Display shows 'rS' or 'rSt' and pump does not follow programmed schedule.

Safety first: No internal electrical work is needed for basic checks; just avoid opening the control housing while energized.

• Reprogram time and schedule: Use the keypad to set the correct time and re-enter filtration schedules according to the AstralPool manual.
• Check for frequent power loss: If the clock resets often, have an electrician check the supply for nuisance trips or voltage drops.
• Factory reset: If schedules behave erratically, perform a factory reset from the menu and reconfigure.

If the clock cannot hold time despite stable power, the control PCB may need replacement.