Trane TVR Pro CO Series - 2.20 xP3: Compressor current protection; 2.20.1 Digital display output; 2.20.2 Description; 2.20.3 Trigger; recover condition

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2.20 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-A1Y2 ≥ 41A or DC65PHDG-A1Y2 ≥ 49A.
 Recover condition: Current of compressor AA55PHDG-A1Y2 < 41A or DC65PHDG-A1Y2 < 49A.
 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
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