Probably added by a PO.
Can you determine the brand? Maybe a model #.
That would allow you to contact the mfg, or maybe someone has a similar model owners manual to share.
But, if you found the so,Union (the override switch), I would be inclined to use that when needed and leave well enough alone. Good that you found the override before you really needed the engine after a discharge.
My old boat has a haylon cylinder, and a heat activated discharge valve of some sort. But no electrical connections that interlock with the engine. The discharge valve does have 2 wire connections, but they are not connected to anything.
I don’t know what would happen if you just disconnected any wires to the suppression device.
Glad you figured out why it wouldn’t start.
Greg
Can you determine the brand? Maybe a model #.
That would allow you to contact the mfg, or maybe someone has a similar model owners manual to share.
But, if you found the so,Union (the override switch), I would be inclined to use that when needed and leave well enough alone. Good that you found the override before you really needed the engine after a discharge.
My old boat has a haylon cylinder, and a heat activated discharge valve of some sort. But no electrical connections that interlock with the engine. The discharge valve does have 2 wire connections, but they are not connected to anything.
I don’t know what would happen if you just disconnected any wires to the suppression device.
Glad you figured out why it wouldn’t start.
Greg