Ice Buildup on Unit

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I am getting ice buildup on the filter and sides of my Sentinel HDi90 unit. I have unplugged it, let the ice melt, and removed the drain pump but cannot see any issues with it. I have also checked the drain line and am unable to find anything plugging it. Are you able to help me troubleshoot these issues to get it up and running again?

Thanks, Mike

Asked on Apr 22, 2021 - 10:56:32am

The same thing has happend to me.  With air conditioners ice builds up due to low air flow.  I have cleaned the filer, and there are no obstructions to air flow.  Yet I still have ice.  What is the deal?  

Same here on my HD55. Is there an "ice sensor" somewhere that needs to be replaced?

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