Last year I posted about replacing the controller in our Tecma macerating toilet. I concluded the post saying that it failed again even after replacing the controller, and I suspected the pump might be the fault.

To test this, I rearranged the wires, so the power wire to the toilet and the pump wire could be reached at the back of the toilet without having to dismount it again. Conveniently, they both have the same style plug, so it is possible to connect the pump directly to the power supply, bypassing the controller, so it runs continuously — obviously only briefly, before disconnecting again. That was enough to get the pump moving again. It has been working flawlessly since then. But if it were to ever stop again, I can easily repeat that process.