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Friedrich MW09C1H Air Conditioner User Manual

Contents

1. Temp Resistance Temp Resistance Temp Resistance Temp Resistance ko F kQ F kQ F 2 138 100 68 18 750 138 3 848 208 1 071 0 128 600 70 17 930 140 3 711 210 1 039 1 121 600 72 17 140 142 3 579 212 1 009 3 115 000 73 16 390 144 3 454 214 0 980 5 108 700 75 15 680 145 3 333 216 0 952 7 102 900 77 15 000 147 3 217 217 0 925 9 97 400 79 14 360 149 3 105 219 0 898 10 92 220 81 13 740 151 2 998 221 0 873 12 87 350 82 13 160 153 2 896 223 0 848 14 82 750 84 12 600 154 2 797 225 0 825 16 78 430 86 12 070 156 2 702 226 0 802 18 74 350 88 11 570 158 2 611 228 0 779 19 70 500 90 11 090 160 2 523 230 0 758 21 66 880 91 10 630 162 2 439 232 0 737 23 63 460 93 10 200 163 2 358 234 0 717 25 60 230 95 9 779 165 2 280 235 0 697 27 57 180 97 9 382 167 2 206 237 0 678 28 54 310 99 9 003 169 2 133 239 0 660 30 51 590 100 8 642 171 2 064 241 0 642 32 49 020 102 8 297 172 1 997 243 0 625 34 46 600 104 7 967 174 1 933 244 0 608 36 44 310 106 7 653 176 1 871 246 0 592 31 42 140 108 7 352 178 1 811 248 0 577 39 40 090 109 7 065 180 1 754 250 0 561 41 38 150 111 6 791 181 1 699 252 0 547 43 36 320 113 6 529 183 1 645 253 0 532 45 34 580 115 6 278 185 1 594 255 0 519 46 32 940 117 6 038 187 1 544 257 0 505
2. ROOM TUBE DISPLAY 1 1 TEM SENSOR TEM SENSOR n CN1 CN2 0 9 am AME ai 1 RT1 RT pa 1 Xn Z Z Qe M BU L1 DISPA DISP 2 ROOM TUBE diim W5 BK WEN L1 1 1 1 W2 YEGN ACL L OUT CA AP2 7 JUMP W1 YEGN 1 EVAPORATOR ELECTRIC BOX i SWING UD TR OUT TR IN v z Ne M Z Z 1 i a TC M2 E i i Li 1 FAN MOTOR SWING MOTOR U D TRANSFORMER 18 OUTDOOR UNIT Schematic Diagram Outdoor Unit Cooling Models of 115V TUBE EXHUAST 227 TEM SENSOR TEM SENSOR TEM SENSOR W RT3 0 W3YEGN W10R W5 BU WeYE WT BK A 7 U G a OVERHEAT OUTTUBE OUTROOM EXHAUST N wid BU D N s 7 WA BK 0 BN gt dy P PUER LZ jer gla co ACL L1 0 Nes en 2 4i MOWE N E YEGN AC N3AC NAAC L3AC L2 ACNS AC L2 POWER WI8 YEGN D e e 6 WISBU W24RD
3. 83 MRO9CTH Parts List 84 FPN 69700000 69700001 Cabinet 69700002 69700003 Motor FW30G ZL 69700004 69700005 69700006 E art Description hoke Plug ompressor Gasket 69700007 ompressor C 6RZ110H1A able Cross Plate Ass O 5 5 m O N ro 69700008 69700009 69700010 69700011 Valve Suppot 69700012 69700013 69700014 Wirecover 69700015 69700016 69700017 69700018 69700019 69700020 69700021 ensor 69700022 ear Grill 69700023 69700024 Ass 69700025 Top Cover Plate 69700026 otor suport spot welding sub ass 69700027 lectric box cover sub ass 69700028 ain Board 69700029 lectric Box Ass 69700030 erminal Board lt D z 60 c O O o ol OIO 5 o 2 o a o 2 e o lt gt Q lt Bid 8 Bm TM 1 SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTED SYSTEM COMPONENTS MR12C1H Exploded View 85 MR12C1H Parts List 86 6 69700016 Temperature Sensor for Discharge Gas 8 69700032 Motor suport spot welding sub assy 9 697000331 Condenser Ass Drainage Plug Chassis Sub ass Main Board NOTES 7 FRIEDRICH 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 Prin
4. Replace the protector The torque of the swing motor is not enough The swing fan does not run B wrong connection First check whether the connection is wrong If no replace the parts The controller is damaged 1C2003 is damaged the swing relay can not close eto 47 48 In cool heat mode the outdoor unit and compressor will not run Water leakage Abnormal sound and shake Controller malfunction IC20 103 broken creepage of parallel capacitor of relay loop relay is bro ken etc Troubleshooting m Change controller Wire loose or wrong connection Correctly wire according to the drawing Improper setting of temperature Drainage pipe blocked or broken p Adjust setting temp Change drainage pipe Wrap of refrigerant pipe joint is not close enough __ Re wrap and make it tight Fan of indoor unit contacts other parts Adjust fan location Foreign object in indoor unit Take out the foreign object Compressor shakes too much Adjust support washer of compressor and N tighten loosen screws Touch of pipeline of outdoor unit Separate the touching pipeline Touch of inner plates
5. Connect the charge hose which you dis con nected from the vacuum pump to the valve at the bottom of the cylinder f you are using a gas cylinder also use a scale and reverse the cylinder so that the sys tem can be charged with liquid 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air Be careful of the liquid refriger ant The procedure is the same if using a gas cylinder 3 Open the valve Lo side on the charge set and charge the system with liquid refrigerant If the system can not be charged with the spec ified amount of refrigerant it can be charged with a little at a time approximately 150g each time while operating the air conditioner in the cooling cycle however one time is not suffi cient wait approximately 1 minute and then repeat the procedure pumping down pin This is different from previous procedures Because you are charging with liquid refrigerant from the gas side absolutely do not attempt to charge with larger amounts of liquid refrigerant while operating the air conditioner 4 Immediately disconnect the charge hose from the 3 way valve s service port Stopping partway will allow the gas to be dis charged f the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose
6. connect high Protective apacity negative Main relay ground wire tube terminal oe o 4 V a i vp u e en ing o Zi 2 7 i tabilized voltag Terminal of Discharge Terminal of Protective erminalof Terminal of Slug of on off High frequency block 7805 compressor terminal of outdoor pipe tube power lead in communication wire power IPM module overload compresso temperature wire and protector neutral wire Terminal of power utdoor ambient lead in wire and temperature live wire sensor e BOTTOM VIEW Ems 21 Function and Control 6 Function and Control 6 1 Remote Control Operations Note Only name different between X Fan and Blow but the function is the same START STOP HEE Un A Ww Press to start or stop operation v Press to decrease temperature setting A Press to increase temperature setting FAN AUTO Press to set fan speed MODE Press to select operation mode AUTO COOL DRY FAN HEAT SENSOR CLOCK Press it set clock TIMER ON Press it to set auto on timer AIR SWEEP Press it set swing angle EXTEND TEMP TIMER OFF Press it to set auto off timer TURBO SLE
7. 5 3 Printed Circuit Board Indoor Unit 1 Control PCB TOP VIEW CF1 1 UHITE er T10AL 250V C H T3 15AL 2500 Cheat TR_OUT c12 L 034 07 85 RE pli 037 ma els xS 5 8 5 a C31 C4 R R9 C30 GR T8097 za Mis 4 us 24 C 2 sej 3b 90 ey gt T na dat SHING UD Schematic Diagram E Interface of neutral wire Transformer input ot ini 20 d YK CC N 8 DL DSD lt a nm Interface of PG motor Auto button Feedback from PG motor Up amp Down swing Jumper cap Indoor temperature sensor cico ooc RWIN Pipe temperature sensor DISP 1 DISP 2 display interface Protective tube Communication interface Schematic Diagram Outdoor Unit 1 115V Control PCB TOP VIEW Terminal of jump wire live wire and neutral wire Neutral wire terminal 4 joint of 4 way valve AC N3 External connect high erminal of jumper AC L2 joint capacity positive terminal _ 8 wire neutral wire AC L3
8. 1 Tighten connect screw 2 Stick absorbing clay between plates Louver of outdoor unit touched outer case Adjust location of louver Abnormal sound inside compressor Change compressor If malfunction occurs corresponding code will display and the unit will resume normal until protection or malfunction disappears Indicator display of outdoor unit Yellow indicator blinks for once Le _ Yellow indicator blinks for twice Compressor stars normal Defrosting normal display of indoor unit Yellow indicator blinks for 3 times Anti freezing protection normal display of indoor unit Yellow indicator blinks for 4 times IPM protection Yellow indicator blinks for 5 times m Overcurrent protection Yellow indicator blinks for 6 times Overload protection Yellow indicator blinks for 7 times Exhaust protection Overlod protection of compresoor Yellow indicator blinks for 8 times m Red indicator blinks for once M Red indicator blinks for twice m Exhaust temp dropped frequency temp Red indicator blinksfor 3 times Tubetemp dropped frequency temp Red indicator blinks for 4 times T tube in lt dropped frequency temp Red ind
9. 15 time for compressor stopping enough is compressor broken Power on the unit Is stop time of the compressor N Restart it up after 3 minutes longer than 3 minutes Does startup fail Are the wires for the compressor connected N Connect the wires as per the correctly Is connection sequence right connection diagram Replace the control panel AP1 If the fault is eliminated N v Replace the compressor Ya End 57 58 Troubleshooting 5 Out of step diaanosis for the compressor AP1 hereinafter refers to the control board of the outdoor unit Mainly detect e Whether the unit voltage is too high e Whether the work voltage is too low Out of step occurs once the unit is powered on Is stop time of the compressor longer than 3 minutes Are the wires for the compressor connected correctly Is connection sequence right Is the connection made in clockwise direction Connect the M wires correctly Replace the control panel AP1 N If the fault is eliminated N Replace the compressor Com Out of step occurs in operation 5 the outdoor unit blocked by foreign objects Is the outdoor fan working normally Replace the control panel AP1 If the fault is eliminated N Ee Replace the
10. 5 Mount the valve stem nuts and the service port nut Use torque wrench to tighten the service port nut to a torque of 1 8 kg m Be sure to check for gas leakage 73 Removal Procedure 10 Removal Procedure 10 1 Removal Procedure of Indoor Unit Procedure N Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Image shown here is indicative only Actual product you receive may differ 1 Remove front panel pane Open the front panel and slightly pull it to remove it filter 2 Remove guide louver Push out the shaft sleeve and slightly bend the guide louver to remove it guide louver 3 Remove electirc box cover gt 4 Unscrew the screw fixing the electric box cover to remove it 74 Removal Procedure clasps temp sensor 4 Remove front case Unscrew the 6 tapping screws fixng the front panel and turn the front case backward to remove it clasps 5 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 screw 6 Remove evaporator Unscrew the screws on the rear pipe cardplate and then remove the cardplate 75 Removal Procedure SCrew 7 Remove motor and cross flow fan Unscrew the screws fixing the motor press plate of motor and then the screws connec
11. kQ F kQ 2 853 500 68 98 000 138 18 340 208 4 154 0 199 800 70 93 420 140 17 650 210 4 609 1 750 000 72 89 070 142 16 990 212 4 469 3 703 800 73 84 950 144 16 360 214 4 334 5 660 800 75 81 050 145 15 750 216 4 204 7 620 800 77 77 350 147 15 170 217 4 079 9 580 600 79 73 830 149 14 620 219 3 958 10 548 900 81 70 500 151 14 090 221 3 841 12 516 600 82 67 340 153 13 580 223 3 728 14 486 500 84 64 330 154 13 090 225 3 619 16 458 300 86 61 480 156 12 620 226 3 514 18 432 000 88 58 770 158 12 170 228 3 413 19 407 400 90 56 190 160 11 740 230 3 315 21 384 500 9 53 740 162 11 320 232 3 220 23 362 900 93 51 410 163 10 930 234 3 129 25 342 800 95 49 190 165 10 540 235 3 040 27 323 900 97 47 080 167 10 180 237 2 955 28 306 200 99 45 070 169 9 827 239 2 872 30 289 600 100 43 160 171 9 489 241 2 792 32 274 000 102 41 340 172 9 165 243 2 715 34 259 300 104 39 610 174 8 854 244 2 640 36 245 600 106 37 960 176 8 555 246 2 568 37 232 600 108 36 380 178 8 268 248 2 498 39 220 500 109 34 880 180 7 991 250 2 431 41 209 000 111 33 450 181 1 726 252 2 365 43 198 300 113 32 090 183 7 470 253 2 302 45 199 100 115 30 790 185 7 224 255 2 241 46 178 500 117 29 540 187 6 998 257 2 182 48 169 500 118 28 360 189 6 761 259 2 124 50 161 000 120 27 230 190 6 542 261 2 069 52 153 000 122 26 150 192 6 331 262 2 015 54 145 400 124 25 110 194 6 129 264
