Error codes – κλιματιστικά ACSON
The code indication changes as shown below, and notifies with a long beep
00 Normal
A1 Indoor PCB error
A3 Drain pump abnormal
A5 Antifreeze (Cooling) / Heat exhanger overheat (Heating)
A6 Indoor fan motor abnormal
AH Electrical air cleaner abnormal
C4 Indoor heat exchanger (1) thermistor short/open
C5 Indoor heat exchanger (2) thermistor short/open
C7 Louver limit switch error
C9 Indoor room thermistor short/open
E1 Outdoor PCB error
E3 High pressure protection
E4 Low pressure protection
E5 Compressor motor lock / compressor overloaded
E6 Compressor start – up error
E7 Outdoor dc fan motor lock
E8 AC input over current
E9 EXV error
EA 4 way valve error
F3 Discharge pipe overheat
F6 Heat exchanger overheat
HO Compressor sensor system error
H3 High pressure switch error
H6 Compressor feedback detection error
H7 Fan motor overloaded / overcurrent / sensor abnormal
H8 AC current sensor error
E01 Require manual reset (possible causes)
E02 Compressor 1 high temperature (overload)
E03 Compressor 2 high temperature (overload)
E04 Compressor 3 high temperature (overload)
E05 Compressor 4 high temperature (overload)
E06 Compressor 1 high pressure trip / contact open
E07 Compressor 2 high pressure trip / contact open
E08 Compressor 3 high pressure trip / contact open
E09 Compressor 4 high pressure trip / contact open
E10 Compressor 1 trip/low refrigerant/outdoor abnormal
E11 Compressor 2 trip/low refrigerant/outdoor abnormal
E12 Compressor 3 trip/low refrigerant/outdoor abnormal
E13 Compressor 4 trip/low refrigerant/outdoor abnormal
E14 Room sensor short E32 Compressor 1 de-ice
E15 Room sensor open E33 Compressor 2 de-ice
E16 Indoor coil sensor 1 short E34 Compressor 3 de-ice
E17 Indoor coil sensor 2 short E35 Compressor 4 de-ice
E18 Indoor coil sensor 3 short
E19 Indoor coil sensor 4 short
E20 Indoor coil sensor 1 open
E21 Indoor coil sensor 2 open
E22 Indoor coil sensor 3 open
E23 Indoor coil sensor 4 open
E24 Outdoor coil sensor 1 short
E25 Outdoor coil sensor 2 short
E26 Outdoor coil sensor 3 short
E27 Outdoor coil sensor 4 short
E28 Outdoor coil sensor 1 open
E29 Outdoor coil sensor 2 open
E30 Outdoor coil sensor 3 open
E31 Outdoor coil sensor 4 open
E32 Compressor 1 de-ice
E33 Compressor 2 de-ice
E34 Compressor 3 de-ice
E35 Compressor 4 de-ice
Error Diagnosis by Wired Controller (MC301)
E0 System malfunction
E1 Sensor Broken (TH1 discharge Temp.)
E2 Sensor Broken (TH2 inlet coil 1)
E3 Sensor Broken (TH3 mid coil 1)
E4 Sensor Broken (TH4 inlet coil 2)
E5 Sensor Broken (TH5 mid coil 2)
E6 Sensor Broken (TH6 inlet coil 3)
E7 Sensor Broken (TH7 mid coil 3)
E8 Sensor Broken (TH8 ambient temp)
E9 Sensor Broken (TH9 outlet coil)
EA Sensor Broken (TH10 subcool outlet)
EB Sensor Broken (TH11 subcool suction)
EC Sensor Broken (TH12 suction)
EF Emergency Run
F0 Outdoor Storage Malfunction
F1 Sensor Broken (indoor inlet coil)
F2 Sensor Broken (indoor mid coil)
Error Diagnosis by Wired Controller (MC301)
F3 Sensor Broken (indoor outlet coil)
F4 Sensor Broken (indoor return air)
F5 Sensor Broken (indoor supply air)
F6 Indoor and controller communication malfunction
F7 Ambient temp exceed the limit
F8 4WV malfunction
F9 Refrigerant leakage
FA Controller storage malfunction
FB Water Pump (indoor water pump)
FC Indoor and outdoor communication malfunction
FE Master and slave communication malfunction
H0 Digital comp overload
H1 Fixed Comp1 overload
H2 Fixed Comp2 overload
H3 Fixed Comp3 overload
H4 High pressure too high
H5 Sensor broken, high pressure
H6 Discharge temp too high
L0 Super heat too low
L1 Low pressure too low
L2 Sensor broken, low pressure
1A Sensor broken (slave TH10 subcool outlet)
1B Sensor broken (slave TH11 subcool suction)
1C Sensor Broken (slave TH12 suction)
1F Emergency run (slave)
Error codes – κλιματιστικά ACSON
Test sensors , compressor , fans for Bosch – Nobu air conditioner
