Alarm 40 or 75 — Supply voltage too low

What does 40, 75 mean?

The electrical supply voltage to the pump is below the specified operating range, which can prevent the pump from functioning correctly. The pump may automatically reset and restart once the fault is cleared.

• Insufficient power supply to the pump.
• Voltage drop in the electrical wiring.
• Fluctuations in the main power grid.

Click steps to track your progress.

1. 1

   Check that the main power supply to the pump is within the voltage range specified for the pump model.

2. 2

   Consult a qualified electrician to measure the supply voltage at the pump's connection point.

3. 3

   Address any external electrical issues that are causing the low voltage.