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akira AC-S10CK Service Manual

Akira air conditioner
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Summary of Contents for akira AC-S10CK

  • Page 2 Model : AC-S10CK AC-S10HK Model No: AC-S10CK_S10HK Version 1.0...
  • Page 3 Content Feature …………………………………..……………………………………………….. 4 Specifications ……………………………………………………………………………. 5 Operating range …………………………………………………………………………. 5 Remote control …………………………………………………………………………...7 Refrigeration cycle ………………………………………………………………………. 10 Operation details ………………………………………………………………………… 12 Installation ……………………………………………………………………………….. 22 2-way, 3-way valve ……………………………………………………………………… 33 Trouble shooting ………………………………………………………………………… 41 Exploded drawing …………………………………………………………………… …. 49 Part list …………………………………………………………………………………… 52 Model No: AC-S10CK_S10HK Version 1.0...
  • Page 4 CHAPTER 1: FEATURES MODE DESCRIPTION COOLING Cools, dehumidifies and filters the room air. Maintains desired room temperature. HEATING Heats and filters the room air. Maintains desired room temperature. Operates the appliance at COOLING, HEATING or DRY mode, maintaining desired SMART temperature dependent upon the room temperature.
  • Page 5 CHAPTER 2: SPECIFICATIONS (SEE APPENDIX A) CHAPTER 3: OPERATING RANGE 1. TEMPERATURE RANGE FOR T1 CLIMATE AIR CONDITIONER The preset temperature of the appliance ranges from 18 C to 32 The ambient temperature of the cooling only air conditioner ranges from 18 C to The ambient temperature of the heat pump ranges from –7 C to 43...
  • Page 6 3. REFRIGERANT PIPING The maximum length of the connecting refrigerant piping between i n door unit and outdoor unit is 15m and the maximum elevation difference between indoor and outdoor units are 5m. If the refrigerant piping is longer than 7m,additional refrigerant charge 20g/m for below 1/2 inch gas pipe and 30g/m for below 5/8 or 3/4 inch gas pipe is advis- able.
  • Page 7 CHAPTER 4: REMOTE CONTROLLER The remote controller transmits signals to the system. 1. ON/OFF BUTTON The appliance will be started when it is energized or will be stopped when it is in operation, if you press this button. 2. MODE BUTTON Used to select the type of operation mode.
  • Page 8 DRY mode FAN ONLY mode HEATING mode 3. FAN SPEED BUTTON Used to select the indoor fan motor speed. Automatic fan speed High fan speed Medium fan speed Low fan speed 4.TEMPERATURE SETTING BUTTON Used to adjust the preset room temperature. Used to adjust time in TIMER mode.
  • Page 9 Indication symbols on LCD: Signal transmit. Auto fan speed Cooling indicator Super indicator High fan speed Dry indicator Smart indicator Medium fan speed Fan only indicator Sleep indicator Low fan speed Heating indicator Model No: AC-S10CK_S10HK Version 1.0...
  • Page 10 CHAPTER 5: REFRIGERATION CYCLE 1. Cooling only appliance I ndoor uni t Ö Æ À ä Ï µ Í ³ Í ¼ evaporator l i quid side gas si de O u tdoor uni t 3-way val v e 2-way val v e accum ul ator com pressor capi l l a r y...
  • Page 11 2. Heat pump I ndoor uni t ¼ ¼ Ê õ ² Î Ê ý : evaporator l i quid side gas si de O u tdoor uni t 3-way valve 2-way valve check valve accum ul ator com pressor capi l l a r y reverse valve condenser...
  • Page 12 CHAPTER 6: OPERATION DETAILS 1. SAFETY CONTROL 3 minutes delay for compressor The compressor is ceased for 3 minutes to balance the pressure in the refrigeration cycle in order to protect the compressor. 59 seconds delay for reversing valve The 4-way reversing valve delay for 59 seconds to prevent the refrigerant abnormal noise when the HEATING operation is OFF or switched to other operation modes.
  • Page 13 2. AIR FLOW DIRECTION CONTROL This function is to swing the louver up and down automatically and to set it at a desired position. The procedure is as following. Press the ON/OFF button to operate the appliance. The louver will swing automatically to the default position.
  • Page 14 R O O M T E M P . S E T T E M P . + 1 ¡ æ ( C O M P . O N ) S E T T E M P . - 1 ¡ æ ( C O M P .
