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10-25-2018, 07:09 PM
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#1
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Senior Member
Join Date: Aug 2013
Location: BC, Cariboo, Lower Mainland.
Posts: 2,293
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Water pump failure
Our newish (May 2017)shurflo water pump doesn’t work. If I turn on any of the 3 switches the pump doesn’t work, fuse blows, and the water level / tank info display also goes dead as it’s on the same circuit. We may have left the pump on while hooked to city water.
Is there a pump controller on my unit? I’ve heard if you have multiple switches , yes. Where would it be?
Thanks.
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2022 25FKBS
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10-25-2018, 07:24 PM
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#2
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Senior Member
Join Date: Nov 2014
Posts: 245
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The controller is located near the pump. Blowing fuses maybe bad pump?
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10-26-2018, 04:37 AM
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#3
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Aug 2015
Posts: 3,180
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Other than the pump controller, mounted to the sidewall near the pump...which simply turns the ground to the pump on and off...there is a pressure switch mounted on/within the pump. It's what cycles the pump so that if water isn't being used, it cuts the pump off when the lines are pressurized. The pump shouldn't mind city water.
Does the pump turn at all before the fuse blows? You could have a frozen motor/shorted winding...or something in the pump...or simply a wire came off a spade and is grounded against something somewhere.
I would suspect a wire lug near the "newish" pump. Maybe a wire came off...
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Charlie & Ronni
2016 Ventana 4037
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10-26-2018, 07:39 AM
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#4
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Oct 2014
Location: Lake McClure, CA
Posts: 1,449
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I would start with disconnecting the hot wire to the pump(at the pump) and see if the fuse blows. If it does not blow the fuse , bad pump. If it does blow disconnect hot to the controller.
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2018 Dutch Star 4369 Spartan Chassis
2016 Jeep Cherokee, 1952 Willys CJ3A
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10-26-2018, 07:49 PM
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#5
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Moderator Emeritus
Nor'easters Club Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,785
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Diagram for control wiring found in QT's # 3. 
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10-28-2018, 03:01 PM
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#6
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Senior Member
Join Date: Aug 2013
Location: BC, Cariboo, Lower Mainland.
Posts: 2,293
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Quote:
Originally Posted by C.Martin
Other than the pump controller, mounted to the sidewall near the pump...which simply turns the ground to the pump on and off...there is a pressure switch mounted on/within the pump. It's what cycles the pump so that if water isn't being used, it cuts the pump off when the lines are pressurized. The pump shouldn't mind city water.
Does the pump turn at all before the fuse blows? You could have a frozen motor/shorted winding...or something in the pump...or simply a wire came off a spade and is grounded against something somewhere.
I would suspect a wire lug near the "newish" pump. Maybe a wire came off...
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Pump does not turn on at any point.
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2022 25FKBS
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10-28-2018, 06:19 PM
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#7
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Senior Member
Ford Super Duty Owner
Join Date: Mar 2016
Posts: 600
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I have a different coach and water pump, our controller was bad and blew fuses.
On the controller connect the ground wire to the pump wire(remove wires from controller and connect together - ground & load wires), replace fuse and turn on a faucet. If pump works it’s the controller. Mine cost $34. took maybe 5 minutes to change out.
Same controller 007 posted a photo of.
Steve
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2017 Newmar CS3710 2019 Jeep Wrangler JLU
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10-28-2018, 06:39 PM
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#8
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Senior Member
Join Date: Aug 2013
Location: BC, Cariboo, Lower Mainland.
Posts: 2,293
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Thanks all, I’m on city water right now, once it stops raining I’ll get out there and check the controller.
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2022 25FKBS
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11-01-2018, 02:41 PM
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#9
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Senior Member
Join Date: Aug 2013
Location: BC, Cariboo, Lower Mainland.
Posts: 2,293
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Pump was shorting out . Replaced pump. All good now.
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2022 25FKBS
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Linear Mode
