Akai MWF-18CRN1-QC1G Instruction Manual Download Page 30 | Manualshive

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After Sales Support 1300 886 649

In general, possible trouble is classified in three kinds. One is called Starting

Failure which is caused from an electrical defect, another is ineffective Air

Conditioning caused by a defect in the refrigeration circuit and improper

application, and the other is called the Structure Damage.

10 Troubleshooting

Operation panel doesn't work.

Check the power supply.

Press the "LED" button of remote controller several times

and check whether the problem is settled down.

Check the wiring of display board.

Repair the wiring.

Replace the display board.

Replace the main control board.

No

No

No

Yes

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Summary of Contents for MWF-18CRN1-QC1G

Page 1: ...After Sales Support TEL 1300 886 649 Window or Wall Mounted Air Conditioner Cooling only Instruction manual Model Number MWF 18CRN1 QC1G FOR THE INSTALLER INSTALLATION AND SERVICE ...

Page 2: ...tion 3 2 Features and panel 6 3 Unit dimension 7 4 Disassembly instructions 15 5 Installation 21 6 Refrigerant cycle diagram 22 7 Operation limits 23 8 Wiring diagram 27 9 Protection function 29 10 Troubleshooting 38 11 Characteristic of temperature sensor ...

Page 3: ...ing the power plug Use a dedicated power outlet for this appliance Grasp the plug to remove the cord from the outlet Do not touch it with wet hands Do not place a heater or other appliance near the power cable Do not allow water to run into electrical parts Do not store or use flammable gas or combustibles near the air conditioner Unplugging the unit if strange sounds odours or smoke comes from it...

Page 4: ...reezed on evaporator by sensing the evaporator pipe temperature in cooling mode Time Delay Safety Restarting is for approx 3 minutes Anti cold function Prevent the cold wind at the beginning of unit start Auto restart When the power supply is interrupted and then restore the air conditioners automatically restore the previous function setting Auto mode in heating mode The mode can be changed by th...

Page 5: ...4 After Sales Support 1300 886 649 Capacity 9000Btu h F Panel Capacity 9000Btu h E1 Panel Capacity 9000Btu h E1 Panel ...

Page 6: ...of the units Press the keyboard to increase the set operating temperature of the units 2 2 6 Fan Press the fan keyboard to activate the appropriate fan speed setting 2 2 7 Swing Press the swing keyboard to activate the automatic air swing oscillation feature Press the swing keyboard for 2 seconds available for mwh f 07c h r qb8 will activate the sleep mode which can reduce noise creating a comfort...

Page 7: ... mm C mm MWF 05CRN1 QC1G 346 450 535 MWF 07CRN1 QC1G MWF 07HRN1 QC1G MWF 09CRN1 QC1G 380 600 560 MWF 09HRN1 QC1G MWF1 12CRN1 QC1G MWF 12HRN1 QC1G 430 660 687 MWF 16CRN1 QC1G MWF 16HRN1 QC1G MWF 18CRN1 QC1G MWF 18HRN1 QC1G 430 660 770 MWF 21CRN1 QC1G MWF 21HRN1 QC1G ...

Page 8: ...nd move the unit to open place 4 2 How to disassemble front panel You should unplug the power cord see 1 step First pull the front panel from bottom side Second open left and right side slots lift the front panel up at the same time 4 Disassembly instructions slot ...

Page 9: ...nt panel see 2 step Pull the knob to remove the filter 4 4 How to disassemble front panel 4 4 1 You should unplug the power cord see 1 step 4 4 2 You should disassemble the front panel see 2 step 4 4 3 You should remove the filter see 3 step First remove the two screws as following pictures Second unplug the plug connecting with display PCB knob plug ...

Page 10: ... power cord see 1 step 4 5 2 You should disassemble the front panel see 2 step 4 5 3 You should remove the filter see 3 step 4 5 4 You should disassemble the front frame see 4 step First remove left and right screws 2 and back screws 2 as following pictures Second pull the refrigerant system with grip as following grip ...

