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Failure
– remedial action
General:
If there is no display or should no sign for any operation be visible, initially check the following:
Check whether or not the unit is switched on and mains voltage 230V/50 cps available. If that is
all correct, check the fuse as per the below instruction:
The fuse is provided in the terminal unit on the ledge for the water part connections and mains
supply. Please take care that the mains plug is removed prior to opening the unit! Open the lower
front cover and replace fine fuse (3.15 AT).
If there is still no LED scale visible, inform the technical department of Hydrotec.
Failure 1:
Undercurrent
Check connection and correct fit of Harting coupling.
Failure 2:
Overload
Failure at magnet coil in water unit. Inform Hydrotec immediately in that case since there are no
further local steps possible.
The first time the failure had been recognised must be noted.
Disconnect unit from mains voltage
Failure 3:
Short cut
Short cut (external) of coil circuit
Disconnect unit from mains supply. Check for foreign particles in connection (spiral cable of con-
trol box and connection socket of water unit).
Restart unit. Hydrotec have to be informed immediately if the failure arises again. There are no
further local measures necessary. Disconnect the unit from mains supply.
Failure 4:
Control box
Faulty control box. Return box for inspection to Hydrotec along with corresponding failure report
or other information.
Supply conditioning unit
Supply main voltage
Voltage free contact
Fuse 3,15 AT
