Friedrich MR09C1H Service Manual Download

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SPLIT TYPE ROOM AIR CONDITIONER
WALL MOUNTED TYPE

Models

Indoor Unit

Outdoor Unit

Service and Parts Manual

MW09C1H

MR09C1H

MW12C1H

MR12C1H

Summary of Contents for MR09C1H

Page 1: ...2 0 11 SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTED TYPE Models Indoor Unit Outdoor Unit Service and Parts Manual MW09C1H MR09C1H MW12C1H MR12C1H ...

Page 2: ...Unit 3 2OutdoorUnit 5 1ElectricalDate 8 Troubleshooting 9 1Precautions before Performing Inspection or Repair 9 2Confirmation Summary and features 2 4Operation Characteristic Curve n 2 5 Noise criteria curve tables for both models 9 3Judgement by Flashing LED of Indoor Outdoor Unit Model and product code 9 4How to Check simply the main part 5 2ElectricalWiring 5 3PrintedCircuitBoard 2 3 4 5 7 16 1...

Page 3: ...Model and product code Model and product code M09CIH 115V 60H W09CIH MR09CIH M12CH 115V 60H W12CIH MR12CIH Voltage range Complete unit model Indoor unit model Outdoor unit model M M zM zM 3 ...

Page 4: ...OutdoorUnit MR09CIH MR012CIH Remote control window YB1FAF Summary and features Summary and features 4 ...

Page 5: ...stant if possible Capacitors even when disconnected from the electrical power source retain an electrical charge potential capable of causing electric shock or electrocution Handle discharge and test capacitors according to safe established standards and approved procedures Extreme care proper judgment and safety procedures must be exercised if it becomes necessary to test or troubleshoot equipmen...

Page 6: ...ect contact with liquid refrigerant can result in minor to moderate injury Be extremely careful when using an oxy acetylene torch Direct contact with the torch s flame or hot surfaces can cause serious burns Make sure to protect personal and surrounding property with fire proof materials Have a fire extinguisher at hand while using a torch Provide adequate ventilation to vent off toxic fumes and w...

Page 7: ...eful when using acetylene torch and protect surrounding property Failure to follow these instructions can result in fire and minor to serious property damage WATER DAMAGE HAZARDS Improper installation maintenance or servicing of the air conditioner unit can result in water damage to personal items or property Insure that the unit has a sufficient pitch to the outside to allow water to drain from t...

Page 8: ... MW09CIH 0 6 2 1 n i m r H S 0 5 0 1 n i m r H 0 2 9 n i m r M 0 3 7 n i m r L 0 2 W 0 4 F A 0 38 Cross flow fan in 3 62 X 25 4 Aluminum fin copper tube in in 216 0 019 0 055 in 25 4 X 1 X 10 5 MP24AA 4 2 W A PCB 3 15A 4 3 A B d H 0 3 A B d M 6 2 A B d L 4 4 A B d H 0 4 A B d M 6 3 A B d L 33 3X10 8X11 36X10X14 16X24 3X130 9 lbs in in Power Input Inverter different Compressor speed Model Function ...

Page 9: ...H 0 2 9 n i m r M 0 3 7 n i m r L 0 2 W 0 1 F A 0 2 Cross flow fan in in in in 3 62X25 4 25 4X1X10 5 276 in 33 3X10 3X7 1 in 36X10X14 lbs 26 3 30 9 077 055 Aluminum fin copper tube MP24AA 4 2 W A PCB 3 15A 4 3 A B d H 0 3 A B d M 6 2 A B d L 4 4 A B d H 0 4 A B d M 6 3 A B d L Rated Input Rated Current Air Flow Volume Fan Motor Dehumidifying Volume EER C O P Indoor unit Speed SEER HSPF Net Weight ...

Page 10: ... i e W Factory Prescharge 25 33 66 Gas additional charge 02 H 33 Liquid Pipe Diameter mm Φ6 1 4 Gas Pipe Diameter mm Φ9 3 8 Manufacturer trademark Starting Method Type Defrosting Method Overload Protector Air Flow Volume of Outdoor Unit Outdoor Unit Compressor Fan Fan Motor Working Temp Range Heat Exchanger Coil Coil Model Coil length l x height H x coil width L Throttling Method Moisture Protecti...

