Join Date: Feb 2007
Location: Spain + Germany
My Motorhome: Four Winds RV
Thanked 480 Times in 452 Posts
Yep, or maybe the pump isn't working as it should. Can you disconnect the water pipe coming out of the pump and turn it on to see if there's a flow coming out. I suspect there may not be. I assume your battery has enough charge to run the pump, very low voltage could cause it not to run properly. Do you have a miltimeter so you can check that 12v is being delivered at the pump?
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