Graham Thorpe
Updated at 2022-07-06 19:54:20 UTC

Sounds like the installer has zone 6 mis-connected to the master valve terminal.  Take the cover off the controller (held only by magnets) and you will probably see a wire going to the 'M' connection instead of '6'.  Push the orange button down to release the wire and then insert it into the proper opening for zone 6 while holding down the red button for it.

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2022-07-07 00:43:00 UTC  
Thank you Graham. I did as you suggested and it worked perfectly