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Old 07-25-2012, 11:42 PM   #1
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344 qb water heater question

I have turned the switch on our tankless water heater to low instead of auto and I believe i'm following the instructions correct when turning the water heater all the way on and then working back words to turn up the heat. The water is scolding hot and I cannot figure out how to fix this.

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Old 07-26-2012, 06:00 AM   #2
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Mine worked great until the blazing heat this summer. Then i could not get it to a comfortable temperature without adding a bit of cold water. This past weekend I removed the water pressure regulator from my hose. That seemed to improve the situation. It seems that a lot of these campgrounds have poor water pressure, which I'm sure exacerbates the issue.

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Old 07-26-2012, 06:47 AM   #3
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I don’t have an answer for you, but it probably has to do the with temperature of the water coming into the trailer. This has been a hot dry summer and in some areas the ground water is coming in at 80 degrees. After passing through the tankless water heater, water that warm is probably coming out of the faucets at 115 degrees even at the low setting.

Also at this time of year a water hose will heat the water to bath temperature, even hotter if the hose is setting in direct sunlight. If this is the case you might have to turn on the cold faucet first to clear the hot water out of the hose.

Just some thoughts to consider.

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Old 07-26-2012, 07:29 AM   #4
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There is a thread here somewhere regarding tankless water heaters.
You may find what you are looking for there.

Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
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Old 07-31-2012, 08:09 PM   #5
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Contact Girard. They have a fix for this problem. If your water coming in is more that 70 degrees then you will not be able to get the water cool enough. I am waiting on the parts for our 313RE
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Old 08-02-2012, 08:48 AM   #6
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Location: Wildcat Plant - Elkhart, IN
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Exclamation Contact Girard!

Please call Girard's Tech Support Department if you need help:
Mon - Fri, 7:30AM to 4:00PM.

Ask about their "Extreme Warm Weather Conversion Kit," which solves the issue of very high temp incoming water supply.
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Old 08-04-2012, 11:18 AM   #7
Join Date: Mar 2012
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I have tried everything to make the tankless water heater work. I have called the factory and have done everything that was asked. We even installed a VSD pump to regulate the water flow and it still goes from hot to cold to hot and so on. I found it does not work when the fresh water temp is warm as during this hot summer. I am surrendering and having a tank type water heater installed next week. Most of our camping is with electric only and it wastes a lot of water. The tankless water heater does not work for us! This is not the first change out by the dealer. I am sending my tankless water heater to the junk pile where it belongs. If you are having problems too, just bite the bullet and get rid of it. That is my advice.

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Old 08-12-2012, 10:38 PM   #8
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I finally got the Extreme Weather Kit to work. You need to have the inside switch set to Auto/High and the Extreme Weather switch on before you turn the Water Heater on. This resets the unit for the lower BTU settings. I also found that the wires to cold water sensor needs to be spliced together bypassing the sensor. The kit will not work unless this is done. The kits raises the temp about 10 degrees to 97-99 degrees. If you want it hotter for washing dishes the set the inside switch to low. Seams backwards but that is the way it works. I tested the unit at different water pressures with my Watts adjustable regulator at the house and everything worked great. I am itching to take it to a campground to see how well it works. The family loves the endless hot water.
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Old 08-13-2012, 02:09 AM   #9
Join Date: Mar 2012
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I am glad you fixed the problem. We just had the new tank type water heater put in and we would never go back. If you are not satisfied, a Suburban 6 gal slips right in. Plenty of hot water for my wife and me. The tankless water heater just has too many rules and settings. It just doesn't work for us and requires constant tinkering.

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Old 08-20-2012, 08:01 PM   #10
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What and where would an Extreme Weather Switch be? I have a 2013 Wildcat 353LS. Maybe I don't have it.

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