Friedrich MRM09Y1J Service & Parts Manual Download Page 3

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TABLE OF CONTENTS

R‑410A SEALED SYSTEM REPAIR‑

Service Valves Appearance‑

Pumping Down‑

Gas Charging (After Repair)‑

COMPONENTS TESTING ‑

Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units (15k)‑

Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units (20k)‑

Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units (50k)‑

9‑12k Indoor Unit Printed Circuit Board Identification‑

18k Indoor Unit Printed Circuit Board Identification‑

24k Indoor Unit Printed Circuit Board Identification‑

36k Indoor Unit Printed Circuit Board Identification‑

9‑12k Outdoor Unit Printed Circuit Board Identification‑

18‑24k Outdoor Unit Printed Circuit Board Identification‑

36k Outdoor Unit Printed Circuit Board Identification‑

TROUBLESHOOTING‑

Diagnostic Codes‑

Malfunction of Temperature Sensor F1, F2‑

Malfunction of blocked Protection of IDU Fan Motor H6‑

Malfunction of Protection of Jumper Cap C5‑

Malfunction of IDU Fan Motor U8‑

Overcurrent Protection E5‑

Malfunction of Communication E6 ‑

Malfunction of Power Supply from Indoor to Outdoor Unit‑

Indoor fan does not rotate and there is no Feedback‑

Temperature sensor malfunction‑

100

Malfunction diagnosis of startup failure‑

101

Diagnosis of losing synchronism for compressor‑

102

Diagnosis of overload and discharge malfunction‑

103

Capacity Charging malfunction (Outdoor unit;18k, 24k, and 36k)‑

104

IPM Protection, Out‑of‑Step Fault, Compressor Phase Overcurrent‑

105

PFC (Correction Power Factor) Outdor Unit Malfuction‑

107

Troubleshooting for Normal Malfunction‑

108

WIRING DIAGRAMS‑

112

9‑12K Indoor Unit Wiring Diagram ‑

112

18K Indoor Unit Wiring Diagram‑

112

24K Indoor Unit Wiring Diagram‑

113

36K Indoor Unit Wiring Diagrams ‑

113

9‑12K Outdoor Unit Wiring Diagrams ‑

114

18k Outdoor Unit Wiring Diagrams‑

114

24k Outdoor Unit Wiring Diagrams‑

115

36k Outdoor Unit Wiring Diagrams‑

115

PARTS CATALOG‑

116

Indoor Unit MWM09Y1J, MWM12Y1J‑

116

Indoor Unit MWM18Y3J, MWM24Y3J‑

118

Indoor Unit MWM36YJ3 ‑

121

Outdoor Unit MRM09Y1J, MRM12Y1J‑

123

Outdoor Unit MRM18Y3J‑

126

Outdoor Unit MRM24Y3J‑

128

Outdoor Unit MRMY36J‑

130

APPENDIX‑

132

Appendix 1: Reference Sheet of Celsius and Farenheit‑

132

Appendix 2: Configuration of Connection Pipe‑

132

Appendix 3: Pipe Expanding Method‑

133

LIMITED WARRANTY‑

134

Summary of Contents for MRM09Y1J

Page 1: ...ts Manual Floating Air 96601400_00 MM09Y1J 9 000 BTU Single Zone 110V MM12Y1J 12 000 BTU Single Zone 110V MM18Y3J 18 000 BTU Single Zone 230V MM24Y3J 24 000 BTU Single Zone 230V MM36Y3J 36 000 BTU Sin...

Page 2: ...9K Heating Capacity Charts 21 12K Heating Capacity Charts 21 18K Heating Capacity Charts 22 24K Heating Capacity Charts 22 Indoor Coil Temperature 23 36K Heating Capacity Charts 23 9 12K Indoor Unit...

Page 3: ...t Protection E5 96 Malfunction of Communication E6 97 Malfunction of Power Supply from Indoor to Outdoor Unit 98 Indoor fan does not rotate and there is no Feedback 99 Temperature sensor malfunction 1...

Page 4: ...this manual and on your appliance Always read and obey all safety messages This is a safety Alert symbol This symbol alerts you to potential hazards that can kill or hurt you and others All safety mes...

Page 5: ...lt in property damage personal injury and or death Your safety and the safety of others are very important We have provided many important safety messages in this manual and on your appliance Always r...

Page 6: ...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 ne...

