Alarm Z1 Condensate sensor heating mode TR3 fault — Repeated condensate sensor TR3 fault

What does 5416 mean?

This alarm triggers if warning codes 5414 or 5415 occur three times within two hours, or if sensor TR3 is continuously broken or shorted for 15 minutes. It indicates a persistent issue with the condensate sensor in heating mode.

• Loose screw terminal for sensor TR3 on the I/O module.
• Broken sensor TR3 or its signal cable.
• Defective I/O module.

Click steps to track your progress.

1. 1

   Check the screw terminal for sensor TR3 on the I/O module and ensure it is securely fastened.

2. 2

   If the alarm persists, contact a qualified technician to inspect the sensor's cable and resistance.

3. 3

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