12. 2 lt T ting lt T settingt 2 medium speed Ting S Tsetting 2 low speed Sending fan mode Tring gt T settingt 4 high speed Tsettingt 2ST ring lt T setting 4 medium speed Tring lt setting 2 low speed Moisture removal mode force to be set as the low speed Heating mode TringS Tsettingt 1 high speed Tyettingt 1 Tring T settingt 5 medium speed Tring2Tsettingt 2 low speed 7 Buzzer Control The buzzer will send a Di sound when the air conditioner ispowered up or received the information sent by the remote control or there is a button input the single tube cooler doesn t receive the remote control ON signal under the mode of heating mode 8 Auto button If the controller is on it will stop by pressing the button and if the controller is off it will be automatic running state by pressing the button swing on and light on and the main unit will run based on the remote control if there is remote control order 9 Up and Down Swinging Control When power on the up and down motor will firstly move the air deflector to o counter clockwise close the air outlet After starting the machine if you don t set the swinging function heating mode and auto heating mode the up and down air deflector will move to D clockwise under other modes the up and down air deflector will move to L1 If you set the swing function when you start the machine then the wind blade will swing between L and D The air deflector has 7 swing s
13. 48 31 380 118 5 809 189 1 497 259 0 492 50 29 900 120 5 589 190 1 451 261 0 480 52 28 510 122 5 379 192 1 408 262 0 467 54 27 180 124 5 197 194 1 363 264 0 456 35 25 920 126 4 986 196 1 322 266 0 444 37 24 130 127 4 802 198 1 282 268 0 433 39 23 600 130 4 625 199 1 244 270 0 422 61 22 530 131 4 456 202 1 207 271 0 412 63 21 510 133 4 294 203 1 171 273 0 401 64 20 540 135 4 139 205 1 136 275 0 391 66 19 630 136 3 990 207 1 103 277 0 382 64 Troubleshooting Troubleshooting Guide Appendix 2 form for indoor outdoor unit s tube temperature sensor numerical value of resistance Temp Resistance Temp Resistance Temp Resistance Temp Resistance F F kQ F F kQ 2 181 400 68 25 010 138 5 130 208 1 427 0 171 400 70 23 900 140 4 948 210 1 386 1 162 100 72 22 850 142 4 773 212 1 346 3 153 300 73 21 850 144 4 605 214 1 307 5 145 000 75 20 900 145 4 443 216 1 269 7 137 200 77 20 000 147 4 289 217 1 233 9 129 900 79 19 140 149 4 140 219 1 198 10 123 000 81 18 130 151 3 998 221 1 164 12 116 500 82 17 550 153 3 861 223 1 191 14 110 300 84 16 800 154 3 129 225 1 099 16 104 600 86 16 100 156 3 603 226 1 069 18 99 130 88 15 430 158 3 481 228 1 039 19 94 000 90 14 790 160 3 364 230 1 010 21
14. air temperature becomes higher than a certain level model by model 2 In case the operation mode is heating The current droops when outdoor air temperature becomes higher than a certain level model by model 6 9 Freeze up Protection Control Outline 33 Function and Control During cooling operation the signals being sent from the indoor unit allow the operating frequency limitation and then prevent freezing of the indoor heat exchanger The signal 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 34 Heat exchanger thermistor temperature Return Reset zone Up zone Keep zone Drooping zone Stop zone Function and Control PI control OHz 50sec 600sec 50sec p a ON Compressor ON Four way valve ON Fan 450pps 350pps 450pps Electronic expansion valve opening Initial opening 6 12 Fan Control Outline Fan control is carried out according to the following priority Fan ON control for electric component cooling fan Fan control when defrosting Fan OFF delay when stopped ON OFF control in cooling operation Tap control when drooping function is working Fan control in forced operation Fan control
15. and a gas cylinder to the service port of the Gas side valve Leave the valve on the gas cylinder closed 3 Air purging Open the valves on the gas cylinder and the charge set Purge the air by loosening the flare nut on the liquid side valve ap proximately 45 or 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 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 cm g 70 6 Disconnect the charge set and the gas cylinder and set the Liquid side and Gas side valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 8 Mount the valve stem nuts and the service port nut Use torque wrench to tighten the service port nut to a torque of 1 8 kg m Be sure to check for gas leakage CAUTION Do not leak the gas in the air during Air Purging Balance Refrigerant of the 3 way Valve Gas leakage zi Troubleshooting Outdoor unit Procedure 1 Confirm that both the 2 way and 3 way valves are set to the back seat 2 Connect the charge set to the 3 way valve s port Leave the valve on the charge set closed Connect the charge hose to the service port 3 Open the valve Lo s
16. 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 work with a qualified assistant whenever possible Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for leaks flushing etc Make sure to follow all safety precautions and to use proper protective safety aids such as gloves safety glasses clothing etc Failure to follow proper safety procedures and or these warnings can result in serious injury or death MECHANICAL HAZARDS e Extreme care proper judgment and all safety procedures must be followed when testing troubleshooting handling or working around unit with moving and or rotating parts Be careful when handling and working around exposed edges and corners of the sleeve chassis and other unit components especially the sharp fins of the indoor and outdoor coils Use proper and adequate protective aids such as gloves clothing safety glasses etc Failure to follow proper safety procedures and or these warnings can result in serious injury or death PROPERTY DAMAGE HAZARDS FIRE DAMAGE HAZARDS e Read the Installation Operation Manual for the air co
17. in and poor connection E Check if the plug is properly plugged in and make the loose contact firm Fuse of controller burnt out Change controller fuse The transformer connection is loose or has bad contact or the transformer has malfunction Fasten the wiring measure the output M voltage of the transformer if it is incorrect change the transformer __ Controller is broken fa Check remote controller The remote contro ller signals after it is powered the buzzer will sound unless it has malfunction Remote controller is short of power Change batteries Remote controller malfunction First press the manual switch button AUTO if there is no response check based on the above methods If it runs Receiver loose or poor connection normally after pressing the button check again whether the installation position and the connection wire of the reception Receiver is broken head is correct If it is correct then repla ce the receiver or the remote controller Power voltage is too low Check the voltage If it is lower than 10 of the rated voltage check the cause improve the power supply condition and add the stabilized voltage power supply 45 Troubleshooting J Improper set of temperature Adju
18. in indoor outdoor unit silent operation Fan control in powerful mode Fan control in normal 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 O 00 WN 2 When Heating Operation When the outdoor air temperature is higher than 39 F the fan tap must be turned to L only for heat pump model 35 Installation Manual 7 Installation Manual 7 1 Notices for installation 36 __importantNotices 1 The unit installation work must be done by qualified personnel according to the local rules and this manual 2 Before installating please contact with local authorized maintenance center if unit is not installed by the authorized maintenance center the malfunction may not solved due to discommodious contacts 3 When removing the unit to the other place please firstly contact with the authorized Maintenance Center in the local area 4 The appliance must be positioned so that the plug is accessible 5 After pull out the power plug then make the appliance operation again to avoid the icing of outdoor unit damage axial flow fan should electrify the appliance but not operation for 4 hours for warm up purpose only for Heat Pump models Basic Requirements For Installation Positio
19. manifold valve to charge end of low pressure valve both high low pressure valves must be tightly shut 2 Connect joint of charging hose to vacuum pump 3 Fully open handle handle of Lo manifold valve Liquid pipe 4 Open the vacuum pump to evacuate At the beginning slightly KO PEQ gauge loosen joint nut of low pressure valve to check if there j is air coming inside If noise of vacuum pump has been changed the reading of multimeter is 0 Then tighten the nut to 5 Keep evacuating for more than 15mins and make sure the reading of multi meter is 1 0 x 10 pa 76cmHg 6 Fully open high low pressure valves Remove charging hose from charging end of low pressure valve 8 Tighten bonnet of low pressure valve As shown in Fig 10 Fig 10 N Condensate drainage of outdoor unit not for cooling only The condensate and defrosting water formd during heating in the outdoor unit can be properly discharged by drainage pipe Installation method set the drain connection in 25 hole of the chassis has been installed and then connect drainage pipe with drain nozzle so that condensate and defrosting water can 6 Chassi Chassis be properly discharged Drain connection NEE 9 5 Ee 2 mal 5 41 Installation Manual 7 5 Check after Installation and Operation Test Check after Installation Items to be checked Possible malfunction Has it been fixed firmly T
20. not available FAN to check whether the operation is normal or not 42 Installation Manual 7 6 Installation and Maintenance of Healthy Filter Optional Installation of Healthy Filter 1 Lift up the front panel from the two ends of it as the arrow direction shown Then pull the air filter out as shown Fig a 2 Attach the healthy filter onto the air filter as shown in Fig b 3 Mount the air filter properly along the arrow direction in Fig c and then close the panel cover Cleaning and Maintenance Remove the healthy filter before cleaning and re install it after clean according to the installation instruction but can t with brush or hard things After washing be sure to shake off remaining water and dry in the shade Service Life 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 eThis supplementary instruction is provided for reference to the unit with healthy filter If the graphics provided herein is different from the physical goods the latter one shall prevail The quantity of healthy filters shall be based on the actual delivery 43 Troubleshooting 9 Troubleshooting 9 1 Precautions before Performing Inspection or Repair Be cautious during installation and maintenance Do operation following the regulations to avoid electric shock and
21. to under initially heating mode the indoor ambient temperature before the command to start the compressor is performed according to the program or after the unit is withdrawn from defrost the indoor ambient temperature before the defrost symbol is cleared Total current up and frequency down protection If the total current Itotai SW frequency rise will be allowed if 2X frequency rise will not be allowed if 2Y the compressor will run at reduced frequency and if 2Z the compressor will stop and the outdoor fan will stop with a time lag of 30s 4 Fan Mode Under the mode the indoor fan will run at preset speed and the compressor the outdoor fan the four way valve and the electric heater will stop Under the mode temperature can beset within a range of 61 F 86 F 5 AUTO Mode Working conditions and process of AUTO mode Under AUTO mode standard cooling temperature Tpresetis 77 F and standard heating temperature Tpreset is 64 4 a Once energized if Tamb s68 F the unit will be started under heating mode if 68 F lt Tamb lt 77 F the unit will run under fan mode and the operation indicator lamp will be bright and if Tamb277 F the unit will be started under cooling mode 28 Function and Control a Under AUTO mode if Tamb2Topreset is detected the unit will select to run under cooling mode in which case implicit preset temperature is 77 F if TambSTpreset28 F the compressor
