Work through Power Defender 165, 225, 270, and 350 startup symptoms and displayed E0–E34 faults using checks supported by the installation and operation manual.
Select the symptom or fault group shown on the integrated display.
| Fault group | Manual meaning | Expected response |
|---|---|---|
| E0, E7, E9, E16 | Overcurrent, excess load, or a stalled shaft | Remove the cause of overload or binding before another restart attempt. |
| E1, E2 | Input voltage outside the permitted range | The motor stops and can restart automatically when voltage returns to specification. |
| E4, E17 | Power-module or control over-temperature | The motor reduces output or stops until temperature returns to an acceptable level. |
| E5, E18 | Open output phase or internal hardware failure | Persistent faults require qualified service; internal parts are not user-serviceable. |
| E11, E26, E27, E33, E34 | DI, Modbus, UI, or remote communication loss | Identify the exact code and verify only the corresponding manual connection path. |
| E25, E29–E32 | Settings reset or corrupt memory profile | Re-enter settings after E25; use the manual power-cycle procedure for persistent profile faults. |
The manual requires qualified personnel for installation, operation, and maintenance. Before electrical connections or maintenance, disconnect power at the breaker, prevent it from being restored, let the motor stop, and wait four minutes for residual capacitor voltage to discharge. The motor and control contain no user-serviceable internal parts.
This tool applies to the Waterway Power Defender 165–350 variable-speed pool pump motor manual. It preserves the different voltage requirements for the dual-voltage 165 and the 230-volt 225, 270, and 350 models. It does not diagnose the attached wet end beyond the pump and shaft checks stated in the motor manual.
Keep model details, service notes, repairs, and customer history together.
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