V6R VRF 50Hz
85
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Table 6-1.1: Error code table (continued)
Error code
1
Content
Remarks
Manual re-start
required
2
A0
Emergency shutdown
No
A1w
Refrigerant leakage protection
Yes
CA1
There are other indoor unit connected except the 2
nd
generation DC IDU
Only displayed on the master unit
with
the error
Yes
CA2
The system is connected to AHU kit only.
Only displayed on the master unit
with
the error
Yes
CA3
The system is connected only to the high temperature
hydro module (HT hydro module)
Only displayed on the master unit
with
the error
Yes
CA4
The system is simultaneously connected to AHU kit + HT
hydro module
Only displayed on the master unit
with
the error
Yes
CA5
The system is simultaneously connected to VRF
AHU kit + HT hydro module.
Only displayed on the master unit
with
the error
Yes
Cb1
VRF Indoor is beyond the permitted connection range
Only displayed on the master unit
with
the error
Yes
Cb2
AHU KIT is beyond the permitted connection range
Only displayed on the master unit
with
the error
Yes
Cb3
The HT hydro module is beyond the permitted
connection range
Only displayed on the master unit
with
the error
Yes
Cb4
The number of IDUs connected to the system is beyond
the permitted connection range
Only displayed on the master unit
with
the error
Yes
L0
Inverter compressor module error
Displayed on the unit with the error
No
L1
DC bus low voltage protection
Displayed on the unit with the error
No
L2
DC bus high voltage protection
Displayed on the unit with the error
No
L3
Reserved
Displayed on the unit with the error
No
L4
MCE error
Displayed on the unit with the error
No
L5
Zero speed protection
Displayed on the unit with the error
No
L6
Motor parameter error
Displayed on the unit with the error
No
L7
Phase sequence error
Displayed on the unit with the error
No
L8
Compressor frequency hopping error
Displayed on the unit with the error
No
LA
PED software verification failed
Displayed on the unit with the error
No
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.
Only displayed on the master unit
with
the error
No
U21/U22/U23 Ambient temperature is not suitable for test operation
Only displayed on the master unit
with
the error
No
U31/U32/U33 Stop valve is not open
Only displayed on the master unit
with
the error
No
U4
Indoor unit refrigerant pipe and signal cable connection
are inconsistent.
Only displayed on the master unit
with
the error
No
Notes:
1.
'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 (1or2) of the slave unit with
the error. 'z' is a number for the electronic expansion valve, with1 representing electronic expansion valve A and 2 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.
2.
For some error codes, a manual restart is required before the system can resume operation.
3.
Once the EEV has been connected properly, the error code will flash to indicate that the connection has been re-established. A manual restart is then
required before the system can resume operation.
