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12-03-2017, 04:20 PM
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#15
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Senior Member
Join Date: Dec 2015
Posts: 204
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Quote:
Originally Posted by vito.a
Okay. Is your aux compressor also up front?
I would have thought the Dynasty, Executive, Signature, Navigator, Patriot, and Marquis would be similar.
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Yes,
On my 2004 Monaco Dynasty Regal 42', it is in front, dead center, between the driver's and passenger seats... just forward of the basement bulkhead. It's mounted on "L" brackets hanging from a frame member.
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12-04-2017, 04:15 PM
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#16
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Senior Member
Monaco Owners Club
Join Date: Oct 2009
Location: Tucson, AZ
Posts: 6,544
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I ordered a new Nason pressure switch and a new White Rodgers solenoid.
The Nason pressure switch is mounted with the 12v aux air compressor assembly, but I cannot locate the White Rodgers solenoid.
Does anyone know where the White Rodgers solenoid is located on a 2004 Signature?
__________________
97 Monaco Windsor- Sold
07 Monaco Executive McKinley- Sold
04 Monaco Signature Chateau IV
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12-04-2017, 05:20 PM
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#17
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Senior Member
Join Date: Dec 2015
Posts: 204
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Vito, mine is bolted to the same base plate assembly as the air compressor. It uses a 12 vdc signal voltage to switch 12 vdc line voltage for starting and running the compressor. There should also be a Parker moisture separator that purges a little air during each cycle. Of all the components, the Parker moisture separator (with glass bowl) is larger than the White-Rodgers solenoid... which is larger than the Nason pressure switch.
Along with the compressor, all of these components are mounted to a base plate. It's possible that HWH or Monaco chose to use a solid state switch somewhere else in the system to serve the same purpose as the White Rodgers.
I'm pretty confident that I had taken pictures of my (two different) auxiliary compressor assemblies. As soon as I find it I will post it on this thread.
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12-04-2017, 05:58 PM
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#18
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Senior Member
Monaco Owners Club
Join Date: Nov 2015
Posts: 2,281
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The pressure switch is easy to test by making a setup to add compressed air from another compressor and put an OHM meter across the terminals. The circuit should be closed below approx 85 psi and it should open around 110-115 psi. The solenoid can be tested by putting 12 volts across the small terminals. When this is done there should be continuity across the large terminals. These tests will tell you if either is bad. I found that corrosion on the mount to make it so I was not getting a good ground. Make sure everything is clean and bare metal where the base contacts the L brackets
Good luck!
__________________
Steven & Laurie
2006 Moncaco Executive Ranier
Detrioit Series 60 (515HP), Allison 4000 series
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12-05-2017, 10:14 AM
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#19
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Senior Member
Monaco Owners Club
Join Date: Oct 2009
Location: Tucson, AZ
Posts: 6,544
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Quote:
Originally Posted by Flyin4Fun
There is a 2 pin connector about 18in from the compressor.
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Sorry, I was confused. I understood the White Rodgers solenoid was 18" from the compressor, but you meant the electrical connector was 18" away? I was looking all over the place under there.
Mine has a single pin quick disconnect electrical connector from the compressor and a ground wire held on by a 14mm nut. Thinking back, that 14mm nut may have been on the White Rodgers solenoid.
Thanks
__________________
97 Monaco Windsor- Sold
07 Monaco Executive McKinley- Sold
04 Monaco Signature Chateau IV
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06-22-2018, 11:19 AM
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#20
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Senior Member
Monaco Owners Club
Join Date: Oct 2009
Location: Tucson, AZ
Posts: 6,544
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I'm still trying to get my Thomas 12V Aux compressor to work.
I removed the entire pump asembly yesterday and installed a new White Rogers relay and a new Nason pressure switch. I found a blown 15a inline fuse on the wire to the White Rogers relay and replaced it. I also found a broken wire from the Nason pressure switch to ground.
It's still not working!
I need to better understand the system so I can troubleshoot it.
Should there always be +12v to one side of the White Rogers Relay (this is the wire with the inline 15a fuse), or is the HWH system only applying power when required?
Does the HWH system then apply +12 to the Nason switch when required (this it the wire with a quick disconnect on it), or should there be constant power here?
Also, this pump was new last December and it's already dirty!
Thanks for the help.