Page 7: ...ounted D Ducted Insider C Cassette R Remo te Condense r Function HS H eat Pump Single HM Heat Pump Multi HF Heat Pump Flex Single and Multizone Coolin g BTU HR Model Approximate Introductory Chara cte...

Page 8: ...8 INTRODUCTION MWM09Y1J MWM12Y1J Figure 101 Indoor Units MWM18Y3J MWM24Y3J MWM36Y3J...

Page 9: ...9 INTRODUCTION MRM09Y1J MRM12Y1J MRM18Y3J MRM24Y3J MRM36Y3J Figure 102 Outdoor Units MRM09Y1J MRM12Y1J MRM18Y3J MRM24Y3J MRM36Y3J Figure 103 Remote Control...

Page 10: ...Fan Type Cross ow Cross ow Cross ow Cross ow Cross ow Diameter Length DXL inch 3 5 8 X 23 3 8 rounded to the nearest 1 8 3 5 8 X 23 3 8 rounded to the nearest 1 8 3 7 8 X 25 5 8 rounded to the neares...

Page 11: ...7X1 1 2X26 37X1 3 4X30 Fan Motor Speed rpm 900 900 690 690 890 Output of Fan Motor W 30 30 60 60 170 Fan Motor RLA A 0 17 0 17 0 62 0 62 0 73 Fan Motor Capacitor F 3 5 3 5 Air Flow Volume of Outdoor U...

Page 12: ...Compressor Frequency Hz 40 60 80 Compressor Frequency Hz WB60 F Figure 203 9 12KOperationCharacteristicscurve 0 110 120 100 90 80 70 60 50 40 30 20 10 0 11 10 9 8 7 6 5 4 3 2 1 0 11 10 9 8 7 6 5 4 3 2...

Page 13: ...h Pipe length 24 6ft Current A Current A 40 60 80 Compressor Frequency Hz 40 60 80 Compressor Frequency Hz Figure 205 24KOperationCharacteristicscurve Cooling Heating 0 2 4 6 8 10 12 14 0 20 100 120 0...

Page 14: ...ition Indoor DB 70 F WB60 F Indoor air flow Super High 90 95 110 115 Figure 207 18 24 K Capacity Variation Ratio According to Temperature 5 14 23 110 100 90 80 70 60 50 40 32 41 47 50 Outdoor temp F C...

Page 15: ...80 70 60 50 40 23 32 41 50 Conditions Indoor DB70 F Indoor air High length Pipe 24 6ft flow Super Figure 208 36K Capacity Variation Ratio According to Temperature Indoor side noise when blowing Outdo...

Page 16: ...0 Indoor Fan Motor Rotating Speed Noice dB A low Middle High Super High Compressor frequency Hz Noise dB A Figure 210 18 24K Noise Curve 30 40 50 60 L SH Noise dB A M H Indoor fan motor rating speed 4...

Page 17: ...ressure at the side of big valve Connection pipe length 24 6ft SPECIFICATIONS RatedHeating con nectingindoorand DB WB Model Pressure ofgaspipe connecting indoorand outdoorunit Inletandoutletpipetem pe...

Page 18: ...0 38 8 22 6 25 0 40 8 80 6 69 0 41 9 17 6 97 0 43 9 80 7 45 0 44 23 7 06 5 37 0 48 7 65 5 77 0 50 8 12 6 17 0 51 8 64 6 57 0 53 9 30 7 07 0 54 9 70 7 38 0 56 10 23 7 77 0 58 59 8 12 6 17 0 60 8 67 6 6...

Page 19: ...5 1 1 18 86 14 79 1 13 17 12 92 10 13 0 93 14 4 11 29 0 96 15 2 11 92 0 99 16 24 12 74 1 03 17 37 13 62 1 06 18 08 14 19 1 1 19 34 15 17 1 13 23 14 31 11 22 0 93 15 38 12 06 0 96 16 45 12 9 0 99 17 52...

Page 20: ...2 95 26458 03 35569 95 27898 19 59F 15C 25716 05 20169 17 27639 87 21677 46 29563 68 23185 75 32054 96 25133 82 32378 75 25387 70 32864 43 25768 52 35345 99 27721 60 37269 80 29229 89 68F 20C 29346 30...

Page 21: ...oor Air Temp 60 64 MM09YJ Heating Indoor Air Temperature DB 68 Figure 218 9K Heating Capacity Charts F DB F WB TC PI TC PI TC PI TC PI TC PI TC PI TC PI 3 4 7 71 1 23 7 49 1 26 7 42 1 28 7 35 7 52 7 2...

