Fault Memory; Further Steps For Troubleshooting; Appendix; System Impedance Tables - Wilo Control MS-L 2x4kW Notice De Montage Et De Mise En Service

APPENDIX

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.
P Deleting the fault memory
1
The fault memory is deleted by simultaneously
pressing and holding down (for approx. 1 s) the
pump 1 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 and/or written support from Wilo
Customer Service
• On-site support from Wilo customer service
• 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
Installation and operating instructions Wilo-Control MS-L 2x4kW
System impedances for 1~230 V, 2-pole, direct starting
Power
System impedances for 3~400 V, 2-pole, direct starting
Power
System impedances for 3~400 V, 4-pole, direct starting
Power
Connections/h
6
6
24
24
30
System impedance
kW ohms
2.2 0.1480
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 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 return queries and incorrect or-
ders, the serial and/or article number must always
be supplied.
Subject to change without prior notice!
English
Connections/h
30
Connections/h
6
6
6
24
24
24
30
30
30
Connections/h
6
6
24
24
24
30
30
30
41