Error H75 — Low water temp protection

What does H75 mean?

The system has activated a protection mode because the incoming water temperature is too low.

• Very cold incoming water source.
• Incorrect system settings for water temperature.
• Possible issue with the water temperature sensor.

Click steps to track your progress.

1. 1

   Check the temperature of the incoming water source.

2. 2

   Review system settings to ensure they are appropriate for current conditions.

3. 3

   Restart the system.

4. 4

   Contact your installer if the low water temperature is unexpected or persists.