Hot Water Flow Inconsistent w/ Pump

[Brandt51]

I've searched and I'm not sure if my problem is the same as others.

When NOT hooked up to city water, my hot water flow is inconsistent and spurts a lot, like there's an air pocket built up in the lines or something. Only hot water from the kitchen sink, bathroom sink and shower. Cold is fine. Also, the pump runs for a long time after water is shut off.

Any ideas or where to look?

Thank you!

[scottxpc]

Check your hot water bypass sounds like it's in bypass mode

Originally Posted by Brandt51

I've searched and I'm not sure if my problem is the same as others.

When NOT hooked up to city water, my hot water flow is inconsistent and spurts a lot, like there's an air pocket built up in the lines or something. Only hot water from the kitchen sink, bathroom sink and shower. Cold is fine. Also, the pump runs for a long time after water is shut off.

Any ideas or where to look?

Thank you!

[Thom]

Burp your water heater tank, open the pressure relief valve until water comes out. For safety reasons, turn it off and let it cool down some first.

A second item to check is your outdoor shower hook up if you have one, make sure both valves are closed when the hose is not in use. If these valves are left open, it will cause the hot and cold water to mix there and travel throughout your whole system.

[joebedford]

I replaced my water pump to eliminate symptoms like that.

[persistent]

I replaced my water pump because of symptoms like that, but both hot and cold water were pumping air. (Air in the lines causes the spurting as it passes through the faucet valve.) The pump chamber had a crack on the low pressure side.
Air has to be getting in some how. If it is truly only hot water, there may be air in the hot water tank. The air will eventually be forced out and the spurting will stop spontaneously. Every time you drain the hot water tank there will be more air trapped in the tank when you seal it and start pumping again. Air in the tank causes the pump to run longer after shutting off the faucet. The less the air, the shorter the after run.

[Brandt51]

All suggestions followed, thank you. Still not fixed and has worsened. Spurts air in hot and cold (maybe it did before?). Pump still will NOT shut off. Any ideas? Cracked supply line to the pump inlet?

[franktafl]

I had a bad pickup in the fresh water tank. Air when it gets down to 1/4 tank.

[John_C]

Originally Posted by Brandt51

All suggestions followed, thank you. Still not fixed and has worsened. Spurts air in hot and cold (maybe it did before?). Pump still will NOT shut off. Any ideas? Cracked supply line to the pump inlet?

Hi Sam,
I am not really familiar with the Dutchman family of trailers yet; however, I have a few questions. When not connected to "City Water", the water must come from the Fresh water tank. Assuming you checked the before mentioned items from the group, I have to ask:
1) How much water is in the fresh water tank?
2) Have ALL bypass and winterizing valves been closed/set to non-bypass mode; My cruiser by-pass valves had to be set just right to prevent any bypass?
3) Do you see any leaks or drips anywhere; the suction side may not show a large leak?
Good luck...

[joebedford]

Originally Posted by Brandt51

All suggestions followed, thank you. Still not fixed and has worsened. Spurts air in hot and cold (maybe it did before?). Pump still will NOT shut off. Any ideas? Cracked supply line to the pump inlet?

I solved exactly the same symptoms as you be replacing the pump. Same model so it just snaps in - didn't have to change any fittings or pipes. $92 on Amazon.

[Brandt51]

Hello,,

I replaced the pump and no change. I’ve had this issue before, but far worse when the ounpninket fitting was cracked on the little filter piece, but it all looks good. And the pump would still turn off with no demand.

Fresh water tank is full (140 gallons). Bypass and winterizing valves set to norm. The pump switch light is dimmer than the other switches, but I don’t that’s an issue. I’m going to check the amp draw regardless. I’m going to go back into the basement and see what I can find.