Inverter AC Outer card Explained | no fault code but AC not working problem solved
In this video, I have provided a detailed functional description of the Inverter AC outer unit card, focusing on the role of EMI filters and the Power Factor Corrector (PFC). I also discuss the IPM module for this card, which was brought in with a fault showing no error codes but was not operating correctly. Through troubleshooting, I discovered that the feedback resistance in the VDR circuit was malfunctioning. After replacing the VDR resistances, I reinstalled the card in the outer unit, resolving the issue successfully.
Functional description of the Inverter AC outer unit card
Role and importance of EMI filters
Action of the Power Factor Corrector (PFC)
Introduction to the IPM module
Troubleshooting steps for the non-working unit
Repairing the VDR circuit by replacing the faulty resistances
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