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901

Com.flt PCA F135 901 — Accessory is blocked: Communication fault with F135

Nibe · Air Conditioning

What does 901 mean?

Communication with accessory F135 has been missing for 15 seconds. A manual reset is required. Check the accessory's status.

Common Causes

  • Check the communication
  • Accessory is blocked
  • Communication with F135 has been missing for 15 seconds

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Perform a manual reset.

  2. 2

    Verify communication cables connecting to F135.

  3. 3

    Ensure accessory F135 is properly installed and powered.

  4. 4

    Restart the system.

Browse all codes in this manual (95)
Verified technical data. Last updated: April 2026

Related Faults

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Source: Nibe Air Conditioning
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