Bought a house with a pool that is controlled by a Jandy Aqualink RS and PDA up to now everything has worked goes on and off as programmed, heats as programmed and goes on at the correct freeze tempature. Then the pool was 90 in January, everything looked right but the heater kept coming on and pump on and off times were wrong. New batteries in PDA and while the settings look correct and it connects it isn't following the programming. Also noticed it no longer keeps correct time losing 10 minutes per hour.
Ant ideas please
Ant ideas please