10 Volts low

What does 1 mean?

The control card voltage from terminal 50 has dropped below 10 V. This is typically caused by an overloaded 10 V supply (exceeding 15 mA or below 590 Ω minimum resistance) or a short circuit in a connected potentiometer or its wiring. If left unresolved, this can lead to unstable control card operation or system shutdown.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If the warning persists even after external wiring is removed, the control card itself is likely defective and requires replacement.