Fujitsu · Waterstage SuperHP Heat Pumps
This indicates a fault with a magnetic relay in the outdoor unit, often involved in switching power to various components.
Click steps to track your progress.
Turn off the main power supply to the heat pump for 30 seconds, then turn it back on.
If the error persists, use the 'Reset HP' function (Line 6711) in the control system.
Contact a qualified service technician for relay inspection or replacement.