Fault 30 — Flow sensor mixing circuit error

What does 30 mean?

The system detects an issue with the flow sensor in the mixing circuit, indicating it cannot accurately measure water flow.

• Faulty flow sensor.
• Loose or corroded wiring connections to the sensor.
• Blockage in the mixing circuit affecting flow.

Click steps to track your progress.

1. 1

   Attempt a manual fault reset via the info key on the unit's display.

2. 2

   Power cycle the heat pump system by turning it off at the main breaker for 60 seconds, then restoring power.

3. 3

   Ensure there are no closed valves or obvious obstructions in the mixing circuit.

4. 4

   Check the sensor's wiring connections (if safely accessible with power off) for looseness or damage.

5. 5

   If the issue persists, contact a qualified technician to test or replace the flow sensor.