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Old 08-19-2017, 09:26 AM   #1
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Leak! Oasis heating module

I've got a thermal transfer fluid leak somewhere INSIDE my Oasis heating module (pictures below). This is the main heating unit NOT the distribution module. Anyone run into this before? If so what was the problem?
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Old 08-19-2017, 11:52 AM   #2
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We have same coach. Will standby for solution. May happen to us too someday.
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Old 08-19-2017, 01:39 PM   #3
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Hi Phil - You might want to post this on http://forum.rvhydronicheaterrepair.com/forum.php Roger does mostly Aquahot but Randy from Oasis is there and this might be a common issue.

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Old 08-19-2017, 03:03 PM   #4
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Below is a link to the ITR support website that has many resources including the service manual. I would remove the covers to get inside the unit in an attempt to locate the source of the leak. Hopefully, just a loose hose clamp.

Manuals & Brochures – Itrheat


Please keep us posted.
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Old 08-19-2017, 03:33 PM   #5
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If you take the front cover off the unit, you should be able to see what might be going on. Also, check the hose clamp on the over flow hose in the top of the unit.
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Old 08-20-2017, 06:11 AM   #6
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My Oasis had a leak also. I found the hose fitting on top was lose. The fitting was installed finger tight. Made a mess on top of my unit and in the inside.
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Old 08-20-2017, 09:31 AM   #7
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My sight glass on the front of the unit would fog up and the system would require a small amount of boiler fluid to be added every week. We operated it this way until we were able to get home, which is 20 miles from the Newmar plant, where the Oasis unit was replaced at no charge by the company that makes the Oasis unit. This was after the warranty had expired. They said there was a leak somewhere inside the boiler unit itself.
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Old 08-20-2017, 11:09 AM   #8
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I just got through replacing my Oasis unit because of a very similar leak
I kept loosing fluid out of the overflow jug in the engine compartment. Upon closer research I found fluid in the pan under the Oasis unit. Took everything apart , and the Oasis boiler had several pin holes along the weld
Had to replace the whole boiler unit ( for about $2700.00) and it's been working fine since
This may be a problem with Oasis units. Their welds don't seem to be inspected before the are put into the units
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Old 08-20-2017, 02:10 PM   #9
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Leak! Oasis heating module

Found my leak. Here is a picture of it streaming out a pin hole below the pressure cap. Didn't notice before because the rubber boot covered the problem and the fluid was going down and into the boiler. Bummer. Hopefully my dealership can get a warrantee replacement quickly!Click image for larger version

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Old 08-20-2017, 03:49 PM   #10
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Hi - From what you saw was it a poorly done solder joint? Looks that way in the photo.

Tom
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Old 08-20-2017, 04:43 PM   #11
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Maybe. Seems like that might be the case, but I don't think it's repairable. My guess is that it's gonna require a complete replacement of my oasis unit
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Old 08-21-2017, 07:52 AM   #12
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What made you push the rubber boot down. And look for a leak there. Good insight.
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Old 08-21-2017, 10:15 AM   #13
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There were a couple of dribbles on the top of the boot. Was just wiping them clean and felt a really warm stream in my hand!
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Old 08-21-2017, 06:40 PM   #14
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Mount Comfort RV to the rescue! They got my coach right in and have already connected with Newmar and ITR. Will keep all posted on the outcome.
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