ENGLISHPeriodical ChecksProtections enabled by the Unit control systemType Description Monthly Every 4 months Once a yearIndoor unitClean the air filter (1)Clean the condensate drain pan (2) Thoroughly clean the heat exchanger (2) Clean the condensate drain pipe (2) Replace the remote control batteries Outdoor unitClean the heat exchanger on the outsideof the unit (2) Clean the heat exchanger on the inside ofthe unit (2) Clean the electric components with jets ofair (2) Verify that all the electric components arefirmly tightened (2) Clean the fan (2) Verify that all the fan assembly is firmlytightened (2) Clean the condensate drain pan (2) The checks and maintenance operations described are essential to guarantee the effi-ciency of the air conditioner.The frequency of these operations varies according to the characteristics of the area, theamount of dust, etc.(1) The described operations should be performed more frequently if the area of installation isvery dusty.(2) These operations must always be performed by qualified personnel. For more detailed infor-mation, see the Installation Manual.Type of protection Description Operation When it enablesProtection against cold air The internal fan is off Heating onheat pump During operationDefrost cycle The internal fan is off Heating onheat pump During operationAnti-frost protectionof internal battery The compressor is off Cooling DuringoperationDelayed start of compres-sorThe start of thecompressor is delayed.Cooling or heatingon heat pumpAt start-up or duringthe selectionof the operating modeCAUTION If the air conditioner is operating in heat pump mode, it performs several defrostcycles in order to remove the frost that may have deposited on the outdoor unit (atlow temperatures).In this case, the internal fan is switched off automatically and restarted only afterthe defrost cycle is completed.E-5