Page 11: ...Factory Prescharge 25 33 66 Gas additional charge H 1 4 oz per ft Liquid Pipe Diameter mm Φ6 1 4 Gas Pipe Diameter mm Φ9 3 8 Manufacturer trademark Starting Method Type Defrosting Method Overload Protector Air Flow Volume of Outdoor Unit Outdoor Unit Compressor Fan Fan Motor Working Temp Range Heat Exchanger Coil Coil Model Coil length l x height H x coil width L Throttling Method Moisture Protect...

Page 12: ...path U bent Thermistor themometer 2 Connecting piping condition 7 6 m Compressor Frequency Hz Indoor Wet Bulb Temperature 20 40 60 80 100 120 140 110 130 15 35 55 75 95 59 F 68 F 77 F Compressor Frequency Hz Capacity Change Ratio Capacity Change Ratio Indoor Wet Bulb Temperature 20 40 60 80 100 120 140 110 130 15 35 55 75 95 59 F 60 8 F 62 6 F Rated Rated EVP F COD C Turbo Turbo Turbo High High Hi...

Page 13: ...atio 70 30 25 20 05 110 105 100 95 90 85 80 Maximum pipe length 20m Standard pipe length 7 6m Total pipe length m 01 5 110 105 100 95 90 85 80 Total Elevation m Maximum Elevation 7 6m Conditions Indoor air flow TURBO Conditions Indoor air flow TURBO 10 15 3 04 5 6 07 5 9 0 Specifications 90 97 93 100 108 104 113 102 111 106 115 91 99 95 Indoor DB80 F WB67 F Outdoor DB95 F WB75 F Indoor DB80 F WB67...

Page 14: ... Conditions Indoor air flow TURBO Pipe lengt 7 6m 115V g n i l o o C 01 02 03 04 05 06 07 09 0 80 25 0 22 5 20 0 17 5 15 0 12 5 10 0 7 5 5 0 2 5 0 Compressor speed rps 115V Conditions Indoor air flow TURBO Pipe length 7 6m 12Kof115VUnit s Specifications Indoor DB80 F WB67 F Outdoor DB95 F WB75 F Indoor DB80 F WB67 F Outdoor DB95 F WB75 F 14 12 btu unit 9 btu unit ...

Page 15: ...door side noise when blowing Outdoor side noise Indoor fan motor rotating speed Low MiddleH igh Compressor frequency Hz 35 25 Turbo Noise dB A Noise dB A Noise dB A Noise dB A 80 100 60 40 20 0 70 60 50 40 30 20 70 60 50 40 30 80 100 60 40 20 0 12KUnit s 09KUnit s Specifications 2 5 Noise criteria curve tables for both models 15 09 btu units 12 btu unit ...

Page 16: ...tion views W H D W2 D3 W3 D4 W4 D2 H2 0 9 K 1 2 K 9 6 1 2 4 5 5 3 1 Unit m m Additional Dimensions Cabinet Cabinet W H D W2 D4 H2 D2 D3 W4 W3 33 11 7 25 30 10 21 25 12 75 11 50 21 25 33 System Model Number Outdoor Unit mm Indoor Unit mm 5 1 4 6 3 4 21 16 09K 12K ...

Page 17: ...em Diagram T I N U R O O D T U O T I N U R O O D N I HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER COMPRESSOR GAS SIDE 3 WAY VALVE LIQUID SIDE 2 WAY VALVE COOLING Accumlator Discharge Suction Muffler r e n i a r t S r e n i a r t S Electric Expansion Valve 17 ...

Page 18: ...L OUT L1 L1 0 0 RT1 RT2 M2 JUMP CAP TEM SENSOR ROOM TUBE TEM SENSOR FAN MOTOR SWING MOTOR U D AP2 SWING UD K4 TUBE ROOM AC L PG PGF TR_OUT TR_IN TC TRANSFORMER 13 DISPLAY AP1 CN1 CN2 DISP 2 DISP 1 M1 G G XT1 W4 BU W3 BN N 1 OUTDOOR UNIT 2 3 COM OUT W1 YEGN W2 YEGN N W5 BK I II ELECTRIC BOX EVAPORATOR Symbol Parts name Symbol Color symbol L1 REACROR WH WHITE PCB1 PCB2 PRINTED CIRCUIT BOARD YE YELLO...