Page 22: ...24 92 2 65 24 33 2 73 75 86 Outdoor Air Temp MM18YJ Heating Indoor Air Temperature DB 60 64 68 70 72 Figure 221 24K Heating Capacity Charts F DB F WB TC PI TC PI TC PI TC PI TC PI TC PI TC PI 3 4 14...

Page 23: ...107 62 23107 62 32F 27436 35 27436 35 27225 70 27225 70 26857 08 26857 08 26181 86 26181 86 26155 68 26155 68 26051 06 26051 06 25972 37 25972 37 41F 30711 86 30711 86 30501 22 30501 22 30143 12 30143...

Page 24: ...24 SPECIFICATIONS Unit inches 5 2 3 5 21 4 7 30 1 3 8 11 1 7 3 5 7 3 2 3 2 1 6 2 1 6 1 5 8 MWM09Y1J MWM12Y1J Figure 223 9 12K Indoor Unit Dimensions...

Page 25: ...25 7 1 5 21 2 7 2 1 6 2 1 6 5 1 2 6 1 3 2 4 5 2 3 4 3 1 2 1 4 7 2 7 3 5 27 5 1 8 2 1 6 2 1 6 Unit inches Figure 224 18 24K Indoor Unit Dimensions SPECIFICATIONS...

Page 26: ...9 12K Outdoor Unit Dimensions 53 9 64 12 53 64 10 11 19 32 3 1 2 1 37 64 13 25 32 10 29 3 8 2 3 4 2 3 4 Unit inches Figure 225 36K indoor Unit Dimensions Unit inches MRM09Y1J MRM12Y1J 10 1 8 12 3 5 0...

Page 27: ...27 SPECIFICATIONS Unit inches Figure 227 18 24K Outdoor Unit Dimensions 24 Unit inches Figure 228 36K Outdoor Unit Dimensions...

Page 28: ...rature indoor ambient temperature outdoor ambient temperature and blank is displayed circularly 19 AIR SWEEP icon again to clear the display 16 17 LOCK icon is displayed by pressing and buttons simult...

Page 29: ...function Saves room ambient temperature and automatically adjusts maintaining that room ambient until pressed again which cancels the SENSOR SAVE function Press this button to initiate the auto ON tim...

Page 30: ...disappears When the unit is OFF press MODE and buttons simultaneously to switch between C and F During operation point the remote control signal sender at t he receiving window on indoor unit The dist...

Page 31: ...t of malfunction the indoor fan blows residual heat 3 Defrosting control when the defrosting signal is received defrosting C B e Code H1 will be shown Theindoor fan stops Anti cold air function The ro...

Page 32: ...em will start running in the previously set mode when the setting time is reached Timer off if the timer off function is set when the system is off the system will keep off even though the setting tim...

Page 33: ...ing zone Keep zone Up zone Reset zone 3 minutes Standby Prohibits compressor start for 3 minutes after turning it of f except when defrosting Compressor Protection Function When turning the compressor...

Page 34: ...ng the above dropping continues until the current crosses the dropping zone without change In the keep zone the frequency limit will remain In the return reset zone the frequency limit will be cancell...

Page 35: ...ger temperature is dependent Reset zone Up zone Keep zone Dropping zone Stop zone 1 Conditions for Starting Defrost The starting conditions must be made with the outdoor ambient air sensor outdoor air...

Page 36: ...ecovery machine In either case close the large pipe service valve and immediately set the mode to off on the indoor unit Recover remaining refrigerant unti 0psi or less is achieved Remove the refriger...

Page 37: ...37 OPERATION 18 24kSequenceofOperation...

Page 38: ...38 OPERATION 18 24k Sequence of Operation O o 0 C L A B C D 1 1 4...

Page 39: ...39 OPERATION 18 24k Sequence of Operation...

Page 40: ...40 OPERATION 18 24k Sequence of Operation...

Page 41: ...41 OPERATION 18 24k Sequence of Operation...

Page 42: ...ameters 2 Basic Functions 1 Cooling Mode 86 Tpreset Tpreset 3 F Compressor Outdoor fan Indoor fan Tamb Stop cooling Start cooling Original working state 6 min 3 min 6 min Set fan speed Protection Run...

