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The air conditioner automatically adjusts the fan speed to Auto in Auto/Dry mode. Timer function does not set. • Check if you press the Set button on the remote control after you have set the time. Odors permeate in the room during operation. • Check if the appliance is running in a smoky area or if there is a smell entering from outside. Operate the air conditioner in Fan mode or open the windows to air out the room. The air conditioner makes a bubbling sound. • A bubbling sound may be heard when the refrigerant is circulating through the compressor. Let the air conditioner operate in a selected mode. • When you press the Power button on the remote control, noise may be heard from the drain pump inside the air conditioner. Water is dripping from the air flow blades. • Check if the air conditioner has been cooling for an extended period of time with the air flow blades pointed downwards. Condensation may generate due to the difference in temperature. Remote control is not working. • Check if your batteries are depleted. • Make sure batteries are correctly installed. • Make sure nothing is blocking your remote control sensor. • Check that there are strong lighting apparatus near the air conditioner. Strong light which comes from fluorescent bulbs or neon signs may interrupt the electric waves. The air conditioner does not turn on or off with the wired remote control. • Check if you set the wired remote control for group control. The wired remote control does not operate. • Check if TEST indicator is displayed on the wired remote control. If so, turn off the unit and switch off the circuit breaker. Call your nearest contact center. The indicators of the digital display flashes. • Press the Power button on the remote control to turn the unit off and switch the circuit breaker off. Then, switch it on again. AA INSTALLATION PARTS Indoor Unit Installation 5. Check the level of the indoor unit by using a leveler. . A tilt of the indoor unit may cause malfunction of a built-in float switch and water leaks. Level 6. Adjust the height of the indoor unit by using the gauge of dimensions. . You should adjust the gauge of dimensions and the pattern sheet to fit the cutting dimensions of ceiling. . Make sure that the indoor unit is installed at a level if the indoor unit slants too much, there can be water leaks. 4 way cassetteCeiling17mm20mmIndoor unitGauge of Dimensions 7. 8. Tighten the upper part nuts. Remove the gauge of dimensions after installing the indoor unit. It is recommended to install the Y-joint before installing the indoor unit. 1. Place the pattern sheet on the ceiling at the spot where you want to install the indoor unit. Since the diagram is made of paper, it may shrink or stretch slightly due to temperature or humidity. For this reason, before drilling the holes maintain the correct dimensions between the markings. Note 2. Insert bolt anchors, use existing ceiling supports or construct a suitable support as shown in figure. ConcreteSuspension bolt(.9.52 or M10) Hole in anchorHole in plugInsert 3. Install the suspension bolts depending on the ceiling type. . Ensure that the ceiling is strong enough to support the weight of the indoor unit. Before hanging the unit, test the strength of each attached suspension bolt. . If the length of suspension bolt is more than 1.5m, it is required to prevent vibration. . If this is not possible, create an opening on the false ceiling in order to be able to use it to perform the required operations on the indoor unit. Ceiling support 4. Screw eight nuts to the suspension bolts making space for hanging the indoor unit. You must install the suspension bolts more than four when installing the indoor unit. NutWasherRubberFasten the nut CAUTION Performing leak test&insulation Leak test LEAK TEST WITH NITROGEN(before opening valves) In order to detect basic refrigerant leaks, before recreating the vacuum and recirculating the R-410A, it’s responsible of installer to pressurize the whole system with nitrogen(using a pressure regulator) at a pressure above 4.1MPa(gauge). LEAK TEST WITH R-410A(after opening valves) Before opening valves, discharge all the nitrogen into the system and create vacuum. After opening valves check leaks using a leak detector for refrigerant R-410A. g The designs and shape are subject to change according to the model. CAUTION Leak check Discharge all the nitrogen to create a vacuum and charge the system. Indoor Unit Installation . When installing insulation in places and conditions below, use the same insulation that is used for high humidity conditions. - High humidity places such as shoreline, hot spring, near lake or river, and ridge (when the part of the building is covered by earth and sand.) - Restaurant ceiling, sauna, swimming pool etc. - The ceiling frequently exposed to moisture and cooling is not covered. e.g. The pipe installed at a corridor of a dormit...

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