If a machine fails to fill, which of the following issues might be directly responsible?

When a machine fails to fill, understanding the potential causes is essential for troubleshooting. Each of the options provided highlights a plausible issue that could directly impact the filling process.

A broken wire to a short probe can disrupt the electrical flow required for the machine to operate correctly. Probes often serve as sensors in filling machines, detecting levels of liquid. If there's a break in the wire, the machine may not receive the appropriate signals to fill.

A bad ground connection can lead to erratic operation of the machine. Grounding is vital for safety and proper functioning because it helps ensure that electrical surges have a safe pathway. If the ground connection is compromised, it may prevent the machine from recognizing other critical operational components, affecting the filling process.

An interruption in the water supply is a straightforward reason for a failure to fill. If machinery relies on a steady water supply to perform its function, any blockage or failure in the water line will directly stop the filling capability.

Since each of these problems can independently cause a machine to fail in filling, the correct response to the question encompasses all potential issues, affirming the importance of comprehensive troubleshooting to identify and rectify the specific cause of the failure.