Troubleshooting: No WARM water (no mixture of hot and cold) on tub shower units
This is most likely due to an error in installation, an issue with the cartridge, a lack of hot and cold water supplied to the valve or a lack of calibration of temperature.
First, it is essential to identify the model of your faucet. Please view our Find Your Product section to determine your model.
For Posi-Temp models:
- Make sure the handle is on properly. If it is on upside down, the handle will not rotate the cartridge to provide a mixture of hot and cold. Simply remove the handle and reinstall.
- If issue persists, replace the 1222 cartridge and flush the valve body.
For Moentrol or standard valve models:
Replace the 1225 cartridge and flush the valve body.
For ExactTemp models:
- Verify the shut off valves (check stop kit) are in the "open" position. This will be a screw in the center of the check stop kit. These should be unscrewed counter-clockwise.
- Check to see if the hot and cold lines are reversed. If the supply lines are accessible, feel the temperature of the pipes. The cold supply must be connected to the cold (right) side of the valve, and the hot supply must be connected to the hot (left) side of the valve. If this is the case, the valve will need to be reinstalled. Note: The cartridge cannot be reversed to correct this issue.