I have a Jandy 2.0HP VS FloPro Variable-Speed Pump With JEP-R Controller that was installed brand new when the pool was opened this spring. The pool was built 3 yrs ago and we replaced the single speed jandy pump for energy efficiency. The problem I am having is the gfci breaker at the sub panel trips (breaker controls pump and aquapure generator only). I have never had this problem before. I read the owners manual and accessed the setup mode/faults and it read: DC UNDERVOLT. There is no specific time frame when this occurs.