6 - 5
Mini VRF SYSTEM
Trouble Diagnosis
6
3. Mini VRF Alarm Codes
Alarm code Alarm meaning Page
E06 Some indoor units do not respond to outdoor unit. 6-6
E12 Auto Address failed to start. 6-6
E15 Fewer indoor units are found in Auto Addressing than the setting on outdoor PCB. 6-6
E16 More indoor units are found in Auto Addressing than the setting on outdoor PCB. 6-7
E20 No indoor unit responded in Auto Addressing. 6-7
F04 Compressor discharge temperature sensor has failure. (DISCH) 6-8
F06 Outdoor unit heat exchanger gas temperature sensor has failure. (EXG) 6-9
F07 Outdoor unit heat exchanger liquid temperature sensor has failure. (EXL) 6-9
F08 Outdoor temperature sensor has failure. (TO) 6-9
F12 Compressor inlet temperature sensor has failure. (SCT) 6-9
F14 Subcooling heat exchanger temperature sensor has failure. (SCG) 6-9
F16 High pressure sensor has failure. (HPS) 6-10
F17 Low pressure sensor has failure. (LPS) 6-11
F31 EEPROM on outdoor unit PCB has failure. 6-11
H01 Compressor primary current is overcurrent. 6-11
H02 PFC is overcurrent or VDC is overvoltage. (Single phase only) 6-12
H03 Compressor current sensor is disconnected or shorted. 6-12
H05
Compressor discharge temperature sensor is disconnected, shorted or misplaced.
(DISCH)
6-13
H06 Low pressure sensor value is too low. 6-13
H31
Compressor HIC has failure. HIC is overcurrent or overheat. VDC is undervoltage or
overvoltage.
6-14,
6-15
L04 Duplicate system address setting on outdoor units. 6-16
L10 Capacity setting of outdoor unit is not correct. 6-16
L18 4-way valve has failure. 6-16
P03 Compressor discharge temperature is too high. 6-17
P04 High pressure swich is activated. 6-18
P05 AC power supply has abnormal. 6-19
P14 O
2
sensor has activated. 6-19
P16 Compressor secondary current is overcurrent. 6-20
P20 Too high load in refrigerant circuit. 6-20
P22 Outdoor unit fan motor has failure. 6-21
P29 Compressor start failure. Compressor is missing phase or reverse phase. 6-21
SM830258-01_欧州向け_1fan_mini_VRF.indb 5 18/03/13 17:29:21
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