22. valve and unsolder 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 9 Remove compressor Unsolder the 2 weld spots of the compressor and unscrew the 3 feet nuts and remove the was heres fixing the compressor to remove it Removal Procedure electronic expannsion valve liquid valve gas valve compressor foot 79 SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTED SYSTEM COMPONENTS MWO09C1H MW12C1H Exploded Diagram 80 MWO9C1H Parts List 6 __ 69700105 GuideLouver 8 9 69700108 Helicoid tongue Cross Flow Fan Rear Case ass Fan Motor Electric Box Remote Control 81 MW12C1H Parts List 82 e 69700105 Guide Louver Oo 9 69700108 Helicoiodtongue 2 Rear Case ass 3 Fan Motor 4 Motor MP24AA 5 Crank 6 Display Board 7 mbient Temperature Sensor 8 ransformer 9 lectric Box Ass 0 lectric Box 1 69700130 4 bit Terminal Board 2 Main Board 3 Jumping Connector 4 ube Sensor 20K black 5 Electric Box Cover1 6 Shield cover of Electric Box sub ass 7 Remote Controller 8 Electric Box Cover2 9 Screw Cover N SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTED SYSTEM COMPONENTS MRO9CTH Exploded Diagram N N
23. 1 963 55 138 300 126 24 130 196 5 933 266 1 912 57 131 500 127 23 190 198 5 746 268 1 863 59 125 100 130 22 290 199 5 565 270 1 816 61 119 100 131 21 430 202 5 390 271 1 770 63 113 400 133 20 600 203 5 222 273 1 725 64 108 000 135 19 810 205 5 060 275 1 682 66 102 800 136 19 060 207 4 904 277 1 640 9 5 2 way 3 way Valve Appearance Troubleshooting 2 way Valve Liquid Side 3 way Valve Gas Side Hexagonal wrench 4mm Flare nut Open position Closed position ipin connection To outdoor unit Valve cap Flare nut iping connection Open position Closed position Pin Service Service port cap port To outdoor unit Servicing Works Shaft position Shaft position Service port Shippin Closed Closed Closed pping with valve cap with valve cap with cap Air purging Closed Closed Open 1 Installation clockwise clockwise with vacumm pump Open Open Closed O t PE with valve cap with valve cap with cap Pumping down Closed Open Open 2 Transfering clockwise counter clockwise connected 2 us gauge Evacuation Open Open Open 3 Servicing Gas charging Open Open Open 4 Servicing with oe cylinder Pressure check Open 9 Servicing Open Open with charging cylinder Gas releasing Open 6 Open Open with charging cylinder Troubleshooting Air puraina CAUTION
24. 21 15 21 Maximum heating 24 21 15 5 Minimum heating The operating temperature range outdoor temperature for cooling unit is 70 F 115 F for cooling and heating unit is 5 F 115 F Troubleshooting 3 Hiah temperature and overload protection diagnosis AP1 hereinafter refers to the control board of the outdoor unit Mainly detect 015 outdoor ambient temperature in normal range Are the outdoor and indoor fans operating normally is the heat dissipation environment inside and outside the unit is good Overheat and high temperature protection Y Normal protection please operate it after the Is outdoor ambient temperature higher than 53 outdoor ambient temperature is normalized 4 N 20 minutes after the complete unit is powered off Improve the heat Is heat dissipation of the indoor unit Y dedo environment gt i 2 and outdoor unit abnormal of the unit 1 Check if the fan terminal O FAN is connected correctly N 2 Resistance between any two terminals is measure by an ohm gauge and should be less than 1K Ohm Does the outdoor fan work normally Y Replace the fan capacitor C1 Replace the control panel AP1 Replace the outdoor fan End 56 Troubleshooting 4 Fail for start up followina AP1 for outdoor unit control board Mainly detect e Whether the compressor wiring is connected correct
25. 89 170 9 14 180 162 3 252 232 0 983 23 84 610 93 13 590 163 3 144 234 0 956 25 80 310 95 13 040 165 3 040 235 0 930 27 76 240 97 12 510 167 2 940 237 0 904 28 72 410 99 12 000 169 2 844 239 0 880 30 68 790 100 11 520 171 2 192 241 0 856 32 65 370 102 11 060 172 2 663 243 0 833 34 62 130 104 10 620 174 2 577 244 0 811 36 59 080 106 10 200 176 2 495 246 0 770 37 56 190 108 9 803 178 2 415 248 0 769 39 53 460 109 9 420 180 2 339 250 0 746 41 50 870 111 9 054 181 2 265 252 0 729 43 48 420 113 8 705 183 2 194 233 0 710 45 46 110 115 8 370 185 2 125 255 0 692 46 43 920 117 8 051 187 2 059 257 0 674 48 41 840 118 7 145 189 1 996 259 0 658 50 39 870 120 7 453 190 1 934 261 0 640 52 38 010 122 7 173 192 1 875 262 0 623 54 36 240 124 6 905 194 1 818 264 0 607 55 34 570 126 6 648 196 1 736 266 0 592 57 32 980 127 6 403 198 1 710 268 0 577 59 31 470 130 6 167 199 1 658 270 0 563 61 30 040 131 5 942 202 1 609 271 0 549 63 28 680 133 5 726 203 1 561 273 0 535 64 27 990 135 5 519 205 1 515 215 0 521 66 26 170 136 5 320 207 1 470 277 0 509 65 Troubleshooting Troubleshooting Guide Appendix 3 form for indoor outdoor unit s air exhaust temperature sensor numerical value of resistance Temp Resistance Temp Resistance Temp Resistance Temp Resistance F kQ F kQ F
26. Do not leak the gas in the air during Air puraing Liquid side uu NE Procedure 1 Connect the charge hose from the manifold valve to the ser vice port of the gas side packed valve 2 Connect the charge hose to the port of the vacuum pump 3 Open fully the low pressure side handle of the gauge mani fold valve 4 Operate the vacuum pump to begin evacuating Perform evacuating for about 15 minutes if the piping length is 20 meters 15 minutes for 20 meters assuming a pump capacity of 27 liters per minute Confirm that the compound pressure gauge reading is 104 kPa 76 cmHg 5 Close the low 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 nut 68 Outdoor unit CAUTION If gas leakage are discovered in step 5 above take the following mesures If the gas leaks stop when the piping connections are tightened further continue working from step 6 If the gas leaks do not stop when the connections are retightened repair the location of the leak discharge all of the gas through the service port and then recharge with the specified amount
27. EP LIGHT Press it to turn on off the light Remote control works with cool and Heat Pump Models 22 Function and Control ON OFF Press this button to start the unit operation Press this button again to stop the unit operation MODE Each time you press this button a mode is selected in a sequence that goes from AUTO COOL DRY FAN and HEAT as the following AUTO gt COOL gt DRY De FAN BHEAT td Note Only for models with heating function 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 Press this button to increase set temperature Holding down button above 2 seconds rapidly increases set temperature In AUTO mode set temperature is not adjustable Press this button to decrease set temperature Holding down button above 2 seconds rapidly decreases set temperature In AUTO mode set temperature is not adjustable A FAN Every press of FAN button changes the fan speed in the following order kans 48 adl J a Low speed am Medium speed 4 High speed Ci 51 Every pressof the button changes the sving anglein the follow order N I ed OFF 1 This remote controller is universal If any command gt or I is sent out the unit will carry out the command as 7 21 ind
28. Power Level Dimension WxHxD mm EN 33 1 4 X Z 7 8 X 7 1 8 Dimension of Package LxWxH 36X10X14 Net Weight Gross Weight ERI o me 7 Remarks Rating conditions are Cooling Indoor air temperature 80 F D B 67 F W B Outdoor air temperature 95 F D B 75 F W B Heating Indoor air temperature 70 F D B 60 F W B Outdoor air temperature 47 F 43 F W B Specifications 12K of 115V Models Model ido Unit 2 SYSTEM Frequency Inverter different Compressor speed Total Capacity Inverter different Compressor speed Power Input Inverter different Compressor speed p Air Flow Volume w cw 25 __ L a Indoor unit Fan Motor Diametertengh 3654 Evaporator Aminumfin coppertube mn Coil EN I xheight ma width L 25 4X1X10 5 Swing Model 2 wor o a S a T A PCB EN uz Level Sound Power Level Dimension WxHxD mm in 33 1 4 X 10 7 8 X 7 1 8 Dimension of Package LxWxH 36X10X14 Net Weight Gross Weight is gt Remarks Rating conditions are Cooling Indoor air temperature 81 F 66 F W B Outdoor air temperature 95 F 75 F W B Heating Indoor air temperature 70 F D B 61 F W B Outdoor air temperature 46 F 43 F W B Specifications Raw a Power new 89 Throttling Method Electron
29. Service and Parts Manual 3 FRIEDRICH 2011 SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTED TYPE Models Indoor Unit MWO09C1H MW12C1H Outdoor Unit MRO9C1H MR12C1H Table of Contents Model and product COTE a NET 3 Summary and features mE 4 4 Safety Precautions n n 5 7 2 Specifications Tn ee UE 8 2 Specifications CMT 8 11 2 2 Operation Date eene nennen 12 2 3Expanded capacity data tables for both cooling and heating 13 24 Operation Characteristic Curve ee 14 2 5 Noise criteria curve tables for both models 15 3 Construction VIEWS wenende ea eee ad ie 16 3 1 Indoor Unit eenen nana 16 3 2 OutdooF RTT waive E ER t 16 4 Refrigerant System Diagram HUN 17 5 Schematic Diagram C de 18 21 5 4 Electrical Date eene arenden dende dader en sues sur pen sepan res ed dekh 18 5 JBlectncalWifingesenenegetsanr en teint een 18 19 53 Printed Circuit Board 20 21 6 Function and Control sss er tho ete 22 35 7 Installation Manual eria esiste vate ee nn hand 36 43 8 Troubleshooting E aM Pic ri en Re 44 72 9 4 Precautions before Performing Inspection or Repair ate eneen ee 44 9 2 Conhinnationt 99i ee rer 44 9 3 Judgement by Flashing LED of Indoo
30. 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 equipment with the power on to the unit Do not spray or pour water on the return air grille discharge air grille evaporator coil control panel and sleeve on the room side of the air conditioning unit while cleaning Electrical component malfunction caused by water could result in electric shock or other electrically unsafe conditions when the power is restored and the unit is turned on even after the exterior is dry Never operate the A C unit with wet hands Use air conditioner on a single dedicated circuit within the specified amperage rating Use on a properly grounded outlet only Do not remove ground prong of plug Do not cut or modify the power supply cord Do not use extension cords with the unit Follow all safety precautions and use proper and adequate protective safety aids such as gloves goggles clothing adequately insulated tools and testing equipment etc Failure to follow proper safety procedures and or these warnings can result in serious injury or death REFRIGERATION SYSTEM REPAIR HAZARDS e Use approved standard refrigerant recovering procedures and equipment to relieve pressure before opening system for repair Do not allow liquid refrigerant to contact skin Direct contact with liquid refrigerant
31. anual and H work described above then energize and start normally Y gt between AP1 and COMP is loose and if the connection order is correct the unit Replace the control panel AP1 Connect the control panel AP1 and compressor COMP correctly according to the Electrical Wiring Diagram Then energize and start the unit If the connection between AP1 and COMP is unsecure or the connection order is wrong If the unit can work normally Use ohmmeter to measure the resistance between the three terminals on compressor COMP and compare the measurements with the compressor resistance on Service Manual Replace the compressor COMP If the resistance is normal Use ohmmeter to measure the resistance between the two terminals of compressor COMP and copper tube Resistance higher than 500MQ Replace the control panel AP1 54 Notices for use Anti cool wind function In Heat mode under the following three kinds of state if indoor heat exchanger doesn t arrive at certain temp indoor fan will not act in order to prevent cool wind blowing within 2 mins 1 Heating starts 2 After Auto Defrost finished 3 Heating under the low temperature X Working temperature range Indoor sideDB WB C Outdoor sideDB WB C Maximum cooling 35 24 48 30 Minimum cooling
