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Old 02-21-2021, 08:45 PM   #1
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Heat coming from under sink cabinet

We have a 15 DSDP4369. On our current trip we have been experiencing heat coming from the cabinet under kitchen sink. What is located behind cabinet that could be generating heat. Drawers under cooktop are warm as well but not as bad. Any ideas are appreciated.
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Old 02-21-2021, 09:25 PM   #2
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We have a 15 DSDP4369. On our current trip we have been experiencing heat coming from the cabinet under kitchen sink. What is located behind cabinet that could be generating heat. Drawers under cooktop are warm as well but not as bad. Any ideas are appreciated.
Your water heater.....if you don't need hot water turn off AC 1 and 2. We usually only turn on burner before showers and laundry or dishwasher. If you leave them on all day your coach will be warm.
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Old 02-21-2021, 10:14 PM   #3
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Your water heater.....if you don't need hot water turn off AC 1 and 2. We usually only turn on burner before showers and laundry or dishwasher. If you leave them on all day your coach will be warm.
Even with an Oasis on demand water heater? Never had this issue until now!
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Old 02-21-2021, 10:41 PM   #4
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We have a 4369. Issue may be your zone 1 valve is stuck. Both our valves for zone 1 and 2 were defective and the boiler fluid flowed backwards under pressure from summer loop pump.

Newmar has an odd valve setup that relies on static pressure to operate.
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Old 02-22-2021, 06:19 AM   #5
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Sometimes the valves get stuck, they are usually located behind the Oasis Unit you can access them from the other side of the Bay.

Lightly tap on the valves with a hammer, wrench, etc. It may help to free a loose valve.
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Old 02-22-2021, 06:40 AM   #6
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Did you put your bypass switch to on or was it moved to the on position somehow? Heat in your kitchen cabinets is the most notable indicator of the Oasis system being in the bypass mode.
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Old 02-22-2021, 11:05 PM   #7
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How would if it is in “bypass mode”? There were 2 light in on the unit when I checked it earlier. Pushed the bypass button and nothing changed. Turned unit off then back on and hit the reset button. 3 hrs later and still heat in kitchen cabinets including utensil drawer. Decided to turn off completely overnight and retry in the morning. Any other ideas welcomed. If leaving it off overnight doesn’t change things........then I’ll climb in storage bay and try to “ find” and lightly tap on valves
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Old 02-22-2021, 11:19 PM   #8
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You didn't say if you are using the furnace of not. If yes maybe one of the heat registers has come loose and some of the heat is going up into the cabinet.
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Old 02-23-2021, 12:48 PM   #9
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Do you have the furnace set to (ON) on the thermostat and just turned down below what is needed. If so, the unit can be circulating boiler fluid waiting for a call to heat, when the fans would come on.
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Old 02-23-2021, 03:46 PM   #10
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Press the reset button on the Oasis.. have seen this happen where heat will come from a register but the blower isn't on... a reset of the oasis fixes it..
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Old 02-23-2021, 08:24 PM   #11
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On our 2014 DSDP we have experienced the same heat issue. Our subwoofer is located under the sink mounted to the outer wall. We thought that was the source of the heat. It was not excessive. I guess the next time I am traveling I will use our temperature gun to see if I can determine the source.
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