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Old 09-22-2014, 02:15 AM   #1
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Brand: Thor Motor Coach
State: Florida
Posts: 4
THOR #1139
All hot water in shower/ no cold

I am a new owner and RV rookie. When I turn on water heater, doesn't matter tank or supply, all I get is hot water in the shower. Kitchen sink is fine. Any ideas what's going on? I'm on the road and could use some help if my wife is ever going to speak to me again!
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Old 09-22-2014, 08:07 AM   #2
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Brand: Thor Motor Coach
Model: 2011 Four Winds 28Z
State: Michigan
Posts: 1,273
THOR #531
If you turn the shower's hot water valve off, and the cold water valve on, any water come out of the shower head?
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Old 09-22-2014, 12:40 PM   #3
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THOR #1139
Thx for the post! Yes, water will flow from both hot and cold valves to the shower independently.
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Old 09-22-2014, 02:10 PM   #4
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Model: 2011 Four Winds 28Z
State: Michigan
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THOR #531
So you are getting hot water out of the cold water valve?

I can't think of a scenario right now where that would happen. I'm stumped.
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Old 09-23-2014, 02:26 AM   #5
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Thanks for making me not feel totally crazy. I'm stuck too. The unit only has 5k on it so maybe a call to previous owner might shed some light. I'll post when I find the answer!

Thanks for your valuable time! Coop
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Old 09-23-2014, 03:18 AM   #6
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THOR #531
The only thing I can suggest, and I am really not sure it would make a difference, is to make sure the hot water bypass valves are in the correct position.

On your water tank, there should be three valves that constitute a winterizing bypass.

There is a valve on the hot water side, on the cold water side, and a crossover valve - physically located between the two other valves.

In the summer, when using the hot water tank, both the hot and cold water valve should be open, and the crossover valve should be closed.

In the winter, during storage, both hot and cold water valves should be closed, and the bypass valve should be open. This effectively removes the hot water tank from the water system and couples the hot and cold water lines together. This is done for expediency in draining and winterizing the system (whether you blow it out or put pink antifreeze in it).

The only thing I can suggest is make sure all three valves are in the correct position.
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