More than likely the fan tray is on its way out , we see this all the time on our older Cat 4006's where its says fan failed then fan ok . The tray is going . Its not the whole tray either, whatever sensor they are using is sensitive enough to know when a single fan in the whole fan tray is gone and it will give you those messages . You almost always can tell which fan it is in the tray too because it will not spin nearly as freely as the others in the tray . That being said I would replace it . Fan services are CRITICAL if you have it in a closet where the air is not conditioned .
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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