Page 19: ...E W7 BK AC N1 AC L1 COMU EKV CN1 TEM SENSOR OUTROOM EXHUAST TEM SENSOR TEM SENSOR TUBE W2BU W1 BN W4 BK G G I N D O O R U N I T W13 YEGN POWER N L L N N 1 3 2 L2 L2 L2 L1 L1 G G G W15 BU W14 BN W16 WH W17 RD G L4 L4 W23 OG W20 BU W22 WH W21 BN AC L2 AC L4 AC N5 AC N3AC N4 AC L2 AC L3 W19 BU W24 RD W18 YEGN XT2 3 4 E 2 1 FILTER C4 C3 2 1 2 1 Cooling Models of 115V 19 ...

Page 20: ...0 11 12 1 Interface of neutral wire 2 Transformer input 3 Interface of PG motor 4 Auto button 5 Feedback from PG motor 6 Up Down swing 7 Jumper cap 8 Indoor temperature sensor 9 Pipe temperature sensor 10 DISP 1 DISP 2 display interface 11 Protective tube 12 Communication interface 20 ...

Page 21: ...ve Terminal of jumper wire neutral wire Neutral wire terminal of 4 way valve Main relay Terminal of ground wire Slug of on off power High frequency transformer Stabilized voltage block 7805 IPM module Terminal of compressor overload protector Discharge terminal of compressor Outdoor ambient temperature sensor Terminal of outdoor pipe temperature Terminal of power lead in wire and live wire Protect...

Page 22: ...mer Press it to set clock Note Only name different between X FAN and BLOW but the function is the same Remote control works with cool and Heat Pump Models 22 MODE AUTO COOL DRY FAN HEAT setting P ress todecreasetemperature setting FA N Press it set swing angle TIMER ON TIMER OFF CLOCK TEMP TURBO SLEEP LIGHT Press it to set auto on timer Press it to set auto off timer Press it set clock 1 6 7 5 3 2...

Page 23: ...d Medium speed High speed OFF 1 2 3 4 5 6 After energization AUTO mode is defaulted In AUTO mode the set temperature will not be displayed on the LCD and the unit will automatically select the suitable operation mode in accordance with the room temperature to make indoor room comfortable increases set temperature In AUTO mode set temperature is not adjustable decreases set temperature In AUTO mode...

Page 24: ...ion press TIMER ON button TIMER OFF Press TIMER OFF button to set TIMER OFF The setting method is the same as TIMER ON Press CLOCK button the icon blinks During 5 seconds blinking pressing or button adjusts CLOCK preset time Holding down either button above 2 seconds increases or decreases the time by 1 minute every 0 5 second If you are still pressing the button after 10 minutes increased or decr...

Page 25: ...turns on off Turbo function After TURBO function is set its icon is displayed When switching operation mode or changing fan speed this function will be canceled automatically at super high fan speed This function is not applicable for some models Press SLEEP button into SLEEP operation Press SLEEP button again to cancel SLEEP This function only can be used in COOL HEAT applicable to heat pump unit...

Page 26: ...nual switch Fig 3 1 Remove the battery cover plate from the rear of the remote controller As shown in the figure 2 Take out the old batteries 3 Insert two new AAA1 5V dry batteries and pay attention to the polarity 4 Replace the battery cover plate Notes When changing the batteries do not use old or different batteries otherwise it may cause malfunction of the wireless remote control If the wirele...

Page 27: ...e reasons the indoor fan and the swing device will operate at original state Protection Antifreeze protection Under cooling and dry mode 6 minutes after the compressor is started If T evap 36 the compressor will operate at reduced frequency If T evap 30 is detected for durative 3 minutes the compressor will stop and after 30 seconds the outdoor fan will stop and under cooling mode the indoor fan a...

Page 28: ... be opened and after 60 seconds the compressor and the outdoor fan will be started the indoor fan will run under preset cold air prevention conditions and H1 will be displayed at temperature display area on the display panel Defrost frequency is 70Hz 3 Protection Cold air prevention The unit is started under heating mode the compressor is ON In the case of Tindoor amb 75 F speed with a time lag of...

Page 29: ... allowed c If T tube 136 F the compressor will r un at reduced frequency d If T tube 144 F the compressor will stop and the indoor fan will run at preset speed 2 Heating overload a If Ttube 106 F the unit will return to its original operation state b If T tube 131 F frequency rise is not allowed c If T tube 136 F the compressor will run at reduced frequency d If T tube 144 F the compressor will st...

