All Easy 3D Inverter Series Service Manual 2015 AESFI-A-1509
CONTENTS 1. Precaution .................................................................................................................................................... 3 1.1 Safety Precaution .......................................................................................................................... 3 1.2 Warning ......................................................................................................................................... 3 2. Function ..........................
Sharp edges could cause injury, be especially careful of the case edges and the fins on the condenser and evaporator. For installation, always contact the dealer or an authorized service center. Do not install the product on a defective installation stand. Be sure the installation area does not deteriorate with age. If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.
A bad connection may cause water leakage. Keep level even when installing the product. It can avoid vibration of water leakage. Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods. It may cause a problem for your neighbors. Use two or more people to lift and transport the product. Do not install the product where it will be exposed to sea wind (salt spray) directly. It may cause corrosion on the product.
is operated. Do not drink the water drained from the product. Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury. Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries. There is risk of fire or explosion. Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire. They may burn of explode.
2.
3. Dimension 3.
For MSAEAU-09HRFN1-QRD0GW, 8
For MSAEBU-12HRFN1-QRD0GW, For MSAECU-18HRFN1-QRD0GW, 9
For MSAEDU-24HRFN1-QRD0GW, 10
3.
For MOBA31-09HFN1-QRDOGW, H 12 555 779 W3 487 W1 300 D 770 W 70 W2 286 322 D2 D3 298 90 B2 25 B1 H2 R6 60 93 61.
For MOB31-12HFN1-QRD0GW, MOB31-18HFN1-QRD0GW， H 12.0 554 815 W3 514 W1 333 D 800 W 70 W2 365 85.5 60 311 D2 D3 340 106 B2 62 B1 H1 H2 R2 0 20 A1 R6 61.
For MOCA30-24HFN1-QRD0GW, 14
4 .Refrigerant Cycle Diagram INDOOR OUTDOOR CHECK VALVE (Heating Model only) LIQUID SIDE 2-WAY VALVE CAPILIARY TUBE HEAT EXCHANGE (EVAPORATOR) HEAT EXCHANGE (CONDENSER) T1 Room temp. sensor T2 Evaporator temp.
5 .Installation Details 5.1 Wrench torque sheet for installation Outside diameter Torque Additional tightening torque mm inch N.cm N.cm Ф6.35 1/4 1500(153kgf.cm) 1600(163kgf.cm) Ф9.52 3/8 2500(255kgf.cm) 2600(265kgf.cm) Ф12.7 1/2 3500(357kgf.cm) 3600(367kgf.cm) Ф15.9 5/8 4500(459kgf.cm) 4700(479kgf.cm) Ф19 3/4 6500(663kgf.cm) 6700(683kgf.cm) 5.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet.
5.3 Pipe length and the elevation The pipe length and refrigerant amount: Pipe size Model MSAEAU-09HRFN1-QRD0GW + MOBA31-09HFN1-QRDOGW MSAEBU-12HRFN1-QRD0GW + MOB31-12HFN1-QRD0GW MSAECU-18HRFN1-QRD0GW + MOB31-18HFN1-QRD0GW MSAEDU-24HRFN1-QRD0GW + MOCA30-24HFN1-QRD0GW Gas Liquid 3/8’’ 1/4’’ (Ф9.52) (Ф6.35) 3/8’’ 1/4’’ (Ф9.52) (Ф6.35) 1/2’’ 1/4’’ (Ф12.7) (Ф6.35) 5/8’’ 3/8’’ (Ф15.9) (Ф9.52) Standard Max. Max.
connection to the vacuum pump. 4) Fully open the handle Lo of the manifold valve. 5) Operate the vacuum pump to evacuate. 6) Make evacuation for 30 minutes and check whether the compound meter indicates -0.1Mpa. If the meter does not indicate -0.1Mpa after pumping 30 minutes, it should be pumped 20 minutes more. If the pressure can’t achieve -0.1Mpa after pumping 50 minutes, please check if there are some leakage points.
3). Air purging. Open the valves on the charging cylinder and the charge set. Purge the air by loosening the flare nut on the 2-way valve approximately 45’ for 3 seconds then closing it for 1 minute; repeat 3 times. After purging the air, use a torque wrench to tighten the flare nut on the 2-way valve. 4). Check the gas leakage. Check the flare connections for gas leakage. 5). Discharge the refrigerant.
purge the air (be careful of the liquid refrigerant). 3) Put the charging cylinder onto the electronic scale and record the weight. 4) Operate the air conditioner at the cooling mode. 5) Open the valves (Low side) on the charge set and charge the system with liquid refrigerant. 6).
discharge the refrigerant by loosening the flare nut on the 2-way valve approximately 45’ until the gauge indicates 0.3 to 0.5 Mpa. 6). Disconnect the charge set and the charging cylinder, and set the 2-way and 3-way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems. 7). Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N.m. Be sure to check the gas leakage. Procedure: 1).
cap to a torque of 18N.m.
