Warning Heat Pump Z2 failed defrosting

What does 5380 mean?

This warning indicates that Heat Pump Z2 has failed to complete its defrosting cycle. It occurs if specific temperature or pressure conditions are not met during defrosting, triggering after 3 failures in 3 hours, or if conditions are active for 30 minutes.

• Ice buildup on the outdoor unit.
• Blockage of airflow around the outdoor unit.
• Malfunction of sensors (TR24 or PH1) involved in the defrosting cycle.

Click steps to track your progress.

1. 1

   Visually inspect the outdoor unit for any significant ice accumulation and gently clear it if safe to do so.

2. 2

   Ensure nothing is blocking the airflow around the outdoor unit.

3. 3

   If the warning persists, contact a qualified technician to inspect the defrosting system.