Freeflow Official

Please call our Freeflow customer service department for a referral to an authorized parts or service dealer in your area. (88809761-7727 ext. 8440

I agree with ScubaDave, it's highly probable your topside control panel is failing and causing the issues you've described. Since you've converted your spa to operate with 230V you should also reconfirm your voltage arriving to the spa at the terminal block to either confirm or rule out any power issues.