Q: The GARDENA 6300 SilentComfort pump does not start

First of all, the GARDENA 6300 SilentComfort pump must be primed correctly or it will not start. Here are the essential checks: 1. Initial priming (very important) Fill the pump body with a minimum of 2 liters of water through the filling opening. This water primes the internal system and is mandatory for the pump to operate. 2. Connections and piping Check that the suction hose is properly connected with a vacuum-resistant (sealed) hose. Inspect all connections for cracks, holes, or loose fittings - even a small air leak prevents priming. Tighten all fittings by hand (without tools). 3. Water source and suction Ensure that there is water available to be sucked (the filter must not be dry). The pump can suck up to a maximum height of 8 meters . 4. Power supply Check that the cable is properly plugged into a functional outlet. Test the outlet with another device. The pump requires a residual current device (RCD) of 30 mA maximum . If after these checks the pump still does not start, there is probably an internal fault (motor or thermal safety system activated). In this case, contact GARDENA support.

Question 1

Why does the GARDENA 6300 SilentComfort pump not pump water?

Accepted Answer

If your GARDENA 6300 SilentComfort pump starts but does not pump water, here are the checks to perform in order:

Insufficient priming

This is the most common cause. The pump must contain at least 2 liters of water to operate. Pour water through the filling opening and wait up to 5 minutes for the priming to occur. Without this prior priming, it cannot draw.

Problems with the suction hose

Check the sealing of the suction hose - any leak or crack prevents it from drawing
Ensure that all connections are tight (hand-tightening is sufficient)
Check that the hose is not twisted or bent, which blocks the suction

Exceeded suction height

The GARDENA 6300 SilentComfort pump can only draw water up to a maximum height of 8 meters. If your water source is deeper or too far away vertically, the pump will not be able to reach it.

Clogged filter

Clean the suction filter and the non-return valve. A dirty filter limits or completely blocks the suction.

Absence of water source

Check that there is indeed water available on the suction side (well, basin, etc.). If the suction hose is out of the water, the pump cannot draw anything.

Question 2

The GARDENA 6300 SilentComfort pump does not start

Accepted Answer

First of all, the GARDENA 6300 SilentComfort pump must be primed correctly or it will not start. Here are the essential checks:

1. Initial priming (very important)

Fill the pump body with a minimum of 2 liters of water through the filling opening.
This water primes the internal system and is mandatory for the pump to operate.

2. Connections and piping

Check that the suction hose is properly connected with a vacuum-resistant (sealed) hose.
Inspect all connections for cracks, holes, or loose fittings - even a small air leak prevents priming.
Tighten all fittings by hand (without tools).

3. Water source and suction

Ensure that there is water available to be sucked (the filter must not be dry).
The pump can suck up to a maximum height of 8 meters.

4. Power supply

Check that the cable is properly plugged into a functional outlet.
Test the outlet with another device.
The pump requires a residual current device (RCD) of 30 mA maximum.

If after these checks the pump still does not start, there is probably an internal fault (motor or thermal safety system activated). In this case, contact GARDENA support.

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