Page 11: ...semble the front panel see 2 step 4 6 3 You should remove the filter see 3 step 4 6 4 You should disassemble the front frame see 4 step 4 6 5 You should pull the refrigerant system from unit cabinet see 5step First remove the 2 screws take off the Electrical Box side cover Second disjoin the vertical louver out of the step motor axis and pull it out ...

Page 12: ...es Support 1300 886 649 Third snip the tighten strip as following and pull the Electrical Box Fourth remove the Electrical Box s front plastic cover Fifth remove the screws and open the Electrical Box Tighten strip ...

Page 13: ...anel see 2 step 4 7 3 You should remove the filter see 3 step 4 7 4 You should disassemble the front frame see 4 step 4 7 5 You should pull the refrigerant system from unit cabinet see 5 step First remove the four screws and evaporator disassemble the screw of centrifugal fan Second remove the 2 screws as following disassemble the air inlet cover and take off centrifugal fan ...

Page 14: ...uld remove the filter see 3 step 4 8 4 You should disassemble the front frame see 4 step 4 8 5 You should pull the refrigerant system from unit cabinet see 5 step First remove the 4 screws as following and remove the reinforce plate Second remove the screws which fix the left condenser s bracket and right condenser s bracket with rear boarding Third remove the screws which fix the condenser with c...

Page 15: ...You should remove the filter see 3 step 4 9 4 You should disassemble the front frame see 4 step 4 9 5 You should pull the refrigerant system from cabinet see 5 step 4 9 6 You should disassemble the Electrical Box see 6 step 4 9 7 You should disassemble the indoor centrifugal fan see 7 step 4 9 8 You should disassemble the outdoor axial fan see 8 step Remove 4 screws which fix fan motor with it s h...

Page 16: ...the ambient because it will prevent heat radiation of the condenser 4 Restriction of outside air will greatly reduce the cooling and heating efficiency of the air conditioner 5 Install the unit on a slight angle so that an condensate formed will not enter the room about 10mm or 1 4 bubble with level 6 Install the unit with its bottom portion 75 150cm above the floor level 7 The power cord must be ...

Page 17: ...d placing furniture of draperies in front of the air inlet and outlet 5 3 How to drain The base pan may overflow due to high humidity To drain the excess water remove the drain cap from the bottom of the unit if fitted and attach a drain hose not supplied 1 Take the drain pan which is packed with the unit 2 Remove the rubber plug from the bottom of the base pan if fitted 3 Install the drain pan ov...

Page 18: ...l supported the top has minimum clearance and the air inlet louvers have clearance as shown below in options A and B Holes from the outside through to the cavity should be sealed The housing should slope down towards the rear b about 5mm to allow water formed during operation to drain Step3 Install the housing into the wall and secure Ensure the foam seals are not damaged Flash seal or fill gaps a...

Page 19: ... position excess cord length beneath the air conditioner base Engage the chassis fixing brackets into the bottom housing rail and secure to the base with the screw provided Remove the front panel from it s carton and plastic bag and fit as per the installation instruction Switch unit on Check for operation of the unit and check for vibration in the installation Fit the drain pan to the housing and...

Page 20: ...me See Fig 4 Step 3 Installation For 9000Btu h models remove the two fixing screws on the chassis fixing brackets then remove the chassis fixing bracket For 9000Btu h modes remove the front two screws only Then remove the four screws located on both sides and back sides of the cabinet See Fig 5 Grasp the handle on the chassis and carefully slide the air conditioner out of the cabinet See Fig 6 Rem...

Page 21: ...mperature sensor cable See Fig 9 Fix the screws on the frame See Fig 3 Step 5 Install the air filter and front panel Install the air filter into the frame s slot from upside to underside See Fig 2 Hang the front panel on the frame s buckle then press the front panel into the frame s slot until you hear a click See Fig10 ...

Page 22: ...low is a brief description of the important components and their function in what is called the refrigeration system This will help to understand the refrigeration cycle and the flow of the refrigerant in the cooling cycle 6 Refrigerant cycle diagram ...

Page 23: ...649 7 1 Cooling operation Outdoor air temp C DB Indoor air temp C DB Note The chart is the result from the continuous operation under constant air temperature conditions However excludes the initial pull down stage 7 Operation limits ...

