S.98 - Flow/return sensor test running

What does S.98 mean?

The boiler is currently performing a self-test of the flow and return temperature sensors. During this diagnostic test, all heating demands are temporarily blocked.

• The boiler's internal diagnostic system is performing a routine check of the flow and return temperature sensors.

Click steps to track your progress.

1. 1

   No user action is required, as this is a normal self-test function of the boiler.

2. 2

   Wait for the test to complete; heating demands will resume automatically once the diagnostic is finished.

3. 3

   If this status persists for an unusually long period, contact customer service for further assistance.