06
Displayed
Content
Error or protection denition Remarks
F5 T6A temperature sensor error Displayed on the unit with the error
zF6 Electronic expansion valve connection error Displayed on the unit with the error
F9 T5 temperature sensor error Displayed on the unit with the error
FA T8 temperature sensor error Displayed on the unit with the error
Fb T9 temperature sensor error Displayed on the unit with the error
Fc TL temperature sensor error Displayed on the unit with the error
Fd T7 temperature sensor error Displayed on the unit with the error
H0 Communication error between main board and compressor drive board Displayed on the unit with the error
H2 Qty. of outdoor unit decreases error Only displayed on the the master unit
H3 Qty. of outdoor unit increases error Only displayed on the the master unit
H4 Compressor inverter module protection Displayed on the unit with the error
H5 Low pressure protection lock out (P2 3X in 60 minutes) Displayed on the unit with the error
H6 Compressor discharge temperature protection ( P4 3X in 100 minutes) Displayed on the unit with the error
H7 Qty. of indoor units mismatching Only displayed on the the master unit
H8 High pressure sensor error Displayed on the unit with the error
xH9 DC fan module protection ( P9 10X in 120 minutes) Displayed on the unit with the error
Hb Low pressure sensor error Displayed on the unit with the error
yHd Slave unit malfunction(y=1,2 ,1Hd stands for slave unit 1 error) Only displayed on the the master unit
C7 Compressor inverter module temperature protection ( PL 3X in 100 minutes) Displayed on the unit with the error
P1 High pressure protection Displayed on the unit with the error
P2 Low pressure protection Displayed on the unit with the error
P31 Primary current protection Displayed on the unit with the error
P32 Secondary current protection Displayed on the unit with the error
P4 Discharge temperature protection or discharge temperature switch protection Displayed on the unit with the error
U0
In the event of S10=ON, a forced test operation is set. However, a test operation is
not performed for 30 minutes after power-on
Displayed on the unit with the error
xP9 DC fan module protection Displayed on the unit with the error
PL Compressor inverter module temperature protection Displayed on the unit with the error
PP Compressor discharge insufcient superheat protection Displayed on the unit with the error
A0 Emergency stop Displayed on the unit with the error
A1w Refrigerant leakage protection Displayed on the unit with the error
CA2 The system is connected to VRF DX AHU control box only Displayed on the unit with the error
CA3 The system is connected only to the HT hydro module Displayed on the unit with the error
CA4 The system is only connected to VRF DX AHU control box + HT hydro module Displayed on the unit with the error
CA5
The system is simultaneously connected to VRF indoor + VRF DX AHU control box +
HT hydro module
Displayed on the unit with the error
Cb1 VRF indoor is beyond the connection range Displayed on the unit with the error
Cb2 VRF DX AHU control box is beyond the connection range Displayed on the unit with the error
Cb3 The HT hydro module is beyond the connection range Displayed on the unit with the error
Cb4 The Qty. of IDUs connected to the system is beyond the connection range Displayed on the unit with the error
L0 Inverter compressor module error
L1 DC bus low voltage protection
L2 DC bus high voltage protection
L3 Reserved
L4 MCE error
L5 Zero speed protection
L6 Motor parameter error
L7 Phase sequence error
L8 Compressor frequency hopping error
LA PED software verication failed
Note:
'x' is a placeholder for the fan address, with 1 representing fan A and 2 representing fan B.
'y' is a placeholder for the address (1 or 2) of the slave unit with the error.
'z' is a number for the electronic expansion valve, with1 representing electronic expansion valve A and 3 representing
electronic expansion valve C.
'w' is a placeholder for the protection mode of refrigerant leakage, with 1 representing the system should force to shutdown
after the protection, 2 representing the system should force to shutdown after the protection in 12 hours and 3 representing
the system should force to shutdown after the protection in 24 hours.