Page 43: ...43 OPERATION 36k Sequence of Operation 41 28 4 c 23 4 28 4 17 6 d 14 e 35 6 50 3 Protection 104 108 108 and total total 86 5 AUTO Mode 71 6 78 8 d Under AUTO mode if 71 6 Protection 126 131...

Page 44: ...he sensor is detected to be open circuited or short circuited for successive 30 seconds F4 Outdoor tube temperature The sensor is detected to be open circuited or short circuited for successive 30 sec...

Page 45: ...iquid pipe Gas pipe Accumlator side Compressor Strainer Capillary Strainer r e t e m a i d e p i p t n a r e g i r f e R Liquid 1 4 Gas 3 8 Indoor unit COOLING HEATING Discharge 4 Way valve Suction Ou...

Page 46: ...mpressor Strainer Electron Strainer expansion valve Figure 304 24K Refrigerant System Diagram Cooling and heating model Indoor unit COOLING HEATING 4 Way valve Discharge Suction Outdoor unit Heat exch...

Page 47: ...47 INSTALLATION...

Page 48: ...48 INSTALLATION Installation Tools...

Page 49: ...inches Space to the wall S p a c e t o t h e o b s t r u c t i o n r o o l f e h t o t e c a p S A t l e a s t 6 0 i n c h e s Space to the obstructio At least 28 inches At least Space to the wall 12...

Page 50: ...nnect wires of outdoor unit Bind up pipes and hang the indoor unit Make the bound pipes pass through the wall hole and then connect outdoor unit Neaten the pipes Vacuum pumping and leakage detection C...

Page 51: ...leorexplosivegas orvolatileobjectsspreadintheair 2 Placeswithhigh frequencydevices suchasweldingmachine medicalequipment 3 Placeswithoilorfumesintheair 4 Placeswithsulfuretedgas IndoorUnit 1 Thereshou...

Page 52: ...ty 6 Do not put through the power before nishing installation 7 For appliances with type Y attachment the instructions shall contain the substance of thefollowing If the supply cord is damaged it must...

Page 53: ...unted frame As show in Fig 1 5 Open a piping hole with the diameter of 2 1 6inch on the selected outlet pipe position In order to drain smoothly slant the piping hole on the wall slightly downward to...

Page 54: ...rench Open end wrench Indoor pipe Pipe Union nut Pipe joint Union nut Pipe Refer to the following table for wrench moment of force Fig 5 Fig 6 Fig 7 Hex nut diameter inch Tightening torque ft Ibf 1 4...

Page 55: ...please contact the supplier for a new one Avoid extending the wire by yourself For the air conditioner with plug the plug should be reachable after nishing installation For the air conditioner without...

Page 56: ...nthewall mountingframe 3 Stuffthegapbetweenpipesandwallholewithsealinggum 4 Fixthewallpipe AsshowinFig 16 5 Checkiftheindoorunitisinstalled rmlyandclosedtothewall AsshowinFig 17 NOTE Do not bend the d...

Page 57: ...ingandHeatingUnitOnly 1 Connecttheoutdoordrainjointintotheholeonthechassis 2 Connectthedrainhoseintothedrainvent AsshowinFig 19 FixtheOutdoorUnit 1 Place the outdoor unit on the support 2 Fix the foot...

Page 58: ...late sub assy power connect wire power wire N 1 N N L L 3 2 Indoor unit connection wire pipe wire passing hole Fixed nut Finish NeatenthePipes 1 Thepipesshouldbeplacedalongthewall bentreasonablyandhid...

Page 59: ...e valve to the vacuum pump and check for micron rise for 15 minutes If microns rise to near atmo spheric pressure there is a potential leak follow Section 8 7 A If microns rise over 5000 the system is...

Page 60: ...uation System Model MRM09YJ 0 2 Calculated Oz Ft of addi onal charge MRM12YJ MRM18YJ MRM24YJ MRM36YJ WAIT EVACUATE BREAK VACUUM WITH DRY NITROGEN CHARGE SYSTEM EVACUATE WAIT EVACUATE CHECK FOR TIGHT D...

Page 61: ...kage Is the unit grounded securely 8 Does the power cord follow the specification 9 It may cause malfunction or damage the parts Is there any obstruction in air inlet and air outlet 10 It may cause in...

Page 62: ...b Lift center section of air filter and disengage hooks Left and right filters are interchangeable To re install insert air filter along the guide Remove air filter by pulling forward c If ON OFF but...

