Alarm Z1 High pressure sensor JR1 fault — Repeated high pressure sensor fault

What does 5440 mean?

This alarm triggers if warning 5438 is registered three times within two hours, or if the circuit for pressure sensor JR1 is continuously broken for 15 minutes. It signifies a persistent issue with the high pressure sensor JR1.

• Poor connection in cabling or terminal 16,18 on the I/O module.
• Defective pressure sensor JR1.
• Defective I/O module.

Click steps to track your progress.

1. 1

   Check the cabling and terminal connections (16 and 18) on the I/O module, ensuring they are securely fastened.

2. 2

   If the alarm persists, contact a qualified technician to diagnose the pressure sensor or I/O module.

3. 3

   Do not attempt to replace sensors or I/O modules yourself unless you are a qualified installer.