Error 50 - DHW temperature sensor 1 fault

What does 50 mean?

The user interface displays '50: DHW temperature sensor 1', indicating an issue with the domestic hot water temperature sensor (Location: BX3 (X84)). This error typically triggers an automatic reset.

• Faulty DHW temperature sensor.
• Damaged or loose wiring to the sensor.
• Sensor is not properly installed or has poor contact in the hot water tank.

Click steps to track your progress.

1. 1

   Turn off the main power supply to the heat pump for 30 seconds, then turn it back on.

2. 2

   Inspect the DHW sensor for any physical damage or ensure its connections are secure.

3. 3

   Allow time for the automatic reset to occur (default 6 hours) or use the manual reset function (Line 6711) if available.

4. 4

   Contact a qualified service technician to inspect or replace the DHW sensor.