DC Inverter U-match Series Floor Ceiling Type Unit
51
Error
code
Error
Error
code
Error
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.
Instructions to the Error Indicating Lamps on the Panel of the Floor Ceiling
Type Unit.