Case Study - Inverter Pba Error - Samsung AM080FX A Series Service Manual

Troubleshooting
4-4 Case study for trouble shoots (cont.)
4-4-11 Case study – Inverter PBA error
Outdoor unit display
Judgment Method
Cause of problem
Outdoor unit display
Judgment Method
Cause of problem
Samsung Electronics
(INVERTER1 PBA)
(INVERTER2 PBA)
∙ Will occur if the overcurrent flowing in the IPM.
∙ Detected by H/W or S/W
∙ Installation defective
∙ Comp. defective
∙ PBA defective
(INVERTER1 PBA)
(INVERTER2 PBA)
∙ N-phase wiring error and EMI Fuse short.
∙ DC-Link Overvoltage / Low voltage occurs.
∙ Check the input wiring
∙ EMI Fuse short
∙ Connection wire error
∙ Motor defective
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