Care and cleaning. GEAppliances.comTurn off the Zoneline and disconnect the power supply before cleaning.Indoor/Outdoor CoilsThe exhaust coils on the Zoneline should bechecked regularly. If they are clogged with dirtor soot, they may be professionally steam cleanedby your GE service center. You will need to removethe unit from the case to inspect the coils becausethe dirt build-up occurs on the exhaust side.-- Outdoor coilsHave the coils cleaned regularly.DrainClean the drain system regularly to preventclogging.Base PanIn some installations, dirt or other debris maybe blown into the unit from the outside and settlein the base pan (the bottom of the unit).In some areas of the United States, a "gel-like"substance may be present in the base pan.Check it periodically and clean, if necessary.Air FiltersTo maintain optimum performance, change the filter at least every 50 days.The most important thing you can do to maintainthe Zoneline is to change the filter at least every30 days. Dirty filters reduce cooling, heatingand air flow.Changing the filter will'. Decrease cost ofoperation, save energy, prevent clogged heatexchanger coils and reduce the risk of prematurecomponent failure.NOTICE: Do notoperatethe Zoneline without the filter in place. Ira filterbecomes torn or damaged, it should be replacedimmediately.Operating without the filter in place or witha damaged filter will allow dirt and dust to reachthe indoor coil and reduce the cooling, heating,airflow and efficiency of the unit.Replacement filters should be purchasedfrom your local retailer where air conditionerand furnace accessories are sold.Filter size required is 20" x 20" x 1".To removeand replacethe filter:FilterRemove filterfilterFilterReturn air grille Access-panel withreturn air grille 9