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Topic: Roof Air HELP NEEDED (Read 1251 times) previous topic - next topic

Roof Air HELP NEEDED

Our roof top air has started kicking the power off in our 1999 U270.  We suspected that the roof air units were needing maintenance (we think they are original - Penguin Duo Therm 620315 - 651816C851CO).  In trying to troubleshoot we found that the compressor is not kicking on - then we found the inside temp reading (when the CCC2 is turned on) is reading 32 degrees F.  I need to know a couple of things....
1.  I've reset the CCC2 multiple times, but did not correct the inside temp reading.  Any suggestions on how to fix that?
2.  I cannot find the model AC unit available to replace our roof top air (if we end up having to do that).  The closest I've found is the Penguin II - but am not sure if it fits electrically and mechanically as a perfect replacement.  Will the wiring match up?

UPDATE**The thermostat is reading right now, and the air came on as it should when on auto.  Still interested in knowing advice for replacement roof air units - as the back unit is toast.  Thanks in advance for any advice.

Any advice and suggestions are welcome.  We are in a pinch trying to take a trip this weekend, and running out of time.
Thank you!

Re: Roof Air HELP NEEDED

Reply #1 –
Do a search as there are many articles on this subject.  Just be prepared that if you put in another Penguin unit you might not be happy.  They are way louder than the older units and not as efficient.  I replaced mine with a Atwood Air Command unit.  The hole in the roof is standard at 14" I believe.  Wiring is same and no thermostat as it's in the unit which has a remote control.  Nice unit.

Atwood Air Command 15000 BTU Non-Ducted Air Conditioner HeatPump 15026

Keith
Keith, Joyce & Smokey the Australian Cattle Dog
1995 U320 SE Extreme 40' WTBI Build # 4780, with a Honda CR-V hopefully still following behind.
Motorcade # 17030
FMCA # F422159

Re: Roof Air HELP NEEDED

Reply #2 –
I replaced with the same Atwood 15000 unit and will replace the other unit this summer with the same.
Very happy with the cold performance and heat strip.
If yours are original they probably have seen the best of there years of service.
1995 U320C SE 40'
Jeep 4x4 Commander - Limited - Hemi
"The Pack"  Yogi and Diesel our Airedales -  Charlie our Boxer/Akita mix. Gone but NEVER forgotten Jake our yellow Lab.
NRA Law Enforcement Firearms instructor - Handgun/shotgun
Regional Firearms instructor for national Armored Transp. Co.

Re: Roof Air HELP NEEDED

Reply #3 –
Not knocking you but what is ccc2? Answered myself,comfort control thermostat.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: Roof Air HELP NEEDED

Reply #4 –
Not sure if this helps, but PO replaced original ac's on my coach with Penguin 2 units and the ccc2 thermostat.
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.

Re: Roof Air HELP NEEDED

Reply #5 –
Your units have either been updated to the ccc2 control or they have been replaced, make sure the fans are set to high speed to keep the units from freezing up.
 If you don't have the manual for the ccc2 you can find it on line with Google.
The selected media item is not currently available.Bill&Doris 97 U270 36'
University of Parris Island Class of 66
Semper Fi  Build# 5174 MC#17094

Re: Roof Air HELP NEEDED

Reply #6 –
Quote from: Bill Willett –
Your units have either been updated to the ccc2 control or they have been replaced, make sure the fans are set to high speed to keep the units from freezing up.
 If you don't have the manual for the ccc2 you can find it on line with Google.
    https://www.campingworld.com/images/includes/productSpecs/3312024%20Operating%20Instructions.pdf Think that could indicate a problem, run mine on low all the time.
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.

Re: Roof Air HELP NEEDED

Reply #7 –
Quote from: John44 –
Not knocking you but what is ccc2?
Dometic's "Comfort Control Center II.  Just the thermostat
Ed and Michele
2000 U295  36'  (Build #5600)
8.3 ISC 350HP.
2012 Jeep Grand Cherokee (Toad)
2001 Lance Truck Camper (Sold)
2001 Lazy Daze (Class C). RK Floor Plan (Sold)

Re: Roof Air HELP NEEDED

Reply #8 –
On a side note , my AC takes 2 minutes at least to turn on. Not sure what kind they are, or the thermastat... but waiting for that cool air when its 110 inside the coach... is .... hot.
That normal?
'99 U320 40 WTFE
Build #5462,
1500 Watts Solar 600 amp Victron lithium
2012 Jeep Grand Cherokee Overland Hemi
Instagram bobfnbw
Retired

Re: Roof Air HELP NEEDED

Reply #9 –
Quote from: bobfnbw –
On a side note , my AC takes 2 minutes at least to turn on. Not sure what kind they are, or the thermastat... but waiting for that cool air when its 110 inside the coach... is .... hot.
We've had Coleman, Dometic and now Carrier. They've all turned on, NOW. Ours have no fancy devices, so worth checking out.
As far as the inside temp: if you let the coach get THAT warm before hitting the air, it will take a long while! We have a wireless weather station: when the outside temp hits 95, on goes the stern AC. It takes two hours, on full, to get the coach to where it's liveable, that is, twenty degrees difference between inside and out. Foretravels are well insulated, but twenty/difference is about it.
We've never needed (even in 114 temps) to use the front. Case-in-point: It's 104 outside right now, 80 inside after two hours of running.  ^.^d
1993 U-240 "La Villa Grande"..CAT 3116 w/ Pacbrake PRXB...Allison 3060 6-speed..
Previous: 1983 Airstream 310 turbo diesel, 1979 Airstream 280 turbo diesel
                                      Build # 4297
                                      PNW natives
                      Home base:  'Cactus Hug' (Ajo, Arizona)
                        DW Judy & Chet the wonder dog
                        Full-Timers 'Sailing the asphalt sea'

Re: Roof Air HELP NEEDED

Reply #10 –
Delay really depends on the thermostat.  Yes, there are some that do have a delay (to allow capacitors to charge after getting source of 120 VAC).

And of course there is a delay (separate delay) in the ATS when on generator.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Roof Air HELP NEEDED

Reply #11 –
On automatic fan on the Dometic there is a 2 minute delay, but if you put the fan on high or low the fan will come on right away and in 2 minutes the compressor will start.
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: Roof Air HELP NEEDED

Reply #12 –
Maybe will have to change out the thermostat. Right now the coach is not plugged into shore power. I will have to install one. Its totally off solar. I can run the front air conditioner off the lithium batteries with good solar and get 4 hours or more before I have to shut it down or switch to generator. I plan on putting in a 50 amp service soon. My wife just bought a plug in electric car, a Honday Prestige I think its called, and we will share that. With the Victron multiplus, I can limit the amount of current I draw from shore power to keep the amps down. The front ducted AC will keep it cool with the shades down. The rear ac will only run on shore power or generator.
Bob
'99 U320 40 WTFE
Build #5462,
1500 Watts Solar 600 amp Victron lithium
2012 Jeep Grand Cherokee Overland Hemi
Instagram bobfnbw
Retired