Page 63: ...nd the horizontal louver slightly and then remove it Left and right filters are interchangeable To re install insert air filter along the guide b Hook a finger onto the projection part provided on the...

Page 64: ...ody with the front grille At the upper part there are 2 hooks in the left and the right Disengage the hooks by pressing knobs with a screwdriver b c Disengage the 3 hooks on the upper part In case tha...

Page 65: ...ing models Take care not to losw the clip of thermistor board Terminal Connecting wires Heat exchanger thermistor Heat exchanger thermistor c Clip Disconnect the Cable clamp Remove Temperature Sensor...

Page 66: ...Unit Remove Pipe Clamp a b Loosen the screws in the right and the left which fix the Evaporator Assy Remove Evaporator Assy Auxiliary piping Piping fixture Adjust the pipeline slightly c Auxiliary pip...

Page 67: ...te of motor Shaft cushion rubber base Remove screws of motor p r e s s p l a t e a n d t h e n remove the motor press plate Remove motor blade and shaft cushion rubber base screw Remove screws on cros...

Page 68: ...panel Top panel a Loosen the screw of the cable cross plate sub assy and remove it Pull down the stop valve cover and remove it a Cable Cross Loosen the 3 screws right left and lift the top panel Val...

Page 69: ...ter case Twist off the screws connecting right side plate and end plate of condenser grille valve support and electric box and then remove the right side plate The screw has reverse winding Remove the...

Page 70: ...re Points Twist off the 4 tapping screws fixing the motor pull out the pin of leading wire of motor and then remove the motor Twist off the 2 tapping screws on motor support and 1 screws on electric b...

Page 71: ...ot nuts on compressor and then remove the compressor Twist off the 2 bolts fixing the gas valve unsolder the soldering joint between gas valve and air return pipe and then remove the gas valve note Wh...

Page 72: ...with charging cylinder Open Open Open Open with charging cylinder Open Open Open Works Shipping Air purging Installation Operation Evacuation Pumping down Transfering Servicing Gas charging Servicing...

Page 73: ...firm that the valve stems are in the raised position Be sure to use a hexagonal wrench to operate the valve stems Connect the charge hose with the push pin to the service port Open the low pressure va...

Page 74: ...air conditioner turn off the air conditioner before disconnecting the hose Tighten the service port nut Be sure to check for gas leakage Lo Open Open 3 Way valve Gas side CLOSE 3 Way valve OPEN Outdo...

Page 75: ...2 2 28 235 4 0 697 26 6 57 18 96 8 9 382 167 2 206 237 2 0 678 28 4 54 31 98 6 9 003 168 8 2 133 239 0 66 30 2 51 59 100 4 8 642 170 6 2 064 240 8 0 642 32 49 02 102 2 8 297 172 4 1 997 242 6 0 625 33...

Page 76: ...2 3 04 235 4 0 93 26 6 76 24 96 8 12 51 167 2 94 237 2 0 904 28 4 72 41 98 6 12 168 8 2 844 239 0 88 30 2 68 79 100 4 11 52 170 6 2 752 240 8 0 856 32 65 37 102 2 11 06 172 4 2 663 242 6 0 833 33 8 6...

Page 77: ...49 19 147 2 10 54 217 4 3 04 8 6 323 9 78 8 47 08 149 10 18 219 2 2 955 10 4 306 2 80 6 45 07 150 8 9 827 221 2 872 12 2 289 6 82 4 43 16 152 6 9 489 222 8 2 792 14 274 84 2 41 34 154 4 9 165 224 3 5...

Page 78: ...oard Identification 1 2 3 4 5 6 7 8 9 10 11 NO Name 1 Fuse 2 Live wire 3 Communication wire 4 Display interface 5 Jumper cap 6 Up and down swing 7 8 Ambient temperature sensor Temperature sensor 9 PG...

Page 79: ...79 COMPONENTS TESTING Figure 702 18k Indoor Unit Printed Circuit Board Identification 1 3 2 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Figure 703 24k Indoor Unit Printed Circuit Board Identification...

Page 80: ...ING Figure 704 36k Indoor Unit Printed Circuit Board Identification Top view Bottom view Indoor Unit No Name 1 2 3 4 5 Wired Controller Optional 6 7 8 9 10 11 12 Wiring terminal for DC motor 1 2 3 4 5...

