24 V supply low

What does ALARM 47 mean?

The detected 24 V DC voltage on terminal 12 of the control card has dropped below 18 V. This can impact the reliability of the control card and any external devices powered by this supply, potentially leading to incorrect operation or shutdowns.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Measure the 24 V DC supply at terminal 12 to confirm the voltage level and troubleshoot its source.