Water pump install weirdness April 04, 2023, 08:30:50 am Hello friends. Installing a new water pump this year (heading out in 2 weeks so I’m under the gun). I have two water pumps, both test fine with direct power. Test the connection under the sink with a multimeter and I’m getting good power. Test either pump to the connection and neither works. Why would that happen?
Re: Water pump install weirdness Reply #1 – April 04, 2023, 01:13:46 pm Hi Chris (Remicks); There is a water pump switch to turn the pump on and off. Usually near the vent hood over the stove top. The two wires; one should not be a ground wire. The other should be not hot or ground. It should be hot when the switch is turned on. So are you having problems with the pumps? why are you replacing it. Mine lasted 20 years and developed a leak, but it still pumped. RonB
Re: Water pump install weirdness Reply #2 – April 04, 2023, 01:46:35 pm A circuit may appear hot until a load is added, a poor connection in a switch, fuse or other connection may be the cause of the pump not running. Connect the pump and check the voltage at the pump with the power switch turned on to see if 12+ volts are still present.If not, start checking for bad connections.Pumps die, even the old dependable Whisper Kings, the pump that came in older LDs. Our 2003 LD has gone through several pumps. I have changed dozens of pumps over the year in various LDs and consider them to be expendable.Larry 1 Likes
Re: Water pump install weirdness Reply #3 – April 04, 2023, 05:57:11 pm Thanks for the feedback. I did test the connections with the switch on and it was reading 12+. Given that, I just dont 7nderstand why the pump(s) would kick on.
Re: Water pump install weirdness Reply #4 – April 04, 2023, 05:58:51 pm Larry, I just reread and digested your comment. I’ll check things with the pump attached. Thanks.
Re: Water pump install weirdness Reply #5 – April 04, 2023, 06:27:50 pm Is the pressure switch on the pump closed? Our MB has a pump switch in the bathroom near the shower.Jon
Re: Water pump install weirdness Reply #6 – April 04, 2023, 06:34:23 pm Quote from: Remicks - April 04, 2023, 05:58:51 pmLarry, I just reread and digested your comment. I’ll check thinks with the pump attached. Thanks.A typical DVM will have an input impedance of 10 million ohms or more. If the switch contacts are bad or there is a poor connection somewhere that adds say 100 ohms to the resistance, the pumps will not work - but disconnected, the circuit will read full voltage minus 0.001%.Steve 1 Likes
Re: Water pump install weirdness Reply #7 – April 08, 2023, 05:28:27 pm Fixed. Bad ground. Thanks for all the help friends. Now if there were only enough room to fit the pump. Sheesh it’s tight.
Re: Water pump install weirdness Reply #8 – April 08, 2023, 05:38:00 pm Remove the converter and set it on the floor. Don't disconnect anything the wires are long enough. It'll make a big difference.Jon 2 Likes
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Topic: Water pump install weirdness (Read 236 times)
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