Caretaker valve issues

Have a Jandy 5 port caretaker valve in 9k gallon pool. Currently no flow in the pool from the caretaker system or skimmer but pump is primed and flowing through the filter okay. I’m assuming that this is a caretaker valve issue. I’ve tried blowing the skimmer line out then switch the pump back on. Jets flow for 20 odd seconds then loses flow in the pool and skimmer. Any suggestions please?