Shower Not Switching from Bath

Quick answer

First, check the diverter valve. If it's stuck or damaged, it may need replacement. Ensure the valve is fully turned to the shower position. If the issue persists, inspect the cartridge inside the valve.

Confirm the symptom

• Water only comes from the bath faucet.
• Shower handle is turned to the shower position, but no water comes out.
• Bath and shower both run at the same time.

Tools and prep

• Screwdriver (flathead or Phillips, depending on your fixtures)
• Adjustable wrench
• Replacement diverter valve or cartridge (if needed)
• Towels to soak up any water
• Turn off the water supply to the bathroom
• Place a bucket underneath the valve to catch water

Step-by-step troubleshooting

1. Access the Diverter Valve
   Do: Locate the diverter valve, usually on the tub spout or the wall.
   Observe: Check if it's stuck or damaged.
   Means: Use a screwdriver to remove any covers.
   Next: Inspect the diverter valve.
2. Inspect the Diverter Valve
   Do: Check if the valve is fully turned to the shower position.
   Observe: See if it moves freely or if it's stiff.
   Means: Manually turn the valve.
   Next: Test the shower.
3. Test the Shower
   Do: Turn on the water and switch to the shower position.
   Observe: Check if water comes out of the showerhead.
   Means: Run the water for a few seconds.
   Next: Replace the diverter valve if needed.
4. Replace the Diverter Valve
   Do: Remove the old valve using a wrench.
   Observe: Check for any debris or mineral buildup.
   Means: Unscrew the valve and pull it out.
   Next: Install the new diverter valve.
5. Install the New Diverter Valve
   Do: Insert the new valve and secure it with a wrench.
   Observe: Ensure it's tight but not over-tightened.
   Means: Screw in the new valve.
   Next: Test the shower again.
6. Check the Cartridge
   Do: If the diverter valve is fine, check the cartridge inside.
   Observe: Look for any signs of wear or damage.
   Means: Remove the cartridge and inspect it.
   Next: Replace the cartridge if necessary.
7. Replace the Cartridge
   Do: Install a new cartridge if the old one is damaged.
   Observe: Ensure it fits properly and moves freely.
   Means: Insert the new cartridge and reassemble.
   Next: Test the shower one last time.

Common causes

Parts matching

Ensure you have the correct parts before starting the repair.

• Diverter valve compatible with your shower and bath setup
• Replacement cartridge for the diverter valve
• Adjustable wrench for tightening and loosening fittings
• Vinegar or descaling solution for mineral buildup
• Towels to clean up any spills or drips

Check the manufacturer's guidelines for specific part numbers and compatibility.

When to call a professional

• If the diverter valve is severely damaged and cannot be replaced.
• If the issue persists after replacing the diverter valve and cartridge.
• If you encounter significant water damage or leaks.
• If you're uncomfortable performing the repair yourself.
• If the problem involves complex plumbing issues beyond the diverter valve.

FAQ

Related guides

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