32. ature and outdoor ambient temperatur is displayed circularly Not displaying icon is defaulted During operation of TEMP button the set temperature is always displayed Note Outdoor ambient temperature is only displayed for some models Function and Control TURBO Press this button in COOL or HEAT mode 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 SLEEP 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 or DRY mode to maintain the most comfortable temperature for you LIGHT Press LIGHT button turns on off the display s light If the light is tunrned is displayed If the light is tunrned off disappears and About lock Press and buttons simultaneously to lock or unlock the keypad If the remote controller is locked is displayed In this case pressing any button blinks three times and About switch between fahrenheit and cenrigrade At unit OFF press MODE and buttons simultaneously to switch between and F 25 Function and Control Notes t should be kept 1m away from the TV set or stereo sound sets f the wireless remote controller does not operat
33. b ft n 7 06 11 147 X 9 52 22 8 25 8 22 KZ 36 9 40 6 Spanner X Ja Torque 443 47 9 NOTE Firstly connect the connection pipe to indoor unit then to outdoor unit pay attention to the piping bending do not damage the connection pipe ensure the joint nut is adequately tightened otherwise it may cause leakage 40 Installation Manual 7 4 Installing Outdoor Unit Electric wiring 1 Disassemble the cable cross plate sub assy on the outdoor unit right side plate 2 Take off wire clamp Connect and fix power connect Cable Cross Plate sub assy cord for cooling and heating unit connect and fix power connect cord and signal control wire to terminal of line lt For 115V Uints bank Wiring should fit that of indoor unit 3 Fix the power connection cable with wire clamp for cooling and heating unit use the wire clamp to fix the power connection cable and the signal control wire then connect the corresponding connector 4 Ensure wire has been fixed well 5 Install the cable cross plate sub assy Indoor unit connection Indoor unit NOTE connection Power e Wrong wiring may cause spare parts malfunction Note Terminal 2 is the communication connection After the cable fixed make sure there should be a free space between the connection and connection and fixing place on the lead wire Air purging and leakage test Connect charging hose of
34. casualty or even death due to drop from high altitude Static maintenance is the maintenance during de energization of the air conditioner For static maintenance make sure that the unit is de energized and the plug is disconnected Dynamic maintenance is the maintenance during energization of the unit Before dynamic maintenance check the electricity and ensure that there is ground wire on the site Check if there is electricity on the housing and connection copper pipe of the air conditioner with voltage tester After ensure insulation place and the safety the mainte nance can be performed Take sufficient care to avoid directly touching any of the circuit parts without first turning off the power At times such as when the circuit board is to be replaced place the circuit board assembly 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 Precautions when inspecting the control section of the outdoor unit Troubleshooting procedure large capacity electrolytic capacitor is used in the outdoor unit controller inverter Therefore if the power supply is turned off charge charging volt 2 Judgement by Flashing LED of Indoor Outdoor Unit age DC280V to 380V remains and discharging takes a lot of time After 3 How to Check simply the main part turning off th
35. cification The outdoor fan motor is damaged m Replace the fan motor In the cooling and heating mode the the correct connection based on the circuit compressor runs Wrong connection drawing but the outdoor fan does not run The outdoor fan capacitor is damaged Replace the fan capacitor Malfunction of compressor Replace the compressor When cooling or Breakage of running capacitor of Reblace th it heating outdoor compressor pe ii hc cca cad fanruns compr essor The voltage is too low or too high doesnt g g L m Manostat is recommended Wrong wire connection m Connect the circuit diagram correctly Use the multimeter to check whether the contact of m the compressor is on when it is not overheated If it is not on then replace the protector SHOP ENOUGH OF Ie tae Adjust the volume of the refrigerant The capillary is blocked and the temp Replace the capilla The compressor is erature rises p too hot and leads to the action of the The compressor does not run smoothly protector or is stuck The air discharge valve is Replace the compressor damaged The protector itself has malfunction The protector itself has malfunction
36. compressor Check if the fan terminal N O FAN is connected correctly Y Remove foreign objects Y Replace the fan capacitor C1 Replace the outdoor fan End Troubleshooting 6 Overload and air exhaust malfunction detect followina AP1 for outdoor unit control board Mainly detect e Whether the electronic expansion valve is connected well or not Is electronic expansion valve damaged ls refrigerant leaked 20 minutes after the complete unit is powered off Is the terminal FA for the electronic expansion valve connected correctly Connect the wires correctly Y v Resistances between the first four pins close to the terminal hole and the fifth pin are almost the same less than 100 ohm Replace the electroni expansion valve N Replace the control panel AP1 eliminated N v Coolant leakage refilling the coolant um End N 59 Troubleshooting 7 Power factor correction PFC fault a fault of outdoor unit AP1 hereinafter refers to the control board of the outdoor unit Mainly detect Check if the reactor L of the outdoor unit and the PFC capacitor are broken The failure diagnosis process is as follows Check wiring of the reactor L of the outdoor unit and the PFC capacitor Replace it as per the wiring diagram and reconnect the w
37. ction Press the remote button MODE then select and show inthe following ways AUTO COOL DRY FAN HEAT AUTO 3 Temperature Setting Option Button Each time you press the remote button TEMP or TEMP the setting temperature will be up or down by 34 F Regulating Range 61 F 86 F the button is useless under the AUTO mode 4 Time Switch You should start and stop the machine according to the setting time by remote controller 5 SLEEP State Control a When the air conditioner is under the mode of COOL DRY and the SLEEP mode has been set well after the SLEEP state keeps about 1 hour the pre setting T will raise 34 F and it will raise 34 F again after 2 hours so it raise 36 F in 2 hours then it will run on at the setting temperature and fan speed b When the air conditioner is under the mode of HEAT and the Timer has been set well after the SLEEP state keeps about 1 hour the pre setting T will reduce 34 and it will reduce 34 F again after 2 hours so it reduce 36 F in 2 hours then it will run on at the setting temperature 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 TingZ T settingt 2 high speed Tseting
38. ction of mainboard of outdoor unit or wrong wire connection of indoor and outdoor unit Please ensure that there is no malfunction of mainboard of indoor unit or wrong wire connection of indoor and outdoor unit After removing the malfunction of indoor unit remove the malfunction of outdoor unit 2 Test the voltage of pin 1 and pin 2 of U132 with universal meter voltage of both sides of R135 The voltage should be variable Test 10 Test the voltage of pin 3 and pin 4 of U132 with universal meter voltage of both sides of R1312 The voltage should be variable Test 15 Otherwise there is malfunction of mainboard of outdoor unit 3 Test the voltage of pin 3 and pin 4 of U131 with universal meter voltage of both sides of R134 The voltage should be variable test 11 Test the voltage of pin 1 and pin 2 of U132 with universal meter voltage of both sides of C134 The voltage should be variable test 12 Otherwise there is malfunction of mainboard of outdoor unit 4 Test the voltage between pin 1 of R135 white and pin 1 of U4 The voltage should be variable Test voltage between pin1 of R131 white and pin 1 of U4 with universal meter The voltage should be variable Otherwise there is malfunction of mainboard of outdoor unit 63 Troubleshooting Troubleshooting Guide Appendix 1 form for indoor outdoor unit s ambient sensor numerical value of resistance
39. e length m 110 Conditions 105 Indoor DB80 F WB67 F Outdoor DB95 F WB75 F Indoor air flow TURB 100 i 95 90 85 i Maximum Elevation 7 6 80 H 01 5 3 04 5 6 07 5 Total Elevation m 9 0 13 Specifications Operation Characteristic Curve Cooling Current A 9 btu unit Conditions Indoor DB80 F WB67 F Outdoor DB95 F WB75 F Indoor air flow TURBO Pipe lengt 7 6m 04 05 06 07 Compressor speed rps 12 btu unit Cooling Current A 14 Conditions Indoor DB80 F WB67 F Outdoor DB95 F WB75 F Indoor air flow TURBO Pipe length 7 6m 01 02 03 04 05 06 07 09 80 0 Compressor speed rps Specifications 2 5 Noise criteria curve tables for both models 09 btu units Indoor side noise when blowing 40 C4 T7 t A w Noise dB A C2 eo Low MiddleH igh Turbo Indoor fan motor rotating speed 12 btu unit Indoor side noise when blowing ays te nn ne LO S Er LE d B Noise dB A O N TETIV cM m A 20 Low MiddleH igh Turbo Indoor fan motor rotating speed Noise dB A Noise dB A 70 70 60 a A 30 20 20 Outdoor side noise 40 60 80 Compressor frequency Hz 20 Outdoor side noise 40 60 80 Compressor frequency Hz 100 100 15 Constrction views 3 Construction V
40. e normally please take 26 Replacement of Batteries 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 Bi 4 Replace the battery cover plate When changing the batteries do not use old or different batteries oO z otherwise it may cause malfunction of the wireless remote control If the wireless remote controller will not be used for a long time please remove batteries to prevent damage from leaking batteries The operation should be performed in its receiving range E VAN the batteries out and replace them after 30 5 If still not operating properly Sketch map tor V replace the batteries replacing batteries Emergency Operation When the wireless remote controller is lost or damaged please use the manual switch on the main unit Operation will be in AUTO mode and the temperature setting or fan speed can not be changed The manual switch can be operated as follow Manual switch To operate Pressing the AUTO STOP button the unit enters into AUTO mode Fig 3 The microcomputer will monitor the room temperature to select the COOL HEAT FAN mode automatically to abtain the comfortable effect To turn off Press the AUTO STOP button to switch the unit off Function and Control 6 2 Description of Each Co
41. e power source if touching the charging section before discharging an electrical shock may be caused Please open the outdoor unit after the unit is power off for 20min 9 2 Confirmation 1 Confirmation of Power Supply Confirm that the power breaker operates ON normally 2 Confirmation of Power Voltage Confirm that power voltage is AG15 10 If power voltage is not in this range the unit may not operate normally 9 3 Judgement by Flashing LED of Indoor Outdoor Unit Trouble shooting is for cooling and Heat Pump models 44 Troubleshooting The breaker trips at once when it is set to ON Measure insulation resistance to grou B nd to see if there is any leakage Trip of breaker or blow lof fuse Air conditioner can not start up The air conditioner does not react after it is powered after the plug is inserted the buzzer does not sound and the remote startup has no response The breaker trips in few minutes when it is set to ON 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 replace the breaker No power B Check power supply circuit Power plug is not well plugged
