Results 1 to 5 of 5

Thread: Grundfos CU 200 Always Pumping

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. #1

    Grundfos CU 200 Always Pumping

    I have a solar setup with a generator backup. CU200 SQFlex with a IO 101 SQFlex Switchbox.

    I recently found the tank overflowing. The CU200 is showing a full tank, is indicating water flow and the power switch is ON. The power switch is unresponsive. It will not shut off. To stop the water pumping I have to shut off the IO 101.

    I've checked all the connections. Disconnected the Float Switch. No changes. My take is that the circuit board is fried and I need to buy a new controller.

    Does anyone have any suggestions? I'm at a bit of a loss here.

    Thanks in advance.
    Last edited by patbob; 03-10-2017 at 02:04 PM.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Grundfos
    By lkoops in forum Solar Pumps
    Replies: 9
    Last Post: 12-15-2013, 09:27 AM
  2. Grundfos cu321
    By Bridge in forum Pumps in general
    Replies: 2
    Last Post: 07-01-2012, 04:11 AM
  3. getting control of my grundfos 3hp!!
    By nelraq in forum Pumps in general
    Replies: 7
    Last Post: 05-01-2010, 04:01 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts