Hot water from toilet

[harleydawg57]

has anyone else ever had the on demand hot water activate when flushing toilet
It has happened to my 2017 Greyhawk several times now. Not every flush, but several times over a weekend.??????

[Bullitt6283]

Yes, I've heard of that happening.

Be sure to purge all air out of the lines, both hot and cold, and even the lines going to the outside shower.


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[TaftCoach]

Jayco may charge extra for a "Bidet Ready" package.

[THE MEEKER]

Originally Posted by TaftCoach

Jayco may charge extra for a "Bidet Ready" package.

"For those of you in Rio Linda, Ca."

https://www.youtube.com/watch?v=TwRmpmspgrg

It does exist!

https://www.thetfordmarine.com/us/el...ctronic-bidet/

[RetiredOne]

Originally Posted by Bullitt6283

Be sure to purge all air out of the lines, both hot and cold, and even the lines going to the outside shower.

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...and make sure the two manual outside shower valves are turned off, and not at just the shower head, so the water isn't mixing.

[SloPoke]

Originally Posted by harleydawg57

has anyone else ever had the on demand hot water activate when flushing toilet
It has happened to my 2017 Greyhawk several times now. Not every flush, but several times over a weekend.??????

If you mean:

1 The toilet flushes hot water - No

2 The blower starts up on the Water Heater, blows for 20-30 seconds and shuts off, but the burner does not kick in - It has happened a few times. Mostly when we don't purge the air from the Washer/Dryer air line after winterizing.

Our Girard has a water flow sensor that will trip when pressure will fluctuate quickly - and the air trapped in the Hot water Laundry pipe is not purged allows that water to move a little. - it trips the flow sensor and the Heater thinks for a second that there is water movement - starts the tankless WH heat cycle sometimes.

[JimD]

I have a 2017 Greyhawk and never had the on-demand turn on with a toilet flush. It would only turn on with a good amount of water flow through the hot water plumbing.

I hated that water heater so much I put in a tank model and now I have constant hot water without having to waste a bunch of water trying to get the old one to simply fire up.

On-demand water heaters need to sense water flow with a sensor connected to the water line at the heater. I suppose it could be a flaky sensor that activates with a little pulse in the water.

Like others have said it could be air in the line. That would be easy enough to remedy by bleeding all hot and cold outputs and possibly drain points. Does this only happen on pump or also when connected to city water?

Do you fill the black tank before dumping by holding the toilet open until the tank is mostly full? If not, try it and see if by chance the water going to the toilet is hot. If so, they hooked up the toilet to the hot water line instead of cold. In this case a normal flush may not be enough to trigger the heater but a longer flush would. Just an off the wall thought.

[Cavie]

Originally Posted by RetiredOne

...and make sure the two manual outside shower valves are turned off, and not at just the shower head, so the water isn't mixing.

same for the inside shower.