Question about Pentair Minimax NT Heater

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E04 fan failure reading on thermo screen, heater turns on then off no heat, no blower...

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There is one thing that may correct this issue. You can try to reset the heater. What you will need to do is open the right hand side door and look for the POWER toggle switch, turn that off. Then turn off the Circuit Breaker that goes to the heater. Wait about 15 to 20 minutes, then reverse the order- circuit breaker on, then heater on. Try and start the heater.

If the EO4 code comes up again, look on the backside of the display panel for the diagnostic lights. If there is a problem with the heater, there will be a RED light next to some letters. That will indicate what is causing the issue with the heater.

If you do not have a manual, you can find on online at the following link:

http://www.pentairpool.com/pdfs/MiniMaxNTOM.pdf

Hope this helps!

Posted on Jul 13, 2009

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