Fujitsu · Waterstage SuperHP Heat Pumps
The user interface displays '32: Flow sensor 2', indicating an issue with flow sensor 2 (Location: BX31 (X153)), often in a secondary or different hydraulic circuit. This error typically triggers an automatic reset.
Click steps to track your progress.
Turn off the main power supply to the heat pump for 30 seconds, then turn it back on.
Check the hydraulic system for proper water flow in the relevant circuit where sensor 2 is installed.
Allow time for the automatic reset to occur (default 6 hours) or use the manual reset function (Line 6711) if available.
Contact a qualified service technician to inspect or replace flow sensor 2.