I got home yesterday and began filling the spa with water. I had made arrangements for a spa guy to come clean the filter and check out the system. He said to go ahead and fill the spa with water.
After the spa was mostly full, I turned the switches on to get the jet/filter system primed with water. The system started chugging and whirring as usual. After about 5 minutes, the jets bagan to spurt and everything looked good. A bit of debis blew out of the jets, but that is normal for a startup after a long time off.
I looked over toward the pum/heater/filter gear and noticed a bunch of water coming from that direction. Suddenly, the jets sputtered and died away. More water came from the equipment that is usually dry.
Upon inspection, I found that the water was coming from the heater unit. To heat the water, there is a coil of tubing (kinda like a radiator) over large gas burners. Water is pumped through this tubing while the gas flame is on and the water is heated. It's simple really. Well, it looks like the tubing broke and water was pouring down on the gas burners. Big mess.
This put me into a bit of a funk. I was going to do some work on geocaching stories, but instead watched some TV and went to bed early.
Hopefully today will be a better day.