Alarm 530 (or 531, 532, 533, 534, 535, 536, 538, 539, 541) sensor fault — sensor open-circuit or short-circuit

What does Sensor fault 530 mean?

These alarms indicate an open-circuit or short-circuit fault on various sensor inputs (BT3, BT12, BT14, BT15, BT16, BT17, BT28, BP8, BP9, BT84).

• Loose sensor connection.
• Damaged sensor wiring (open-circuit or short-circuit).
• Defective sensor.

Click steps to track your progress.

1. 1

   Check the indoor module/control module display for the specific sensor fault indicated (e.g., BT3, BT14).

2. 2

   Inspect the wiring to the identified sensor for any visible damage or loose connections.

3. 3

   Gently re-seat any accessible sensor connections if they appear loose.

4. 4

   If the issue persists, contact a qualified technician to diagnose or replace the faulty sensor.