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No:
- Test the valve without the trim installed.
- If the temperature changes can be achieved by manually rotating the thermostatic cartridge stem, the trim is not properly engaging the cartridge.
- Verify the trim installation and determine if a stem extension is required.
- Flush the valve components.
- Flush the cartridge chamber, inlet filters, and check valve inserts to remove any debris or blockage.
- Verify water pressure balance.
- Ensure hot and cold-water supplies have similar pressure.
- The pressure difference between hot and cold supplies must not exceed 15 PSI.
- Replace the thermostatic cartridge
- If the issue persists after completing the above steps.
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Yes:
- Remove the trim.
- Recalibrate the cartridge by rotating the cartridge stem:
- Turn the stem left for hotter water.
- Turn the stem right for colder water.
- The factory setting is 100.4 °F before the hot limit override.
- Reinstall the trim.
- Position the lever at 6 o’clock to ensure proper alignment with the hot limit override.
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