VRV Series
i
Applicable Models ................................................... 2
1. Symptom-based Troubleshooting ................... 12
2. Troubleshooting by Remote Controller ........... 18
2.1 The INSPECTION / TEST Button .....................18
2.2 Self-diagnosis by Wired Remote Controller ......19
2.3 Self-diagnosis by
Wireless Remote Controller ..............................22
2.4 Error Codes and Description ............................24
2.5 Error Codes - Sub Codes ..................................35
3. Troubleshooting by Indication on
the Remote Controller ..................................... 46
3.1 A0 External Protection Device
Abnormality .......................................................46
3.2 A1 PCB Abnormality ..........................................48
3.3 A3 Drain Level Control System (S1L)
Abnormality .......................................................49
3.4 A6 Fan Motor (M1F) Lock, Overload .................52
3.5 A6 Indoor Unit Fan Motor Abnormality ..............55
3.6 A6 Overload/Overcurrent/
Lock of Indoor Unit Fan Motor ..........................57
3.7 A7 Swing Flap Motor (M1S) Abnormality ..........63
3.8 A8 Power Supply Voltage Abnormality ..............66
3.9 A9 Electronic Expansion Valve Coil Abnormality /
Dust Clogging ...................................................68
3.10 AF Drain Level above Limit ................................71
3.11 AJ Capacity Determination Device
Abnormality .......................................................73
3.12 C1 Transmission Error
(between Indoor unit PCB and Fan PCB) .........75
3.13 C4 Thermistor for Liquid Pipe Abnormality ........78
3.14 C5 Thermistor for Gas Pipe Abnormality ...........80
3.15 C6 Combination Abnormality
(between Indoor unit PCB and Fan PCB) .........82
3.16 C9 Thermistor for Suction Air Abnormality ........84
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