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Old 03-01-2017, 06:47 AM   #15
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While not having one and just reading the manual quotes previously stated and having seen videos if how the Truma works.

The combi unit is a single self contained assembly, if furnace is in use it requires a higher degree of heating and whereas the water piping coil is run thru heating chamber, no matter what, the water in the tubing will be heated. This is why the 162 disclaimer is there, as the furnace prioritizes the air temp and will just over heat the water.
When just hot water is selected, it does not require as much heat generation, max water temp is now in effect (much lower than 162) and without the air being pulled through it does not cool off as easily. Thus it can be much more efficient.
If you run the furnace for an extended period of time and after a while turn on just the hot water and it is not at Max temp, once the line clears, then the issue would be with the plumbing mixing as any water actually passing through the unit has no choice but to heat. WHEN TESTING THIS, DO NOT TOUCH THE WATER COMING OUT if its working properly you will be BURNED BADLY.
If the furnace tests works properly, then shut the heat completely off and just try the hot water running, this will test the components of the Truma and if it doesn't work now then it is most likely the unit and it's sensors.

So, if with heat/furnace it doesn't work, then plumbing. If with heat it works and just hot water it doesn't, then Truma unit is questionable.
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Old 03-03-2017, 08:12 PM   #16
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Fixed! Kevin at Airstream Adventures NW directed me to turn a valve off in the furnace compartment. In our Basecamp, it was a small black valve on a small white pipe, uppermost, about half way between the furnace unit and bathroom wall. Kind of hidden under ducts and wires. Lots and lots of hot water now!
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Old 03-03-2017, 08:18 PM   #17
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Congratulations.

But that just means it works in your driveway. It might not work in Yellowstone, now you'd better get out there and check it everywhere while it's still under warranty.......
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Old 03-03-2017, 08:50 PM   #18
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Quote:
Originally Posted by nwcamper View Post
Fixed! Kevin at Airstream Adventures NW directed me to turn a valve off in the furnace compartment. In our Basecamp, it was a small black valve on a small white pipe, uppermost, about half way between the furnace unit and bathroom wall. Kind of hidden under ducts and wires. Lots and lots of hot water now!
Thanks for the followup. Could you explain what this valve is, and does your owner's manual explain this process? [See Post #11 for a link to an online version of the manual.]

It will help future readers of this thread to replicate your solution to know this info..

Thanks,

Peter
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Old 03-06-2017, 06:20 PM   #19
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Thanks for your post, annebelle. We had a similar issue on our first trip with our Basecamp. We had propane and electricity, we were plugged into 30 amp, and we tried all sorts of configurations to get hot water. We tried each setting on the Truma Combi Eco Plus for the hot water setting, waited 30 minutes, and tried another setting. The Boost setting gave us some lukewarm water and then it went back to cold. We were in central Arizona just below the Mogollon Rim so the outside temp was probably 48-50 that night. We are going to drive the Basecamp down to Phoenix after a couple more test trips and see what the dealer says.
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Old 03-07-2017, 03:00 PM   #20
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Hi - thanks for the quick responses. Here is more detail - I had both propane and electric on and other appliances were working from both. There was just a little bit of hot water but then it ran out to cold. The furnace was working great and batteries were fully charged. My worry is that hot water is an issue if you are using the furnace (it was cold outside - 34 degrees). No strainers blocked as this was our first time out and the bypass was off. I tried Boost but no luck....I will check on the other things that were posted this weekend. Thanks!!
Have you tried the fix suggested in Post #16?

Thanks,

Peter
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Old 03-07-2017, 03:01 PM   #21
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Originally Posted by basecamp516 View Post
Thanks for your post, annebelle. We had a similar issue on our first trip with our Basecamp. We had propane and electricity, we were plugged into 30 amp, and we tried all sorts of configurations to get hot water. We tried each setting on the Truma Combi Eco Plus for the hot water setting, waited 30 minutes, and tried another setting. The Boost setting gave us some lukewarm water and then it went back to cold. We were in central Arizona just below the Mogollon Rim so the outside temp was probably 48-50 that night. We are going to drive the Basecamp down to Phoenix after a couple more test trips and see what the dealer says.
After you meet with the dealer, could you comment on the suggested fix in Post #16?

Thanks,

Peter
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Old 03-07-2017, 03:20 PM   #22
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Amazing First Trip But Not Much Hot Water...

[QUOTE=OTRA15;1920226]Have you tried the fix suggested in Post #16?

Thanks,
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Old 03-07-2017, 06:36 PM   #23
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It works!

I just tried the fix mentioned by nwcamper and I am happy to report that annebelle's Basecamp has hot water galore! Just in time for a long weekend at Deception Pass. 😊
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Old 03-07-2017, 08:23 PM   #24
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If possible, the title of the thread should be changed to Basecamp Hot Water issue or something, so that it is easily found, seems like there will be others looking for it.
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Old 03-07-2017, 09:27 PM   #25
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Hi everyone - #16 did the trick! Thank you!!
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Old 03-08-2017, 06:24 AM   #26
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Quote:
Originally Posted by nwcamper View Post
Fixed! Kevin at Airstream Adventures NW directed me to turn a valve off in the furnace compartment. In our Basecamp, it was a small black valve on a small white pipe, uppermost, about half way between the furnace unit and bathroom wall. Kind of hidden under ducts and wires. Lots and lots of hot water now!
We are picking up our base camp soon. Any idea what that valve controls and if you have found it in any of the manuals? As similar people had issues was perhaps in a winterizing state?
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Old 03-08-2017, 06:35 AM   #27
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Thanks for the updates annebelle and Rich. Is this valve referenced in your owner's manual, or the Truma mfg. documents? [See Post #11 for online manual]

It would be very helpful if you can point the way to some documentation of this fix for everyone to see. Any chance of some photos showing the valve, and its relationship to the space it is in?

Is this some kind of tempering valve which mixes cold water into the hot, to prevent scalding hot temps, perhaps?

Thanks again,

Peter


Quote:
Originally Posted by annebelle View Post
Hi everyone - #16 did the trick! Thank you!!
Quote:
Originally Posted by PNWRich View Post
I just tried the fix mentioned by nwcamper and I am happy to report that annebelle's Basecamp has hot water galore! Just in time for a long weekend at Deception Pass. ��
Quote:
Originally Posted by nwcamper View Post
Fixed! Kevin at Airstream Adventures NW directed me to turn a valve off in the furnace compartment. In our Basecamp, it was a small black valve on a small white pipe, uppermost, about half way between the furnace unit and bathroom wall. Kind of hidden under ducts and wires. Lots and lots of hot water now!
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Old 03-08-2017, 06:49 AM   #28
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The only reference in the manual that seems associated is on page 8-13

2. Open both bypass valves, before and after the
Truma system, to isolate the system before adding
antifreeze.

While they provide really nice electrical schematics in the manual, it would be nice if they did the same thing for the plumbing.
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