6. Disassemble Guide 6.1 How to Remove the filter Step1: Put your hands at A and B, lift the filter a little to loosen the fastener Step2: Pull the filter gently along the horizontal direction. Step3: Pull out the filter. 6.2 How to Remove the horizontal louver Step1: Open the horizontal louver ,push the locker towards right to open it. Step2: Bend the horizontal louver lightly, remove it from the indoor unit.
6.3 How to hold the indoor for piping connection Step1: Open the screw caps A and B, remove the two screws. Step2: Open the panel assembly, move the slider to fix the panel.
6.4 How to Remove the panel assembly Step1: Open the screw caps A and B, remove the two screws. Step2: Open the panel assembly, loosen the display board connector. Step3: Pull the panel assembly along the direction indicated in right image to remove it.
6.5 How to Remove the PCB Step1: Press A to remove the terminal cover. Step2: Remove screw B to remove the cover of the electronic control box . Step3: Then you can remove the PCB. Note: It is not necessary to remove the panel to remove the PCB. in order to show clearly inside, these pictures are without panel. 6.6 How to Remove the Electrical control box Step1: Remove screw A,B,C, pull out the coil temp. sensor D from the sensor holders. Step2: pull out the Electrical control box.
6.7 How to Remove the Chassis assembly CAUTION: Because the 24K indoor unit is relatively large and heavy, it must have two persons to implement the following steps. Step1: Remove the left and right pipe cover. Step2: Remove the 5 screws A,B,C,D,E remove support part F and G. Note: Screw E is behind the E-box by mistake for this sample, you need to remove screw X, to lift the E-box a little, Then you can remove the Screw E. This problem will be solved before mass-production.
6.8 How assembly to Remove the Evaporator CAUTION: Because the 24K indoor unit is relatively large and heavy, it must have two persons to implement the following steps. Step1: Remove the Electric control box. Step2: Remove the Chassis assembly Step3: Unfold the Pipe clamp board C, remove screw A and B. Step4: Pull out the evaporator.
7. Operation Characteristics Mode Cooling operation Heating operation Drying operation Room temperature 17℃~32℃ (62℉~90℉) 0℃~30℃ (32℉~86℉) 10℃~32℃ (50℉~90℉) Outdoor temperature 0℃~50℃ (32℉~122℉) -15℃~30℃ (5℉~86℉) 0℃~50℃ (32℉~122℉) Temperature -15℃~50℃ (5℉~122℉) (For the models with low temperature cooling system) CAUTION: 1. If the air conditioner is used beyond the above conditions, certain safety protection features may come into operation and cause the unit to operate abnormally. 2.
Dispalys ‘ 8. Electronic function ’ for three seconds when Fresh, Swing, Turbo or Silence feature is cancelled. 8.1 Abbreviation Dispalys ‘ T1: Indoor room temperature ’ under deforsting operation. T2: Coil temperature of evaporator Dispalys ‘ T3: Coil temperature of condenser activated under heating mode. T4: Outdoor ambient temperature Dispalys ‘ T5: Compressor discharge temperature ’ when anti-cold air feature is ’ during self clean operation (if aplicable). 8.
8.3 Main Protection This function is only active in cooling mode. It can better prevent the compressor being damaged by refrigerant leakage or compressor overload. Open condition: When compressor is active, the value of the Coil temperature of evaporator T2 has no change or very little change. 8.3.1 Three minutes delay at restart for compressor Less than 1 minute delay for the 1st time stand-up and 3 minutes delay for others. 8.3.
8.4 Operation Modes and Functions T4 A+ 8.4.1 Fan mode (1) Outdoor fan and compressor stop. (2) Temperature setting function is disabled, and no setting temperature is displayed. (3) Indoor fan can be set to high/med/low/auto. (4) The louver operates same as in cooling mode. (5) Auto fan: A B C D E T1 8.4.2.3Indoor fan running rules In cooling mode, indoor fan runs all the time and the speed can be selected as high, medium, low and auto. When the setting temp.
T3 T4 E Off D Decrease C B Hold A Increase A+ Resume When condenser temperature temp. is more than setting value, the compressor will stop. 8.4.3.3 Indoor fan running rules When the compressor is on, the indoor fan can be set to high/med/low/auto/mute. When indoor unit coil temp. is low, the anti-cold air function will start and indoor fan motor will run at low speed, the speed can’t be changed ,when the temp. is lower than setting value, the indoor fan motor will stop.
than the setting protection compressor will stop. T1-Td+ΔT value, the 8.4.4 Auto-mode This mode can be chosen with remote controller and the setting temperature can be changed between 17°C~30°C In auto mode, the machine will choose cooling, heating or fan-only mode according to ΔT (ΔT =T1-Ts). T1-Ts 8.4.3.4Defrosting mode AC will enter the defrosting mode according to the value of temp. of T3 and the value range of temp. change of T3 and also the compressor running time.