Page 30: ...rature and wind speed c The setting temperature keeps the same under the FAN mode and AUTO mode 6 Indoor Fan Control The Indoor Fan can be set as HIGH MED LOW by remote controller and the Indoor Fan will be respectively run at high medium low speed It will also be set as AUTO and the Indoor Fan is as the following at the automatic fan speed Cooling mode T ring T setting 2 high speed Tsetting 2 T r...

Page 31: ...dule protection PH High voltage protection PL Low voltage protection P1 Nominal cooling and heating P2 Maximum cooling and heating P3 Medium cooling and heating P0 Minimum cooling and heating 12 Drying Function You may start or stop the dry function under the modes of cooling and dry at the starting status The modes of automatism heating and air supply do not have dry function When you start the d...

Page 32: ...ts difference from the frequency previously calculated 2 Icontrol If the operating frequency is not change more than a certain fixed time adjust the frequency up and down according to the D value obtaining the fixed D value When the D value is small lower the frequency When the D value is large increase the frequency 3 Frequency management when other controls are functioning When frequency is droo...

Page 33: ... rushes on the drooping zone without change In the keep zone the frequency limit will remain In the return reset zone the frequency limit will be cancelled Limitation of current drooping and stop value according to the outdoor air temperature 1 In case the operation mode is cooling The current droops when outdoor air temperature becomes higher than a certain level model by model 2 In case the oper...

Page 34: ...ignal from the indoor unit must be divided into the zones as the followings Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 sec from operation start Control in Each Zone A B C D E Return Reset zone Up zone Keep zone Drooping zone Stop zone Heat exchanger thermistor temperature Function and Control 34 ...

Page 35: ...ormal operation Detail Fan OFF Control when Stopped Fan OFF delay for 60 seconds must be made when the compressor is stopped Tap Control in indoor outdoor unit silent operation 1 When Cooling Operation When the outdoor air temperature is lower than 99 F the fan tap must be set to L 2 When Heating Operation When the outdoor air temperature is higher than 39 F the fan tap must be turned to L only fo...

Page 36: ... removing the unit to the other place please firstly contact with the authorized Maintenance Center in the local area Important Notices Basic Requirements For Installation Position Install in the following place may cause malfunction If it is unavoidable contact with service center please Place where strong heat sources vapors flammable gas or volatile object are emitted Place where high frequency...

Page 37: ...t 3mm in all poles should be connected in fixed wiring It should be reliably earthed and it should be connected to the special earth device the installation work should be operated by the professional The air switch must have the functions of magnetic tripping and heat tripping in order to protect the short circuit and overloading 6 5 The model and rating values for fuses according the silk print ...

Page 38: ...Air outlet side Space to the wall Air inlet side The dimensions of the space necessary for correct installation of the appliance including the minimum permissible distances to adjacent structures 7 2 Installation dimension diagram 12 in side 6 in side above 6 in to side 6 ft from bottom 10 ft from front 6 in to side 12 in side 12 in back 19 in top 7 ft front ...

Page 39: ...g Drain Hose Wrenched Bent Flooded Indoor Outdoor Wall pipe Seal pad Connecting Indoor and Outdoor Electric Wires 1 Make the piping hole 2 5 in in the wall at a slight downward slant to the outdoor side 2 Insert the piping hole sleeve into the hole to prevent the connection piping and wiring from being damaged when passing through the hole 1 For proper draining the drain hose should be placed at a...

Page 40: ...t pay attention to the piping bending do not damage the connection pipe ensure the joint nut is adequately tightened otherwise it may cause leakage Spanner Torque wrench Piping Taper nut Indoor unit piping Fig 9 Mounting plate Fixing hook Mounting plate Right Right rear Fig 8 Left rear Left Fig 7 Tailing 1 Tailing 2 Finally wrap it with tape Gas side piping insulation Water drainage pipe Liquid si...

Page 41: ...ooling and heating unit use the wire clamp to fix the power connection cable and the signal control wire then connect the corresponding Ensure wire has been fixed well Install the cable cross plate sub assy connector bank Wiring should fit that of indoor unit 5 Fig 1 Connect charging hose of manifold valve to charge end of low pressure valve both high low pressure valves must be tightly shut 2 Con...

Page 42: ...ameplate It may cause electric malfunction or damage the product Is the electric wiring and piping connection installed correctly and securely It may cause electric malfunction or damage the part Has the unit been connected to a secure ground connection It may cause electrical leakage Is the power cord specified It may cause electric malfunction or damage the part Are the inlet and outlet openings...

