Forum Discussion

Flatfive's avatar
Flatfive
Explorer III
Dec 19, 2015

What is this switch for?

We have a 2002 Fleetwood Prowler Lynx, Northwest Edition, 20' long.
We have yet to spend a night in it but we're getting ready for a trip. We're learning lots about the trailer. Had to replace the converter yesterday. But we still don't know what this big switch is for.

Well, I tried to post an image but it's not easy. The switch is just below the sink on the front of the cabinet. It's big and says "ON" and "OFF" but nothing else. I followed the wires (Romex) but they disappeared behind the pantry wall.
  • Old-Biscuit's avatar
    Old-Biscuit
    Explorer III
    Dec 19, 2015


    I would image it is for the 'electric element' in water heater.
    Make sure water heater has water in it before turning switch ON because heater elements need water to keep them from burning out.

    IF you have a Suburban WH there will also be an On/Off Switch in outside compartment lower left corner. It has to be ON also for electric to heat water

    IF you have an Atwood WH there will also be an ON/OFF Switch on back of WH Tank on cover that goes over electric element
  • SoundGuy's avatar
    SoundGuy
    Explorer
    Dec 19, 2015
    Old-Biscuit wrote:
    I would image it is for the 'electric element' in water heater.
    Make sure water heater has water in it before turning switch ON because heater elements need water to keep them from burning out.


    Seems to me a switch that size, mounted where it is, would be too easy to inadvertently turn on and blow out the electric heating element if there's insufficient water in the WH tank. I'm thinking it's more likely the water pump switch.
  • gbopp's avatar
    gbopp
    Explorer
    Dec 19, 2015
    My guess is water pump, because of the switch location.

    Did you try following the wires?

    I'm probably wrong but, it doesn't look like a factory installation.
  • colliehauler's avatar
    colliehauler
    Explorer III
    Dec 19, 2015
    The large switch in mine is 110v by the awning for lights. If it's romex it would be 110v. The location is what seems odd.
  • SoundGuy's avatar
    SoundGuy
    Explorer
    Dec 19, 2015
    Go Dogs wrote:
    Is it for a water filter?


    Since we've never had or used a water filter I have to ask - what water filter intended for recreational vehicle use requires electrical power to operate? :h

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