Plumbing – How to remove big PVC coupler in hot tub

This is what worked for me (it's rather brute force, but functional):

• Take a small C-clamp (I had a 3" one laying around) and place it in the mouth of the spigot on the right hand side with the body of the clamp facing down.

• Tighten the clamp

• Twist the clamp counter clockwise using the body of the clamp as a gripping surface and leverage

• If it doesn't work try tapping the spigot with a hammer or mallet to jar it loose a bit then try the clamp again.

Note: this may damage the spigot a bit, it was useful to me as the spigot was already broken and all I had available was a hammer and a clamp.

Not sure if this helps but I ran in to something similar. If your tub gets too hot, it might go past its heat limit and stop heating all together. There should be a high limit reset switch that you'll need to hit to get it heating again. Just adjust the temperature setting so it doesn't hit the limit. Mine was showing that it was heating on the top panel, but wouldn't start heating until I reset the limit switch. I had prior work done to it and the tech cranked the heat all the way up to test something and I overlooked it once we got it going again.