Page 81: ...sion valve 4 Communication wire port 9 Port of compressor electric heating belt 5 Earthing wire port 10 Port of AC fan motor GRJW819 A3 V1 2 2013 06 25 12 1 3 2 4 5 6 7 8 9 10 11 12 13 14 1 Compressor...

Page 82: ...S TESTING Bottom view Outdoor Unit Top view No Name No Name No Name 1 6 11 2 7 12 3 8 13 4 HPP 9 14 5 EV 10 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Figure 707 36k Outdoor Unit Printed Circuit Board Ide...

Page 83: ...ally 3 The unit has been plugged up somewhere 4 HighDis chargetem peraature protectionof compressor E4 OFF3s andblink 4times OFF1s andblink 7times Duringcoolinganddrying operation compressor andoutdoo...

Page 84: ...0 Malfunction protectionof jumpercap C5 OFF3s andblink 15times Wirelessremotereceiver andbuttonareeffective but cannotdisposetherelated command 1 Nojumpercapinserton mainboard 2 Incorrectinsertofjumpe...

Page 85: ...eraturesen sorhasnt beenconnected wellor isdamaged Pleasecheck itbyreferringtotheresis tancetablefortemperature sensor 15 outdoor condenser temperature sensoris open short circuted F4 OFF3s andblink 4...

Page 86: ...ationfrequency forcompressorisde creased Poorair returninindoor unitorfanspeedistoolow 21 voltagefor DCbusbar istoohigh high PH OFF3s andblink 11times OFF1s andblink 13times Duringcoolinganddrying ope...

Page 87: ...26 compressor intermediate frequencein teststate P3 during blinking ONand 0 25sand OFFand 0 25s during blinking ONand 0 25sand OFFand 0 25s Showingduringmiddle coolingormiddleheating test 27 overcurr...

Page 88: ...ed Refertothemalfunction analysis overload high temperatureresistant 32 static dedusting protection H2 OFF 3s and blink twice 33 overload protection for com pressor H3 OFF 3s and blink 3 times OFF 1s...

Page 89: ...ion Refertothemalfunction analysis IPMprotec tion lossofsynchronism protectionandovercurrent protectionofphasecurrent forcompressor 39 PFC protec tion HC OFF3s andblink 6times OFF1s andblink 14times D...

Page 90: ...geisunstable 46 malfunction ofcomplete unitscurrent detention U5 OFF3s andblink 13times Duringcoolinganddrying operation thecompressor willstopwhileindoorfan willoperate Duringheatingoperating thecomp...

Page 91: ...icator Yellow Indicator RedIndi cator Green Indicator 53 normal communi cation OFF 0 5s and blink once 54 defrosting H1 OFF 3s and blink once during blinking ON 10S AND OFF 0 5S OFF 1s and blink twice...

Page 92: ...controller loosened or poorly contacted eliminated Is malfunction Is there short circuit due to trip over of the parts yes Make the parts upright eliminated Is malfunction Replace the mainboard with t...

Page 93: ...again measurewhether theoutput voltageoncontrol terminal for PG motor is morethan 50V within 1minafter the louvers areopened Is malfunction eliminated Tighten the screw reassemble the blade motor and...

Page 94: ...r caponthe mainboard Is thejumper capinserted correctly and tightly End yes yes Assemble the jumper cap with the same model no Replacethe jumper cap with thesamemodel no eliminated Ismalfunction yes I...

Page 95: ...95 TROUBLESHOOTING Malfunction of IDU Fan Motor U8 Service Manual No Start End...

Page 96: ...compressor running abnormally Is there abnormal sound or oil leakage is the temperature of the shell too high etc no no panel Replace the control End yes Malfunction is eliminated no Normal fluctuati...

Page 97: ...that of ODU Communication cord is damaged Main board matches with display board Main board of Replace IDU s main board Malfunction eliminated End Connect the line according to wiring diagram Match cor...

Page 98: ...iring Voltage 200V Indoor main board error Adjust wiring Outdoor electric box error indoor and outdoor wiring error Replace main board of indoor unit Replace outdoor electric box Replace indoor and ou...

Page 99: ...malrange measurethevoltagebetweenLandNofthewiringblockXTwithACvoltagegauge Y Y Y N N N Y N unit and start it Energize the Voltage between L and N of indoor wiring block Voltage 200V Check power supply...

Page 100: ...ergize the Indoor unit Indoor unit display F1 F2 display F4 F5 Reliable connected Replace Check connecting state of outdoor temperature sensor Tesmepnesroar ture Sensor Remove error Replace parts elec...

