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06-07-2018, 05:42 PM
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#1
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Junior Member
Join Date: Jun 2018
Posts: 1
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National Dolphin 5320
I have a light switch in my bathroom next to the mirror that is Almond color that has a red light below the switch it seems like the switch only works when the generator is on or you are plugged into 110 but when you turn the switch on the light comes on red what does it do does anybody know I appreciate the help
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06-07-2018, 05:47 PM
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#2
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Senior Member
Join Date: Jun 2015
Posts: 244
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Maybe the electric side of your water heater?
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06-07-2018, 07:12 PM
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#3
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 54,785
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Hi !  Welcome to IRV2! We're sure glad you joined the gang! 
I bet that's the water pump switch! Turn off the city water supply, turn on the switch, and see it you have water. That's assuming that you have water in the freshwater tank.
Good luck, happy trails, and God bless!  
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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06-07-2018, 08:08 PM
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#4
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Senior Member
Join Date: Mar 2017
Location: Zebulon, NC
Posts: 5,211
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__________________
Kelly and Jerry Powell with Halo (Lethal White Aussie), Nash the Rat Terrorist, and now Reid, the "Brindle we have no idea puppy"
2020 Grand Design Solitude 390RK-R
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06-07-2018, 08:21 PM
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#5
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Senior Member
Workhorse Chassis Owner
Join Date: Sep 2007
Location: st.charles mo.
Posts: 1,482
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It turns on the electric hot water heater.
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06-07-2018, 08:37 PM
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#6
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Senior Member
National RV Owners Club
Join Date: Mar 2012
Location: Lac Du Bonnet, Manitoba
Posts: 685
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If it's not the electric water heater, it could be one of the 3 water pump switches. Our Dolphin has one by the washroom room mirror, one on the main panel in the hallway(next to the water heater switches, gas and electric) and one in the basement pumping compartment( this one has no red light). If you are connected to an outside water source, turning the light on and off would appear not to do anything as the pump doesn't run if you are connected to a pressurized water source.
__________________
Ellen & Greg
08 National Dolphin DL-35Ci, RoadMaster Rear Sway Bar, Rear Trac Bar, Koni Shocks Front,
Workhorse W22, Kelderman Air Ride, Towing 2016 Smart Car
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06-08-2018, 12:30 AM
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#7
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 31,486
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Switch with led, controlling a 120 volt load , as mentioned possible water heater electric control .
A second somewhat less likely possibility is " tank heating pads " kind of like an electric blanket for your holding tanks.
If you don't have another switch in the coach for the electric hot water , that's more than likely that switch in question's function , but , if there is a second switch ( 120 volt with led) in the area of the water heater's gas control switch , then I'd say tank heating pads, part of a cold weather package.
With cold water in the water heater and the coach hooked to shore power , have someone turn on the switch and listen outside the water heater for a few mins. if it's the electric side of the water heater you'll hear the element start to sizzle in the cold water.
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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06-08-2018, 05:38 AM
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#8
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Senior Member
Join Date: Jun 2011
Posts: 367
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I am glad to see this question.
I have the very same switch in my National Tradewinds 275LE.
I 'thought' it was for the electric side of the water heater.
Thanks,
Wm Mayberry
2003 National Tradewinds 375LE
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06-08-2018, 07:12 AM
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#9
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Senior Member
Join Date: Jun 2015
Posts: 244
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Water pump should only be 12v
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06-08-2018, 08:33 AM
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#10
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Senior Member
Join Date: Apr 2015
Posts: 285
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That switch on my 2006 National Sea Breeze operates the water pump.
__________________
Steve & Cheryl Walsh
2006 National Sea Breeze 1350
Orange Park, FL
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06-09-2018, 09:43 AM
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#11
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Senior Member
National RV Owners Club
Join Date: Feb 2018
Location: Tumwater, Wa
Posts: 225
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Quote:
Originally Posted by StephenW
That switch on my 2006 National Sea Breeze operates the water pump.
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Same on my 1996 SeaBreeze 129
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06-10-2018, 07:14 PM
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#12
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Senior Member
Join Date: Mar 2017
Posts: 698
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On my 03 Dolphin 5320 there is three switches. The 2 12 volt are for the water pump and light. The switch with the red light is marked water heater. My coach is supposed to have heated tanks, but if they are they are heated by the furnace. My tanks are NOT exposed anyplace so I believe they are heated by the furnace.
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1996 Challenger 313
2003 Dolphin 5320 sold
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Linear Mode
