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Installation and operating instructions • Drive for Wilo-Helix2.0-VE / Wilo-Medana CH3-LE • Ed.01/2022-06
18
Faults, causes, remedies
WARNING
Have faults remedied by qualified personnel only! Observe
safety instructions.
In case of faults, the fault management still provides realistic pump output and functional-
ities.
A fault is checked without interrupting operation, if mechanically possible, and an emer-
gency operation or control mode is established if required. The fault-free pump operation is
resumed when the cause for fault is no longer present.
Example: The electronic module is again cooled down.
NOTICE
If the pump behaves incorrectly, check that the analogue and digital in-
puts are configured correctly.
For details, see the detailed instructions at www.wilo.com
If the malfunction cannot be rectified, consult a specialist technician or the nearest Wilo
customer service or representative location.
18.1
Mechanical faults without error
messages
Faults
Causes
Remedies
Pump does not start or stops work-
ing
Cable terminal loose
Fuse protection defect
Pump does not start or stops work-
ing
Fuse protection defect
Check fuses; replace faulty fuses
Pump makes noises
Motor has bearing damage
Have the pump checked by Wilo customer
service or a specialised service centre and
repaired if necessary
Table 17: Mechanical faults
18.2
Diagnostics help
In order to support fault analysis, the pump provides additional help apart from fault noti-
fications: Diagnostics help is used for diagnosis and maintenance of electronics and inter-
faces. Apart from hydraulic and electrical overviews, information about interfaces, device
information and manufacturer’s contact data are provided.
In the “Diagnostics and measured values” menu , select
Diagnostics
Description
Display
Device information
Display of different device informa-
tion
•
Pump type
•
Article number
•
Serial number
•
Software version
Service information
Display of different manufacturer-
specific device information
•
Hardware version
•
Parametrisation
Overview of relay status SSM/SBM
Overview of the current relay usage
e.g. relay function SSM, forced con-
trol OFF, not active
•
relay function
•
Forced control
•
Status
Overview of the analogue input
(AI 1)
Overview of settings
e.g. type of use relative pressure
sensor, Signal type 0-10 V, 3.3V
•
Type of use
•
Signal type
•
Signal value
Overview of the analogue input
(AI 2)
Overview of settings
e.g. Type of use setpoint input, sig-
nal type 4 - 20 mA, 12.0mA
•
Type of use
•
Signal type
•
Signal value
