Troubleshooting - Pump - Pentair MBSP-3 Owner's Manual

Troubleshooting

TROUBLESHOOTING - PUMP

Pump won't run:
Motor hums but pump won't run:
Pump runs but pumps very little or no water:
Pump cycles too frequently:
Check all the wiring connections.
Check for a low or defective battery.
Check that the automatic switch is free to move up and down.
Press the circuit breaker reset button on the control panel.
Check for low or defective battery.
Make sure a check valve is installed and functioning between the
primary pump discharge and the Battery Backup wye.
Check for an obstruction in the discharge pipe.
The discharge pipe length and/or height exceeds the capacity of the
pump.
Check for a low or defective battery.
The Positive (+) and negative (–) pump wires are reversed.
Disconnect them and reconnect correctly.
The check valve located between the discharge of the primary
pump and the Battery Backup wye is not installed or is not working
properly. Install an auxiliary check valve or replace the existing
check valve as required.
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