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vito.a

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Posts posted by vito.a

    Warning light

    in AC, Heating, and Cooling

    Posted · Edited by vito.a

    First, what warning light are you getting?  

    Here is a link to Cummins lamp ID guide:

    https://www.cummins.com/sites/default/files/files/brochures/Cummins Driver Lamp Identification Card 4971518.pdf

    Next, you will not get a light that means the oil needs changing.  Most check engine lights are related to sensors on the engine.  

    When were the fuel filters changed?  Many of the issues with these large diesel engines are related to the fuel filters.  

    Where did you take the coach for service?  Do they have a certified Cummins technician with the proper diagnostic equipment?

    Do you have a complete list of the codes?

    Aqua Hot heat registers will not stay on

    in AC, Heating, and Cooling

    Posted · Edited by vito.a

    You will hear the diesel burner inside the coach when it's running.  If you are on electric only, you will get a small amount of hot water and a limited amount of coach interior heating.

    You should turn on the Aqua Hot diesel switch inside the coach (probably in the kitchen) and hear the diesel burner light. First you will hear the pump spin up, then after about 20 seconds you will hear the burner light. It will sound like a small jet engine and the Aqua Hot exhaust pipe will blow out very hot exhaust. Hopefully it has been serviced. If not it can smoke badly.
    The diesel burner will run for about 20 min and then first the burner will shut down and it will go into the cool down cycle for 1-2 min and finally shutdown and all will be quiet until the system demands more heat.

    Aqua Hot heat registers will not stay on

    in AC, Heating, and Cooling

    Posted · Edited by vito.a

    Reset the Dometic Comfort Control thermostat by sliding the black switch on the bottom to off.  Then while holding both the top and bottom buttons down, slide the switch on.  You will see FF in the display.  

    From your description it's difficult to tell what's wrong.  First, when you turn on the Aqua Hot diesel switch do you hear the diesel burner light and run for about 20 min? 

    Also, to heat the entire coach in cold weather will require the diesel burner.  The electric Aqua Hot is only for small heating situations or a small amount of hot water.  

    The heat pumps work well down to about 40 degrees.  Below that they loose efficiency and the coils begin to freeze up.  

     

    Hot Water Heater While Driving

    in Appliances

    Posted · Edited by vito.a

    Your Aqua Hot can heat water as well as the inside of the coach using heat from the engine while traveling.  

    Look at page 128 of your owners manual.

    Engine Heat Exchange System:
    When traveling, the water pump on the engine circulates heated engine coolant
    through the Aqua-Hot. Through convection, heat transfers to the Aqua-Hot
    coolant, providing hot water and interior heating. Use the Comfort Control to
    operate the heat exchangers.
    To Heat the Interior While Traveling:
    • Turn on the interior house power.
    • Set the Comfort Controls to Furnace.
    • Select the desired Zone and Temperature.

    Experienced Repair Shop near San Diego?

    in General Motorhome Discussion

    Posted · Edited by vito.a

    HWH uses the Thomas 405ADC 12v air compressor.  It's the same one used in dental offices, so its very quiet. 

    You can purchase a new pump for $374.99.

    NEW THOMAS 405ADC38/12 Piston Air Compressor,1/10HP,12VDC 100PSI FREE S&H! 94700357458 | eBay 

    Or you can purchase a rebuild kit for $270. 

    NEW OEM THOMAS 405ADC38/12 Rebuild /Service KIT Piston Air Compressor SK405DCMAJ | eBay

    If you air the coach up as high as it will go and place jack stands under the rear crossmember for safety, you can remove the old pump in a few min.  

    Replacing HWH auxiliary air pump:  http://www.irv2.com/forums/f115/replacing-hwh-auxilary-air-pump-369684.html

    You're going to have a hard time finding someone that will reliably work on the air suspension system.  I would avoid most RV repair places and focus on a large truck/bus repair center.  Give Paul Maddox (AZPete) a call and ask who he recommends.  He works for HWH and can answer your questions. His email is pfmaddox@att.net<mailto:pfmaddox@att.net> and his phone number is 602-549-3638. He has posted that his phone is always on, and if not answered, leave a message.

    Fixing Air system

    A large percentage of the time (maybe 90%+) the leaks are in the air solenoid valves, or "6 packs".  They need new o-rings installed both inside the solenoid and also where the air lines insert into the solenoid.  

    You need to get the coach up in the air because after you locate the leaks you need to bleed the air down to work on the solenoids.   If you do not have a lift, build some ramps from 2" X 12" boards stair stepped together. 

