AC trigger switch location?

[Bakoboat]

Does anyone know location of AC trigger switch box
456 motor yacht year 2000
5 air conditioners on boat operating through 2 pumps

I found electrical box with ac wires running through it for my 2 units (bridge and aft deck), assuming these are trigger switches to activate the pump (both units on one pump)

My other 3 units use another pump. 2 of these work fine but 3rd unit (salon) turns on but doesnt activate pump , no water being discharged.

I know my pump, sea strainer etc. Are not clogged. Assuming there is a trigger switch or something failing to activate pump.

These are marine air units.

Appreciate any assistance

[Viper]

Can't remember if there are separate pump drivers in the control box for each AC unit or just one for all of them. Drivers and relays fail but try something simple first; swap the wall control panel from one you know is working and see if the problem follows the panel. After you remove the panel from the wall there should be a flat network type cable and connector at the back of the panel. Pretty easy to swap. Other than that it's a matter of finding the control box and taking some voltage readings.

[Bakoboat]

Good idea, I will try this.

I'm assuming their is one pump driver (trigger switch box) for these 3 units somewhere, because I found one for the other 2 AC's that operate off my 2nd pump.

I doubt carver would have installed different layouts in the same boat. Plus, I only have one electrical feed (single wire) to each pump.

Great idea,
Thank-you,

[Viper]

Ya one box for a group of units on the same pump but I'm talking about the pump drivers or relays in that box. Let us know if swapping the panel changes anything.