42. e temperature reaches the stop zone stop the compressor and correct abnormality Drooping zone Start the timer and the frequency will be drooping Keep zone Keep the upper limit of frequency Return Reset zone Cancel the upper limit of frequency 6 8 Input Current Control Outline Detect an input current by the CT during the compressor is running and set the frequency upper limit from such input current In case of heat pump model this control is the upper limit control function of the frequency which takes priority of the lower limit of four way valve activating compensation Detail The frequency control will be made within the following zones 2 Hz drooping 1 0second after After 2 5 seconds rushing in the Ed drooping zone Compressor stops Stop zone Drooping zone Reset zone When a stop current continues for 2 5 seconds after rushing on the stop zone the compressor operation stops If a drooping current is continues for 1 0 second after rushing on the drooping zone the frequency will be 2 Hz drooping Repeating the above drooping continues until the current 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
43. eee TS above Space to the floor The dimensions of the space necessary for correct installation of the appliance including the minimum permissible distances to adjacent structures gt Eos 4 m Space t Air inlet side bi wall ef 1 9 Space to the wall lt 12in side gt RE Air outlet side Installation Manual 7 3 Installing Indoor Unit Installing Mounting Plate 1 Make the mounting plate completely level As the water tray s oulet of the indoor unit is two way type the indoor unit during installation should slightly slant to watert tray s outlet for smooth drainage of condensing water 2 Fix the mounting plate on the wall with screws Where is pre covered with plastic granula 3 Be sure that the mounting plate has been fixed firmly enough to withstand the weight of an adult of 60kg further more the weight should be evenly shared by each screw Con mende middie orit i C Space i Z le slo id k E Sd Space NY to the u to the wall 6 in 6 in above above o d SS A A gt Left PS Right 2 5 in i 2 5 in Rear piping hole Fig 5 Rear piping hole Boring Piping Hole Indoor Outdoor 1 Make the pipin
44. er Air filter were blocked gt gt Clean the filter To set the fan speed to high or Fan speed was set too slow pL middle speed o E Air circulation is insufficient __ Capacitor Replace the capaci Fan rotation speed becomes damage tor low Motor damage Replace the motor The installation position of the amp Good ventilation must be provided for the outdoor unit is not appropriate installation position of the outdoor unit The outdoor temperature is too high Properly install the rainproof plate or the sunproof plate If the maximum cool air still can not meet the requirement it is sug gested to replace the air conditioner The air tight is not h Peopl me si S AUS a p Keep certain air tightness indoors try not to use come in and out too frequently There l electricalappliance with large quantity of heat are heating devices indoors 46 Troubleshooting The indoor fan motor is burned or bre aks or has the heat protector malfun Replace the fan motor or the defective part Lefion SSS The built in heat protector of the motor breaks frequently because the motor is Replace the fan motor The fan does not abnormal run when it is set to supply air Wrong connection Make the correction connection based on the circuit drawing The fan capacitor has open circuit or Replace the fan capacitor of the same type and same is damaged spe
45. ether loose Whether the connection is in correct order Whether the voltage input 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 53 Troubleshooting Fault diagnosis process Energize and switch on Check the supply voltage and Use AC voltmeter to measure the between terminal L His protection voltage between occurs after the iri machine has run for Y terminal L and N ands Pul in N restore it to 210VAC 250VAC 210VAC 250VAC on the wiring a period of time board XT unit Before protection occurs oltage between If the unit can y buc rd of use DC Voltmeter to O measure the voltage work Y capacitor test3 is between the two normally gt ends of electrolytic capacitor on control panel AP1 test3 higher than 250V Please confirm 1 If the indoor and outdoor heat exchangers are dirty If they are obstructed by other objects which affect the heat exchange of indoor and outdoor unit 2 If the indoor and outd
46. g hole 2 5 in in the wall at a slight downward slant to the Wall pipe Seal pad 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 Esp Installing Drain Hose 1 For proper draining the drain hose should be placed at a downward slant wrenched Bent 2 Do not wrench or bend the drain hose or flood its end by water 3 The long drain hose passing through indoor areas should be wrapped with insulation material Connecting Indoor and Outdoor Electric Wires 1 Open the front panel 2 Remove the wiring cover as shown in Fig 6 3 Make the power connection cord and signal control wire only for heat pump unit through the hole in the the back of indoor unit 4 Reinstall the clamp and wiring cover Wiring Cover 5 Recovert he front panel outdoor unit connection 39 Installation Manual NOTE All interconnecting wiring between indoor and outdoor unit must be performed by a a licenced electrical contractor The electric wiring must be correctly connected Improper connection may cause spare parts malfunction Tighten the terminal screws adequately to prevent loosening e After tightening the screws slightly pull the wire and confirm whether it is firm or not e Ensure the electrical connections are properly earthed to prevent electrical shocks e Ensure all wiring connections are secure and the cover plate
47. he unit may drop shake or emit noise It may cause insufficient cooling heatin Have you done the refrigerant leakage test 9 9 Is heat insulation sufficient It may cause condensation and dripping Is water drainage satisfactory It may cause condensation and dripping Is the voltage in accordance with the rated It may cause electric malfunction voltage marked on the nameplate or damage the product Is the electric wiring and piping It may cause electric malfunction connection installed correctly and securely or damage the part Has the unit been connected to a secure It may cause electrical leakage ground connection Is the power cord specified It may cause electric malfunction or damage the part Are the inlet and outlet openings blocked It may cause insufficient cooling heating capacity Is the length of connection pipes The refrigerant capacity is not accurate and refrigerant capacity been recorded Operation Test 1 Before Operation Test 1 Do not switch on power before installation is finished completely 2 Electric wiring must be connected correctly and securely 3 Cut off valves of the connection pipes should be opened 4 All the impurities such as scraps and thrums must be cleared from the unit 2 Operation Test Method 1 Switch on power and press ON OFF button on the wireless remote controller to start the operation 2 Press MODE button to select the COOL HEAT Cooling only unit is
48. hich may result to you or others 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 read understand 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 messages will follow the safety alert symbol with the word WARNING or CAUTION These words mean A WARN N G You can be killed or seriously injured if you do not follow instructions A G AUTI N You can receive minor or moderate injury if you do not follow instructions All safety messages will tell you what the potential hazard is tell you how to reduce the chance of injury and tell you what will happen if the instructions are not followed A message to alert you of potential property damage will have the word NOTICE N TI C E Potential property damage can occur if instructions are not followed PERSONAL INJURY OR DEATH HAZARDS ELECTRICAL HAZARDS Unplug and or disconnect all electrical power to the unit before performing inspections maintenance or service Make sure to follow proper lockout tag out procedures e Always work in the company of a qualified assistant 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
49. hooting Analysis or processing of some of the malfunction display 1 Compressor discharge protection Possible reasons shortage of refrigerant blockage of air filter poor ventilation or air flow short pass for condenser the system has noncondensing gas such as air water etc blockage of capillary assy including filter leakage inside four way valve causes incorrect operation malfunction of compressor malfunction of protection relay malfunction of discharge sensor outdoor temperature too high Processing method refer to the malfunction analysis in the above section 2 Low voltage over current protection Possible reason Sudden drop of supply voltage 3 Communication malfunction Processing method Ch eck if communication signal cable is connected reliably 4 Sensor openo rs hort circuit Processing method Check whether sensor is normal connected with the corresponding position on the controller and if damage If lead wire is found 5 Compressor overload protection Possible reasons insufficient or too much refrigrant blockage of capillary and increase of suction temp improper running of compressor burning in or stuck of bearing damage of discharge valve malfunctioning of protector Processing method adjust refrigerant amount replace the capillary replace the compressor use universal meter to check if the contactor of compressor is fine when it is not overheated if not replace the protector 6 System malfunction
50. i e overload protection When tube temperature Check the temperature of outdoor heat exchanger when cooling and check the temperature of indoor 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 can not be self canceled cut off the power and turn off the unit and then re energize the unit again after about 10 min After repeating the procedure for sever times if the malfunction still exists replace the module 9 4 Howto Check simply the main part 52 1 Capacitor charge fault Fault with outdoor unit AP1 below refers to the outdoor control panel Main Check Points Troubleshooting Units of 115V Use AC voltmeter to check wether the voltage between terminal L and on the wiring board is 115V AC Units of 115V Whether the reactor L is correctly connected Whether the connection is loose or fallen Whether the reactor L is damaged Fault diagnosis process Switch on the unit and wait 1 minute Use DC voltmeter to measure the voltage on the two ends of electrolytic capacitor test3 Voltage higher than 103 5V For 115V Uni
51. ic Expansion Valve throttling Starting Method Transducer starting Working Temp Range EA 41 115 Aluminum fin copper tube Lm Rows FinGap 20 Coil length 1 xheight xcoil width L 2394X20X173 Sees 0 pewememer RAET To E zij Isolation Permissible Excessive Operating Pressure for the Suction Side Dimension WPO m moxa Dimension ot Package m Weight el fe E mn nnn The above data is subject to change without notice Please refer to the nameplate of the unit 10 Specifications _ RE O s Power ne Throttling Method Electronic Expansion Valve throttling Starting Method Transducer starting Working Temp Range 41 115 Coil Aluminum fin copper tube Coil length I x height x coil width L Eped w Car 7 prome terim I sr DemsmgWeod soin een Pressure for the Discharge Side pressu br he suton sae PS Pressure for the Suction Side Dimension we im smana Weight 26 _ Facoy pescage r 7 di i mn The above data is subject to change without notice Please refer to the nameplate of the unit 11 Specifications Appending date Table showing operation frequency lim
