Speck Pumpen Communication / Control Input Failure

Pump does not respond to external control signals (e.g., from pool automation system).

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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.

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Possible Causes

Incorrect wiring to Speck control input terminals, Disabled external control mode in settings, Faulty relay or dry contact in automation system, Damaged low-voltage control cable

How to Fix / Troubleshooting

Safety first: Isolate power before modifying control wiring.

Verification steps:

  • Check the Speck controller manual for correct terminals for external start/stop or speed control.
  • Confirm that the controller is configured to accept external commands (not locked in manual mode).
  • Test the automation relay or contact with a multimeter to ensure it closes when commanded.
  • Inspect the low-voltage cable for damage and correct polarity where applicable.

If wiring and automation outputs are correct, the controller’s input circuit may be defective and require replacement.

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Repair Difficulty

Medium 3/5

Required Part

Speck Pumpen controller input terminal board
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