Trailermann Posted October 13, 2021 Share Posted October 13, 2021 What the heck? Thank goodness that COR alarm alerted me. The pump will not stay on. The main screen shows a red "VOLT" error message. I do not know what I could have done to cause this nor do I know how to fix it. Quote Link to comment Share on other sites More sharing options...
SuncrestReef Posted October 13, 2021 Share Posted October 13, 2021 The most common cause of this problem is a failed power brick. If you have a multimeter, test the power adapter to see if it's delivering 24 volts. I'm currently on my 3rd power supply for my COR20. Neptune replaced the adapter under warranty each time. Open a ticket with Neptune Support: https://www.neptunesystems.com/support/contact-support/ Quote Link to comment Share on other sites More sharing options...
Trailermann Posted October 13, 2021 Author Share Posted October 13, 2021 I'm on it. Quote Link to comment Share on other sites More sharing options...
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