52. icates the guide louver swings as N l gt I Dp I 23 Function and Control 24 TIMER ON Press TIMER ON button blinks and disappears Within 5 seconds every press of or button increases or decreases the ON time setting by 1 minutes Holding down either buton above 2 5 seconds rapidly changes the time setting by 1 minute and then by 10 minutes Within 5 seconds after setting press TIMER ON to confirm To cancel the TIMER ON operation press TIMER ON button TIMER OFF Press TIMER OFF button to set TIMER OFF The setting method is the same as TIMER ON CLOCK Press CLOCK button the icon blinks During 5 seconds blinking pressing or button adjusts 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 decreased the time will be changed by 10 minutes every 0 5 second During blinking press the CLOCK button again the icon will be constantly displayed and it indicates that setting has been finished X FAN Pressing X FAN button in COOL or DRY mode the icon is displayed the indoor fan will continue operation for 10 minutes in order to dry the indoor unit even though you have turned off the unit After energization X FAN OFF is defaulted X FAN is not available in AUTO FAN or HEAT mode TEMP Press TEMP button set temperature 4 indoor ambient temper
53. icator blinks for 5 times Outdoor condenser temp sensor mal Red indicator for 6 times Outdoor ambient temp sensor mal Red indicator blinks for 7 times I m Outdoor exhaust temp sensor mal Red indicator blinks for 8 times Starting at temp does not reach Green indicator does not blink Communication is abnormal Troubleshooting 49 Troubleshooting Rane cfranning sas 5 overuren proren 5 _ Overoad protection Binksk mes renaste a Overoad protection OO emoe 70 requency limited reauency wee OOo ouioorunitambientsenormalundion e putioorunrbetmp sensormalunon 715 Outdoor ar exhaust sensor malfunction ro ZZZ 16 achieve the temperature of unistarsup Sink eight mes TT el Jor pro 22 inaoor ambient sensor matinetov 725 indoor tube temperature sensormaftnation J E al ee Normal cooling or norminal heating 25 Max cooling or max heating Interim cooling or interim heating E 27 cooling or Min heating YELLOW LED4 RED LED3 p NENNEN pome Troubles
54. ide on the charge set and discharge the refrigerant until the gauge indi cates 0 kg cm G f there is no air in the refrigerant cycle the pressure when the air conditioner is not running is higher than 1 kg cm G discharge the refrig erant until the gauge indicates 0 5 to 1 kg cm 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 refrigeration oil will also be discharged 71 Troubleshooting Evacuation All amount of refrigerant leaked Liquid side Outdoor unit Procedure 1 Connect the vacuum pump to the center hose 3 Close the valve Lo side on the charge set of charge set center hose turn off the vacuum pump and confirm that the gauge needle does not move approxima 2 Evacuation for approximately one hour tely 5 minutes after turning off the vacuum Confirm that the gauge needle has moved pump toward 76 cmHg vacuum of 4 mmHg or less 4 Disconnect the charge hose from the vacuum pump Vacuum pump oil If the vacuum pump oil becomes dirty or depleted replenish as needed 72 Troubleshooting Gas Charging After Evacuation Indoor unit Liquid side Open Outdoor unit 3 Way valve m Jy Gas side Open 3 Way Check valve valve Charging cylinder 3 Procedure 1 Connect the charge hose to the charging cylinder
55. iews 3 1 Indoor Unit Indoor Unit mm Outdoor Unit mm System Model Additional Dimensions 33 EN 10 1076 7 30 3 4 23 1 2 10 7 8 12 1 2 33 EEN 21 EIN 16 Refrigerant System Diagram 4 Refrigerant System Diagram Cooling Models INDOOR UNIT OUTDOOR UNIT GAS SIDE HEAT EXCHANGE EVAPORATOR EXCHANGE CONDENSER Strainer Electric Expansion Strainer Valve COOLING 17 5 Schematic Diagram 5 1 Electrical Date Meanina of marks Indoor Unit Symbol Color symbol Color symbol WHITE Outdoor Unit ww m Ro Schematic Diagram pros saorsrostosso CONNECTOR 5 2 Electrical wiring These circuit diagrams are subject to change without notice please refer to the one supplied with the unit Indoor Unit
56. ing and heat tripping in order to protect the short circuit and overloading 4 The min distance from the unit and combustive surface is 5ft The appliance shall be installed in accordance with national wiring regulations 6 An all pole disconnection switch having a contact separation of at least 3mm in all poles should be connected in fixed wiring Note Make sure that the Live wire or Zero line as well as the ground wire in the family power socket can not be wrong connected there should be reliable and no short circuit in the diagram wrong connection may cause fire Ground requirements 1 Air conditioner is type I electric appliance thus please do conduct reliable earthing measure 2 The yellow green two color wire in air conditioner is earthing wire and cannot be used for other propose It cannot be cut off and be fix it by screw otherwise it would cause electric shock 3 The earth resistance should accord to the National Criterion 4 The user power must offer the reliable grounding terminal Please don t connect the earthing wire with the following place Tap water pipe 2 Gas pipe 3 Contamination pipe 4 Other places that professional personnel consider them unreliable 5 The model and rating values for fuses according the silk print on fuse cover or related PCB board HS JI mo a 37 Installation Manual 7 2 Installation dimension diagram en Space to the ceiling side
57. ires Whether there is an damage or short circuit If the fault is eliminated N Remove the PFC capacitor and measure resistance N between the two terminals The capacitor is circuited mea Restart the unit If the fault is eliminated Is the resistance around zero the capacitor should be repla iced N Disconnect the terminals for the reactor and measure the resistanc N between the two terminals of the reactor by an ohm gauge If the fault is eliminated hether there is any damage or short circuit Replace the control panel AP1 60 Troubleshooting 8 Communication malfunction following AP1 for outdoor unit control board Mainly detect Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect well or not if is there any damage eis there any damage for the indoor unit mainboard communication circuit 15 communication circuit damaged The flow chart for malfunction detect Check wiring inside of the indoor and outdoor Did the equipment operate normally before the failure occurs um Check the wiring of the indoor and outdoor units with reference to the wiring diagram P d en units a n j HES ls the connection right E The AP1 voltage detection circuit 4 Y is at fault dL Are wires b
58. its for cooling and heating Outdoor Relative Humidity 40 Outdoor Relative Humidity 72 Capacity Change Ratio Capacity Change Ratio 15 35 55 75 95 15 35 55 75 95 Compressor Frequency Hz Compressor Frequency Hz Performance date for both cooling and heating COOLING Temperature Condition Standard Heat exchanger pipe CF pressure temp Indoor fan Mode revolution indoor Outdoor P MPa ODF rps 081011 531057 110510104 Turo High Rated 80 67 o5 12K 08110 50054 10910113 Turbo High Rated HEATING Temperature Condition Standard Heat exchanger pipe F pressure temp Indoor Outdoor MPa EVP F COD CC 2 8 to 3 2 99 to 100 2104 US i 28032 ioin ows Rated NOTES 1 Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bent Thermistor themometer 2 Connecting piping condition 7 6 m 12 Specifications Expanded capacity data tables for both cooling and heating Cooling Capacity Ratio Conditions Indoor DB80 F WB67 F Indoor air flow TURBO Pipe length 7 6m Capacity Variation Ratio According to Pipe Length 110 T T Conditions Indoor DB80 F WB67 F Outdoor DB95 F WB75 F Indoor air flow TURBO 105 90 F Standard pipe length 7 6m mm Maximum pipe length 20m 80 H H 05 10 15 20 25 30 Total pip
59. n 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 waves are generated by radio equipment welders and medical equipment Place where a lot of salinities such as coast exists Place where the oil machine oil is contained in the air Place where a sulfured gas such as the hot spring zones is generated Other place with special circumstance Indoor Unit Installation Position Selection The air inlet and outlet vent should be far from the obstruction make sure that the air can be blown through the whole room 2 Select a position where the condensing water can be easily drained out and the place is easily connected for outdoor unit 3 Select a location where the children can not reach 4 Can select the place where is strong enough to withstand the full weight and vibration of the unit And will not increase the noise 5 Be sure to leave enough space to allow access for routine maintenance The height of the installed location should be 8ft or more from the floor 6 Select a place about 1m or more away from TVset or any other electric appliances 1 Select a place where the filter can be easily taken out 8 Make sure that the indoor unit installation should accord with installation dimension diagram requirements 9 Do not use the uni
60. n other controls are functioning When frequency is drooping Frequency management is carried out only when the frequency droops For limiting lower limit Frequency management is carried out only when the frequency rises 4 Upper and lower limit of frequency by PI control The frequency upper and lower limits are set depending on indoor unit When low noise commands come from the indoor unit or when outdoor unit low noise or quiet commands come from indoor unit the upper limit frequency must be lowered than the usual setting 6 5 3 minutes Standby Prohibit to turn ON the compressor for 3 minutes after turning it off except when defrosting 6 6 Compressor Protection Function When turning the compressor from OFF to ON the upper limit of frequency must be set as follows The function must not be used when defrosting Frequency FCG3 FCG2 FCG1 RES 1sec P TCG 2sec TCG 3sec Time TCG3 180 32 Function and Control 6 7 Discharge Pipe Control Outline The discharge pipe temperature is used as the compressor s internal temperature If the discharge pipe temperature rises above a certain level the operating frequency upper limit is set to keep this temperature from going up further Detail Divide the Zone Stop zone Drooping zone Keep zone Up zone Heat exchanger thermistor temperature Reset zone Management within the Zones Zone Control contents Stop zone When th
61. nditioning unit prior to operating Use air conditioner on a single dedicated circuit within the specified amperage rating Connect to a properly grounded outlet only Do not remove ground prong of plug Do not cut or modify the power supply cord Do not use extension cords with the unit Be extremely careful 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 the unit Do not drill holes in the bottom of the drain pan or the underside of the unit Failure to follow these instructions can result in damage to the unit and or minor to serious property damage Specifications Moda Zdoor Unit MROSCIH Frequency Inverter different Compressor speed Total Capacity Inverter different Compressor speed Power Input w 1050 Inverter different Compressor Standard w speed High High 16 8 253 Indoor unit Fan Motor 1260 1050 Rated Current Evpoaor T ficopper tube EL Coil length I xheight H xcoil width L 25 4 X 1 X 10 5 Swing MP24AA Motor Fuse A A PCB 3 15A Sound Pressure Level Sound
62. ntrol Operation 1 Temperature Parameters Indoor preset temperature Tpreset Indoor ambient temperature Tamb 2 Basic Functions Once energized in no case should the compressor be restarted within less than 3 minutes In the situation that memory function is available for the first energization if the compressor is at stop before de energization the compressor will be started without a 3 minute lag if the compressor is in operation before de energization the compressor will be started with a 3 minute lag and once started the compressor will not be stopped within 6 minutes regardless of changes in room temperature 1 Cooling Mode Working conditions and process of cooling When Tamb2 Tpreset the unit will enter cooling operation in which case the indoor fan the outdoor fan and the compressor will work and the indoor fan will run at preset speed When TambS Tpreset 28 F the compressor will stop the outdoor fan will stop with a time lag of 30s and the indoor fan will run at preset speed When Threset 28 F lt Tamb Tpresett34 F the unit will remain at its previous state Under this mode the four way valve will be de energized and temperature can be set within a range from 61 F to 86 F If the compressor is shut down for some reasons the indoor fan and the swing device will operate at original state Tamb Start cooling T preset S Original working state BF preset NO 7 N Stop c
