47

24V supply low

Danfoss · VLT HVAC Drive High Power

What does 47 mean?

The 24V DC supply generated by the switch-mode power supply (SMPS) on the power card is operating below its acceptable voltage range. This low voltage can cause erratic behavior or non-operation of components that rely on the 24V supply, potentially leading to incorrect sensor readings or control issues.

Complete Troubleshooting Guide

  1. 1

    Check for a defective power card that might not be regulating the 24V supply correctly.

  2. 2

    Verify the load on the 24V supply to ensure it is not overloaded.

  3. 3

    Inspect wiring for loose connections or high resistance.