Why won't my new shower and water pump turn off?
When the main water line is turned on, the shower has no way to turn off and the water pump runs continuously without building enough pressure to shut off automatically. This leaves people unable to control water flow or stop the pump without manually cutting power at the breaker.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Buying OEM cartridges instead of third-party alternatives
- 2Verifying cartridge orientation and notches
- 3turning the pump on and off using the circuit breaker
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
r/Plumbing2 people · September 2026
“once the main water line is turned on the shower seemingly has no way to turn off.”source ↗
Waste_Still9624 · r/Plumbing · 2 upvotes