63. of gas from a gas cylinder Pumpina Down Troubleshooting Purge the air Outdoor unit Procedure 1 Confirm that both the 2 way and 3 way valves are set to the open position Remove the valve stem caps and confirm that the valve stems are in the raised position Be sure to use a hexagonal wrench to operate the valve stems 2 Operate the unit for 10 to 15 minutes 3 Stop operation and wait for 3 minutes then connect the charge set to the service port of the 3 way 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 cm g 7 Immediately set the 3 way valve to the closed position Do this quickly so that the gauge ends up indicating 3 to 5kg cm g 8 Disconnect the charge set and mount the 2 way and 3 way valve s stem nuts and the service port nut Use torque wrench to tighten the service port nut to a torque of 1 8 kg m Be sure to check for gas leakage 69 Troubleshooting Re air Puraing Outdoor unit Procedure 1 Confirm that both the liquid side valve and the gas side valve are set to the closed position 2 Connect the charge set
64. ooling IA 26 minutes 4 53 minutes 6 minutes N V Compressor Outdoor fan 7 Indoor fan Protection Antifreeze protection Under cooling and dry mode 6 minutes after the compressor is started If T eyapS 36 F the compressor will operate at reduced frequency If T evap 30 F is detected for durative minutes the compressor will stop and after 30 seconds the outdoor fan will stop and under cooling mode the indoor fan and the swing motor will remain at the original state If T evap 2 42 F and the compressor has remained at OFF for at least 3 minutes the compressor will resume its original operation state Total current up and frequency down protection If lotas A frequency rise will be allowed if lota ZB frequency rise will not be allowed gt C the compressor will run at reduced frequency and if hota 2D the compressor will stop and the outdoor fan will stop with a time lag of 30s 2 Dry Mode 0 Working conditions and process of dry If Tamb gt Tpreset the unit will enter cooling and dry mode in which case the compressor and the outdoor fan will operate and the indoor fan will run at low speed If Toresei 28 F X TambS T preset the compressor remains at its original operation state If Tamb lt Tpreset 28 F the compressor will stop the outdoor fan will stop with a time lag of 30s and the indoor fan will operate at low speed 27 Function and Control Pr
65. oor fans are working normally 3 If the environment temperature is too high resulting in that the system pressure is too high and exceeds the permissible range 4 If the charge volume of refrigerant is too much resulting in that the system pressure Is too igh Reconnect the capacitor C2 according to Electrical Wiring Diagram Then energize and start the unit disconnect the power supply Then check the connection of capacitor C2 according to Electrical Wiring Diagram he connection of capacitor C2 is loose p 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 on the two ends of capacitor C2 Then use capacitance meter to measure the capacitor C2 Verify as per the Parameters Sheet If the unit can work normally If the unit can work normally Replace the capacitor C2 Then energize and start the unit If capacitor C2 is failed 5 Other conditions resulting in that the System pressure becomes too high Refer to the Electrical Wiring Take corrective actions according to Technical If the unit can Diagram and check If there is any if the connection abnormality Service M
66. otection Protection is the same as that under the cooling mode 3 Heating Mode Working conditions and process of heating If Tamb STpreset30 F the unit enters heating mode in which case the four way valve the compressor and the outdoor fan will operate simultaneously and the indoor fan will run at preset speed in the condition of preset cold air prevention If T amb2T preset 41 F the compressor will stop the outdoor fan will stop with a time lag of 30s and the indoor fan will stop after 60 second blow at low speed If Tpreset 90 FT amp Tpreset 4 1 F the unit will maintain its original operating status Under this mode the four way valve is energized and temperature can be set within a range of 61 86 F The operating symbol the heating symbol and preset temperature are revealed on the display Condition and process of defrost When duration of successive heating operation is more than 45 minutes or accumulated heating time more than 90 minutes and one of the following conditions is reached the unit will enter the defrost mode after 3 minutes a Toutdoor amb2A F Toutdoor tube b A FST outdoor amb SB F Toutdoor tube SXF B FSToutdoor amb lt C F Toutdoor tube SY F d Touter amb lt C F Touter tube sZ F At that time the indoor fan stops and the compressor stops and after 30 seconds the outdoor fan will stop and then after 30 seconds the four way valve will stop After 30 seconds the com
67. pressor is initiated for raising the frequency to defrost frequency When the compressor has operated under defrost mode for 7 5 minutes or Touter tube ZE F the compressor will be converted to 53Hz operation After 30 seconds the compressor will stop And after another 30 seconds the four way valve will 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 CD In the case of Tindoor amp lt 7 5 F if T tube lt 104 F and the indoor fan is at stop state the indoor fan will begin to run at low speed with a time lag of 2 minutes Within 2 minutes if Tube gt 40 G the indoor fan also will run at low speed and after 1 minute operation at low speed the indoor fan will be converted to operation at preset speed Within 1 minute low speed operation or 2 minute non operation if Tube gt 108 F the fan will run at present speed Q In the case of Tingoor amb275 F if Tube S108 F the indoor fan will run at low speed and after one minute the indoor fan will be converted to preset speed With in one minute low speed operation if Tube gt 108 F the indoor fan will be converted to preset speed Note Tindoor ambindicated in 1o and 2 refers
68. r Outdoor Unit seen 44 51 9 4 How to Check simply the main part A E ant or enne OO Eu Se Du 52 62 9 invetten nete 73 78 10 Exploded Views and Parts List 79 85 Model and product code Model and product code Voltage range Complete unit model Indoor unit model Outdoor unit model 115V 60HzM MO9CIH MWO9CIH MRO9CIH 115V 60HzM M12CH MW12CIH MR12CIH Summary and features Summary and features OutdoorUnit MRO9CI H MRO12CIH Remote control windo w IMPORTANT SAFETY INFORMATION The information contained in this manual is intended for use by a qualified service technician who is familiar with the safety procedures required for installation and repair and who is equipped with the proper tools and test instruments required to service this product Installation or repairs made by unqualified persons can result in subjecting the unqualified person making such repairs as well as the persons being served by the equipment to hazards resulting in injury or electrical shock which can be serious or even fatal Safety warnings have been placed throughout this manual to alert you to potential hazards that may be encountered If you install or perform service on equipment it is your responsibility to read and obey these warnings to guard against any bodily injury or property damage w
69. roken N v Check the communication circuit of the outdoor unit the fault tf The communicatio circuit is abnorm v Replace the main board of the indoor unit Replace the main board MAP of the outdoor unit f the fault is eliminate N N Correctly connect the corresponding wires for the indoor and outdoor units with reference to the wiring diagram If the fault is eliminate 61 62 9 Flow chart for outdoor communitcation circuit detectina Start Measure voltage at the Test 10 position as shown in the diagram with a voltmeter Value jumping Measure voltage at the Test 15 position as shown in the diagram with a voltmeter Value jumping N Measure voltage at the Test 11 position as shown in the diagram with a voltmeter y Fault with outdoor unit Value jumping N Measure voltage at the Test 12 position as shown in the diagram with a voltmeter Value jumping Rd The communication circuit of the outdoor End unit is normal Troubleshooting Troubleshooting 9 Flow chart for outdoor communitcation circuit detecting 1 Test the voltage between N point of wiring board and communication cable with universal meter The voltage shall be variable Otherwise it might be malfunction of mainboard of indoor unit or malfun
70. s are reinstalled properly Poor installations that allow dust or moisture incursion may cause fire or electrocution Installing Indoor Unit xternal connection mn E The piping can be output from right right rear left Sa or left rear 2 1 When routing the piping and wiring from the left 5 or right side of indoor unit cut off the tailings 1 Tailing 1 om opori NOY aasde from the chassis as necessary As shown in Fig 7 Fig 7 Finally wrap Wae i 1 Cut off the tailings 1 when routing the wiring only 2 Cut off the tailings 1 and tailings 2 when routing both the wiring and piping 4 2 Take out the piping from body wrap the piping e Left power cords drain hose with the tape and make them Right 1 Tailing 2 ES Left rear through the piping hole As shown in Fig 8 Right SS Fig 8 3 Hang the mounting slots of the indoor unit on the upper hooks of the mounting plate and check if it is Fixing ak Mounting firm enough As shown in Fig 9 di J plate 4 The height of the installed location should be 6ft 1 di SE or more from the floor Fig 9 dq Installing Connection Pipe 1 Align the center of the piping flare with the relevant valve 2 Screw in the flare nut by hand and then tighten the nut with spanner and torque wrench referring to the following e Indoor unit piping Taper nut Piping Hex nut diameter Tightening torque I
71. st set temperature If cooling heating load is proper Check the forecasted load of cooling heating C heck and fill the leakage then T 3J9 vacuumize it and supplement the re frigerant as required Leakage between the high pres sure and the low pressure in Replace the compressor Malfunction of side the compressor refrigerant flow P Malfunction of four way valve gt Replace the four way valve I The refrigerant has leakage or is insufficient Local block of capillary Replace the capillary Judge whether the system is blocked by observing the condensation of evapora Blockage of cooling system tor and the pressure value of the high pressure manometer and take measures to deal with the system Heat Insulation for the connection Make sure that heat insulation for the thick and thin pipes pipes of the indoor unit and the out 9 na is good Heat insulation must also be provided for the door unit is bad joint andthe exposed part of the copper pipe Poor COOL HEAT operation Block of outdoor heat ex Clean the dust accumulated on the surface of changer the heat exchang
72. t in the immediate surroundings of a laundry a bath a shower or a swimming pool Installation Manual Outdoor Unit Installation Position Selection 1 Select a location from which noise and outflow air emitted by unit will not inconvenience neighbors animals plants Select a location where there should be sufficient ventilation Select a location where there should be no obstructions cover the inlet and outlet vent The location should be able to withstand the full weight and vibration of the outdoor unit and permit safe installation Select a dry place but do not expose under the direct sunlight or strong wind Make sure that the outdoor unit installation dimension should accord with installation dimension diagram convenient for maintenance repair The height difference of connecting the tubing within 16ft the length of connecting the tubing within 32ft Select a place where it is out of reach for the children Select a place where will not block the passage and do not influence the city appearance Safety Requirements For Electric Appliances The power supply should be used the rated voltage and AC exclusive circuit the power cable diameter should be satisfied 2 Don t drag the power cable emphatically 3 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 tripp
