When the Hydraloop attempts to throw away water out of the T3 tank, it detect no movement in T3. This problem prevents the Hydraloop from self-cleaning properly.
Location of the waste valve #
The valve that empties the tank is located at the bottom of the distribution center. See below photos.
Causes #
Bad venting / other external pipe resistances (slow flow OR no flow)
Problem
Emptying the T3 tank happens through gravity. As the T3 tank is located at the bottom of T3, the ‘speed’ and ‘force’ that the water exists out of the tank is quite low. Therefore smaller resistances in the pipework prevent the water from exiting the tank. Often the cause behind the resistance of this is, is inadequate venting. Other causes could be the pipework causing a water log. Causing resistance in the pipework. On below image you see a setup with a vent installed on the lift pump after the Hydraloop. Air can both flow in and out. You also see a slant downwards in the pipework. This is wrong and causes resistance.
Solution
Adjust pipework to allow proper venting and low resistance for the water to flow.
Lift pump after Hydraloop not working (slow flow OR no flow)
Problem
If after the installation of the Hydraloop a lift pump is used to throw away water to the sewer, this pump can be malfunctioning. When the pump is not able to pump, the Hydraloop is unable to get the water out of the system.
First off, you can confirm if a lift pump is installed after the Hydraloop by going to the HDM. Then on the “Device” tab of the system (scroll a bit down), there is this ‘checkbox’. If filled in correctly during installation, you can see if there is a “Lift pump after (device -> sewer)” installed. See image below
Solution
Inspect the lift pump. Lift pumps often need periodic maintenance/cleaning. It could be that the pump got ‘clogged’. Clean it to solve the problem. Then test it by running the HDM “Maintenance” routine “Empty T1/T2”
Loose wire ‘T3 waste valve’ (no flow)
Problem
This will have the same effect as a broken valve. Often this loose wire is caused by the connector between the component and the wire not being secured well. These wires make contact with each other through metal. And if the metal does not touch each other anymore, no electricity can flow anymore to control the valve.
Inspect the wires. Using a multi meter can be handy to decide if the wires are even connected well if a visual inspection is not enough. Measure resistance between the two ends of the connector over 1 wire and repeat on the other side. Or even better. Measure if the wires receive 24 volt over the wires when running the HDM “Maintenance” routine “Empty T3”. During this routine the valve should be getting powered.
Solution
Try to fix the cabling. Or replace the cabling for new cables.
Then run the HDM “Maintenance” routine “Empty T3”. During this routine the valve should open. And the T3 tank in the HDM graph should lower.
The ‘T3 waste valve’ stopped working OR opening halfway (slow flow OR no flow)
Problem
This failure could be caused by:
- Wear and tear
- Debris entered the valve assembly and damaged the valve
- Calcium buildup could get the valve stuck. This only happens if the system dries up. The valve should be under normal operation always wet.
Solution
Please contact Hydraloop support to get rid of most water from the system and instructions to replace the valve.
Sewer obstructed/clogged after Hydraloop (slow flow OR no flow)
Problem
If none of the above seem to be the cause of the problem. It is time to start looking into any potential obstruction/clogging beyond the Hydraloop.
It could be that the venting system of the sewage is malfunctioning/obstructed. If the sewage has no way for air to be pushed out or in, then the water will flow a lot slower. As any vacuum holds the water in place. And any increase in air would mean the air has to be pushed away too. You would see this in the HDM graph of emptying T1/T2 as ‘slow flow’.
Or a ‘water trap’ / ‘U-bend’ is preventing any open air connection to help the water be thrown away.
It could also be that debris is blocking the path of the water from flowing. Either completely blocking it, or slowing the flow.
Solution
Please contact the house plumbers for solving this problem. Inspect venting lines of the house. Or use a de-clogging tool in the sewer line AFTER the Hydraloop. Really make sure to not do it before the Hydraloop installation.