I have a Jandy pool set up and have not been in the house for a few years. I am back now and I tried to use the spa and heat it. When I turn it on, the Pressure Switch blinks red on and off. I remember I used to have a similar problem and would just turn the system off, then back on and it would work. Now, when I do it, the heater does a small click and then nothing.

Any suggestions? Would a plumber fix this or is it a pool guy repair?

Thank you.