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Troubleshooting Common Inverter AC Fault Messages and Errors

This guide discusses the troubleshooting of common fault messages found in Inverter AC units, specifically those related to the WAC control PCB and its connection to the room sensor. Key issues addressed include the C5 error in VPS, potential damage from short circuits, wrong wiring, and loose connections. It also highlights the F6 and H6 errors related to SAC motor feedback connectors and their causes, such as cut wires, motor jams, and faulty connectors. Follow these insights to diagnose and resolve these electrical issues effectively.

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Troubleshooting Common Inverter AC Fault Messages and Errors

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Presentation Transcript

  1. FAULT MESSAGES:-

  2. FAULT MESSAGES

  3. FAULT MESSAGES – Inverter AC

  4. Connector 04 ( C5 Error In VPS )

  5. WAC Control PCB SMD in series with Room sensor signal.

  6. WAC Power PCB Relays Can Damage Due To:- 1 Short Circuit in wiring 2 Wrong Wiring 3 Loose connections at Terminals ( Sparking ) VDR 10K561 ( Over-Voltage protector )

  7. F6 Or H6 Error in SAC Motor Feedback connector ( 3 Pin) Includes Vcc, Feedback & Gnd. ( Check 5V between Vcc & Gnd ) • Can Be Due to:- • Motor Wires Cut • Feedback wires cut • Motor Jam ( Feedback signal not received) • Track Burn on PCB ( Feedback not reach to MICON • Faulty Connector of Feedback.

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