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Old 08-02-2017, 12:30 AM   #1
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Default Water pump issue

We turned on the water pump our last day on the road this spring and it kept running. Didn't shut off so I turned it off after half a minute. Wondering where the water was going, I walked outside and found a puddle of water under the RV. I had hubby turn the pump back on while I looked underneath. The water seems to be coming from the frost valve drain, or right next to it. So the pump is pumping the water from the fresh water tank out onto the ground. We were not connected to city water but were stopped at a rest area.

Any ideas of what's going on?

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Old 08-02-2017, 12:45 AM   #2
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Originally Posted by Jillie View Post
We turned on the water pump our last day on the road this spring and it kept running. Didn't shut off so I turned it off after half a minute. Wondering where the water was going, I walked outside and found a puddle of water under the RV. I had hubby turn the pump back on while I looked underneath. The water seems to be coming from the frost valve drain, or right next to it. So the pump is pumping the water from the fresh water tank out onto the ground. We were not connected to city water but were stopped at a rest area.

Any ideas of what's going on?

2013 Roadtrek CS Adventurous


Call RT tech support.


It could be your water heater frost relief valve is tripped.
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Old 08-02-2017, 01:24 AM   #3
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Thanks. Will check that tomorrow.
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Old 08-02-2017, 02:52 PM   #4
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did you check your outside shower faucets?
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Old 08-02-2017, 07:19 PM   #5
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did you check your outside shower faucets?
What am I looking for? Water not turned off?
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Old 08-02-2017, 07:29 PM   #6
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What is a "frost valve drain"? Are you talking about the drain on the fresh water tank?
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Old 08-02-2017, 07:36 PM   #7
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What is a "frost valve drain"? Are you talking about the drain on the fresh water tank?
It's a valve under the driver side back bench seat. If the temperature drops into the mid to low-30's, it will open, draining the water from the heater and water lines to prevent freezing damage.
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Old 08-02-2017, 09:01 PM   #8
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Default Frost valve drain

"It's a valve under the driver side back bench seat. If the temperature drops into the mid to low-30's, it will open, draining the water from the heater and water lines to prevent freezing damage."

That is a new one to me. Anyone have a link to such a device? Electronic,
thermo mechanical? I have looked and haven't found one yet.
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Old 08-02-2017, 09:57 PM   #9
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A frost plug is typically purely mechanical. Designed to fail when water creates pressure from expansion at temperature.
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Old 08-02-2017, 10:27 PM   #10
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What type of water heater is in your van? Maybe not a standard Suburban but an Alde with a frost control valve??

A description from good ole Campskunk...

How an Alde Hydronic System Works | Roadtrek Blog
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