46
Danger
Danger
If the mains voltage is switched on and the controller still does not function or display
anything, then the internal device fuse may be defective. In that case, open the device
as described under C.1, remove the old fuse and check it. Exchange the defective
fuse for a new one, locate the external source of the error (e.g. pump) and exchange it.
Then fi rst recommission the controller and check the function of the switch outputs in
manual mode as described under 4.2.
Repairs and maintenance may only be performed by a specialist. Before
working on the unit, switch off the power supply and secure it against
being switched on again! Check for the absence of power!
Only use the supplied spare fuse or a fuse of the same design with the
following specifi cations: T2A 250V
Fuse
Z.2 Replacing the fuse
Z.2.1
Fuse
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