9 ERROR CODES
Table 9-1: Error code table
E2
E4
E5
E7
E8
E9
F1
F3
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
Communication error between MS and master unit
!!+#
Abnormal power supply voltage
Discharge temperature sensor error (T7C1)
Outdoor unit address error
EEPROM mismatch of compressor
DC bus voltage error
T6B temperature sensor error
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
Error or protection definition
Remarks
Displayed
content
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
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
E0
U0
CA5
Communication error between outdoor units
Only displayed on the slave unit with
the error
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
Displayed on the unit with the error
Displayed on the unit with the error
37