13.2 Faults without fault message
The table below shows the faults without fault messages:
Fault Possible cause Action
No indication on the display. There is no mains voltage.
Switch on the controller or
connect the controller to the
mains voltage.
Make sure that the main fuse
for the mains connection is
switched on.
The controller's fuse is faulty. If necessary, replace the
controller's fuse. Use a type
2A/T fuse.
Check the 230 V components
for a short circuit.
In the event of a short circuit,
contact the manufacturer.
The controller is faulty. Contact the manufacturer.
The pump fails to switch on.
Manual mode has been
activated.
Exit manual mode.
The preconditions for the
pump to be switched on have
not been met.
Wait until the preconditions for
the pump to be switched on
have been met.
The temperature limit for a
storage tank (95 °C) has been
exceeded.
Make sure that the wiring is
intact.
Make sure that the system
components are intact.
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