Page 43: ...tallation instruction but can t with brush or hard things After washing be sure to shake off remaining water and dry in the shade The healthy filter commonly has its usage life time for one year under normal condition As for silver ion filter it is invalid when its surface becomes black green This supplementary instruction is provided for reference to the unit with healthy filter If the graphics p...

Page 44: ...embly in a vertical position Normally diagnose troubles according to the trouble diagnosis procedure as described below Refer to the check points in servicing written on the wiring diagrams attached to the indoor outdoor units No Troubleshooting procedure 1 Confirmation 2 Judgement by Flashing LED of Indoor Outdoor Unit 3 How to Check simply the main part Precautions when inspecting the control se...

Page 45: ... sound and the remote startup has no response The remote contro ller signals after it is powered the buzzer will sound unless it has malfunction The circuit or the part of the air conditioner has malfunction They heat and break the insulation and lead to short circuit or creepage Measure the insulation resistance or eliminate the malfunc tion one by one If the breaker itself has malfunction then r...

Page 46: ... thin pipes is good Heat insulation must also be provided for the joint andthe exposed part of the copper pipe Block of outdoor heat ex changer Clean the dust accumulated on the surface of the heat exchanger Air filter were blocked Clean the filter Fan speed was set too slow To set the fan speed to high or middle speed Air circulation is insufficient Fan rotation speed becomes low Capacitor damage...

Page 47: ...f compressor Replace the capacitor The voltage is too low or too high Manostat is recommended Wrong wire connection Connect the circuit diagram correctly When cooling or heating outdoor fanruns compr essor doesn t run The protector itself has malfunction Use the multimeter to check whether the contact of the compressor is on when it is not overheated If it is not on then replace the protector The ...

Page 48: ... pipeline of outdoor unit Separate the touching pipeline Touch of inner plates Louver of outdoor unit touched outer case Abnormal sound inside compressor Change compressor Adjust location of louver 1 Tighten connect screw 2 Stick absorbing clay between plates In cool heat mode the outdoor unit and compressor will not run Controller malfunction IC20 03 broken creepage of parallel capacitor of relay...

Page 49: ...blinks for twice Yellow indicator blinks for 4 times Yellow indicator blinks for 5 times Yellow indicator blinks for 6 times Yellow indicator blinks for 7 times Yellow indicator blinks for 8 times Red indicator blinks for once Red indicator blinks for twice Red indicator blinksfor 3 times Red indicator blinks for 4 times Red indicator blinks for 5 times Red indicator for 6 times Red indicator blin...

Page 50: ...s 12 Limited frequency anti freezing Blink four times 13 Outdoor unit ambient sensor malfunction Blink five times F3 14 Outdoor unit tube temp sensor malfunction Blink six times F4 15 Outdoor air exhaust sensor malfunction Blink seven times F5 16 Achieve the temperature of unitstartsup Blink eight times 17 Communication is normal Blink continuously 18 Communication malfunction OFF E6 19 Overload s...

Page 51: ...or heat exchanger when heating is too high protection will be activated Possible reasons Outdoor temperature is too high when cooling insufficient outdoor air circulation refrigerant flow malfunction please refer to the malfunction analysis in the previous section for handling method 7 IPM module protection Processing method Once the module malfunction happens if it persists for a long time and ca...

Page 52: ...t age on the use DC voltmeter to measure the voltage on the two ends of capacitor test3 until the voltage is lower than 20V Check the connection of reactor L in the Electrical Wiring Diagram If the wiring of reactor L is normal Connect the rea ctor L according to Electrical Wiring Diagram Re energize and switch on the unit If the fault is eliminated End Replace the control panel AP1 Voltage within...

Page 53: ...of the machine is within normal range Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT Whether the compressor coil resistance is normal Whether the insulation of compressor coil against the copper tube is in good condition Whether the working loads of the machine are too high Whether the radiation is good Whether the charge volume of refrigerant is correct ...

Page 54: ...hen energize and start the unit Remove the wires on the two ends of capacitor C2 Then use capacitance meter to measure the capacitor C2 Verify as per the Parameters Sheet Stop the unit and disconnect the power supply Wait 20 minutes or use DC voltmeter to measure the voltage between the two ends of capacitor C2 until the voltage is lower than 20V If capacitor C2 is failed Replace the capacitor C2 ...

