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Old 09-01-2016, 05:30 PM   #41
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I added a full shutoff valve and a one way valve on the hot side which is similar to the kit shown only cheaper. It didn't fix the problem. The real issue is inside the Girard water heater. There are two safety devices, a flow sensor and a temperature sensor, that take time (and water) before the unit will re-ignite and heat the water after a shower turn off. My Atwood gas heater with 1400w electric rod "almost" acts like a tankless when both gas and electric rod are turned on.
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Old 02-21-2017, 10:09 AM   #42
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Since October 2016, I have had a 2017 Eagle 321RSTS fifth wheel with Girard gen 3 tankless water heater. It works well with full hookup and unlimited sewer but not for boondocking. The problem is it takes 0.8 gallons per minute hot water flow to activate the water heater, and 7 seconds at that flow before the heater activates, then another 10 seconds or so before the water reaches temp, then the time it takes to get to the faucet. This means running at least a half gallon of water down the drain before it gets warm, each time you turn on the faucet. Also, the Girard does not heat at all when using the water pump from the fresh water tank, because the pump flow is only 0.86 gpm and it surges so does not get above the activation flow of 0.8 gpm for long enough for the water heater to stay activated. I'm currently discussing this with Jayco and Girard but no fixes yet. Has anyone else had this problem?
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Old 02-21-2017, 10:48 AM   #43
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Jayco replaced my Version 2 Girard thankless water heater in our 2016 mv29 with the version 3. It took a year of phone call and 3 trips to the dealer to get it replaced . The version 3 worked as it was designed . I am not able to use any water filter in the RV as it restricts the flow an the heater will not work at most campsites. I added a accumulator tank to make the heater work with the water pump and removed the filter . I have to clean the screen in the bathroom sink when the flow drops and the heater wont come on . On our trip last week the black water tank lasted more than seven days ( 30 gal ) with two adults . The gray water (40 gal ) would not make the second day . The on demand water heater is not for boon docking. I purchased a 42 gal water tote for camping with out sewer hook- up which works out satisfactorily . In the dealers defense I was offered a 6 gal standard water heater but refused it . I would have taken a 10 gal . When this heater fails and the unit is out of warranty I would replace it with a Truma brand water heater . The Truma unit works well . the Truma has a recirculating pump and tank built in the unit None of the authorized in the in the area have installed any as of yet and installation Quotes ranged from $1250 to $1750 . It is the same size as the Girard .
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Old 02-21-2017, 01:00 PM   #44
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Thanks, that's all good information and it's nice to know of another option if ones gives up on the Gerard at so,e point.
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Old 02-21-2017, 02:21 PM   #45
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Hi Jon,

Since I boon-dock a lot, I opted to replace the "thankless" water heater with a Suburban tanked. The 6 gallon fits in the same hole, and with the electric heater option, it "almost" acts like a tankless. I'm a happy camper now.

Here's some pics:

http://www.jaycoowners.com/forums/me...lbums1132.html
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Old 02-21-2017, 02:55 PM   #46
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Thanks to all for your input! It looks like Davidmac and I have done similar research. I'm going to replace the Girard Tankless with a Truma Aqua Go "Comfort" model. This Truma model needs only 0.4 gpm to activate on-demand heat, and has a small water tank that stays heated so hot water is always immediately available. The Truma is expensive, and I would have gone with a 10 gal tank model but Jayco only offered a 6 gal in my rig, so I ordered the new Girard but knew it was a risk. I'm trying to get Jayco to reimburse me for the Girard under the warrantee because it doesn't work with the water pump, but they are saying they have not heard of anyone else having this problem. Your posts will help my position. I've already decided to install the Truma no matter what Jayco does.
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Old 02-21-2017, 03:51 PM   #47
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I have the Girard instant water heater in my new 2017 Greyhawk 29' class C, but don't know what generation it is (model GSWH-2). I'm brand new to the RV lifestyle and am still trying to figure out how all of this works and the culture of these RV parks.

The heater seems to work really good, but only with patience. I set the temp to 105 so that I don't have to mix the hot & cold in the shower. When I turn off the hot water taking a Navy shower, the heater turns off. When I turn the water back on to rinse off, it will run hot for half a minute, then cold for a half minute while the heater turns itself back on. It will then continue to run hot until turned off again. Same way at the kitchen sink. The heater turns itself off after about 20 minutes of no use.

I have been told by the dealer that there is a recall fix on this heater, but they wouldn't let me do it myself. I can wait until I get back home to Missoula where they can do it.
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Old 02-21-2017, 04:52 PM   #48
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Yes, your GSWH-2 is the generation 3 and latest model. Good luck with it. I find it nice to take a long hot shower, as long as I have plenty of grey tank capacity and am able to leave water on at high flow for the whole shower. All other uses other than continuous high flow are unacceptable to me, but there seem to be those that are more okay with it.

I'd say get some more experience with it and post what you think here afterwards.
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Old 02-21-2017, 04:58 PM   #49
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I posted this thread a few months ago about a TSB issued for the Girard Tankless Water Heater. The dealer replaced the 2 solenoids. Never had a problem since.

http://www.jaycoowners.com/forums/f5...ion-39525.html
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Old 02-21-2017, 06:34 PM   #50
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Quote:
Originally Posted by jgerhard View Post
Hi Jon,

Since I boon-dock a lot, I opted to replace the "thankless" water heater with a Suburban tanked. The 6 gallon fits in the same hole, and with the electric heater option, it "almost" acts like a tankless. I'm a happy camper now.
Our dealer swapped out our original Girard for the Suburban 6-gallon water heater. The Girard was a constant problem, but we've not had a moments trouble with the Suburban.
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