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Debugging:
Error Code
Preheat time of compressor is
U0
insufficient
Wrong setting of ODU's capacity
U2
code/jumper cap
Power supply phase sequence
U3
protection
U4
Refrigerant-lacking protection
Wrong address for driving board of
U5
compressor
U6
Alarm because valve is abnormal
U8
Malfunction of pipeline for IDU
U9
Malfunction of pipeline for ODU
UC
Setting of main IDU is succeeded
Emergency operation DIP switch
UL
code of compressor is wrong
UE
Charging of refrigerant is invalid
Identification malfunction of IDU of
UF
mode exchanger
Communication malfunction between
C0
IDU, ODU and IDU's wired controller
Communication malfunction between
C1
main control and DC-DC controller
Communication malfunction between
C2
main control and inverter compressor
driver
Communication malfunction between
C3
main control and inverter fan driver
C4
Malfunction of lack of IDU
Alarm because project code of IDU is
C5
inconsistent
Status:
Error Code
A0
Unit waiting for debugging
Refrigerant recovery operation of
A2
after-sales
A3
Defrosting
A4
Oil-return
A6
Heat pump function setting
A7
Quiet mode setting
A8
Vacuum pump mode
AH
Heating
AC
Cooling
AL
Charge refrigerant automatically
AE
Charge refrigerant manually
AF
Fan
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Content
56
Photovoltaic Multi VRF
Error Code
Alarm because ODU quantity is
C6
inconsistent
Abnormal communication of
C7
converter
C8
Emergency status of compressor
C9
Emergency status of fan
CA
Emergency status of module
CH
Rated capacity is too high
CC
No main unit
The matching ratio of rated capacity
CL
for IDU and ODU is too low
Communication malfunction
CE
between mode exchanger and IDU
Malfunction of multiple main control
CF
units
Address DIP switch code of system
CJ
is shocking
Malfunction of multiple wired
CP
controller
Communication malfunction
CU
between IDU and the receiving lamp
Cb
Overflow distribution of IP address
Communication malfunction
Cd
between mode exchanger and ODU
Malfunction of network for IDU and
Cn
ODU of mode exchanger
Communication malfunction of mode
Cy
exchanger
Error Code
Ay
Shielding status
n0
SE operation setting of system
n3
Compulsory defrosting
Limit setting for max. capacity/output
n4
capacity
Compulsory excursion of
n5
engineering code of IDU
n6
Inquiry of malfunction
n7
Inquiry of parameters
n8
Inquiry of project code of IDU
n9
Check quantity of IDU on line
nA
Heat pump unit
nH
Heating only unit
nC
Cooling only unit
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