Mini Vrf Alarm Codes - Panasonic R410A Service Manual

4. Mini VRF Alarm Codes

Alarms for outdoor units
Alarm Code
E06 Outdoor unit failed to receive serial communication signals from indoor unit.
E12 Automatic address setting start is prohibited.
E15 Automatic address setting alarm (too few units)
E16 Automatic address setting alarm (too many units)
E20 No indoor units at automatic address setting.
E25 Outdoor unit address setting failure (duplication)
F04 Compressor discharge temperature sensor (TD) trouble
F07 Liquid temperature sensor trouble at outdoor heat exchanger (C1)
F08 Outdoor air temperature sensor (TO) trouble
F12 Compressor suction temperature sensor (TS) trouble
F16 High-pressure sensor trouble
F31 Outdoor unit non-volatile memory (EEPROM) trouble
1
H03 Compressor CT sensor disconnected or short-circuit
H31 HIC trouble alarm
L04 Outdoor unit address duplication
2
L05 Indoor unit priority duplication (at priority indoor units)
L06 Indoor unit priority duplication (at non-priority indoor units) and outdoor unit
L10 Outdoor unit capacity not set
L18 4-way valve operation failure
3
P03 Compressor discharge temperature trouble
P16 Inverter compressor overcurrent alarm
P22 Fan motor trouble
P26 Inverter compressor high-frequency overcurrent alarm
4
P29 Inverter compressor missing phase or lock alarm
5
6
Alarm Meaning
5 - 6
Mini VRF SYSTEM
Trouble Diagnosis
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