sensor fault BS1 — Air flow sensor out of range

What does 32 mean?

The BS1 air velocity sensor indicates that the air flow is outside of its normal operating range. This alarm typically resets automatically and will block the compressor.

• Obstruction in the air intake or exhaust path.
• Faulty air velocity sensor (BS1).
• Fan malfunction or blockage.
• Temporary environmental conditions affecting airflow.

Click steps to track your progress.

1. 1

   Check for any physical obstructions in the air intake and exhaust vents of the Heat Pump.

2. 2

   Ensure filters are clean and not blocked. Allow the system to attempt an automatic reset.

3. 3

   Power cycle the Heat Pump by turning it off at the main breaker for 30 seconds and then restarting it.

4. 4

   If the problem continues, contact a qualified service technician to inspect the fan and sensor.