Hydra 64hd issue

WhatCouldGoWrong71

TheDryReef
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I haven’t used this light in a long time. I got a second system up and running and I’m trying to add some additional lights. It’s flashing red green nonstop. I can’t get it to do anything. The fan is working fine. I’ve held the button for 10 seconds. I’ve held the button and unplugged it and plugged it back in. Same thing. Any thoughts?

 
Both fans spin up freely? Flashing red/green generally means a fan fault
 
Both fans spin up freely? Flashing red/green generally means a fan fault
Both? There is only one on the top unless there is a second internally. I’ve wondered if the fan is giving faulty readings as I chased this too. The exterior facing fan is working fine and turns on as soon as I power up the unit.
 
Both? There is only one on the top unless there is a second internally. I’ve wondered if the fan is giving faulty readings as I chased this too. The exterior facing fan is working fine and turns on as soon as I power up the unit.
Sorry, didn't know if there were one or two fans lol
 

WHICH PART OF YOUR SETUP IS HARDEST TO REACH OR REMOVE FOR ROUTINE MAINTENANCE?

  • Glass behind or beside the tank

    Votes: 8 36.4%
  • Powerheads or wavemakers

    Votes: 2 9.1%
  • Sump or rear filtration chambers

    Votes: 2 9.1%
  • Skimmer or other filtration equipment

    Votes: 1 4.5%
  • Overflow or plumbing

    Votes: 6 27.3%
  • Lights or lids

    Votes: 0 0.0%
  • Mine is pretty easy to access!

    Votes: 2 9.1%
  • Other—tell us what I missed

    Votes: 1 4.5%
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