Air Filter

Before cleaning or performing maintenance, disconnect the power supply and wait until the fan stops.When you remove the air filter, do not touch the metal parts of the indoor unit. Doing so may cause an injury.Air filters must be purchased separately. Dirty filters greatly restrict the flow of air and may cause damage to the moving parts. If the filters become clogged the Electric Heaters and blower motor could overheat resulting in a potentially dangerous situation. The filters should be replaced at least once a month. On new construction, check the filters every week for the first four weeks and every three weeks after that, especially if the indoor fan is running continuously. When replacing the Filter you must use filters that are the same size as those recommended in Table.Capacity Disposable Filter Size for Bulit-in Filter CompartmentUnit : kBtu/h(RT)Unit : Inch (mm)9(0.75)16 x 20 x 1(406 x 508 x 25)12(1.0)18(1.5)24(2.0)30(2.5)36(3.0)42(3.5)20 x 24 x 1(508 x 610 x 25)48(4.0)54(4.5)Filters should be used a rating of MERV 4 or less. If you use filters that has a rating MERV 5 or above, it can cause cooling & heating capacity down.

Filter Care

Inspect the air filter every month. If dirty, wash reusable filters with a mild detergent. Replace disposable filters with new filters. Filters should be clean to assure maximum efficiency and adequate air circulation. Drapes, furniture or other obstructions blocking your supply and return air grilles will also decrease efficiency.Permanent type, washable, High-velocity filters may be cleaned with a vacuum cleaner or taken away from the unit & washed with a garden hose. Be sure to shake off excess water and allow filter to completely dry before re-installing the filter.Turn off the power to the appliance.Release the thumbscrew a.Take out the filter cover b.Slide dirty filter out, replace with a new filter.To assemble in reverse order.