I have a 2005 Hunter 45cc. Does anyone knows the location of the trigger switch (relay) for the air conditioners sea water pump
location of air conditioner sea water pump trigger
- Thread starter Slipin Away
- Start date
I imagine it's wired to the compressor relay as you'd want water flow any time the compressor is running
Ok,, here’s what Hunter did on the 49s, which I assume is the same on your boat.
The cooling water on the airco units runs in series through the airco units. So, if any airco is on, water flows through all units
The way this happens is there is a relay box that switches on when any of the airco units are energized. The water pump is powered from the contacts on these relays, which are essentially in parallel
Hope that helps !
If you have one AC unit, them typically the pump is triggered from the unit. If you have multiple units there will be the relay device, like artboas described, probably located someplace convenient (for the installer) between the two. It may look similar to a junction box.
Different model boat, but the P42 has a main power panel relay breaker that must be turned on to activate the sea water pump before the heat pumps will run. This panel has three breaker switches together on the AC side; forward heat pump, aft heat pump and relay. This relay pump supplies sea water to both heaters.