Maintenance; Faults, Causes And Remedies; Fault Display And Acknowledgement; History Memory For The Faults - Wilo W-CTRL-CC Série Notice De Montage Et De Mise En Service

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9 Maintenance

Have maintenance and repair work carried out by
qualified skilled personnel only!
DANGER! Risk of fatal injury!
There is risk of fatal injury from electrical shock
when working on electrical equipment.
• The switchgear should be electrically isolated and
secured against unauthorised switch-on during
any maintenance or repair work.
• Any damage to the connection cable should only
ever be eradicated by a qualified electrician.
• The switch cabinet must be kept clean.
• Clean the switch cabinet and fan if they are con-
taminated. The filter mats in the fans must be
checked, cleaned and renewed if necessary.
• If the motor power is 5.5 kW or more, check the
contactors for burn-out from time to time, and
renew them if there is significant burn-out.
• The loading status of the real-time clock buffer
battery is registered by the system and if neces-
sary reported. In addition, an exchange cycle of
12 months is recommended. For this purpose,
change the battery in the CPU assembly according
to the following illustration.
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10 Faults, causes and remedies

Have faults remedied by qualified personnel only!
Follow the safety instructions in chapter 2.

10.1 Fault display and acknowledgement

If a fault occurs, the background colour of the
touch display turns RED, the collective fault signal
is activated and the fault is displayed in menu 4.2
with fault code number and alarm text.
A signal is sent to the defined recipient(s) for sys-
tems equipped with remote diagnostics.
The fault can be acknowledged in menu 4.2 with
the "RESET" button or by remote diagnostics.
If the cause of the fault is removed before
acknowledgement, the background colour of the
touch display changes to GREEN. If the fault
remains, the background colour changes to
ORANGE.
A faulty pump is indicated on the main screen by a
flashing pump symbol.

10.2 History memory for the faults

A history memory has been set up for the switch-
gear and operates according to the FIFO principle
(first-IN, first-OUT). Each fault is stored with a
time stamp (date / time of day). The memory is
configured for 35 faults.
The alarm list (menu 4.2.1) can be called up from
the menu 4.2.
WILO SE 11/2018