Com. flt PCA Acc. HTS 3 525 — Communication fault with accessory AA34.3

What does 525 mean?

Communication with accessory AA34.3 has been missing for 15 seconds. A manual reset is required. Check the minimum calculated cooling supply setting.

• Check the minimum calculated cooling supply is set to 18° C if AA34.3 is the con- trolling accessory for cooling
• Communication with AA34.3 has been missing for 15 seconds

Click steps to track your progress.

1. 1

   Perform a manual reset.

2. 2

   Confirm the minimum calculated cooling supply is set to 18°C if AA34.3 controls cooling.

3. 3

   Check the communication cable to accessory AA34.3.

4. 4

   Restart the system.