     Someone also posted a link to a leak detector spray product on Amazon that is superior at finding leaks.

    https://www.amazon.com/dp/B001B00LOS/?coliid=IU9P1ZNDSADZ4&colid=32KSGI9ODYMBD&psc=0&ref_=lv_ov_lig_dp_it

    This process takes lots of time and patience and very few shops have either.  HWH will work on your system if you are near Iowa or Paul Maddox. 

    A good way to start would be to search the IRV2 Monaco and Roadmaster sections and pre-purchase the o-rings needed.  Mike Canter suggests you use Dupont Viton orings.  The internal oring is a -019 size, the large one on the bottom is a -028 and the small one on the bottom is a -015.

    Then remove the 6-pack valves in both front and rear and rebuild them.  Label all wires and air lines.  It will help to have a special "pin wrench" tool and cannon plug pliers to get the valves apart. 

     Here are some links to get you started:

    http://www.irv2.com/forums/f115/air-leak-in-chassis-leveling-system-160935.html

    You Tube video:

     

     

    http://beamalarm.com/Documents/hwh/hwh-solenoid-valve-disassemble.html

    Hope this helps.

     

    HH zone one issues

    in AC, Heating, and Cooling

    Posted

    Brett, I assume by HH you mean the Aqua-Hot heating system? 

    Are you running it on diesel, or pure electric? Also, do you have the front thermostat zone mode set to Furnace?

    I have not seen doors or covers on the Aqua-Hot vents that require vacuum.  They should blow hot air regardless of the settings on engine/dash heating system.  

    I would check the blower fan and also the recirculation pump for that zone.  Many times they will stick.  You can usually tap on the recirculation pump and get it to start pumping.  You will need to remove the stainless cover over the Aqua-Hot burner assembly to access the pumps.  While you are in there check for 12v power to the pump also.  

    Ride height control valve

    in Chassis, Handling, Tires & Brakes

    Posted

    All of these air ride coaches (and trucks) have air leaks.  Over the years the air leaks get worse as dirt and corrosion takes its toll.  Your air ride height valves may or may not be bad, but you cannot tell unless the air system is fully pressurized and the coach is in the travel mode.  Leaning after sitting for a week is actually pretty good. 

    It takes lots of hours of dedicated work to make a coach completely leak free.  It's like searching for the Holly Grail.  I doubt you will find a shop that will go to this extent or expense to repair your air ride system.  If it pumps up fairly fast and stays pumped up at least overnight you are doing great.  

    Enjoy your coach.

    Switching settings in Heliotrope?

    in Batteries

    Posted

    I've added three 225w solar panels so our Heliotrope charge controller was boiling the water out of the batteries.  I tried to change the jumper pins from EQ to Float but just couldn't find the pins while the charge controller was attached to the basement ceiling.  I unscrewed the charge controller from the ceiling and let it hang from the wiring so I could get a good look at it.  I then found the pins and relocated the jumper.    

    Koni Shocks

    in Chassis, Handling, Tires & Brakes

    Posted

    I replaced the rear shocks on our coach with Bilstein Comfort Drive shocks from Amazon.  They were $80.20 each and take about 10-20 min per shock to change.  They are part number 24-187321.  Our coach also uses the same Bilstein shock part number all around.  Bilstein provides a small package with a steel bushing kit for the different applications.  

    Koni uses two different part numbers: 8805 1004 front, and 8805 1005 for the rear for our S series chassis.  Koni shocks are double the price of Bilstein but some owners are saying they work well on the front.  

    • Thanks 1

    Aqua-Hot heating on electric question!

    in Engine, Transmission, Engine Cooling, & Hydraulics

    Posted · Edited by vito.a

    Beautiful coach and trailer!

    The early Aqua Hot systems only have a single element electric heater.   It is 1650 watts and produces about 5000 btu of heat.  If the incoming water is fairly warm, it works well for a short duration of hot water.  However, if the incoming water is very cold, it is not sufficient.  It will not heat the interior of the coach when the temperature is low.  

    The diesel burner is 50,000 btu.  It will produce sufficient heat for heating the inside of the coach, the basement, and even pre-heat the engine.  It will also produce hot water regardless of the incoming water temperature.  

    The newer Aqua Hot systems have dual electric heating elements and will function much better on electric only.  However, if you are paying for electric the diesel burner is more efficient.  

    GE air conditioners

    in AC, Heating, and Cooling

    Posted

    Thanks for sharing.  That's a great price for a 15k heap pump unit. 

    All RV air conditioners use the same 14 x 14" opening that a roof vent uses.  The price on the thermostat looks good also.  As long as it uses the same RJ11 phone cord. 

    A potential issue is the thermostat can only handle 1 zone.   

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