F5
zF6
F9
FA
Fb
Fc
Fd
H0
H2
H3
H4
H5
H6
H7
H8
xH9
Hb
yHd
C7
P1
P2
P31
P32
P4
xP9
PL
PP
A0
A1w
CA2
CA3
CA4
T6A temperature sensor error
Electronic expansion valve connection error
T5 temperature sensor error
T8 temperature sensor error
T9 temperature sensor error
TL temperature sensor error
T7 temperature sensor error
Communication error between main board and compressor drive board
Qty. of outdoor unit decreases error
Qty. of outdoor unit increases error
Compressor inverter module protection
Low pressure protection lock out (P2 3X in 60 minutes)
Compressor discharge temperature protection ( P4 3X in 100 minutes)
Qty. of indoor units mismatching
High pressure sensor error
DC fan module protection ( P9 10X in 120 minutes)
Low pressure sensor error
Slave unit malfunction(y=1,2 ,1Hd stands for slave unit 1 error)
Compressor inverter module temperature protection ( PL 3X in 100 minutes)
High pressure protection
Low pressure protection
Primary current protection
Secondary current protection
Discharge temperature protection or discharge temperature switch protection
DC fan module protection
Compressor inverter module temperature protection
Compressor discharge insufficient superheat protection
Emergency stop
Refrigerant leakage protection
The system is connected to VRF DX AHU control box only
The system is connected only to the HT hydro module
The system is only connected to VRF DX AHU control box + HT hydro module
VRF indoor is beyond the connection range
VRF DX AHU control box
is beyond the connection range
The HT hydro module is beyond the connection range
The Qty. of IDUs connected to the system is beyond the connection range
Inverter compressor module error
DC bus low voltage protection
DC bus high voltage protection
Reserved
MCE error
Zero speed protection
Motor parameter error
Phase sequence error
Compressor frequency hopping error
PED software verification failed
Error or protection definition
Remarks
Displayed
Content
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Only displayed on the the master unit
Only displayed on the the master unit
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Only displayed on the the master unit
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Only displayed on the the master unit
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
Displayed on the unit with the error
U0
CA5
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
The system is simultaneously connected to VRF VRF DX AHU
control box + HT hydro module
Cb1
Cb2
Cb3
Cb4
L0
L1
L2
L3
L4
L5
L6
L7
L8
LA
Displayed on the unit with the error
Displayed on the unit with the error
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.
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