Dead battery. Or bad switch


F

formulatr

Member
So 31 pc winterized last week went aboard today to lower drives, turned on house battery. No power. Battery test didn?t budge,0 on house, showed 12 for gen battery.shore power on at 115 and battery charger on and has been.
blowers didn?t work, hatch wouldn?t open, Mechanic shows turns on house battery , and both engine battery switches...everything gets powered up, blower works, hatch opens battery tester shows 13.8
did the house battery switch get a jolt from the other two coming on, ? Corrosion on switch..
throwing it out there..any thoughts
we did have heavy winds and torrential rains last night
 
Ok. A little more, turned on aux,house battery, blower works. Neither engine batteries were on
when I had issue with no 12 volt functioning,the green indicator lights on promariner galvanic isolator monitor were not even lit...even though shore power was on and showing 115 coming into the boat...
am I wrong in thinking something coming off the 12 volts system wasn’t working.
 
I think a PO change some things, or someone else did.
Don't know if you have an isolator or ACR (Auto Charge Relay) so the alternator will charge the bats

If there is an isolator, the engine start should have only a bat cable, charger cable, another cable used to combine house and engine, and maybe an isolator cable. The isolator is normally tied in at the bat charger post.

The house bat will have a bat cable going to the switch and to combiner (maybe its a relay), and one lead to feed the house

How many bats do you have? Figure at least 3 if not 4

The house bat should have
 
house and port engine tied together
Click to expand...

There is why blower comes on with hose bat switch ON, and could be a switch issue as you originally thought, or corrosion on cables/connections
 
Last edited:
You must log in or register to reply here.
Back
Top