Page 55: ...55 ...

Page 56: ...ormalized Improve the heat dissipation environment of the unit Does the outdoor fan work normally 1 Check if the fan terminal O FAN is connected correctly 2 Resistance between any two terminals is measure by an ohm gauge and should be less than 1K Ohm Replace the control panel Replace the fan capacitor C1 Replace the outdoor fan Mainly detect Is outdoor ambient temperature in normal range Are the ...

Page 57: ... fail Are the wires for the compressor connected correctly Is connection sequence right Connect the wires as per the connection diagram Replace the control panel AP1 If the fault is eliminated Replace the compressor End Mainly detect Whether the compressor wiring is connected correct Is time for compressor stopping enough Is compressor broken 57 ...

Page 58: ...f the fault is eliminated Replace the compressor End Out of step occurs in operation Is the outdoor fan working normally Is the outdoor unit blocked by foreign objects Replace the control panel AP1 If the fault is eliminated Replace the compressor End Check if the fan terminal O FAN is connected correctly Remove foreign objects Replace the fan capacitor C1 Replace the outdoor fan Troubleshooting M...

Page 59: ... to the terminal hole and the fifth pin are almost the same less than 100 ohm Replace the electronic expansion valve If the fault is eliminated If the fault is eliminated Replace the control panel AP1 Coolant leakage refilling the coolant End Troubleshooting Mainly detect Whether the electronic expansion valve is connected well or not Is electronic expansion valve damaged Is refrigerant leaked 59 ...

Page 60: ...ance around zero The capacitor is short circuited and the capacitor should be repla ced Restart the unit If the fault is eliminated Disconnect the terminals for the reactor and measure the resistance between the two terminals of the reactor by an ohm gauge Whether there is any damage or short circuit Replace the reactor Restart the unit If the fault is eliminated Replace the control panel AP1 End ...

Page 61: ...ce the main board AP1 of the outdoor unit If the fault is eliminated Is the connection right Check the wiring of the indoor and outdoor units with reference to the wiring diagram Correctly connect the corresponding wires for the indoor and outdoor units with reference to the wiring diagram Troubleshooting Mainly detect Detect the indoor and outdoor units connection wire and indoor and outdoor unit...

Page 62: ...sition as shown in the diagram with a voltmeter Value jumping Measure voltage at the Test 11 position as shown in the diagram with a voltmeter Value jumping Measure voltage at the Test 12 position as shown in the diagram with a voltmeter Value jumping The communication circuit of the outdoor unit is normal End Fault with outdoor unit Troubleshooting 62 ...

Page 63: ...XQLYHUVDO PHWHU YROWDJH RI ERWK VLGHV RI 5 7KH YROWDJH VKRXOG EH YDULDEOH 7HVW 7HVW WKH YROWDJH RI SLQ DQG SLQ RI 8 ZLWK XQLYHUVDO PHWHU YROWDJH RI ERWK VLGHV RI 5 7KH YROWDJH VKRXOG EH YDULDEOH 7HVW 2WKHUZLVH WKHUH LV PDOIXQFWLRQ RI PDLQERDUG RI RXWGRRU XQLW 7HVW WKH YROWDJH RI SLQ DQG SLQ RI 8 ZLWK XQLYHUVDO PHWHU YROWDJH RI ERWK VLGHV RI 5 7KH YROWDJH VKRXOG EH YDULDEOH WHVW 7HVW WKH YROWDJH RI...

Page 64: ...5 57 59 61 63 64 66 68 70 72 73 75 77 79 81 82 84 86 88 90 91 93 95 97 99 100 102 104 106 108 109 111 113 115 117 118 120 122 124 126 127 130 131 133 135 136 138 140 142 144 145 147 149 151 153 154 156 158 160 162 163 165 167 169 171 172 174 176 178 180 181 183 185 187 189 190 192 194 196 198 199 202 203 205 207 208 210 212 214 216 217 219 221 223 225 226 228 230 232 234 235 237 239 241 243 244 24...

Page 65: ... 54 55 57 59 61 63 64 66 68 70 72 73 75 77 79 81 82 84 86 88 90 91 93 95 97 99 100 102 104 106 108 109 111 113 115 117 118 120 122 124 126 127 130 131 133 135 136 138 140 142 144 145 147 149 151 153 154 156 158 160 162 163 165 167 169 171 172 174 176 178 180 181 183 185 187 189 190 192 194 196 198 199 202 203 205 207 208 210 212 214 216 217 219 221 223 225 226 228 230 232 234 235 237 239 241 243 2...

