Hello,
I have a hotsprings sovereign from about 2000. It hasn't been used in about 4-5 years, but I cleaned it up, replaced the filters and filled it. Pumps ran fine but I got a flashing green "ready" light. Everything I've read about it suggests replacing the high limit thermister and control thermister. I bought new parts, but when I went to unscrew the old ones water came out. Is this just water from the heater coming out and will only be a small amount? Or do I need to drain the tub to do this procedure? I panicked and quickly screwed the old one back in, just in case! Thanks for any help.