245. Check the following points. If there is any malfunction,resolve it according to the chapter “Troubleshooting” in theowner’s manual.Owners ManualThe indoor unit--Whether the switch on the remote controller works well.--Whether the buttons on the remote controller works well.--Whether the air flow louver moves normally.--Whether the room temperature is adjusted well.--Whether the indicator lights normally.--Whether the temporary buttons work well.--Whether there is vibration or abnormal noise duringoperation.--Whether the drainage flows smoothly.The outdoor unit--Whether there is vibration or abnormal noise duringoperation.--Whether the generated wind, noise, or condensed of by theair conditioner negatively impact the neighborhood.--Whether any of the refrigerant is leaked.6. Turn off the main power supply after operation.IMPORTANT: A protection feature prevents the air conditionerfrom being activated for approximately 3 minutes when it isrestarted immediately after shut off.DUCTED INDOOR UNITS INSTALLATIONINSTALLATION OF THE INDOOR DUCTED UNITRequirements on the Installation Location1. Ensure the hanger is strong enough to withstand the weightof the unit.2. The drainage pipe is easy for connection.3. No obstacle is in the inlet/outlet and the air circulation is ingood condition.4. Ensure the installation space is left for access tomaintenance.5. It should be far away from where there is a heat source,leakage of any inflammable, explosive substances, or smog.6. It is the ceiling type unit (concealed in the ceiling).7. The power cords and connection lines of the indoor andoutdoor units must be at least 1m away from the TV set orradio to avoid the image interference and noise (even if 1mis kept, the noise may be produced due to the strongelectromagnetic wave).Installation of the Indoor Ducted Unit1. Insert the M10 expansion bolt into the hole, then knock thenail into the bolt. Refer to the Outline Dimension Drawingsof the Indoor Unit for the distance between holes and seeFig. 50 for the installation of the expansion bolt.Fig. 50 --- Expansion Bolt2. Install the hanger on the indoor unit (see Fig. 51).Air conditioning unitHanger boltAnchorFig. 51 --- Hanger Bolt3. Install the indoor unit on the ceiling, as shown in Fig. 52.48mmFig. 52 --- Install the indoor unitS Prior to the installation, make a good preparation for all piping(refrigerant pipe, drain pipe) and wiring (wires of the wiredcontroller, wires between the indoor and outdoor unit) of theindoor unit to make the further installation much easier.S If there is an opening in the ceiling, its better to reinforce itto keep it flat and prevent it from vibrating. Consult the userand builder for more details.S If the ceiling is not strong enough, the unit can be secured onan angle iron beam.S If the indoor unit is not installed in the air conditioningarea, place a sponge around the unit to prevent condensing.The thickness of the sponge depends on the actualinstallation environment.! CAUTIONINDOOR DUCTED UNIT HORIZONTAL CHECKAfter the installation of the indoor unit, its horizontality must bechecked to make sure the unit keeps a horizontal fore and aft andmaintains an inclination of 5_ toward the drain pipe right and left,as shown in Fig. 53.Horizontality Check DeviceFig. 53 --- Horizontal check device