Midea MV6-R252WV2RN1 - 2.28 A1 w: Refrigerant leakage protection; 2.28.1 Digital display output; 2.28.2 Description; 2.28.3 Trigger; recover condition

V6R VRF 50Hz
142
Midea
V6R
Series Service Manual
2.28 A1w: Refrigerant leakage protection
Digital display output
Description
 Refrigerant leakage protection.
 All units stop running.
 Error code is displayed on the unit with the error.
Trigger / recover condition
 Trigger condition:
If any MS reports refrigerant leak failure A1, the failure is sent to the ODU.
Menu Settings
Error Code
Description
nE=1
A11
The unit is stopped forcedly after the ODU reports A11.
nE=2
A12
The unit is stopped forcedly 12 hours after the ODU reports A12.
nE=3
A13
The unit is stopped forcedly 24 hours after the ODU reports A13.
 Recover condition:
The outdoor unit does not receive the refrigerant leakage fault signal sent by the MS.
 Reset method: Resume automatically.
Possible causes
 Refrigerant pipe or indoor unit leak.
 The refrigerant leak sensor is not connected or has malfunction.
 MS main control board is damaged.
Procedure
A11/A12/A13
Refrigerant pipe or indoor unit leak.
Yes
Find leaks and repair welding
No
The refrigerant leak sensor is not
connected or has malfunction.
Yes
Check the setting of dial S1 on the MS
and whether the refrigerant sensor is
connected properly and is not damaged
No
Replace the MS main PCB