9. Error Codes
# Indoor Unit Type Error Code Description
1 DK_SkyAir | DK_VRV A0 "External protection device activated"
2 DK_SkyAir | DK_VRV | DK_RA A1 "Malfunction of ID unit PCB"
3 DK_SkyAir | DK_VRV | DK_RA A3 "Malfunction of drain level control system"
4 DK_RA A5 "High pressure control in heating freeze-up protection control in cooling"
5 DK_SkyAir | DK_VRV | DK_RA A6 "Fan motor locked overload overcurrent"
6 DK_SkyAir | DK_VRV A7 "Malfunction of swing flap motor"
7 DK_SkyAir | DK_VRV A8 "Malfunction of power supply"
8 DK_VRV A9 "Malfunction of electronic expansion valve drive"
9 DK_SkyAir | DK_VRV | DK_RA AH "Malfunction of dust collector of air cleaner"
10 DK_SkyAir | DK_VRV AJ "Malfunction of capacity setting (ID unit PCB)"
11 DK_SkyAir | DK_VRV AF "Malfunction of a humidifier system"
12 DK_SkyAir | DK_VRV C1 "Failure of transmission (between ID unit PCB and fan PCB)"
13 DK_SkyAir | DK_VRV | DK_RA C4 "Malfunction of liquid pipe thermistor for heat exchanger"
14 DK_VRV | DK_RA C5 "Malfunction of gas pipe thermistor for heat exchanger"
15 DK_SkyAir | DK_VRV C6 "Malfunction of fan motor control driver"
16 DK_RA C7 "Front panel driving motor fault"
17 DK_SkyAir | DK_VRV | DK_RA C9 "Malfunction of suction air thermistor"
18 DK_VRV CA "Malfunction of discharge air thermistor"
19 DK_SkyAir | DK_RA CC "Malfunction of humidity sensor system"
20 DK_SkyAir | DK_VRV CJ "Malfunction of thermostat sensor in remote controller"
21 DK_SkyAir | DK_VRV E0 "Protection devices actuated (unified)"
22 DK_SkyAir | DK_VRV | DK_RA E1 "Defect of OD unit PCB"
23 DK_VRV E2 "Earth Leakage detected by the ELB PCB"
24 DK_SkyAir | DK_VRV | DK_RA E3 "Actuation of high pressure switch (HPS)"
25 DK_SkyAir | DK_VRV E4 "Actuation of low pressure switch (LPS)"
26 DK_SkyAir | DK_VRV | DK_RA E5 "Overheat of inverter compressor motor"
27 DK_SkyAir | DK_VRV | DK_RA E6 "STD compressor motor overcurrent/lock"
28 DK_SkyAir | DK_VRV | DK_RA E7 "Malfunction of OD unit fan motor"
29 DK_RA E8 "Overcurrent of inverter compressor"
30 DK_SkyAir | DK_VRV E9 "Malfunction of electronic expansion valve coil"
31 DK_RA EA "Malfunction of four way valve"
32 DK_VRV EC "Malfunction of entering water temperature"
33 DK_VRV EF "Malfunction of thermal storage unit"
34 DK_RA H0 "Malfunction of sensor system of compressor"
35 DK_RA H1 "Malfunction of humidifier unit damper"
36 DK_SkyAir | DK_VRV | DK_RA H3 "Malfunction of high pressure switch (HPS)"
37 DK_SkyAir | DK_VRV H4 "Malfunction of low pressure switch (LPS)"
38 DK_RA H5 "Malfunction of compressor motor overload thermistor"
39 DK_RA H6 "Malfunction of position detection sensor"
40 DK_SkyAir | DK_VRV H7 "Malfunction of OD fan motor signal"
41 DK_RA H8 "Malfunction of compressor input (CT) system"
42 DK_SkyAir | DK_VRV | DK_RA H9 "Malfunction of OD air thermistor"
43 DK_SkyAir | DK_VRV HC "Malfunction of (hot) water temperature thermistor"
44 DK_VRV HJ "Malfunction of water system"
45 DK_SkyAir | DK_VRV | DK_RA F3 "Malfunction of discharge pipe temperature"
46 DK_SkyAir | DK_VRV | DK_RA F4 “Malfunction of low discharge super heat across the compressor”
47 DK_RA F6 "Abnormal high pressure in cooling"
48 DK_VRV F6 "Refrigerant overcharged"
49 DK_VRV F9 "Defect of EEV in BS box"
50 DK_SkyAir | DK_VRV J1 "Malfunction of pressure sensor"
51 DK_SkyAir | DK_VRV J2 "Malfunction of current sensor of compressor"
52 DK_SkyAir | DK_VRV | DK_RA J3 "Malfunction of discharge pipe thermistor"
53 DK_RA J4 "Malfunction of low pressure equivalent saturated temperature sensor system"
54 DK_SkyAir | DK_VRV | DK_RA J5 "Malfunction of suction pipe thermistor"
55 DK_SkyAir | DK_VRV | DK_RA J6 "Malfunction of heat exchanger thermistor"
56 DK_SkyAir | DK_VRV J7 "Malfunction of liquid pipe thermistor (Refrigerant circuit and others)"