  • Page 15 tion diagram is shown as following. M ore than 3 m ins Set Temp +1 S E T T E M P . + 4 . 5 ¡ æ (Comp Off) ( C O M P . O F F ) S E T T E M P .
  • Page 16 The indoor fan motor speed will be controlled as following. (for 24K heat pump) 7. SMART MODE OPERATION When SMART air conditioning is selected, the operation mode and preset temperature are set automatically according to the room temperature at starting operation.
  • Page 17 Intake air temperature at Over 26 C ~ 26 Below 21 operation start Preset temperature Intake air temperature at operation start Operation mode COOLING HEATING The initial mode will be continued and independent upon the room temperature changing. If initial mode is selected, that mode is continued, independent upon the temperature changing.
  • Page 18 The operation procedure of HEATING is as following. Intake air tem p . Set tem p. Set tem p.-1¡æ Set tem p.-2¡æ Set tem p.-3¡æ Intake air tem p . I ndoor fan I ndoor fan H igh M e d i u m H igh M e d i u m L o w...
  • Page 19 10. EMERGENT START If you lose the remote controller or it is out of work, you can also operate the appliance by pressing the EMERGENT BUTTON on the indoor unit for an emergent start. The operation mode is SMART if an emergent start is presented when the appliance is connected to the power at first time.
  • Page 20 Preventive System. The HEATING and defrosting operation is alternated as following. S w itch O N Heating Heating Heating M in 50 m i ns M in 50 m i ns M in 50 m i ns D e frosting M a x 1 0 m i ns The defrosting procedure is shown as following.
  • Page 21 13. TIMER MODE OPERATION The setting time ranges from 0.5 hour to 24 hours. OFF-TIMER can be set when the appliance is in operation, and it will be switched OFF when the preset time is achieved. ON-TIMER can be set when the appliance is in suspension, and it will be switched ON when the preset time is achieved.
  • Page 22 stop in 8 hours. The operation diagram is as following. Max 8 hours 1 h o u r 1 ¡ æ 2 ¡ æ 3 ¡ æ 2 hours 3 hours S leep start S leep stop CHAPTER 7: INSTALLATION Notice: There is detailed information about installation in the OPERATING AND INSTALLATION INSTRUCTIONS MANUAL.
  • Page 23 2. DRILL THE PIPING HOLE WITH 70mm DIAMETER HOLE-CORE DRILL Line according to the arrows marked on the lower left and right side of the i n - stallation plate. The meeting point of the extended line is the center of the hole. Drill the piping hole at either the right or the left and the hole should be slightly slant to the outdoor side.
  • Page 24 F Cut the cable a 1.5m longer than the pipe length. Model No: AC-S10CK_S10HK Version 1.0...
  • Page 25 2) Remove burrs F Remove burrs from cut edges of pipes. F Turn the pipe end down to avoid the metal powder entering the pipe. F Caution: If the burrs are not removed, they may cause a gas leakage. Model No: AC -S10CK_S10HK Version 1.0...
  • Page 26 3) Flaring the pipes F Insert the flare nuts, mounted on the connection ports of both indoor and outdoor units, onto the copper pipes. Some refrigerant gas may leak, when the flare nuts are removed from the indoor unit, as some gas is charged to prevent the inside of the pipe from rusting.
  • Page 27 Pipe Size Torque Liquid Side(φ6 or 1/4 inch) 1.8 kg.m Liquid Side (φ10 or 3/8 inch) 3.5 kg.m Liquid Side(φ12 or 1/2 inch) 5.5 kg.m Gas Side (φ10 or 3/8 inch) 3.5 kg.m Gas Side(φ12 or 1/2 inch) 5.5 kg.m Gas Side(φ16 or 5/8 inch) 7.5 kg.m Gas Side(φ19 or 3/4 inch)
  • Page 28 When tightening the flare nut with torque wrench, ensure the direction for tight- ening follows the arrows on the wrench. Pipe Size Torque Liquid Side(φ6 or 1/4 inch) 1.8 kg.m Liquid Side (φ10 or 3/8 inch) 3.5 kg.m Liquid Side(φ12 or 1/2 inch) 5.5 kg.m Gas Side (φ10 or 3/8 inch) 3.5 kg.m...
