Compressor blocked — Remains blocked due to BP4 maximum limit

What does Compressor blocked mean?

The compressor in the F2040 unit would stay blocked if it stopped due to reaching a maximum limit on BP4 (likely a pressure sensor). This prevented it from restarting even after the limit condition passed.

• Compressor stopped due to reaching BP4 maximum limit.
• Software bug preventing automatic restart after the limit condition clears.
• Issue with the BP4 sensor or related pressure system.
• Excessive pressure in the system preventing compressor operation.

Click steps to track your progress.

1. 1

   Cycle power to the F2040 outdoor unit to attempt a compressor restart.

2. 2

   Check the BP4 sensor connections and verify its functionality.

3. 3

   Review the system settings related to BP4 maximum limits for the compressor.

4. 4

   Update the NIBE SMO 20 firmware to version 8044R3 or later.

5. 5

   If the issue persists, contact service personnel to inspect the compressor and pressure system.