Alarm Message - Dimplex FD 9405 / L20 Operating Instructions Manual

Wärmepumpenmanager L20

9.2 Alarm message

If the ESC button flashes red on the display, the controller has
detected an alarm. The cause of this alarm is shown in the plain
text display (alternating with the status display).
If an alarm occurs, the local heating technician/after-sales
service must be informed. Details of the fault (display), the heat
pump designation (type plate) and the software version of the
heat pump manager (operating data) are required for rapid and
precise troubleshooting.
After the problem has been rectified, press the ESC button to
acknowledge the fault.
NOTE
System fault
In mono energy systems, the minimum return set temperature is set if a
heat pump or system fault occurs. Frost protection is ensured. By
manually switching to the 2nd heat generator operating mode, the
building is heated exclusively using the immersion heater.
EN-18 452114.66.71 FD 9405