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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.
Fault Types:
Failure 1:
Undercurrent
Check connection and correct fit between water part and control box, i.e. fit of
Harting coupling.
Failure 2:
Overload
Failure in magnet (solenoid) coil in water unit. Inform Hydrotec immediately in
that case since no further local steps are possible.
It is necessary to note the time the failure had been recognised first.
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 control 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.
Water Part
Connection
Mains
Connection
VFC Contact
Fuse 3.15 AT
Thermal
Protection
