Can't help it... I love games...
There's an interesting side-effect in this design... at least in the Control Room...
Assuming that neither of the lights is burned out, this configuration presents some immediate diagnostic information just by watching how the lights behave. If we assume that the wiring is intact (this is a reasonable initial assumption) and that failures might occur in the devices only, then...
While the pump is off, the Red Light should be on... if not...
- Aux-2 is stuck open
If the Red Light is on, then, when pressing the Start Button in the Control Room, the Red Light should go off just after the Green Light comes on. If the Red Light stays on and the Green Light does not come on, then...
- there is a problem in one of the Stop Contacts or the Control Room Start Contact.
If both lights are on while holding the Start button, then...
- the mag might have tripped out (check the over-loads), or...
- the mag coil is burned out (verified if the over-loads are OK), or...
- the Aux-2 contact is fused closed (verified if the pump is running).
If, while holding the Start button, the Green Light is on and the Red Light is off (the mag-coil is working), and then, after releasing the Start button, the Green Light goes off and the Red Light goes on, then...
- Aux-1 has failed.
Only after performing the light-tests and then verifying that any suspected devices are not faulty should you consider that there might be a break in the wiring. Running down a broken wire is a pain in the a$$... and is also the least likely failure.