DC Inverter UNI SPLIT Series
Duct
Type Unit
56
Error
code
Error
Error
code
Error
F3
Outdoor ambient temperature
sensor error
qd
DC indoor fan driver module high
temperature protection
Fo Recycling refrigerant mode qE
DC indoor fan driver module
temperature sensor error
H1 Ordinary defrosting state qF
DC indoor fan driver memory chip
error
H4 Overload protection qH
DC indoor fan driver charge loop
error
H5 IPM module current protection qL
DC indoor fan driver input AC
voltage error protection
H7
Compressor out-of-step
protection
qo
DC indoor fan driver electrical box
temperature sensor error
HC PFC overcurrent protection qp
DC indoor fan driver AC input
zero-crossing protection
HE
Compressor demagnetize
protection
U1
Compressor phase current circuit
detection error
L3 Outdoor fan 1 error U2
Compressor phase-loss and
anti-phase protection
L4
Wired controller power supply
circuit poor
U3 DC bus voltage drop error
L5
Wired controller power supply
overcurrent protection
U5 Overall current detection failure
L6
One control multi-machine
endor quantity is inconsistent
U7 4–way valve switch-over error
L7
One control multi-machine
endor series is inconsistent
U8 Zero-crossing protection
LA Outdoor fan 2 error UL Outdoor fan overcurrent protection
Lc Compressor startup failure Uo
Outdoor ambient temperature
abnormal(Temperature high
opening heat mode or temperature
over low open refrigeration mode)
NOTE:
When the unit is connected with the wired controller, the error code
will be simultaneously shown on it.
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