Water heater produces hot water but temperature is too low

Safety first: Be cautious of hot surfaces and water. Turn off power and gas before internal checks.

• Check setpoint: Verify the DHW temperature setting on the Protherm control panel and increase if necessary within safe limits.
• Measure actual temperature: Use a thermometer at the tap to confirm outlet temperature.
• Descale heat exchanger: If temperature is low despite high burner power, descale the plate or primary heat exchanger.
• Check sensors: Test DHW NTC sensor; replace if it reads higher than actual temperature.
• Gas/element check: For gas models, have a technician verify gas pressure and burner output. For electric models, test each heating element; replace any failed sections.

Warning: After adjustments, verify that outlet temperature does not exceed scalding limits, especially in homes with children or elderly occupants.