Forced auto mode: The action of forced auto mode is the same as normal auto mode with 24℃ setting temperature. When AC receives signals, such as switch on, switch off, timer on, timer off, mode setting, fan speed setting, sleeping mode setting, follow me setting, it will quit the forced operation. restarts. 8.4.9 Refrigerant Leakage Detection With this new technology, the display area will show “EC” when the outdoor unit detects refrigerant leakage. 8.4.
signal, but it will not affected by the setting temperature. 4) When the unit is running with follow me function, if the PCB doesn’t receive any signal from remote controller for 7 minutes or pressing FOLLOW ME button again, the follow me function will be turned off automatically, and the temperature will control the unit according to the room temperature detected from its own room temperature sensor and setting temperature. 8.4.
8.4.15 Point check function Press the LED DISPLAY or LED or MUTE button of the remote controller three times, and then press the AIR DIRECTION or SWING button three times in ten seconds, the buzzer will keep ring for two seconds. The air conditioner will enter into the information enquiry status. You can press the LED DISPLAY or AIR DIRECTION button to check the next or front item’s information within 27 seconds.
Reserve 4 Reserve 5 Reserve 6 Reserve L Reserve A Reserve U Reserve T Reserve A Reserve S Reserve T When the AC enter into the information enquiry status, it will display the code value in the next 25s, the details are as follows. Enquiry Display value Meaning Remark T1,T2,T3,T4, -1F,-1E,-1d,-1c,- -25,-24,-23,-22,-21,-2 1. All the displaying temperature is actual T2B,TP,TH, 1b,-1A 0 Targeted -19—99 -19—99 2.
compressor meaning, please stop. consult with engineer Reserve 0-FF Reserve 2~28 Reserve 5~20 Reserve 5~25 8.5 Multi-function board instruction (This multi-function board is optional) 8.5.1. Function The multi-function board receives the signal of 4-cored wired controller(central controller),Non-polar wired controller and CP remote on-off signal( ON-OFF command signal) . Then converting it to the communication signal to the main control board. The multi-function board can output Alarm signal.
8.5.4. 4-cored wired controller，Central controller and Non-polar wired controller Note: 4-cored wired controller，Central controller and Non-polar wired controller are mutually exclusive. They can only be chosen one of three at the same time. 8.5.4.1 For network address, Dip-switch F1 and Rotary switch ENC3 are set as below: Dip-switch 2 Dip-switch 1 Based address OFF OFF 0 OFF ON 16 ON OFF 32 ON ON 48 Note: The network address are the Dip-switch F1 address plus Rotary switch ENC3 address. 8.
Note: It must use shield cables to connect with 4-cored wired controller and Central controller. The length should not exceed 50m. 8.5.7.2 Connected to Non-poplar wired controller Note: It must use shield cables to connect with Non-poplar wired controller. The length should not exceed 50m.
9. Troubleshooting Safety Electricity power is still kept in capacitors even the power supply is shut off. Do not forget to discharge the electricity power in capacitor. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) For other models, please connect discharge resistance (approx.100Ω 40W) or soldering iron (plug) between +, terminals of the electrolytic capacitor on the contrary side of the outdoor PCB.
Note: The picture above is only for reference. The plug of your side may be different.
9.
9.2 Trouble shooting 9.2.1 EEPROM parameter error diagnosis and solution(E0/F4) Error Code E0/F4 Malfunction decision Indoor or outdoor PCB main chip does not receive feedback conditions from EEPROM chip. Supposed causes ● Installation mistake ● PCB faulty Trouble shooting: Power off, then restart the unit 2 minutes later. Yes Replace the indoor/outdoor main PCB. EEPROM: a read-only memory whose contents can be erased and reprogrammed using a pulsed voltage.
9.2.2 Indoor / outdoor unit’s communication diagnosis and solution(E1) Error Code E1 Malfunction decision Indoor unit does not receive the feedback from outdoor unit during conditions 110 seconds and this condition happens four times continuously.
Remark: Use a multi meter to test the resistance of the reactor which does not connect with capacitor. The normal value should be around zero ohm. Otherwise, the reactor must have malfunction and need to be replaced.
9.2.3 Fan speed has been out of control diagnosis and solution(E3) Error Code E3/F5 Malfunction decision When indoor fan speed keeps too low (300RPM) for certain time, conditions the unit will stop and the LED will display the failure. Supposed causes ● Wiring mistake ● Fan ass’y faulty ● Fan motor faulty ● PCB faulty Trouble shooting: Power off, then restart the unit 2 minutes later No The unit operates normally. No Find out the cause and have it solved No Correct the connections.
