260
Trouble Shooting Guide
Open or short of Sub1 Outdoor Unit constant speed com-
pressor2 discharge temperature sensor
Open or short of heat exchanger sensor of Sub1 Outdoor
Unit (front side)
Open or short of heat exchanger sensor of Sub1 Outdoor
Unit (rear side)
Open or short of Sub1 Outdoor Unit liquid pipe temperature
sensor
Open or short of Sub1 Outdoor Unit excessive cooling inlet
temperature sensor
Open or short of Sub1 Outdoor Unit excessive cooling outlet
temperature sensor
Open or short of Sub2 Outdoor Unit High Pressure sensor
(3Units)
Open or short of Sub2 Outdoor Unit Low Pressure sensor
(3Units)
Open or short of Sub2 Outdoor Unit air temperature sensor
(3Units)
Open or short of Sub2 Outdoor Unit suction temperature sen-
sor (3Units)
Open or short of Sub2 Outdoor Unit constant speed com-
pressor1 discharge temperature sensor (3Units)
Open or short of Sub2 Outdoor Unit constant speed com-
pressor2 discharge temperature sensor (3Units)
Open or short of Sub2 Outdoor Unit heat exchanger temper-
ature sensor(front side) (3Units)
Open or short of Sub2 Outdoor Unit heat exchanger temper-
ature sensor(rear side) (3Units)
Open or short of Sub2 Outdoor Unit liquid pipe temperature
sensor (3units)
Open or short of Sub2 Outdoor Unit excessive cooling inlet
temperature sensor (3units)
Open or short of Sub2 Outdoor Unit excessive cooling outlet
temperature sensor (3units)
Open or short of Sub2 Outdoor Unit High Pressure sensor
(3units)
Misconnection or disconnection of R, S, T Power line of Sub2
Outdoor Unit
If failing to receive signal of the central control part from the
main control part
Compressor Off by excessive increase of Sub1 Outdoor Unit
High Pressure
Sub1 Outdoor Unit constant speed
compressor2 discharge temperature
sensor
Sub1 Outdoor Unit heat exchanger
sensor (front side)
Sub1 Outdoor Unit heat exchanger
sensor (rear side)
Sub1 Outdoor Unit liquid pipe temper-
ature sensor
Sub1 Outdoor Unit excessive cooling
inlet temperature sensor
Sub1 Outdoor Unit excessive cooling
outlet temperature sensor
Sub2 Outdoor Unit High Pressure
sensor (3Units)
Sub2 Outdoor Unit Low Pressure
sensor (3Units)
Sub2 Outdoor Unit air temperature
sensor (3Units)
Sub2 Outdoor Unit suction
temperature sensor (3Units)
Sub2 Outdoor Unit constant speed
compressor1 discharge temperature
sensor (3Units)
Sub2 Outdoor Unit constant speed
compressor2 discharge temperature
sensor (3Units)
Sub2 Outdoor Unit heat exchanger
temperature sensor (front side)
(3Units)
Sub2 Outdoor Unit heat exchanger
temperature sensor (rear side)
(3Units)
Sub2 Outdoor Unit liquid pipe
temperature sensor (3Units)
Sub2 Outdoor Unit excessive cooling
inlet temperature sensor (3Units)
Sub2 Outdoor Unit excessive cooling
outlet temperature sensor (3Units)
Sub2 Outdoor Unit High Pressure
sensor (3Units)
Reverse connection of the R, S, T
Power line of Sub2 Outdoor Unit
Transmission related error between
Outdoor Units (Main Outdoor Unit
➡
Sub2 Outdoor Unit) (3Units)
High Pressure of Sub1 Outdoor Unit
Display
Title
Cause of Error
1
2
2
1
2
3
1
2
4
1
2
5
1
2
6
1
2
7
1
2
8
1
2
9
1
3
0
1
3
2
1
3
3
1
3
4
1
3
5
1
3
6
1
3
7
1
3
8
1
3
9
1
4
0
1
4
1
1
4
2
1
4
3
Outdoor Unit related error
Self-diagnosis function
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 ...