Page 66: ... 52 54 55 57 59 61 63 64 66 68 70 72 73 75 77 79 81 82 84 86 88 90 91 93 95 97 99 100 102 104 106 108 109 111 113 115 117 118 120 122 124 126 127 130 131 133 135 136 138 140 142 144 145 147 149 151 153 154 156 158 160 162 163 165 167 169 171 172 174 176 178 180 181 183 185 187 189 190 192 194 196 198 199 202 203 205 207 208 210 212 214 216 217 219 221 223 225 226 228 230 232 234 235 237 239 241 24...

Page 67: ... p O with charging cylinder n e p O n e p O n e p O with charging cylinder n e p O n e p O n e p O n e p O Works Shipping Air purging Installation Operation Pumping down Transfering Evacuation Servicing Gas charging Servicing Pressure check Servicing Gas releasing Servicing 1 2 3 4 5 6 Valve cap Open position Closed position Pin Service port Service port cap To outdoor unit Flare nut To piping con...

Page 68: ...ow pressure valve handle of gauge manifold Check the flare connections for gas leakage 6 Use torque wrench to tighten the service port nut to a torque of 1 8kg cm 7 Set the 3 way valve to the back seat 8 Mount the valve stem nuts to the 2 way and 3 way valves 9 Check for gas leakage At this time especially check for gas leakage from the 2 way and 3 way valve s stem nuts and from the service port n...

Page 69: ...y valve Connect the charge hose with the push pin to the service port 4 Air purging of the charge hose Open the low pressure valve on the charge set slightly to air purge from the charge hose 5 Set the 2 way valve to the closed position 6 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 1kg cm2 g 7 Immediately set the 3 way valve to the closed position Do this ...

Page 70: ...t for 1 minute repeat 3 times After purging the air use a torque wrench to tighten the flare nut on liquid side valve 4 Check for gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the gas cylinder and discharge the refriger ant until the gauge indicates 3 to 5 kg cm2 g 6 Disconnect the charge set and the gas cylinder and set the Liquid side and ...

Page 71: ...scharge the refrigerant until the gauge indi cates 0 kg cm2 G If there is no air in the refrigerant cycle the pressure when the air conditioner is not running is higher than 1 kg cm2 G discharge the refrig erant until the gauge indicates 0 5 to 1 kg cm2 G if this is the case it will not be neces sary to apply a evacuatin Discharge the refrigerant gradually if it is dis charged too suddenly the ref...

Page 72: ...uum of 4 mmHg or less 3 Close the valve Lo side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approxima tely 5 minutes after turning off the vacuum pump 4 Disconnect the charge hose from the vacuum pump Vacuum pump oil If the vacuum pump oil becomes dirty or depleted replenish as needed Lo Open Open Vacuum pump 3 Way valve Outdoor unit Liquid side Indoo...

Page 73: ...ximately 150g each time while operating the air conditioner in the cooling cycle however one time is not suffi cient wait approximately 1 minute and then repeat the procedure pumping down pin 4 Immediately disconnect the charge hose from the 3 way valve s service port Stopping partway will allow the gas to be dis charged If the system has been charged with liquid refrigerant while operating the ai...

Page 74: ...utes or more after turning off all power supplies before disassembling work Removal Procedure 1 Remove front panel Open the front panel and slightly pull it to remove it 2 Remove guide louver Push out the shaft sleeve and slightly bend the guide louver to remove it filter screw front panel guide louver Image shown here is indicative only Actual product you receive may differ 74 ...

Page 75: ...Remove electric box Unscrew the 2 screws fixing the electric box Pull out the wiring terminal of motor and then un screw the 3 screws fixing electric box Lift the ele ctric box to remove it 6 Remove evaporator Unscrew the screws on the rear pipe cardplate and then remove the cardplate temp sensor clasps screw clasp screw clasps screws 75 ...

Page 76: ...rocedure 7 Remove motor and cross flow fan Unscrew the screws fixing the motor press plate of motor and then the screws connecting the mo tor and cross flow fan to separate and remove them screws screw screws 76 ...