Page 101: ...nough Iscompressordamaged Y N Y N N Y Y N Energize the unit and start it Is the stop time of compressor more than 3min Start it 3 min later Startup failure Is compressor wire connected correctly Conne...

Page 102: ...an 3min of compressor more well connected Replace parts of outdoor Is wire of compressor electric box Remove error Replace compressor Finish during running Losing synchronism Is outdoor fan normal Is...

Page 103: ...pins close to the terminal hole and the 5th pin almost the same They should be less than 100 ohm N N N Y Y Y Y N 20min after de energization of complete unit expansion valve Is electric Is overload wi...

Page 104: ...an 200V testing circuit on control panel AP1 Replace the control panel AP1 Voltage within Shut down the power and repair the power 210VAC 250VAC supply to restore the Measure the AC voltage between te...

Page 105: ...igh and exceeds the permissible range 4 If the charge volume of refrigerant is too much resulting in that the system pressure is too high 5 Other conditions resulting in that the system pressure becom...

Page 106: ...ambient temperature higher than 53 20 minutes after the complete unit is powered off Is heat dissipation of the indoor unit and outdoor unit abnormal Improve the heat Normal protection please operate...

Page 107: ...the PFC capacitor outdoor unit and the Whether there is any damage or short circuit If the fault is eliminated Replace it as per the wiring diagram and reconnect the wires Whether there is any damage...

Page 108: ...operationindicatoris bright whilenodisplayonremotecontrol lerorbuttonshavenoaction Replacebatteriesforremotecontroller Repairorreplaceremotecontroller PoorCooling Heating forAirConditioner Settempera...

Page 109: ...rdisdamaged Othersareallnormal whilehorizontal louvercan toperate Replacethemainboardwiththesame model ODUFanMotoCan tOperate Wrongwireconnection orpoorconnection Checkthewiringstatusaccordingtocircui...

Page 110: ...undandvibration Whenturnonorturnofftheunit thepanel andotherpartswillexpandandthere s abnormal sound There sthesoundof PAPA Normalphenomenon Abnormalsoundwill disappearafterafewminutes Whenturnonortur...

Page 111: ...Malfunction PossibleCauses DiscriminatingMethod Airconditioner Status Troubleshooting Abnormalsoundinsidethecompressor Abnormalsoundinsidethecompressor Ifaddtoomuchrefrigerantduringmainte nance please...

Page 112: ...m MWM09Y1J MWM12Y1J Figure 801 9 12K Indoor Unit Wiring Diagram Symbol Symbol Color Symbol Symbol Color Symbol Name WH White GN Green CAP Jumper cap YE Yellow BN Brown COMP Compressor RD Red BU Blue G...

Page 113: ...113 WIRING DIAGRAMS Figure 804 36K Indoor Unit Wiring Diagrams Figure 803 24K Indoor Unit Wiring Diagram 6361000043101...

Page 114: ...L1 G INDOOR UNIT FAN MOTOR COMP INDC2 YEGN 13OG SAT 4WH 5WH OVC COMP OFAN G 12WH 3RD 2BU 1YE INDC1 L M 4V COM INNER 1 G 17RD 15YE 16BU 2 3 XT AP1 11BK 9BN PE 10BU 14YEGN N AC L 6YEGN WARNING Please do...

Page 115: ...115 WIRING DIAGRAMS Figure 807 24k Outdoor Unit Wiring Diagrams Figure 808 36k Outdoor Unit Wiring Diagrams 6361000047001...

Page 116: ...116 FIgure 901 PARTS CATALOG Indoor Unit MWM09Y1J MWM12Y1J MWM09Y1J MWM12Y1J...

Page 117: ...M12Y1J 1 18 69700352 Evaporator Support MWM09Y1J MWM12Y1J 1 19 68700159 Fan Bearing MWM09Y1J MWM12Y1J 1 20 69700353 Bearing Holder MWM09Y1J MWM12Y1J 1 21 69700354 Axil Bush Sub assy MWM09Y1J MWM12Y1J...

Page 118: ...118 FIgure 902 PARTS CATALOG Indoor Unit MWM18Y3J MWM24Y3J...

Page 119: ...24Y3J 1 12 69700319 Electric Box Cover MWM18Y3J 1 12a 69700302 Electric Box Cover MWM24Y3J 1 16 69700320 Front Panel MWM18Y3J 1 16a 69700303 Front Panel MWM24Y3J 1 17 69700321 Front Case Assy MWM18Y3J...