  • Page 29 5. CHECKING THE DRAINAGE AND CONNECTING THE CABLE TO INDOOR UNIT Checking the drainage 1) Remove the grille from the cabinet F Set the up-and-down air direction louver to open position(horizontally) by finger pressure. F Remove the screw caps and the securing screws. To remove the grille, pull the lower left and right side of the grille toward you (slightly titled) and lift it straight upward(Two tabs on the top inside edge of the grille are clear of their slots).
  • Page 30 F If you may connect an additional drainage hose, the end of the drainage-outlet should keep distance from the ground.(Do not dip it into water, and fix it on the wall to avoid swinging in the wind.) In case of the outdoor unit is installed below position of the indoor unit. F Tape the piping, drainage hose and connecting cable from down to up.
  • Page 31 In case of the outdoor unit is installed upper position of the indoor unit. F Tape the piping and connecting cable from down to up. F Form the piping gathered by taping along the exterior wall and the trap is re- quired to prevent water from entering into the room.
  • Page 32 Leakage checking F Check a gas-leakage of the connection portion of the piping. F If there is no leakage found, open 2 -way again, turn the valve spindle coun- ter-clockwise until it stops. If there is leakage found, re-tighten the connecting portion with wrench. If the leakage persists, locate a leakage and repair it until leakage ceases.
  • Page 33 Set the both 2-way and 3-way valves to open position with the hexagonal wrench for the unit operation. Checking a gas leakage for the left piping F connect the manifold gauge to the service port of 3 -way valve. Measure the pressure.
  • Page 34 CHAPTER 8: 2-WAY, 3-WAY VALVE 2-way Valve(Liquid Side) 3-way Valve(Gas Side) Works Spindle position Spindle position Service port Closed Closed Closed Shipping (with valve cap) (with valve cap) (with cap) Air purging Open Closed Open (Installation) (counter-clockwise) (clockwise) (push-pin) Open Open Closed Operation...
  • Page 35 1. AIR PURGING (INSTALLATION) Required tools: hexagonal wrench, adjustable wrench, torque wrenches, wrench to hold the joints, and gas leak detector. The additional gas for air purging has been charged in the outdoor unit. However, if the flare connections have not been done correctly and gas leaks, a gas cylin- der and the charge set will be needed.
  • Page 36 Check the flare connections for refrigerant gas leakage. F Purge the air from the system. Set the 2 -way valve to the open position and remove the cap from the 3-way valve’s service port. Using the hexagonal wrench to press the valve core pin, discharge for three seconds and then wait for one minute.
  • Page 37 Confirm that both the 2-way and 3-way valves are set to the open position. F Remove the valve caps and confirm that the valve spindles are in the open position. F Be sure to use a hexagonal wrench to operate the valve spindle. Operate the unit for 10~15 minutes.
  • Page 38 closing it for 1 minute. Repeat 3 times. F After purging the air, use a torque wrench to tighten the flare nut on the 2-way valve. Check the flare connections for gas leakage. Disconnect the charge set and the gas cylinder, and set the 2-way and 3-way valves to the open position.
  • Page 39 F Leave the valve on the charge set closed. Connect the charge hose with the push pin to the service port. Open the valve (Low side)on the charge set and discharged the refrigerant until the gauge indicates 0kg/cm F If there is no air in the refrigerant cycle (the pressure when the air conditioner is not running is higher than 1 kg/cm .g),discharge the refrigerant until the gauge indicates 0.5 to 1 kg/cm...
  • Page 40 Close the valve (Low side) on the charge set, turn off the vacuum pump, and confirm that the gauge needle does not move (approximately 5 minutes after turning off the vacuum pump). Disconnect the charge hose from the vacuum pump. F If the vacuum pump oil becomes dirty or depleted, replenish as needed.
  • Page 41 refrigerant. F If the system can not be charged with the specified amount of refrigerant, it can be charged with a little at a time (approximately 150g each time) while operating the air conditioner in the cooling cycle. However, one time is not sufficient, wait approximately 1 minute and then repeat the procedure (pumping down pin).
  • Page 42 CHAPTER 9: TROUBLESHOOTING 1. REFRIGERATION CYCLE SYSTEM In order to diagnose malfunctions, make sure that there is no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient thermal insulation, problem with the power supply, malfunction of a compressor and indoor or outdoor fan motor.
