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F.3. REPLACING THE CONTROLLER FUSE
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 such a case check the fuse and, if needed,
replace it.
Repairs and maintenance may only be performed by a qualified specialist!
Safety warning
Before working on the unit, switch off the power supply and secure it against being
switched on again! The Controller is not equipped with a power switch. It can be
switched off e.g. by a circuit breaker in the electrical enclosure. Check for the absence
of power! The unit may not be put into operation if there is visible damage.
Only use the supplied spare fuse or a fuse of the same design with the following
specifications: T2A 250V..
Disconnect the device from the mains, open it,
remove the old fuse and check it. If it is defective,
replace it with a new one. Locate and repair the
source of the error (e.g. a defective pump).
Then first recommission the controller and check
the function of the switch outputs in manual
mode as described in Chap. 4.1.
CONTROLLER MAINTENANCE
Performing maintenance:
• Check date & time (Chap. 3.1.)
• Assess/check plausibility of statistics (Chap. 1.)
• Check the error memory (Chap. 2.6.)
• Check the switch outputs in manual mode (Chap. 4.1.)
Fuse
