Display not lit / Blank display — No information visible on the heat pump

What does Display not lit mean?

The heat pump's display unit is not showing any information and appears blank or unlit. This prevents you from seeing operational status, settings, or any alarm messages.

• Power supply interruption to the display or heat pump.
• Internal fault within the heat pump.
• Display unit malfunction.
• Loose connection to the display unit.

Click steps to track your progress.

1. 1

   Check if the entire heat pump unit has power. Verify the main power switch or circuit breaker for the heat pump is ON.

2. 2

   Open the heat pump door to check if the display unit itself is securely connected or if there's any visible issue.

3. 3

   If the heat pump door is closed, check the external information window. If it's also blank, the issue is likely with the main unit's power.

4. 4

   If power is confirmed but the display remains unlit, contact your installer for further diagnostics.