Water pump is on - can't control water temperature in shower

[marcesq]

On city water, with the water pump on, the shower is either full hot or full cold. The pump isn't consistently on, but control doesn't change whether I hear it operating.

When I turn the pump off, I get normal control of the shower temperature.

I have control of the water temperature in the sinks no problem.

Is this normal or do I have an issue?

Thank you

2017 Flying Cloud 30FB

[wulfraat]

Sounds like a defective mixing valve insert in the shower valve body.

[mixedpuppy]

Why do you have the water pump on when you're on city water? The water pump is for water from the fresh water tank.

[TG Twinkie]

If you shut the city water off and run the pump you will probably see normal operation as well.
Again! Why do you have the pump on when you are on city water?

[Mattirs]

The other thing that might be happening is your outside shower is on but turned off by the check valve. Make sure the it is turned off at the fixtures.

Matti

[dst]

Originally Posted by wulfraat

Sounds like a defective mixing valve insert in the shower valve body.

We just had our mixing valve on 2017 23FB replaced under warranty. Either all hot or all cold, but much in between. Maybe they got a bad batch.

[banderabob]

Possibly the mixing valve directly on the water heater? That’s what I had to replace when I had the same problem.

[4mer Paddler]

[QUOTE=TG Twinkie;2095895
Again! Why do you have the pump on when you are on city water?[/QUOTE]

We’ve had to do that a couple of times in campgrounds that lacked water pressure, especially at peak times. Turning the pump on allowed it to make up the pressure for a shower or two in the morning.

[Commish]

Originally Posted by marcesq

On city water, with the water pump on, the shower is either full hot or full cold. The pump isn't consistently on, but control doesn't change whether I hear it operating.

When I turn the pump off, I get normal control of the shower temperature.

I have control of the water temperature in the sinks no problem.

Is this normal or do I have an issue?

Thank you

2017 Flying Cloud 30FB

Just curious why you are running the water pump when connected to shore water. I’ve aleays been told that’s a quick way to burn out the pump.

[OTRA15]

Originally Posted by marcesq

. . .
Is this normal or do I have an issue?
. . .

Is the problem still happening? Would you please review the earlier replies, and update us with more details and answers to the questions raised.

Thanks,

Peter

[blkmagikca]

Originally Posted by wulfraat

Sounds like a defective mixing valve insert in the shower valve body.

I had that same problem and a new cartridge in the shower valve fixed it. Just take the old one with you so they can match it up.

[OTRA15]

Originally Posted by blkmagikca

I had that same problem and a new cartridge in the shower valve fixed it. Just take the old one with you so they can match it up.

Did your situation depend on the variable of the pump being on and off, like the OP?

Ignoring the fact that it should usually not be necessary to turn on the pump in addition the city water, is the shower valve perhaps sensitive to excessive water pressure?

Thanks,

Peter

Originally Posted by marcesq

On city water, with the water pump on, the shower is either full hot or full cold. The pump isn't consistently on, but control doesn't change whether I hear it operating.

When I turn the pump off, I get normal control of the shower temperature.

I have control of the water temperature in the sinks no problem.

Is this normal or do I have an issue?

Thank you

2017 Flying Cloud 30FB

[marcesq]

Well I took a shower this morning without the pump on and had trouble getting the temperature right. This time around, it seems the water pump didn't make a difference.

My guess is the cartridge in the shower. I think I would have an issue with hot water at the sinks if it was a problem with the water heater or something else.

I will have the dealership take a look while they assess my tire blowout damage.

[OTRA15]

Thanks for the update, sounds like a good plan!

Peter

[marcesq]

So the dealership noted it wasn't worth a fight with Airstream over the shower cartridge, so I just replaced it now with a Danco from home depot - moen part number 1222. The removed Moen looked a bit crudy but not noticeably damaged, clogged etc. It seems to be working... Knock on wood.

I also replaced the shower head, which had cracked with a Camco - seems to work great and a ton cheaper than the Delta.

I will report back if I managed to screw it up.

[Vantair]

Like others we replaced the stock shower mixing valve with a new due to it being physically stuck. But on one of our first trips still had whacky non-control of the shower temps. Mostly luke warm initially then “cold” flow.

Ultimately determined the simple mix valve at the water heater through storage door was not in closed position separating the cold and hot as it pushed through trailer. Had some ingnorant chilly showers until closing this bad boy !

Ah the fun learning these rigs.

[wave man]

Geez I need to check that on mine Vantair, same experience here and I thought warm was going to be par for the package!!

[rmkrum]

A winterizing bypass valve on the water heater that is not quite fully closed will do weird things to water temperature...especially on the old setups that used three separate valves....

Another good way to have this issue is an outdoor shower that has the hot and cold valve open, and the showerhead turned off. That's another weird one to try to find...

[blkmagikca]

[QUOTE=marcesq;2119332]
I also replaced the shower head, which had cracked with a Camco - seems to work great and a ton cheaper than the Delta.

I will report back if I managed to screw it up.[/QUOTchanged it to E]

You should have changed to an Oxygenics shower head.

[marcesq]

Originally Posted by blkmagikca

You should have changed to an Oxygenics shower head.

Are you referring to the BodySpa?



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