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Old 01-18-2022, 01:26 PM   #1
Newmar Owners Club
Join Date: Aug 2018
Location: Detroit Lakes, MN
Posts: 73
Oasis not heating

This is just a heads up on an issue Iíve had for a few days that a ITR tech finally helped with. Iíve been searching the forum all morning and thought it was a bad pump, sensor on the water pipe, all sorts of ideas i got from the forums. Nothing really made sense. Totally frustrated.

I have had issue with the Oasis not heating the domestic hot water and or the Furnace for a few days. Sometimes it worked, sometimes not, sometimes the ACH green light was on, sometimes it wasnít. Tried all sorts of things, resetting, total electrical coach reboot, nothing worked.

Talked to the tech Kevin, great guy, He asked me a few questions, then said to hold-in the BYPASS and RESET buttons at the same time, then release the RESET first then the BYPASS. The Diesel Burner kicked in right away which it hasnít been doing for 2 days. He said ďyep, its your hot water tank Cycling Aquastat sensorĒ. So we turned off the power to the Oasis.

He then had me remove the cover where the hour meter is on top of the Oasis, looked at the furthest right sensor on the tank, remove the 2 green wires on the sensor and then he said to jump the wires with a 10 amp fuse.

The burner kicked in when I turned the power back on the Oasis. Problem solved temporally. He ordered up a new sensor $52.00 and its on its way.

He just said not to leave the jump connected all the time as the tank wont know when to shut down so the temp would be way too hot. No problem, Iíll just connect the fuse when we want to shower and unplug it when we are done. A pretty easy fix once I have the part. Id say 15 minutes just because its a little tight under the coach and the Oasis.

Ive attached a pic of the sensor and wires. Bad pic but thats life.
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Kris, Scott & Zepplin(2017 Red Fox Lab Retreiver)
2014 DutchStar 4364 450 hp
2017 Jeep Wrangler
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Old 01-18-2022, 03:03 PM   #2
"Formerly Diplomat Don"
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Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 20,441
Good info and great walk thru diagnosis and temp repair. I've always had good service from ITR.
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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Old 01-19-2022, 12:43 PM   #3
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Location: Braidwood Il.
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Those don't seem/look real common but exact brand and part # ones for Aquahot they get up to $70 for can be had for as low as $12 shipped . Might want to carry spare for each switch I imagine they are different temp. range.
95 Monaco Crown Royale
M11 400hp, 4060 trans.
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heat, heating, oasis

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