Fault 50 — DHW sensor 1 error

What does 50 mean?

The system detects an issue with the domestic hot water (DHW) sensor 1, meaning it cannot accurately measure the temperature of the hot water.

• Faulty DHW sensor.
• Loose or corroded wiring connections to the sensor.
• Sensor positioned incorrectly or obstructed in the DHW tank.

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

   Check the DHW settings on the control panel for any unusual configurations.

4. 4

   If the issue persists, contact a qualified technician to inspect and potentially replace the DHW sensor.