Index1: 1:Indoor or Outdoor DC Fan Motor(control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the value of the voltage is not in the range showing in below table, the PCB must has problems and need to be replaced. DC motor voltage input and output NO. Color Signal Voltage 1 Red Vs/Vm 280V~380V 2 --- --- --- 3 Black GND 0V 4 White Vcc 14-17.5V 5 Yellow Vsp 0~5.6V 6 Blue FG 14-17.5V 2.
9.2.4 Refrigerant Leakage Detection diagnosis and solution(EC) Error Code EC Malfunction decision Define the evaporator coil temp.T2 of the compressor just starts conditions running as Tcool. In the beginning 8 minutes after the compressor starts up, if T2 ＜Tcool－2℃ does not keep continuous 4 seconds and compressor running frequency higher than 50Hz does not keep continuous 3 minutes, and this situation happens 3 times, the display area will show “EC” and AC will turn off.
9.2.5 Open circuit or short circuit of temperature sensor diagnosis and solution(E5) Error Code E4/E5/F1/F2/F3 Malfunction decision If the sampling voltage is lower than 0.06V or higher than 4.94V, conditions the LED will display the failure. Supposed causes ● Wiring mistake ● Sensor faulty ● PCB faulty Trouble shooting: Check the connection between temperature sensor and PCB.
9.2.6 Overload current protection diagnosis and solution(F0) Error Code F0 Malfunction decision An abnormal current rise is detected by checking the specified conditions current detection circuit. Supposed causes ● Power supply problems. ● System blockage ● PCB faulty ● Wiring mistake ● Compressor malfunction Check the power supply No Stop the unit No Clear the blockage No Replace the compressor No Correct the connections or replace the wires.
9.2.7 IPM malfunction or IGBT over-strong current protection diagnosis and solution(P0) Error Code P0 Malfunction decision When the voltage signal that IPM send to compressor drive chip conditions is abnormal, the display LED will show “P0” and AC will turn off.
IPM continuity check Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure the resistance between P and UVWN; UVW and N.
9.2.8 Over voltage or too low voltage protection diagnosis and solution(P1) Error Code P1 Malfunction decision An abnormal voltage rise or drop is detected by checking the conditions specified voltage detection circuit. Supposed causes ● Power supply problems. ● System leakage or block ● PCB faulty Trouble shooting: Check the power supply No Stop the unit No Correct the connections or replace the wires.
9.2.9 High temperature protection of IPM or compress top diagnosis and solution (P2) Error Code P2 Malfunction decision If the sampling voltage is not 5V, the LED will display the failure. conditions Supposed causes ● Power supply problems.
High temperature protection of compressor top: Check the air flow system of indoor and outdoor units Yes Clear up the air inlet and outlet or the heat exchanger of indoor and outdoor units. No Power off, then restart the unit 10 minutes later Yes Check if the temperature of compressor No Check the overload protector No Correct the connection. No Replace the OLP. Yes Yes Check refrigerant system Measure the resistance between the two ports of the OLP.
9.2.10 Inverter compressor drive error diagnosis and solution(P4) Error Code P4 Malfunction decision An abnormal inverter compressor drive is detected by a special conditions detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on.
Main parts check 1. Temperature sensor checking Disconnect the temperature sensor from PCB, measure the resistance value with a tester. Temperature Sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor discharge temp.(T5) sensor. Measure the resistance value of each winding by using the multi-meter.
Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (°C--K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm -20 -4 115.266 20 68 12.6431 60 140 2.35774 100 212 0.62973 -19 -2 108.146 21 70 12.0561 61 142 2.27249 101 214 0.61148 -18 0 101.517 22 72 11.5 62 144 2.19073 102 216 0.59386 -17 1 96.3423 23 73 10.9731 63 145 2.11241 103 217 0.57683 -16 3 89.5865 24 75 10.4736 64 147 2.03732 104 219 0.56038 -15 5 84.
Appendix 2 Temperature Sensor Resistance Value Table for T5 (°C --K) °C °F K Ohm °C °F °C K Ohm °F K Ohm °C °F K Ohm -20 -4 542.7 20 68 68.66 60 140 13.59 100 212 3.702 -19 -2 511.9 21 70 65.62 61 142 13.11 101 214 3.595 -18 0 483 22 72 62.73 62 144 12.65 102 216 3.492 -17 1 455.9 23 73 59.98 63 145 12.21 103 217 3.392 -16 3 430.5 24 75 57.37 64 147 11.79 104 219 3.296 -15 5 406.7 25 77 54.89 65 149 11.38 105 221 3.
2.Compressor checking Measure the resistance value of each winding by using the tester. Position Blue - Red Blue - Black Red - Blue Resistance Value ASN98D22UFZ ASM135D23UFZ ATF235D22UMT 1.57Ω 1.75Ω 0.
