Caretaker 99 distributor valve not working

Jun 8, 2015
1
Phoenix, AZ
I have a Caretaker 99 8-port system with 26 pop-up heads. About 1/3 of the heads are newly replaced and the remainder are in working condition. Pressure at the filter runs at 30 psi on a clean filter. Pressure at the Caretaker distributor runs about 15 psi when it is working properly.

The problem is that the distributor valve is not cycling the way it should. I don't know whether the issue is mechanical with the motor and / or gearing, or if it is in the control circuitry. Can you suggest a troubleshooting sequence that will help me diagnose the problem and maybe avoid having to call a repair service?

I am a new member on the site. I had this pool built in 2003 and have done the routine maintenance and pool care myself since construction.

Thank you.
 
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