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Old 11-13-2015, 10:45 AM   #1
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Hot water fluctuates

Can anyone tell me the secret to consistent temperature in the shower. Some days it works great. Some days it fluctuates between hot and cold about every 20 seconds. We have the instant tank and I understand all the concepts about using the hot only and regulating based on the pressure, but even so, it's like it goes on and off. Laundry is not going and no other uses. Propane is full tank. What else can I check?

Thanks!
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Old 11-13-2015, 10:54 AM   #2
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Bypass valves?
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Old 11-13-2015, 11:08 AM   #3
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I don't think so because it is getting hot...it just fluctuates.
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Old 11-13-2015, 11:14 AM   #4
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Mine did that this morning while showing for the first 5 minutes then it acted right the rest of the shower time. Weird I thought because it never fluctuated on me before. I'll let you know if I figure anything out.
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Old 11-13-2015, 11:36 AM   #5
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Check to make sure the valves in the outside shower are turned off ( not just the shower head). This can cause the problem you are seeing.
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Old 11-13-2015, 11:48 AM   #6
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Thanks for the heads up on the outside shower. I checked they are off, I'll keep looking
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Old 11-13-2015, 12:18 PM   #7
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Fluctuating water temperature is usually caused by rapidly fluctuating pressure if the bypasses are closed. Are you on public water or running the pump when it happens?

If on the pump you can add an accumulator tank to level out the pressure changes and that will probably help.
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Old 11-13-2015, 11:25 PM   #8
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On public water and using a pressure regulator.
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Old 11-15-2015, 02:11 PM   #9
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Quote:
Originally Posted by chabbey View Post
On public water and using a pressure regulator.

I assume you have a Garerd gen ll. If so look at the gen lll upgrade. It is supposed to be great. I had my gen ll switched for an Atwood and are much happier.
As for what you have now. The water regulator needs to be adjustable. The cheap ones that are preset are junk and don't work with the Gerard. Get a good one with an adjustment and a good gage. Set it to 55 lbs. adjust the output so the water is to your liking. It will change as the input temp changes. If you have the gen l you really need to call and talk to Randy about getting it upgraded.
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Old 11-15-2015, 03:22 PM   #10
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How do you know which Gen it is? The model is GSWH-1
Who and where is Randy?
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