AO
Raypak
Motor Overcurrent Protection Trip
Raypak variable‑speed pump display shows AO or ALARM OVERCURRENT; pump stops or will not start.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Impeller blockage or debris, Seized motor bearings, Incorrect voltage supply, Internal drive electronics fault
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker and verify zero voltage at the pump terminals before working on the pump.
- Check for obstructions: Remove the pump lid and basket. Inspect the impeller area for debris (stones, leaves, zip ties). Use a screwdriver to gently turn the impeller; it should rotate smoothly.
- Verify supply voltage: Using a multimeter, confirm that the line voltage matches the Raypak pump nameplate (e.g., 230V). Incorrect wiring can cause overcurrent.
- Inspect motor end: Spin the motor shaft by hand (from the rear if accessible). If it is stiff or grinding, the bearings may be failing and the motor should be replaced.
- Reset the drive: Restore power and clear the alarm per the Raypak pump manual. If AO returns immediately with a free‑spinning impeller and correct voltage, the internal drive module may be defective and require replacement.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Pump Motor and Drive Assembly
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements