Alarm 236 - Unsuccessful defrosting

What does 236 mean?

The Heat Pump has failed to complete 10 consecutive defrosting cycles. This can lead to ice build-up and reduced efficiency.

• System temperature and/or flow is too low.
• Insufficient available system volume.
• Significant wind effect.
• Poor flow or poor heat transfer.

Click steps to track your progress.

1. 1

   Check the outdoor unit for any excessive ice build-up around the fan or evaporator coil.

2. 2

   Ensure the system's heating medium flow is adequate and circulation pumps are working correctly.

3. 3

   Verify that the system pressure is within the recommended range.

4. 4

   If external conditions like high wind are a factor, consider installing wind protection. If the issue persists, contact a NIBE service technician.