You must have gotten the smart one. About to try the Konami code on the up down buttons. Get to Know your Air Purifier .................. 2, Introduction ............................................... 3, Unpack & Assemble Filters ...................... 4, Indicators Layout & Description .............. 5, Air Quality Sensors .................................... 6, Operation .................................................... 7, Maintenance & Cleaning .......................... 9, Filter Replacement .................................... 10, Troubleshooting ......................................... 12, Important Safety Guidelines .................... 13, To Buy: Visit www.sylvane.com or call (800) 934-9194, Product Support: Contact Friedrich at 1-800-541-6645, Friedrich operating guide electronic air cleaner c-90a (31 pages), Manual will be automatically added to "My Manuals", Description Et Disposition Des Indicateurs, Air Cleaner Friedrich C-90A Operating Manual, Air Cleaner Friedrich C-90A Service Information, Air Cleaner Friedrich C-90B Service And Parts Manual, Air Cleaner Friedrich C-90B Operating Manual, Air Cleaner FRIEDRICH C-90A Operating Manual, Page 11: Reset Filter Replacement Notification, Page 17: Desempaque Y Ensamble De Filtros, Page 18: Indicadores De Diseño Y Descripción, Page 26: Instrucciones Importantes De Seguridad, Page 28: Composants Du Purificateur D'air, Page 30: Déballage Et Assemblage Des Filtres, Page 31: Description Et Disposition Des Indicateurs, Page 39: Consignes Importantes De Sécurité. The energy efficiency of this ENERGY STAR, qualified model is measured based on a ratio, between the model's CADR for Dust and the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lean your Friedrich Air Cleaner filters at least once a week. Now I’m pretty sure I burned the motors out lol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e have the newest Wallmasters - the ones WITHOUT the Check Filter button on the control panel - yet the instruction booklet that came with the units, and the ones on Friedrich’s website, all have the older model’s info pertaining to resetting the Check Filter alert, which is to press the Check Filter button. I feel stupid even asking this question, but there’s no answers to be found on the internet or even Friedrich’s website. And, the app is useless.