  • Page 43 2. RELATION BETWEEN THE CONDITION OF THE AIR CONDITIONER AND PRESSURE AND ELECTRIC CURRENT IN COOLING OPERATION Carry out the measurements of pressure, electric current and temperature fifteen minutes after an operation is started. Electric current during Condition of the air conditioner Lower pressure High pressure operation...
  • Page 44 4. TROUBLE SUSPENSION TABLE SYMPTON PROBABLE CAUSE CORRECTIVE ACTION The power source voltage is Repair the power supply lower than 198V No voltage Repair general wiring The RUN indicator Replace control P.C.B or (green)does not light up Correct voltage display P.C.B The remote controller Reload new batteries batteries are used up...
  • Page 45 SYMPTON PROBABLE CAUSE CORRECTIVE ACTION The refrigeration Check for leakage or restriction Repair refrigeration system and system does not with ammeter, pressure gauge charge refrigerant if necessary function correctly or surface thermometer something wrong with power Replace control P.C.B No cooling or P.C.B heating, only Outdoor fan motor faulty or other...
  • Page 46 The machine does not function at all with remote controller and EMERGENCY button on the indoor unit. Correct power supply between “L” and “N” of terminal board? None of the three LEDs is ON Measure the secondary voltage of transformer Is the connecting cord correctly connected?
  • Page 47 The machine does not function with the remote controller. Push the ON/OFF button on the wireless remote controller. Are batteries of remote controller proper? Is transmitting signal of the remote controller active? Replace the wireless remote controller. Does beep sound Replace the batteries from the indoor with new ones.
  • Page 48 The room is not cooled at all or not cooled enough in cooling operation. The room is not heated at all or not heated enough in heating operation. The compressor does not operate. Push the buttons EMERGENCY on the indoor unit. Refer to Trouble Suspension Table Measure the resistances of room temperature and indoor pipe temperature thermisters.
  • Page 49 CHAPTER 10: EXPLODED DRAWINGS 1. Exploded view of indoor unit for model: AC -S10CK, AC -S10HK Model No: AC-S10CK_S10HK Version 1.0...
  • Page 50 2. Exploded view of outdoor unit for model: AC -S10CK Model No: AC-S10CK_S10HK Version 1.0...
  • Page 51 3. Exploded view of outdoor unit for model: AC -S10HK Model No: AC-S10CK_S10HK Version 1.0...
  • Page 52 CHAPTER 11: PART LIST 1. Part List of Indoor Unit for AC-S10CK DESCRIPTION Part No. Q’ty Installation Plate 1101297 Chassis 1002110 Indoor Fan 1402283 Bearing 120268 Evaporator Assembly 8130118 Cabinet 2107261 Air Filter 1306145 Front Cover 8100636 Safety Cover 2109232...
  • Page 53 3. Part List of Indoor Unit for AC-S10HK DESCRIPTION Part No. Q’ty Installation Plate 1101297 Chassis 1002110 Indoor Fan 1402283 Bearing 120268 Evaporator Assembly 8130118 Cabinet 2107261 Air Filter 1306145 Front Cover 8100636 Safety Cover 2109232 Bearing Support 100251 Left Louver Link 1201291 Vertical Deflector A 1201288...
  • Page 54 5 54 5. Part List of Outdoor Unit for AC-S10CK DESCRIPTION Part No. Q’ty Top Cover 810136 Condenser 8130230 Motor Stay Bracket 811022 Outdoor Fan Motor 1402371 Outdoor Fan 1402181 Cabinet 810065 Fan Guard 821072 Back Lattice Plate Electrical Assembly...
  • Page 55 6. Part List of Outdoor Unit for AC-S10HK DESCRIPTION Part No. Q’ty Top Cover 810136 Condenser 813028 Motor Stay Bracket 811022 Outdoor Fan Motor 1402371 Outdoor Fan 1402181 Cabinet 810068 Fan Guard 821072 Back Lattice Plate 810093 Electrical Assembly 8140117 Electrical Assembly Plate 821022 Electrical Assembly Seal...
  • Page 56 APPENDIX A APPENDIX A Description Singapore / AKIRA Singapore / AKIRA Akira Model No. AC-S7CK AC-S7HK AC-S10CK AC-S10HK AC-S13CK AC-S13HK AC-S19CK AC-S19HK AC-S24CK AC-S24HK Type (Cool only / Heat Pump) 7000 10000 13000 19000 24000 Cooling Capacity (Btu) Heating Capacity (Btu)

This manual is also suitable for:

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