Page 77: ...ub assy forcibly downwards to re move it Unscrew the 3 screws fixing the top cover to remove it 2 Remove cabinet Unscrew the 4 screws fixing the cabinet to remove it 3 Remove front panel Unscrew the 5 screws fixing the front panel and pull out the front panel to remove it 10 2 Removal Procedure of Outdoor Unit If it s 108 230V there are 6 screws need to be unscrewed because there are one more powe...

Page 78: ...the plug in line to remove the electric box 5 Remove axial flow fan Unscrew the nut and remove the washer fixing the axial flow fan and then pull it out nut and washer screws axial flow fan 6 Remove 4 way valve Wrap the 4 way valve with wet cloth and unsolder the 4 weld spots of the 4 way valve to remove it weld spots 4 way valve 78 ...

Page 79: ...solder the weld spots of gas valve and suction pipe to remove the gas valve Unscrew the 2 screws fixing the liquid valve and unsolder the weld spots of liquid valve and suc tion pipe to remove the liquid valve screws gas valve electronic expannsion valve liquid valve 9 Remove compressor Unsolder the 2 weld spots of the compressor and unscrew the 3 feet nuts and remove the was heres fixing the comp...

Page 80: ... 15 16 17 18 19 20 21 22 23 24 11 25 26 27 28 30 31 32 33 34 29 35 36 37 38 40 39 41 1 2 3 5 4 6 8 9 10 12 7 MW09C1H MW12C1H Exploded Diagram SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTED SYSTEM COMPONENTS 80 ...

Page 81: ...Frame 18 69700117 MotorPressPlate 19 69700118 Pipe Clamp 20 69700119 Drainage Pipe 21 69700120 Cable Cross Plate 22 69700121 Rear Case assy 23 69700122 Fan Motor 24 69700123 Motor MP24AA 25 69700124 Crank 26 69700125 Display Board 27 69700126 Ambient Temperature Sensor 28 69700127 Transformer 29 69700128 Electric Box Assy 30 69700129 Electric Box 31 69700130 4 bit Terminal Board 32 69700131 Main B...

Page 82: ...00117 MotorPressPlate 19 69700118 Pipe Clamp 20 69700119 Drainage Pipe 21 69700120 Cable Cross Plate 22 69700121 Rear Case assy 23 69700122 Fan Motor 24 69700123 Motor MP24AA 25 69700124 Crank 26 69700125 Display Board 27 69700126 Ambient Temperature Sensor 28 69700127 Transformer 29 69700143 Electric Box Assy 30 69700129 Electric Box 31 69700130 4 bit Terminal Board 32 69700131 Main Board 33 6970...

Page 83: ...27 26 24 22 23 18 17 16 15 14 13 12 11 10 6 5 7 9 25 8 19 20 21 4 3 2 1 31 29 28 30 MR09C1H Exploded Diagram SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTED SYSTEM COMPONENTS 83 ...

Page 84: ...le Cross Plate Assy 14 69700013 Right Side Plate Assy 15 69700014 Wire cover 16 69700015 Magnet Coil 17 69700016 Temperature Sensor for Discharge Gas 18 69700017 Tube Sensor 20K black 19 69700018 Discharge Tube 20 69700019 Inhalation Tube 21 69700020 Overload Protector 22 69700021 Sensor 23 69700022 Rear Grill 24 69700023 Condenser Assy 25 69700024 Clapboard Sub Assy 26 69700025 Top Cover Plate 27...

Page 85: ...17 18 27 19 20 21 26 23 22 16 12 14 11 9 8 10 13 15 25 24 2 1 3 5 4 6 7 MR12C1H Exploded View SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTED SYSTEM COMPONENTS 85 ...

Page 86: ... Tube 11 69700025 Top Cover Plate 12 69700034 Rear Grill 13 69700035 Discharge Tube 14 69700015 Magnet Coil 15 69700036 Right Side Plate 16 69700011 Valve Support 17 69700027 Electric box cover sub assy 18 69700029 Electric Box Assy 19 69700020 Overload Protector 20 69700006 Compressor Gasket 21 69700037 Drainage Plug 22 69700010 Cut off Valve 3 8 23 69700009 Cut off Valve 1 4 24 69700007 Compress...

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Page 88: ...FRIEDRICH AIR CONDITIONING CO 10001 Reunion Place Ste 500 San Antonio TX 78216 210 546 0500 877 599 5665 x 261 FAX 210 546 0630 Email tac friedrich com www friedrich com Printed in the U S A ...

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Friedrich MR09C1H, Service Manual

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