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12-06-2022, 11:01 AM
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#1
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Junior Member
Join Date: Dec 2022
Posts: 3
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Newmar Dash Air
Hope someone can help with this question. I am in a 2017 London Aire (4519) and the air will only come out of the dash, not down below and not up top for defrost. The selector switch does not change anything. Has anyone dove into this before or have any suggestions?
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12-06-2022, 11:29 AM
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#2
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Senior Member
Join Date: Jul 2018
Location: Southeast Texas
Posts: 997
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The controls for the vents use vacuum from a small vacuum pump to drive the actuators position for changing the air flow.
Do you hear the pump running? If so maybe a vacuum line came off an actuator and needs to be put back on.
If not maybe blown fuse or pump is bad.
Heres link to a new pump as example
https://www.amazon.com/Compatible-Ex...s%2C101&sr=8-9
__________________
1998 HR Endeavor Cummins ISB 275 / Banks Allison 3060
20014Jeep Wrangler JKUR with M&G air brake with breakaway
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12-07-2022, 08:06 AM
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#3
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Junior Member
Join Date: Dec 2022
Posts: 3
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Good morning Jon, thank you for the response. I don’t hear a pump so I will start looking around for it
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12-07-2022, 08:11 AM
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#4
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Senior Member
Join Date: Jul 2017
Location: Cypress, Tx.
Posts: 844
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Since you have a fairly new coach I bet yours does not use vacuum but uses electric valves that open and close for the different levels. If an all electric system your problem could be from one of three parts. The control switch, the brain module, or the electric valve. My guess is your problem is going to be the valve. Problem is going to find the valve. Once you do, put a volt meter on it to verify it is getting power. If it has power and valve does not move, you have found the problem.
__________________
2014 Foretravel IH45
Houston (Cypress), TX.
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12-07-2022, 08:24 AM
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#5
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Senior Member
Join Date: Jul 2017
Location: Cypress, Tx.
Posts: 844
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The attached may or not be the type of Dash AC unit you have but this might give you an idea as to what to look for.
__________________
2014 Foretravel IH45
Houston (Cypress), TX.
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12-07-2022, 08:56 AM
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#6
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Member
Jayco Owners Club
Join Date: Apr 2020
Location: roaming
Posts: 60
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We also had that same thing happen, and I just got it fixed...we have 2019 Entegra Insignia 37MB, with a Globus Electronics Ltd dash controller (Brazilian company)... come to find out the controller vent knob plastic post that attaches to a rotor switch on the circuit board broke...not sure how, so instead of dolling
out $850 for a new module, I attempted to super glue the plastic rod to the switch...after several tries, the super glue finally set well, and the knob now turns...although I treat it with "kid gloves" now just in case...
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12-08-2022, 04:03 PM
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#7
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Junior Member
Join Date: Dec 2022
Posts: 3
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Thanks to all of you for the responses. I will post once I figure out what it was so that maybe it will help someone else out down the road......Thanks again
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12-08-2022, 07:18 PM
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#8
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 27,593
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Knowing the brand of dash A/C is important. Early years of Evan Tempcon used vacuum to move the directional doors, newer are all-electric
This is the all-electric version: https://proairllc.com/pub/media/pdfs...ice_Manual.pdf
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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