Originally Posted by talkingwoman
We have an 2007 Alfa Founder diesel pusher. Have only owned it one year and bought it new from dealer. Question is: Can we use our central air conditioner while running the generator (no electricity available)???
Also, we can't seem to get the dash AC to work while the coach is running. Have looked in the owners manual and nothing there that helps us. Thanks for any help.
TW, I wish I were less qualified to answer your question...
At this moment
, we're boondocking at a dog show in Texas, with temps slated to climb into the nineties as the day progresses. The Onan 7.5 is chugging along, running one AC unit about half the time to keep up with the morning sun.
Are you saying no electrical power is being generated, or noting that the generator is being used in lieu of shore power?
If the former is true, that'd handily explain why the rooftop ACs aren't playing nice: load-shedding prevents them from running down your house batteries' power to the inverter; so, if the generator breaker is tripped, none of your high-current consumption appliances will function. Since your fridge can divert into LP mode, and you might be using gas to heat water, no AC might be the most obvious symptom of a generator that happily runs but doesn't give you electricity.
A way to verify this: the generator should, when producing electricity, show some indication on your electrical panel. If not, chances are, you can go to the generator itself, turn the breaker to the OFF position, flip it back on and your ACs will run normally.
As for the dash AC, I wonder in general how many problems exist out there: DW is trying to sell ours, and dealers always ask if it works. If it runs fine but doesn't cough up some cold air, it might need charged. Otherwise, you might check the fuses. It seems that motorhome woes center on fuses much of the time: knowing where every single one in the coach is will save you money and grief down the road.
Your rooftop ACs can be used underway to keep you cool if you run the generator; but, that'll add to your trip cost signficantly.
According to Cummins, our Onan 7.5 is gobbling somewhere between .2 and .56 gallon per hour (.9 at full load). So, in the summertime when we have to run it 24 hrs, an overnight at $3.80/gal diesel can ring in at a whopping $55 or more. Under those conditions, a $35 hookup can easily become a better (and more restful) alternative to WalMart.
From a guy who routinely sleeps like a baby in a tiny berth at 38,000 feet over the ocean: I have trouble sleeping when the generator and ACs are doing their dance. Very busy, disconcerting. Give me a 50 amp hookup any day.
Best of luck! Let us all know what you discover.