Good Sam Club Open Roads Forum: Class A Motorhomes: Water pump
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enblethen

Moses Lake, WA

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Posted: 01/27/20 10:06am Link  |  Quote  |  Print  |  Notify Moderator

Looks like it goes onto printed circuit board behind monitor panel
Monitor panel wiring diagram


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myface

Florida

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Posted: 01/27/20 11:46am Link  |  Quote  |  Print  |  Notify Moderator

Look like I have 2 switches. One on control panel and another on back ( external shower). I did flip the back water switch and got water. Can the back switch turn itself off?. I look at the diagram. It shows "remote water pump", but I do not have that switch on control panel.Could it be that the "remote water pump" refer to the back switch?. I still do not understand why I had to flip the back switch to get water.

enblethen

Moses Lake, WA

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Posted: 01/27/20 12:13pm Link  |  Quote  |  Print  |  Notify Moderator

Only if it is bad!
I would look for a bad connection on the control panel
With the aid of a helper check for continuity from each switch to the panel.
Test the switches with a meter.

4x4van

California

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Posted: 01/27/20 04:23pm Link  |  Quote  |  Print  |  Notify Moderator

dougrainer wrote:

cavie wrote:

You might have got it working but you have not fixed the problem. You should be able to turn the pump on and off from both locations.


If you do not have a pump controller and just 2 or 3 water Pump switches, then if ONE is ON, then you cannot turn the pump OFF from the other switches. Doug
Wrong. My Itasca has 2 water pump switches, no controller. It is wired just like 3-way light switches in a house. I can turn the pump on or off, from either location. If both switches are up, the pump is on. If both switches are down, the pump is on. If they do not match (i.e. one switch is up, the other switch is down), then the pump is off.


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enblethen

Moses Lake, WA

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Posted: 01/27/20 06:30pm Link  |  Quote  |  Print  |  Notify Moderator

The drawings indicate that the switches are a two way momentary. Monitor drawings donot show it, but looks as though it has a latching circuit.
You should be able to test at the circuit board for inputs and output to pump.
I would look for a loose connector, connection or bad switch.

dougrainer

Carrolton, Texas

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Posted: 01/28/20 05:54am Link  |  Quote  |  Print  |  Notify Moderator

4x4van wrote:

dougrainer wrote:

cavie wrote:

You might have got it working but you have not fixed the problem. You should be able to turn the pump on and off from both locations.


If you do not have a pump controller and just 2 or 3 water Pump switches, then if ONE is ON, then you cannot turn the pump OFF from the other switches. Doug
Wrong. My Itasca has 2 water pump switches, no controller. It is wired just like 3-way light switches in a house. I can turn the pump on or off, from either location. If both switches are up, the pump is on. If both switches are down, the pump is on. If they do not match (i.e. one switch is up, the other switch is down), then the pump is off.


MOST RV's do NOT use the 3 position switch like you have. They go the cheap way and use 2 position switches when they do NOT use a controller. I based my statement on the thousands of RV's I work on over 40 years. Yours is the odd ball. GOOD oddball. You would be amazed at how many RV's I have "Fixed" over the years because the Rv'er could NOT turn the pump off due to the switch method the OEM used. Doug

myface

Florida

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Posted: 01/28/20 06:29am Link  |  Quote  |  Print  |  Notify Moderator

Is got be be one of those 2 switches bad. Most like the one inside. Yesterday, to turn the pomp on(on back), I had to flip the switch down. Today I had to flip the switch up. I will try to find internal switch and replace.

enblethen

Moses Lake, WA

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Posted: 01/28/20 08:51am Link  |  Quote  |  Print  |  Notify Moderator

Remove switch, but first take photo of how the wires are connected. Switch should have some markings as to manufacturer, amperage and voltage.
JR products is a good source.
guessing it would be one like this on/off/on momentary

wa8yxm

Wherever I happen to park

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Posted: 01/28/20 04:42pm Link  |  Quote  |  Print  |  Notify Moderator

I have seen rigs with 3 or more switches. Momentary (touch touch or push one for on one for off) and if you had a drain leaking someone may have hit the outside switch.

But I suspect.. I have 2.. when the pump fails I've often had something bump up against the one I do not often use.


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myface

Florida

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Posted: 01/30/20 06:32am Link  |  Quote  |  Print  |  Notify Moderator

I think, that I found the problem. Any time the voltage overnite drop below 12V ( using heater) the pump turn off. Today the voltage stay above 12v and pump is working. I have no idea why, it could be some kind of sensor to prevent pump from overdrawing the battery.

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