Question about Holmes Products Cool Mist HM7204-U Humidifier
Mine did the same, I cut one out of a piece of inner tube rubber. It has worked just fine for two seasons.
Posted on Feb 01, 2008
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Posted on Jan 02, 2017
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Q: Unit is running intermittently.
A: How long has it been since the contents of the cartridge were replaced? If 2-3 months have passed, it is time to replace the contents of the cartridge. However the demineralization cartridge and or the granules must be exchanged at the latest after 6 months or the unit ceases operating at its full performance. If the contents of the cartridge were just replaced there are probably too many granules in the cartridge. Remove 2 tablespoons of granules from the cartridge.
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