73. tates Location L Location A Location B Location C Location D Location L to Location D stop at any location between L D the included angle between L D is the same The air deflector will be closed at 0 location and the swing is effectual only on condition that setting the swing order and the inner fan is running The indoor fan and compressor may get the power when air deflector is on the default location 30 Function and Control Cooling angle 040 Heating mw 000 Y y v v 10 Display Operation pattern and mode pattern display All the display patterns will display for a time when the unit is powered on the operation indication icon will display in red under standby status When the machine is start by remote controller the indication icon will light and display the current operation mode the mode light includes Cooling heating and dry If you close the light key all the display icons will close Double 8 display According to the different setting of remote control the nixie lamp may display the current temperature the temperature scope is from 61 F to 86 F and indoor ambient temperature The heating and air supply temperature will display 77 F under auto mode the temperature will display 64 F under the heating mode and the temperature will display H1 under the defrosting mode If you set thefahrenheit temperature display the nixie lamp will display according to fahrenheit temperature 11 Pro
74. tection function and failure display E2 Freeze proofing protection E4 Exhausting protection E5 Overcurrent protection E6 Communication failure E8 Overload protection F1 Indoor ambient sensor start and short circuit continuously measured failure in 30S F2 Indoor evaporator sensor start and shortcircuit continuously measured failure in 30S F3 Outdoor ambient sensor start and short circuit continuously measured failure in 30S F2 Outdoor condenser sensor start and short circuit continuously measured failure in 30S and don t measure within 10 minutes after defrosted F5 Outdoor exhausting sensor start and short circuit continuously measured failure in 30S after the compressor operated 3 minutes H3 Overload protection of compressor H5 Module 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 dry function after stop the machine by pressing the switch button you should keep running the infoor fans for 10 minutes under low air damper The Swing will operate as the former status within 10 minutes and other load is stopped then stop the entire machine When you stop the dry func
75. ted in the U S A
76. time lag of 30 seconds If temperature is below 203 F the overload protection will be relieved If voltage on the DC bus is below 150V or over 420V the compressor will stop and the outdoor fan will stop with a time lag of 30 seconds When voltage on the DC bus returns to its normal value and the compressor has stayed at stop for at least 3 minutes the compressor will resume its operation Faults of temperature sensors 29 Function and Control Designation of sensors Faults v The sensor is detected to be open circuited or short circuited for successive 30 Indoor ambient temperature Seconds The sensor is detected to be open circuited or short circuited for successive 30 Indoor tube temperature Seconds The sensor is detected to be open circuited or short circuited for successive 30 Outdoor ambient temperature gebande The sensor is detected to be open circuited or short circuited for successive 30 seconds and no detection is performed within 10 minutes after defrost begins After the compressor has operated for 3 minutes the sensor is detected to be Outdoor tube temperature cs open circuited or short circuited for successive 30 seconds After the compressor has operated for 3 minutes the sensor is detected to be Overload ut P open circuited or short circuited for successive 30 seconds 3 Other Controls 1 ON OFF Press the remote button ON OFF the on off state will be changed once each time you press the button 2 Mode Sele
77. ting the system begins to detect the temperature sensor malfunction In other times the temperature sensor malfunction will be detected 3 Protection of temperature sensor 1 When short circuit occurs to the temperature sensor for 30s The temperature sensor overheats In this case the complete unit will stop for protection At the same time the temperature protection and temperature sensor malfunction will be shown 2 When break circuit occurs to the temperature sensor for 30s The unit will stop and the temperature sensor malfunction will be displayed 6 4 Frequency Control Frequency Initial Setting Outline When starting the compressor or when conditions are varied due to the change of the room the frequency must be initialized according to the D value of the indoor unit and the value of the indoor unit Q value Indoor unit output determined from indoor unit volume air flow rate and other factors PI Control Determine Frequency Up Down ZD Signal 1 Pcontrol Calculate AD value in each sampling time 20 seconds and adjust the frequency according to its 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 AD value obtaining the fixed AD value When the AD value is small lower the frequency When the AD value is large increase the frequency 3 Frequency management whe
78. ting the mo tor and cross flow fan to separate and remove them SCrews SCrew 76 Removal Procedure 10 2 Removal Procedure of Outdoor Unit Cable Cross Plate sub assy 1 Remove top cover and the Cable Cross Plate sub assy Unscrew the screw on the handle and pull the top c ver Cable Cross Plate sub assy forcibly downwards to re move it Unscrew the 3 screws fixing the top cover to remove it screws 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 If it s 108 230V there are 6 screws need to be unscrewed because there are one more power transformer 77 Removal Procedure 4 Remove electric box cover Unscrew the 2 screws fixing the electiric box Pull theelectric box upwards and unplug 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 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 4 way valve weld spots 78 7 Remove electronic expannsion valve Unsolder the weld spots of eletronic expansion valve connecting with other pipelines to remove it 8 Remove gas valve and liquid valve Unscrew the 2 screws fixing the gas
79. tion press the switch button will stop the machine directly When you start the drying function operating the drying button will stop the inner fans and close the guide louver 13 Memory function wheninterrupting the power supply Memory content mode swing function light set temperature and wind speed After interrupted the power supply the machine will start when recovering the power according to the memory content automatically If the last remote control command has not set the timed function the system will remember the last remote control command and operate according it If the last remote control command has set timed function and the power supply is interrupted before the timed time the system will remember the timed function of the last remote control command the timed time will recounted form power on If the last remote control command has set timed function the time is out and the system is start or stop according to the set time when the power supply is interrupted the system will remember the operation status before the power supply was interrupted and do not carry out timed action The timed clock will not be remembered 31 Function and Control 6 3 Detection of temperature sensor malfunction 1 Indoor temperature sensor Detect malfunctions of temperature sensor any time 2 Indoor pipe temperature sensor In defrosting period the temperature sensor malfunction will not be detected 5 min after finishing defros
80. ts Voltage higher than 187V Fault with the voltage testing circuit on contr Replace the control pane AP1 For 208 230V Units ol panel AP1 N Measure the AC voltage between terminal L and N on wiring board Switch off the power and repair Voltage within 103 5 126 5V the supply power Re energize If the fault is For 115V Units N to restore the volt Pi and switch Ds aliminated age to 103 5 126 5 on the unit VVAC For 115V Units Y Switch off the power and wait 20 minutes or use DC voltmeter to measure the volt 4 N 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 v Connect the rea B m e energize If the wiring of ctor L according to If the fault reactor L is normal N Electrical Wiring O and switch on Ber is eliminated Diagram the unit Y v Replace the control N panel AP1 End Y Troubleshooting 2 IPM Protection Out of step Fault Compressor Phase Overcurrent AP1 below refers to the outdoor control panel Mainly detect Whether the connection between control panel AP1 and compressor COMP is secure Wh
81. uency rise is not allowed C If T tube 2136 F the compressor will uat reduced frequency d If T tube2144 F the compressor will stop and the indoor fan will run at preset speed 2 Heating overload a If Tube S106 F the unit will return to its original operation state b If T tube 2131 F frequency rise is not allowed C If T tube 2136 F the compressor will run at reduced frequency d If T tube2144 F the compressor will stop and the indoor fan will blow residue heat and then stop Exhaust temperature protection of compressor If exhaust temperature2208 F frequency is not allowed to rise If exhaust temperature2217 F the compressor will run at reduced frequency If exhaust temperature 2230 F the compressor will stop If exhaust temperature lt 194 and the compressor has stayed at stop for at least 3 minutes the compressor will resume its operation Communication fault If the unit fails to receive correct signals for durative 3 minutes communication fault can be justified and the whole system will stop Module protection Under module protection mode the compressor will stop When the compressor remains at stop for at least 3 minutes the compressor will resume its operation If module protection occurs six times in succession the compressor will not be started again Overload protection If temperature sensed by the overload sensor is over 239 F the compressor will stop and the outdoor fan will stop with a
82. will stop the outdoor fan will stop with a time lag of 1 minute and the indoor fan will run at preset speed and if Toresei 28 F lt Tamo Tpreset the unit will remain at its original state b Under AUTO mode if TambSTpresec 36 F is detected the unit will select to run under heating mode in which case implicit preset temperature is 64 F if Tamb 2Tpreset41 F the compressor will stop the outdoor fan will stop with a time lag of 1 minute and the indoor fan will run under the mode of residue heat blowing and if Tpreset 36 F lt Tamb lt Tpreset 41 F the unit will remain at its original state The cooling only unit will run under fan mode c Under AUTO mode if 68 F lt Tamb lt 77 F the unit will remain at its original state 2 Protection a In cooling operation protection is the same as that under the cooling mode b In heating operation protection is the same as that under the heating mode c When ambient temperature changes operation mode will be converted preferentially Once started the compressor will remain unchanged for at least 6 minutes 6 Common Protection Functions and Fault Display under COOL HEAT DRY and AUTO Modes Overload protection measured temperature of outdoor heat exchanger undercooling mode and measured temperature of indoor heat exchanger under heating mode 1 Cooling overload a If Type S106 F the unit will return to its original operation state b If T tue 2131 F freq

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