Panasonic S-25PY3E - Page 78

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Abnormal
display
Wireless remote
controller
receiver display
Alarm contents Error location
Operation Timer Standby
Outdoor Unit
L04
Operating
and standby
lamps blinking
simultaneously
Duplication of outdoor unit address •Checktheindoor/outdoorcontrolline*
L10 Outdoor unit capacity is not set or setting error
•ReplacetheoutdoorunitEEPROM
•Capacityvaluere-setting
L13
Indoor unit type setting error
Ty pe of indoor / outdoor units is different
•ReplacetheindoorunitEEPROM
•ChecktheoutdoorunitcontrolPCB
•CheckthetypeofIUandOU,andre-setaddress
L18 4-way valve locked trouble / operation failure
•Checkthe4-wayvalve
•Checkthe4-wayvalvewiring
•ChecktheoutdoorunitcontrolPCB
P03
Operating
and standby
lamp blinking
alternately
Compressor discharge temperature trouble
•Checktherefrigerantcycle(gasleak)
•Troublewiththeelectronicexpansionvalve
•Checkthedischargetemperaturesensor(TD)
P04
Condensing pressure trouble
Compressor discharge pressure trouble
•Checktherefrigerantcycle
•Valveblockage
•Heatexchangerobstruction
P05
Open phase detected
AC power supply trouble
•Checkthepowersupply
•Checkthereactorwiring
•ChecktheoutdoorunitcontrolPCB
•Checkthecompressorwiring
P07 HIC (IPM) temperature trouble
•ChecktheoutdoorunitcontrolPCB
•ChecktheHIC
•Compressorlocked
•Valveblockage
P13
Timer and
standby
lamp blinking
alternately
Valve error
Refrigerant circuit error
Wrong installation for refrigerant piping and wiring
•Valveblockage
•Checktherefrigerantcircuit
•Checktherefrigerantpipingandwiringinstallation
P14 O
2
sensor detected •InputfromtheO
2
sensor
P15
Operating
and standby
lamp blinking
alternately
Insufficient gas level detected
•Checktherefrigerantcycle(gasleak)
•Troublewiththeelectronicexpansionvalve
•Valve(orrefrigerantcircuit)blockage
P16 Compressor overcurrent trouble
•Layershortonthecompressor
•Compressorlocked
•ChecktheoutdoorunitcontrolPCB
P22
Outdoor unit fan motor trouble
Outdoor unit fan trouble
•Checktheoutdoorunitfanmotor,connector
•ChecktheoutdoorunitcontrolPCB
P29 Inverter compressor trouble
•Layershortonthecompressor
•ChecktheoutdoorunitcontrolPCB
•Checktheinvertercompressorwiring(Openphase/
Reverse phase)
•Compressoractuationfailure(includelock)
•Valve(orrefrigerantcircuit)blockage
P31 Indoor unit in group control trouble •Repairindoorunitwhichblinkingalarm
ON: Blinking: OFF:
* 3-Line : Connection cable between outdoor and indoor unit
2-Line : Inter-unit control wiring
01_330918_EU_Eng.indb 78 2021/9/9 11:27:06