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Old 10-17-2015, 07:59 PM   #1
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Location: Northern Virginia
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No heat from dash

Just bought a Phaeton and there is no heat coming from the dash, I also noticed the engine temp is low. Any Ideas on the cause?

John and Maureen

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Old 10-17-2015, 08:08 PM   #2
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Join Date: Apr 2011
Location: Powell River, B.C.
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Engine coolant thermostat ( s) , if the engine isn't at full operating temp, after the coolant runs 40' up to the dash board your not going to get anything that resembles warmth.

99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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Old 10-18-2015, 05:59 PM   #3
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Location: Alamogordo, NM
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Like skip says, themostat....Also a low level of coolant will cause the same symptoms. No coolant to heat..
Good luck.
Ford RV V10 5 star Tow tune
Front/Read Roadmaster 1 3/4" anti-sway bars. Roadmaster steering stabilizer
2009 Acme Tow dolly w/ 2014 Avalon Hybrid Limited
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Old 10-20-2015, 09:10 PM   #4
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No heat from dash

Up in the front of the coach there is a Evans temperature control valve that allows hot water from the engine to flow to allow heat in the dash... Often this valve allows hot water to flow even if you are calling cold air for the a/c, which means your a/c air is not cold. In order to correct this, many people put a ball valve in line to shut off the flow of hot water. This "fix" for improving cold air is documented with pictures in the irv2 tips section. If your prior owner installed this ball valve, you will find it up in the front of the coach above the generator. If it is, indeed there, you only have to open the valve to get the hot water flowing. Just a thought....worth checking out..
Tom and Karen
2014 Newmar Mountain Aire 4369
2014 Jeep Grand Cherokee Ltd.
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Old 10-20-2015, 09:27 PM   #5
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Location: Aberdeen, SD
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Last weekend I took off down the road and discovered no heat in my newmar that I bought during the summer. Then I remembered the previous owner talking about a ball valve under the hood. So I pulled over, found that valve, and BAM -- heat!!
2000 Newmar Dutch Star 38' Class A, Spartan chasis, MM-2242, Cummins 330 pulling a 2014 Ford Focus.
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