Acknowledging Faults; Fault Signals; Fault Memory; Further Steps For Troubleshooting - Wilo Easy Control MS-L 1x4kW Notice De Montage Et De Mise En Service

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10.1. Acknowledging faults

After a fault occurs, a visual and audible warning is
output.
By briefly pressing the Buzzer OFF/reset button,
the audible alarm is deactivated and collective fault
signal relay (SSM) acknowledged.
When held down for longer (min. 1 sec), the fault is
acknowledged and the control is reenabled.
A fault can only acknowledged once it has been
eliminated!

10.2. Fault signals

LED lights up red
Cause: permitted rated current has been exceeded,
excess current release has been initiated
Solution: Check pump and setting of DIP switch
LED flashes red
Cause: Rated current below 300 mA during opera-
tion or phase L2 missing
Solution: Check mains connection of switchgear
and pump connection
LED lights up red
Cause: Winding temperature monitoring has been
triggered
Solution: Check pump and wiring (converter bridge
may be missing); check pump operating conditions
LED lights up red
Cause: High-water alarm has been triggered.
Solution: Check pump/unit operating conditions
and level settings
All LEDs light up simultaneously for 2 sec.
Cause: Button lock active
Solution: Deactivate the button lock by simulta-
neously pressing down the Manual Mode, Stop and
Automatic Mode buttons (for approx. 1 s).
All LEDs light up from right to left.
Cause: Incorrect phase sequence in mains connec-
tion
Solution: Swap over 2 phases in the switchgear's
mains connection

10.3. Fault memory

The switchgear has a fault memory. The last fault
is stored retentively in the fault memory.
opening the fault memory
By pressing down the Stop and Automatic Mode
buttons simultaneously, the last fault is indicated
by the corresponding LED.
Deleting the fault memory
The fault memory is deleted by simultaneously
pressing and holding down (for approx. 1 s) the
Manual Mode and Stop buttons.

10.4. Further steps for troubleshooting

If the points listed here do not rectify the fault,
contact Wilo Customer Service. They can help you
as follows:
• Telephone or written support from Wilo Customer
Service
• On-site support from Wilo Customer Service
38
• Inspection or repair of the switchgear at the
factory
Please note that you may be charged for some
services provided by our Customer Service. For
more details, please contact Wilo Customer
Service.

11. Appendix

11.1. System impedance tables

System impedances for 1~230 V, 2-pole, direct starting
Power System impedance
kW ohms
1.5 0.4180
2.2 0.2790
1.5 0.3020
2.2 0.1650
1.5 0.2720
2.2 0.1480
System impedances for 3~400 V, 2-pole, direct starting
Power System impedance
kW ohms
2.2 0.2788
3.0 0.2000
4.0 0.1559
2.2 0.2126
3.0 0.1292
4.0 0.0889
2.2 0.1915
3.0 0.1164
4.0 0.0801
System impedances for 3~400 V, 4-pole, direct starting
Power System impedance
kW ohms
3.0 0.2090
4.0 0.1480
2.2 0.2330
3.0 0.1380
4.0 0.0830
2.2 0.2100
3.0 0.1240
4.0 0.0740

11.2. Spare parts

Spare parts can be ordered from Wilo Customer
Service. To avoid queries and incorrect orders, the
serial and/or article number must always be stat-
ed. Subject to change without prior notice
APPENDIX
Connections/h
6
6
24
24
30
30
Connections/h
6
6
6
24
24
24
30
30
30
Connections/h
6
6
24
24
24
30
30
30
WILO SE 08/2013 Ed.04 DIN A4