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Grundfos CU-200 SQ Flex control box

Grundfos CU-200 SQ Flex control box
SKU: CU-200


Grundfos CU-200 SQFlex Controller

For use with utility power or sine wave inverters for AC, or series PV arrays for DC.

A user-friendly interface box that maintains two-way communication with the pump and monitors the operating conditions. Built-in diagnostics indicate faults and dry-running, operating status power consumption and level switch input. Built in system monitor display shows pump operation, full tank, input power (watts), Alarm indicator for dry run, overvoltage, overload, and overtemperature.

The CU 200 control unit is a combined status, control and communication unit especially developed for the SQFlex system. Furthermore, the CU 200 enables connection of a level switch. May be used with the IO-100 and/or IO-102.

The CU 200 incorporates cable entries for:

  • power supply connection (pos. 6)
  • pump connection (pos. 7)
  • earth connection (pos. 8)
  • level switch connection (pos. 9).

This controller will NOT work with modified sine wave inverters such as the Xantrex TR series or any of the discount inverters often sold in stores.

Additional Information

Additional Information

SKU CU-200
Bundle Pre-Configured Price No
No Additional Details
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Lots of unnecessary "gotchas" Review by Joe in Missouri
After all sorts of snags, and 20 days without water, my Grundfos pump would not work because it, and this controller was shipped with virtually no instructions. (unless you consider hieroglyphics instructions)

Nothing about a "reverse pressure switch" from the salesman that sold me the system, NOR anything at all from Grundfos. When I called the salesman seemed to think that it was my fault for not being clairvoyant and calling them for info that they did not provide and I did not know existed...... needless to say I bought the needed pressure switch elsewhere.

It also amazes me that Gundfos does not include a jumper, to allow the CU200 to operate with NC pump switch contacts. For the price it should shine your shoes....

My last bone to pick is also with Grundfos. What a goofy bracket to hang it. (Also with no instructions at all ) I have hung a lot of things but nothing as goofy as the bracket on this thing.

(Posted on July 20, 2017)
Would you recommend this product to a friend? Not sure

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