Service Manual 259
Self-diagnosis function
Compressor Off by excessive increase of discharge tempera-
ture of constant speed compressor1 of the Sub1 Outdoor
Unit
Compressor Off by excessive increase of discharge tempera-
ture of constant speed compressor1 of the Sub2 Outdoor
Unit
Compressor Off by excessive increase of discharge tempera-
ture of constant speed compressor1 of the Sub2 Outdoor
Unit (3 units)
Compressor Off by excessive increase of discharge tempera-
ture of constant speed compressor2 of the Sub2 Outdoor
Unit (3 units)
If failing to receive signal of the Sub1 Outdoor Unit from the
Main Outdoor Unit control part
If failing to receive signal of the fan driving control part from
the Main Outdoor Unit control part
Occurrence of over-current at Main Outdoor Unit fan motor
(IPM Fault)
Occurrence of Low Voltage of Main Outdoor Unit fan motor
If failing to receive signal of the Main Outdoor Unit control
part from the fan driving control part
Operation of High Pressure switch due to increase of Sub1
Outdoor Unit High Pressure increase
Misconnection or disconnection of R, S, T Power line of Sub1
Outdoor Unit
If failing to receive signal of the Main Outdoor Unit control
part from the Sub1 Outdoor Unit control part
Open or short of Main Outdoor Unit liquid pipe temperature
sensor
Open or short of Main Outdoor Unit excessive cooling inlet
temperature sensor
Open or short of Main Outdoor Unit excessive cooling outlet
temperature sensor
Open or short of Sub1 Outdoor Unit High Pressure sensor
Open or short of Sub1 Outdoor Unit Low Pressure sensor
Open or short of Sub1 Outdoor Unit air temperature sensor
Open or short of Sub1 Outdoor Unit suction temperature
sensor
Open or short of Sub1 Outdoor Unit constant speed com-
pressor1 discharge temperature sensor
Discharge temperature of Main
Outdoor constant speed compressor
1 of Sub1 Outdoor Unit
Discharge temperature of Main
Outdoor constant speed compressor
2 of Sub1 Outdoor Unit
Discharge temperature of Main
Outdoor constant speed compressor
1 of Sub2 Outdoor Unit (3 units)
Discharge temperature of Main
Outdoor constant speed compressor
2 of Sub2 Outdoor Unit (3 units)
Transmission related error between
Outdoor Units (Sub1 Outdoor Unit
➡
Main Outdoor Unit)
Transmission related error Main
Outdoor Unit fan driving (fan
➡
Outdoor Unit)
Occurrence of over-current at Main
Outdoor Unit fan motor (IPM Fault)
Low Voltage of Main Outdoor Unit fan
motor
Transmission related error of Main
Outdoor Unit fan motor
(Outdoor Unit
➡
fan)
High Pressure switch of Sub1 Outdoor
Unit
Reverse connection of the R, S, T
Power line of Sub1 Outdoor Unit
Transmission related error between
Outdoor Units (Main Outdoor Unit
➡
Sub1 Outdoor Unit)
Main Outdoor Unit liquid pipe
temperature sensor
Main Outdoor Unit excessive cooling
inlet temperature sensor
Main Outdoor Unit excessive cooling
outlet temperature sensor
Sub1 Outdoor Unit High Pressure
sensor
Sub1 Outdoor Unit Low Pressure
sensor
Sub1 Outdoor Unit air temperature
sensor
Sub1 Outdoor Unit suction
temperature sensor
Sub1 Outdoor Unit constant speed
compressor1 discharge temperature
sensor
Display
Title
Cause of Error
1
0
0
1
0
1
1
0
2
1
0
3
1
0
4
1
0
5
1
0
6
1
0
7
1
0
8
1
0
9
1
1
0
1
1
1
1
1
3
1
1
4
1
1
5
1
1
6
1
1
7
1
1
8
1
2
0
1
2
1
Compressor related errorCompressor related error
Transmission related error
Outdoor Unit related error
Summary of Contents for multi V PLUS
Page 21: ...Service Manual 21 Indoor Unit Indoor Units ...
Page 74: ...74 Indoor Unit ...
Page 86: ...86 Indoor Unit ...
Page 142: ...142 Indoor Unit ...
Page 160: ...160 Indoor Unit ...
Page 179: ...Service Manual 179 Outdoor unit ...
Page 239: ...Service Manual 239 Wiring Diagrams 5 8 60Hz 220V Main Outdoor Unit 8HP 10HP 12HP ...
Page 245: ...Service Manual 245 Trouble shooting guide ...
Page 296: ...296 Trouble Shooting Guide ...
Page 297: ...Service Manual 297 Appendix ...
Page 303: ...Service Manual 303 Exploded View Replacement Parts List ...