
Operation methods
36
Error code list (3/3)
Error code
Details
P1
Outdoor unit · Power voltage imbalance or inverter PCB
P4
Outdoor unit · Malfunction of radiation fin temperature sensor
U0
System · Shortage of refrigerant
U1
System · Reverse phase, open phase
U2
System · Malfunction of power supply or instantaneous power failure
U4
System · Malfunction of transmission between indoor and outdoor unit
U5
System · Malfunction of transmission between indoor unit and remote controller
U6
System · Malfunction of transmission between indoor units
U7
System · Malfunction of transmission between outdoor units
U8
System · Malfunction of transmission between remote controllers
U9
System · Malfunction of transmission (other system)
UA
System · Improper combination of indoor and outdoor units
UC
System · Malfunction of setting of centralized control equipment address
UE
System · Malfunction of transmission between indoor unit and centralized control
equipment
UF
System · System is not set yet
UH
System · Malfunction of system