Pc00 Inverter Module (Ipm) Protection - Carrier 38MBRC Series Service Manual

38MBRC: Service Manual
PC 00 (IPM Malfunction or IGBT Over-Strong Current Protection Diagnosis and Solution)
Description: When the voltage signal the IPM sends to the compressor drive chip is abnormal, the display LED displays "PC 00" and the air
conditioner turn off.
Recommended parts to prepare:
• Connection wires
• IPM module board
• Outdoor fan assembly
• Compressor
• Outdoor PCB
Troubleshooting and repair:
Check the wiring between
PCB and compressor .
Does an error exist ?
Is it in working order ?
Check the outdoor fan and the
outdoor unit ventilation .
Is it in working order ?
Check the compressor
acceptable parameters?
Replace the outdoor PCB .
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
NO
Check the IPM .
YES
YES
resistance values.
Are they within
YES
Ensure proper connections or
YES
replace the wires and connectors .
Replace the IPM board or
NO
replace the outdoor PCB .
Please refer to the solution of the
NO
Speed is Out of C ontrol malfunction.
NO Replace the compressor .
25
Fan