Page 24: ...23 After Sales Support 1300 886 649 8 1 MWF 05CRN1 QC1G MWF 07CRN1 QC1G 8 2 MWF 07HRN1 QC1G 8 Wiring diagram ...

Page 25: ...24 After Sales Support 1300 886 649 8 3 MWF 09CRN1 QC1G MWF1 12CRN1 QC1G MWF 16CRN1 QC1G MWF 18CRN1 QC1G 8 4 MWF 09HRN1 QC1G MWF 12HRN1 QC1G ...

Page 26: ...25 After Sales Support 1300 886 649 8 5 MWF 16HRN1 QC1G 8 6 MWF 18HRN1 QC1G ...

Page 27: ...26 After Sales Support 1300 886 649 8 7 MWF 21CRN1 QC1G 8 8 MWF 21HRN1 QC1G ...

Page 28: ...mpressor which is continuously running has got to 105 minutes with fan motor operating under Med or Low speed and the indoor ambient temperature lower than 26 C the anti freezing function will be activated The compressor will keep off for 3 minutes Note If the compressor stops operation the time will be cleared If the fan motor turns to High speed or the indoor ambient temperature gets over 26 C t...

Page 29: ...the defrosting time gets to 10 minutes the function will be cancelled After that the compressor will shut down immediately with the fan motor starts 35 seconds later the reverse valve will be ON and the compressor will be ON after another 3 seconds 9 2 5 Temperature sensor is open circuit or short circuit Defect code Defect explanation Er Indoor ambient temperature sensor failure En Evaporator pip...

Page 30: ...used by a defect in the refrigeration circuit and improper application and the other is called the Structure Damage 10 Troubleshooting Operation panel doesn t work Check the power supply Press the LED button of remote controller several times and check whether the problem is settled down Check the wiring of display board Repair the wiring Replace the display board Replace the main control board No...

Page 31: ...rature is too low Check whether there is too much water on the chassis Check whether the indoor air inlet is blocked Check whether the indoor dust filter is too dirty Check the wiring of pipe temperature sensor Check the pipe temperature sensor Replace the pipe temperature sensor Replace the main control board No No No No No No No Yes ...

Page 32: ...k whether the relay of compressor in PCB works normally Start the unit after 3mins and set the unit with cool mode and 17 C 62 F Then check the output of relay and replace the PCB if failed Check whether the external protector works normally Remove the overload protector and cool to normal temperature Then check whether it is open circuit Replace if failed Comparing with compressor specification c...

Page 33: ...e the PCB Replace the capillary Check the setting temperature Check the wiring Start the unit with cool mode and check whether the temperature of compressor s discharge pipe is smaller than 90 C If no recharge refrigerant Check whether the transformer is failed Measure the output voltage of transformer and check whether it is the range from 5V to 12V If not replace the transformer No No No No No N...

Page 34: ...ther the airflow passage is blocked Check whether capacitor of compressor work normally Replace the PCB Check whether the fan motor doesn t work Check whether the capillary is blocked Replace the capillary Replace the compressor Check whether the relay of compressor on PCB works normally No ...

Page 35: ... base is damaged Check whether the indoor outlet airflow foam is too wet and louver drip Check whether the drain passage of evaporator is blocked Replace if failed Check whether the air outlet foam install normally Fan motor speed can t change Check the wiring Replace the PCB Check the capacitor of fan motor Replace if failed Check the resistance of fan motor and replace the motor if failed ...

Page 36: ...35 After Sales Support 1300 886 649 ...

Page 37: ...36 After Sales Support 1300 886 649 Insufficient cooling ...

Page 38: ...37 After Sales Support 1300 886 649 ...

Page 39: ...38 After Sales Support 1300 886 649 11 Characteristic of temperature sensor ...

Page 40: ...300 886 649 Tempo Aust Pty Ltd ABN 70 106 100 252 AKAI Authorised Distributor PO Box 6056 Frenchs Forest NSW 2086 Customer Help Line 1300 886 649 AU 0800 836 761 NZ Email info tempoaustralia com au www tempoaustralia com au ...

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