en
Maintenance
258
WILO SE 2021-12
Code
Fault
Cause
Remedy
647
Sensor source not suit-
ably configured.
Sensor 2 is not con-
nected to correct
source. Input is not
correctly configured.
Configure source or
select another source.
The sensor source for the cooling function is not correctly configured. In the
context menu there is a link for configuring the sensor source.
649
Sensor source not avail-
able.
Sensor value 2 is not
connected to existing
CIF module.
Insert CIF module.
Activate CIF module.
The sensor source or the CIF module is not correctly configured. In the con-
text menu there are links for configuration.
650
No MFA
1)
partner pump
MFA
1)
is selected, but
no partner pump is
configured.
Configuration of MFA
1)
partner pumps is required
or select another control
mode.
MFA
1)
collects the requirement of configured partner pumps to supply in
total. For this purpose, the partner pumps must be selected in the MFA
1)
con-
figuration.
Table 56:
Configuration warnings
1)
MFA= Multi-Flow Adaptation
19
Maintenance
ƒ
Maintenance tasks: The technician must be familiar with the use of operating fluids
and their disposal.
ƒ
Electrical work: Electrical work must be performed by a qualified electrician.
ƒ
Installation/dismantling work: The installation/dismantling must be carried out by a
qualified technician who is trained in the use of the necessary tools and fixation
materials.
It is recommended to have the pump serviced and checked by the Wilo customer ser-
vice.
DANGER
Risk of fatal injury due to electrical current!
Improper conduct when carrying out electrical work can lead to death due to electric
shock!
• Any work on electrical devices may only be carried out by a qualified electrician.
• Before carrying out any work, disconnect the unit from the power supply and se-
cure it against accidental switch-on.
• Any damage to the pump connection cable should only ever be rectified by a
qualified electrician.
• Never poke around in the openings of the motor or electronic module or insert
anything into them.
• Follow the installation and operating instructions for the pump, level control
device and other accessories.
• After completing the work, refit previously dismantled protective devices, for ex-
ample, covers or coupling covers.
DANGER
When dismantled, the permanent magnet rotor inside the pump can pose mortal
danger for people with medical implants (e.g. pacemakers).
• Follow the general behavioural guidelines that apply to handling electrical
devices!
• Do not open the motor!
• Dismantling and installation of the rotor may only be carried out by Wilo cus-
tomer service! If you have been fitted with a pacemaker, you must
not
carry out
this kind of work!
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