Pressure Switch on Pool Heater

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.

The pressure switch on a pool or spa heater is a pool guy repair -- you might want to look up South Central Pool Supply aka http://www.scppool.com/ and call the nearest distributor. They probably won't make a recommendation, but can tell you who works on your brand of heater.

Thank you very much for the advice. Will follow up!