__________________
97 Monaco Windsor- Sold
07 Monaco Executive McKinley- Sold
04 Monaco Signature Chateau IV
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06-22-2018, 12:08 PM
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#21
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Senior Member
Monaco Owners Club
Join Date: Nov 2015
Posts: 2,281
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You should always have 12v at the large lug of the relay. (The lug next to your red wire in pic). HWH will supply another 12v when needed to fire the relay. If you ground the frame and supply 12v positive to but wires on the plug it should run
__________________
Steven & Laurie
2006 Moncaco Executive Ranier
Detrioit Series 60 (515HP), Allison 4000 series
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06-22-2018, 12:31 PM
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#22
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Senior Member
Monaco Owners Club Holiday Rambler Owners Club
Join Date: Nov 2016
Location: SE Wisconsin
Posts: 339
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As Chargerman said you need 12v on BOTH sides of the pigtail plug and then ground the mounting frame
__________________
2020 Cyclone 4005 Toyhauler 5th wheel 2005 HR Navigator 45 PBQ - SOLD
2005 HR Imperial 42 PBQ - SOLD
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06-22-2018, 12:39 PM
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#23
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Senior Member
Monaco Owners Club
Join Date: Nov 2015
Posts: 2,281
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Looking back at your post from 12/7 I see you mentioned that you only has a single pin connector. Something is not right with that. Is it a single pin plug on the coach side also?
__________________
Steven & Laurie
2006 Moncaco Executive Ranier
Detrioit Series 60 (515HP), Allison 4000 series
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06-22-2018, 01:39 PM
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#24
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Senior Member
Monaco Owners Club
Join Date: Aug 2017
Location: Orlando, Florida
Posts: 5,819
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Maybe this diagram will help. You can see the electrical wiring and there is a description of the circuit operation. Note that you have continuous 12V+ battery power to one wire in the (two wire) connector and the other wire is 12V+ when the HWH system is active.
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06-22-2018, 04:36 PM
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#25
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Senior Member
Monaco Owners Club
Join Date: Oct 2009
Location: Tucson, AZ
Posts: 6,544
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Mike, thanks for the diagram.
Steven, unlike the diagram with a double wire quick disconnect, mine has two separate wires running to the assembly. One with a 15a inline fuse and ring terminal connects to one side of the relay.
The other wire with a quick disconnect goes to the Nason pressure switch.
It appears they all ground to one of the relay attachment studs.
If I understand correctly, I should be able to put a volt meter on the wire to the relay and get +12v. This should always have +12v.
IF the HWH is calling for air, the small quick disconnect wire to the Nason pressure switch should also have +12v.
I suspect my old pump was frozen and burned out the 15a inline fuse. I've replaced it but I'm sure there are more fuses somewhere.
__________________
97 Monaco Windsor- Sold
07 Monaco Executive McKinley- Sold
04 Monaco Signature Chateau IV
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06-22-2018, 05:04 PM
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#26
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Senior Member
Monaco Owners Club Holiday Rambler Owners Club
Join Date: Nov 2016
Location: SE Wisconsin
Posts: 339
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When I put my Viair pump in I kept blowing the fuse in the front bay.
I ended up putting in a solenoid
__________________
2020 Cyclone 4005 Toyhauler 5th wheel 2005 HR Navigator 45 PBQ - SOLD
2005 HR Imperial 42 PBQ - SOLD
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06-22-2018, 06:07 PM
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#27
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Senior Member
Monaco Owners Club
Join Date: Nov 2015
Posts: 2,281
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Try putting 12 volts to both wires and grounding to the frame to see if it runs. It is does the drain valve at the bottom of the clear bowl should close at the same time. Then remove the one wire that runs the the pressure valve. Pump should stop and blow off valve should open to release any moisture in the bowl. Try this and let us know how you make out.
__________________
Steven & Laurie
2006 Moncaco Executive Ranier
Detrioit Series 60 (515HP), Allison 4000 series
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06-28-2018, 06:40 PM
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#28
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Senior Member
Monaco Owners Club
Join Date: Nov 2015
Posts: 2,281
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Hey there vito. Have you had a chance to put power to your compressor?
__________________
Steven & Laurie
2006 Moncaco Executive Ranier
Detrioit Series 60 (515HP), Allison 4000 series
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