Way Alarm Codes - Panasonic U-8ME2E8 Service Manual & Test Run Service Manual

3. 2WAY Alarm Codes

With types 8HP, 10HP and 12HP, only one INV compressor is supplied.
With types 14HP and 16HP, two INV compressors are supplied.
Alarm code
E06 Outdoor unit receiving failure from indoor unit
E12 Prohibit starting auto address setting
E15 Auto address alarm (A small number of indoor units)
E16 Auto address alarm (A large number of indoor units)
E20 No indoor unit during auto address setting
E24 Receiving failure of relay control unit from outdoor unit(s)
E25 Failure of outdoor unit address setting (Duplicative)
E26 Inconsistencies in number of outdoor units
E29 Failure of outdoor unit to receive relay control unit
E31 Wiring error between the P.C. board ( [L-Pow], [HIC] wire)
F04 Compressor 1 discharge temperature sensor abnormal (DISCH1)
F05 Compressor 2 discharge temperature sensor abnormal (DISCH2)
F06 Outdoor unit heat exchanger 1 gas (inlet) temperature sensor abnormal (EXG1)
F07 Outdoor unit heat exchanger 1 liquid (outlet) temperature sensor abnormal (EXL1)
F08 Outdoor temperature sensor abnormal (TO)
F12 Compressor inlet temperature sensor abnormal (SCT)
F14 Supercooling gas temperature sensor abnormal (SCG)
F16 High pressure sensor abnormal, high-load (HPS)
F17 Low pressure sensor abnormal (LPS)
F23 Outdoor unit heat exchanger 2 gas (inlet) temperature sensor abnormal (EXG2)
F24 Outdoor unit heat exchanger 2 liquid (outlet) temperature sensor abnormal (EXL2)
F31 Outdoor unit nonvolatile memory (EEPROM) error
H01 Compressor 1 abnormal current values (Overcurrent)
H11 Compressor 2 abnormal current values (Overcurrent)
H03 Compressor 1 CT sensor disconnected, short-circuit
H05 Compressor 1 discharge temperature sensor disconnected
H06 Low pressure abnormal lowering
H07 Oil loss - error
H08 Oil sensor (connection) error 1
H13 Compressor 2 CT sensor disconnected, short-circuit
H15 Compressor 2 discharge temperature sensor disconnected
H27 Oil sensor (connection) error 2
H31 Compressor 1 HIC alarm
H21 Compressor 2 HIC alarm
L04 Outdoor unit address settings duplicated
L10 Outdoor unit capacity settings not made
L17 Inconsistencies in outdoor unit models
L18 4-way valve coil disconnected, line disconnected
Alarm meaning
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2WAY SYSTEM
Trouble Diagnosis
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