Page 120: ...MWM18Y3J 1 32a 69700153 Wall Mountiing Frame MWM24Y3J 1 33 69700115 Rubber Plug Water Tra y MWM18Y3J MWM24Y3J 1 34 69700111 Left Axile Bush MWM18Y3J MWM24Y3J 1 35 69700112 Ring of Bearing MWM18Y3J 1...

Page 121: ...121 PARTS CATALOG Indoor Unit MWM36YJ3 2 4 5 6 7 15 10 11 17 21 22 40 30 16 39 38 36 31 14 12 13 29 1 3 9 19 23 25 26 27 FIgure 903...

Page 122: ...y MWM36YJ3 I 17 69700607 Cross Flow Fan 1 MWM36YJ3 1 19 69700608 Cross Flow Fan 2 MWM36YJ3 1 21 69700609 Left Evaporator Support MWM36YJ3 1 22 69700610 Evaporator Assy MWM36YJ3 1 23 69700611 Wall Moun...

Page 123: ...123 FIgure 904 PARTS CATALOG Outdoor Unit MRM09Y1J MRM12Y1J MRM09Y1J MRM12Y1J...

Page 124: ...port MRM09Y1J 1 13a 69700272 Valve Support MWM12Y1J 1 14 69700286 Cable Cross Plate 2 MRM09Y1J 1 14a 69700014 Cable Cross Plate 2 MWM12Y1J 1 15 69700276 Cable Cross Plate 1 MRM09Y1J 1 15a 69700283 Cab...

Page 125: ...y MWM12Y1J 1 29 69700290 Main Board MRM09Y1J 1 29a 69700000 Main Board MWM12Y1J 1 30 69700287 Electric Box Assy MRM09Y1J 1 30a 69700273 Electric Box Assy MWM12Y1J 1 31 69700196 Terminal Board MRM09Y1J...

Page 126: ...126 PARTS CATALOG Outdoor Unit MRM18Y3J FIgure 905...

Page 127: ...g MRM18Y3J 1 9 69700238 Cabinet Assy MRM18Y3J 1 10 69700239 Rear Grill MRM18Y3J 1 11 69700240 Front Grill MRM18Y3J 1 12 69700241 Motor Support Sub Assy MRM18Y3J 1 13 69700242 Valve Support Assy MRM18Y...

Page 128: ...128 PARTS CATALOG Outdoor Unit MRM24Y3J FIgure 906...

Page 129: ...RM24Y3J 1 14 69700244 Electric Box Assy MRM24Y3J 1 15 69700245 Chassis Sub assy MRM24Y3J 1 16 69700246 4 Way Valve Assy MRM24Y3J 1 17 69700164 Drainage Connecter MRM24Y3J 1 18 69700165 Cut off Valve M...

Page 130: ...130 PARTS CATALOG Outdoor Unit MRMY36J FIgure 907 2 9 10 18 20 21 11 12 14 15 22 23 26 27 32 34 4 1...

Page 131: ...ff Valve MRM36Y3J 1 18 69700581 Handle Assy MRM36Y3J 1 20 69700582 Electronic Expansion Valve Sub Assy MRM36Y3J 1 21 69700583 Temperture Sensor MRM36Y3J 1 22 69700584 Rear Grill MRM36Y3J 1 23 69700585...

Page 132: ...eating oz ft 1 4 3 8or 1 2 0 2 0 2 1 4 or 3 8 5 8 or 3 4 0 2 0 2 1 2 3 4 or 7 8 0 3 1 3 5 8 1 or 1 1 4 0 7 1 3 3 4 2 7 2 7 7 8 3 8 3 8 Cooling capacity Max height Max length of connection pipe 5000 Bt...

Page 133: ...C Put on suitable insulating pipe Confirm the pipe length according to the distance of indoor unit and outdoor unit Cut the required pipe with pipe cutter D Put on the union nut Remove the burrs with...

Page 134: ...thorized FRIEDRICH distributor dealer or the contractor who installed the equipment If your dealer or contractor needs assistance the authorized FRIEDRICH distributor is available for consultation and...

Page 135: ...te This information is used to identify product failure trends initiate corrective action and improve product quality thereby further reducing warranty expenses while increasing customer satisfaction...

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Friedrich MRM09Y1J, Service & Parts Manual

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