As a follow up so far (if anyone is interested or following), I took the coach to Cummins service center in Fort Worth TX and they were hesitant to even look at it saying that they don't really cover amenities like the cooling fan - only the engine. I was advised to take it to Industrial Power as they work on all aspects of motorhomes including FL and Spartan.
So I dropped it off at Industrial Power with a description of what's going on.
Get a call from them today saying that the solenoid valve on the motor is bad, it would have to be ordered from Spartan and how soon do I need it to determine the price of shipping. I informed the guy that there's absolutely nothing wrong with the solenoid valve as it's new and I just checked to verify that it's working properly.
Then I get the old "well it must be an intermittent problem" scenario.
I'm not sure if they were just trying to sell me something I didn't need or the tech just decided to start throwing parts at it at my expense without a detailed diagnosis.
I informed the caller that I'd be right down there.
After a long discussion with the shop foreman telling him that I know the ECM is in default and not sending a voltage signal to the solenoid, he apologized and assured me they'd get things fixed. I also told him that I've spoken with Scott at Source Engineering and was told the ECM needs to be set at "Variable" and "Option S" and there is a PDF on the dash showing the tree if he'd like to look at it.
I can only think if I hadn't done my homework or if it had been some other unlucky sucker, I/he would be paying at least $400 for something not even needed only for them to say that wasn't the only problem.
We'll see where it goes from here.
2005 Newmar Dutch Star 4024
Pulling my 2012 Malibu w/Blue OX & Patriot brake unit