Paint boondoggle, day 2: my tumultuous relationship with the paint sprayer

I had a hard time falling asleep last night.  My brain was going a mile a minute running through all the things I needed to do today, as well as fretting about the water heater.
This morning I continued masking and doing last minute stuff. So much for having it all ready to go.  My dad came over around 10:30, and we continued doing last minute stuff until noon.  Then I tried to run the paint sprayer.  I connected up all the hoses and set it to run water through to flush out the tubes. I plugged it in, turned it on, and nothing happened. The motor never came on.  I fiddled with it, and my dad fiddled with it, but there was a bad connection or faulty motor. So I took it back and exchanged it.  This required me to go to a Home Depot that was further away, since the one near me didn't have any more in stock.  I then had to wait in line behind a bunch of people returning small stuff like tape or caulk.
About 45 minutes later, I was home again with paint sprayer #2.  The motor worked on this one.  Unfortunately, it still didn't prime properly.  It didn't help matters that  the manual was probably the worst example of technical writing I've ever seen.  My dad and I messed with it for a while, and then finally I gave up and started painting under the eaves while he continued playing with it.  It has an adapter that lets you connect it to a garden hose. Apparently the slight pressure from the water in the hose was enough to unseize the valve, and then it started working.  It was probably 3 PM by the time I actually started spraying paint.  I got three walls of the house painted, and much of that time was spent on the paint sprayer learning curve. The actual painting took very little time.  I was very impressed and relieved that I was able to paint all the way to the top of the front of my house with only the 8-foot ladder rather than the extension ladder.  That was what I worried about more than any other aspect of the painting.
The paint sprayer will spray up to 1 quart per minute. That's a lot of paint.  In some areas I overdid it and laid down a pretty thick coat. I'll be more careful tomorrow. 
It looks pretty nice so far.  I am pleased with the color.  Tomorrow I'd like to finish up the exterior walls.  I think it's manageable provided that the paint sprayer doesn't act up to much...knock on wood!
Oh yeah, the water heater.  It just needed to be rebooted.  Unfortunately it doesn't like being partially covered either, so it turned itself off again after a while.  D'ohh!