refrigerant circuit.
P01 Indoor fan motor activated thermal protector.
P03 1st compressor discharge temperature too high.
Alarm contents
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