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05-28-2019, 05:43 PM
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#1
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Junior Member
Join Date: Sep 2017
Posts: 4
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City water fills fresh water tank
Question here. I am hooked to city water which works fine but somehow It keeps filling my fresh water tank even though the switch is on city water only. Any help please
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05-28-2019, 06:07 PM
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#2
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Senior Member
Join Date: Jan 2017
Location: Kalamazoo
Posts: 2,139
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they need to change the name of this forum to "fresh tank fills when on city water" the most common thread other then tow weights. Your check valve in your water pump is stuck open. turn off your city water. run the water pump and it should fix itself.
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05-28-2019, 06:14 PM
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#3
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Site Team
Join Date: Oct 2014
Posts: 15,297
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Very common. You may need to reset the back flow valve.
Turn off city water
Run water until it stops
Turn on water pump
Open any faucet for a minute
shut off faucet
Once pump stops turn off pump
turn on city water
Do not run water pump when using city water.
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05-28-2019, 06:19 PM
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#4
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Senior Member
Join Date: Jul 2017
Location: North of Seattle, WA
Posts: 17,353
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Use the search function and you'll find a new thread every week that describes this problem.
Resetting the check valve in the water pump usually works until you run the pump while city water is connected.
Adding an inline check valve on the input to your water pump is a permanent fix.
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"You only grow old when you run out of new things to do"
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05-28-2019, 06:21 PM
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#5
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Site Team
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 21,582
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Do you happen to have the Anderson Kantleak set-up as mentioned in the following thread? It MAY require a different solution.
http://www.forestriverforums.com/for...wn-184872.html
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05-28-2019, 07:23 PM
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#6
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Junior Member
Join Date: Sep 2017
Posts: 4
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Thank you all for the responses. Disconnected city water. Then ran water pump as suggested. Now waiting to see if problem was resolved. Thanks again for all responses
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05-28-2019, 07:31 PM
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#7
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Senior Member
Join Date: Jul 2017
Location: North of Seattle, WA
Posts: 17,353
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Quote:
Originally Posted by Rock1111
Thank you all for the responses. Disconnected city water. Then ran water pump as suggested. Now waiting to see if problem was resolved. Thanks again for all responses
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Enjoy your evening. You'll know by morning. 
__________________
"A wise man can change his mind. A fool never will." (Japanese Proverb)
"You only grow old when you run out of new things to do"
2018 Flagstaff Micro Lite 25BDS
2023 f-150 SCREW XLT 3.5 Ecoboost (The result of a $68,000 oil change )
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05-29-2019, 01:19 PM
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#8
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Senior Member
Join Date: Feb 2017
Location: Northern CA
Posts: 528
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Fresh water tank fills on city water
Will this complaint never stop? Are water pumps getting worse? 99% chance your pump is allowing pressurized city water to backfill the tank. This is probably the biggest complaint of new people to the forum. Easiest solution...get a new pump. They are easy to install.
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05-29-2019, 01:47 PM
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#9
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,146
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Also, too high city water pressure can overcome a perfectly good check valve in the pump.
Make sure you are using a quality water pressure regulator.
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05-29-2019, 04:13 PM
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#10
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Senior Member
Join Date: Jul 2017
Location: North of Seattle, WA
Posts: 17,353
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Quote:
Originally Posted by JimMorrell
Will this complaint never stop? Are water pumps getting worse? 99% chance your pump is allowing pressurized city water to backfill the tank. This is probably the biggest complaint of new people to the forum. Easiest solution...get a new pump. They are easy to install.
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Cheaper to install check valve on pump inlet. A fraction of the cost and a new pump is no guarantee the problem won't resurface.
__________________
"A wise man can change his mind. A fool never will." (Japanese Proverb)
"You only grow old when you run out of new things to do"
2018 Flagstaff Micro Lite 25BDS
2023 f-150 SCREW XLT 3.5 Ecoboost (The result of a $68,000 oil change )
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05-30-2019, 06:23 PM
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#11
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,146
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Quote:
Originally Posted by TitanMike
Cheaper to install check valve on pump inlet. A fraction of the cost and a new pump is no guarantee the problem won't resurface.
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X2
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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