Midea MV6-252WV2GN1 - 2.21 xP3: Compressor current protection; 2.21.1 Digital display output; 2.21.2 Description; 2.21.3 Trigger; recover condition

V6 VRF 50/60Hz
120
Midea V6 Series Service Manual
2.21 xP3: Compressor current protection
Digital display output
'x' is a placeholder for the compressor system (compressor and related electrical components), with 1 representing
compressor system A and 2 representing compressor system B.
Description
 1P3 indicates current protection on compressor A; 2P3 indicates current protection on compressor B.
 All units stop running.
 Error code is only displayed on the unit with the error.
Trigger / recover condition
 Trigger condition: Current of compressor AA55PHDG –D1YG ≥ 24.6A or DC80PHDG –D1YG ≥ 33A.
 Recover condition: Current of compressor AA55PHDG –D1YG < 24.6A or DC80PHDG –D1YG < 33A.
 Reset method: Resume automatically.
Possible causes
 Outdoor unit stop valves are closed.
 Indoor load too large.
 Power supply abnormal.
 Sudden interruption of power to IDUs.
 Excess refrigerant.
 System contains air or nitrogen.
 Poor condenser heat exchange.
 High pressure side blockage.
 Inverter module damaged.
 Compressor damaged.
 Main PCB damaged.
Procedure
xP3
ODU stop valves are closed
Yes
Open the stop valves
No
The indoor load is too large
1
Yes
Make sure the combination ratio is less
than 130%
No
The power supply is abnormal
Yes
Check the power supply equipment
No
Sudden interruption of power to IDUs
Yes
Inspect the system and fix the error
No
Flowchart continued on next page …