Match what you notice
- The switch sticks or drops back while the tap is running
- A stiff or worn mechanism can stop the diverter travelling fully. On some mixers the water supply also affects whether the shower setting works. Tell us if the fault started suddenly and whether the bath spout still has its usual flow.
- Water keeps running from both outlets
- If the bath spout keeps running while the shower is selected, the diverter may not be moving fully or sealing inside the mixer. A few drops left in a hose after changing settings can drain away. Tell us if both streams continue.
- The bath fills normally but the handset is weak
- A kinked hose, scale at the handset or a restriction at the diverter can reduce shower flow. Note whether the bath spout still runs strongly and whether the problem began after fitting a new hose or handset.
- Water appears around the knob or hose joint
- A leak at the switch can come from the diverter seal. Water starting at the hose nut can point to its own washer or connection. If water gets behind the bath or into the room below, stop using the fitting and call.
When the switch resets on its own
Some mixers return to the bath setting after the water is switched off. Others stay where you leave them. A switch that drops back while the shower is running is a different symptom. The instructions for your model explain how its control should work.
What to send before a visit
Share a photo of the whole mixer, its switch and the hose connection. If you can see a brand or model, include it. Say whether the fault is with bath mode, shower mode or both, and whether water keeps escaping when the mixer is off. Leave a stiff control and its fittings in place.
Choosing a seal, diverter or mixer
We check the make, model and condition of the mixer. On some models a seal or separate diverter assembly is available. If the body is damaged or a compatible part cannot be sourced, we can discuss replacement and any access needed below or behind the bath.
Read what to check if water appears under the bath
Further reading
- Bristan Hourglass fitting guide with an automatic return to bath mode (PDF)
- Bristan Quadrato troubleshooting for flow and diverter problems (PDF)
- Methven example of a bath mixer with a push-pull diverter