DAB
Speed Limitation / Derating
Pump cannot reach higher speeds or flow rates on a variable‑speed DAB model, even when commanded
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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
Installer‑set maximum speed limit, Thermal derating due to high temperature, Undervoltage supply limiting inverter output, Internal inverter fault
How to Fix / Troubleshooting
Safety first: Only adjust installer settings if you understand their impact on the system.
Steps to check:
- Review settings: Enter the installer menu and verify maximum speed and power limits are set appropriately.
- Check ambient conditions: Ensure the pump is not overheating or installed in a confined, hot space.
- Verify supply voltage: Have an electrician confirm that the supply voltage is within the DAB pump's specified range under load.
- If limitations persist: The inverter may be derating due to internal faults; have the DAB control module tested and replaced if needed.
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Repair Difficulty
Medium
3/5
Required Part
DAB inverter/control module
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