What is the first step in troubleshooting a control circuit?

The first step in troubleshooting a control circuit is to check for control power because it is essential to establish whether the circuit is receiving the necessary voltage to operate. If there is no control power, the system won’t function, making it impossible to proceed with any further troubleshooting or testing. This initial check saves time by confirming that the circuit is energized and helps determine if the issue lies within the power supply or the components of the control circuit itself. Establishing control power creates a baseline condition for understanding how the circuit should perform and directs subsequent troubleshooting steps efficiently.