Midea DLFSHB Manual Download Page 51

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Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

DISASSEMBLY INSTRUCTIONS (CONT)

3) Remove the ﬁxing screw.

4) Pull out the fan motor and fan assembly

from the side.

Fixing Screw

Summary of Contents for DLFSHB

Page 1: ...tifies the most serious hazards which will result in severe personal injury or death WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practic...

Page 2: ...DLFSHBH18XAK 24 DLFSHBH24XAK INDOOR UNIT DLF S H B H 09 A 3 DLF INDOOR UNIT S MODEL VOLTAGE 1 115 1 60 3 208 230 1 60 INDOOR UNIT FAN COIL UNIT TYPE H HIGH WALL UNIT TYPE H HEAT PUMP B MAJOR SERIES VA...

Page 3: ...2 12 7 3 8 9 52 1 2 12 7 1 2 12 7 5 8 16 Indoor Coil Face Area Sq Ft 2 05 2 05 2 05 2 67 2 67 No Rows 2 2 2 2 2 Fins per inch 20 20 20 20 20 Circuits 2 2 2 4 4 Indoor Unit Width in mm 31 57 802 31 57...

Page 4: ...27 337 13 27 337 Width W In mm 31 57 802 31 57 802 31 57 802 42 60 1082 42 60 1082 Depth D In mm 7 87 200 7 87 200 7 87 200 9 21 234 9 21 234 Height In mm 14 96 380 14 96 380 14 96 380 12 40 315 12 4...

Page 5: ...munication issues exists a 14 2 stranded shielded wire can be used to replace L2 and S between outdoor unit and indoor unit landing the shield onto ground in the outdoor unit only HIGH WALL INDOOR UNI...

Page 6: ...ction Diagram 12K 115V Fig 4 Connection Diagram 9K 18K 208 230 1 60 Fig 5 Connection Diagram 24K 208 230 1 60 NOTES 1 Do not use thermostat wire for any connection between indoor and outdoor units 2 A...

Page 7: ...rer reserves the right to change at any time specifications and designs without notice and without obligations 7 Wiring Diagrams Fig 6 Wiring Diagram 9K 12K 115V and 208 230 Fig 7 Wiring Diagram 18K 2...

Page 8: ...5 0 4 0 4 MCA A 0 31 0 19 0 19 0 5 0 5 Type DC Insulation class E E E E E Safe class IP20 Welling Dayang IPX0 Tongda IPX0 Weling Tongda IP20 Zhipu IPX0 Weling Tongda IP20 Zhipu IP20 Welling IP40 Dayan...

Page 9: ...ATION CYCLE DIAGRAM Fig 8 Refrigeration Cycle Diagram Refrigerant Lines IMPORTANT Both refrigerant lines must be insulated separately Table 2 on page 3 lists the pipe sizes for the indoor unit Refer t...

Page 10: ...capable of pulling a vacuum of 500 microns and a vacuum gage capable of accurately measuring this vacuum depth The deep vacuum method is the most positive way of assuring a system is free of air and...

Page 11: ...ctivated and the indoor fan operates after a period of setting time or when the louver is in place If the unit is in the HEATING mode the indoor fan is regulated by the anti cold wind function Compres...

Page 12: ...fied regardless of time Compressor running frequency is more than the test frequency When the compressor running frequency is equal to the test fre quency T4 is greater than 59 F 15 C or no T4 or T4 f...

Page 13: ...ts the fan speeds differ DEFROSTING Mode The unit enters the DEFROSTING mode according to changes in the temperature value of T3 T4 as well as the compressor running time In the DEFROSTING mode the co...

Page 14: ...to the heat exchanger by automatically freezing and then rapidly thawing the frost The internal wind wheel then keeps operating to blow dry the evaporator thus preventing the growth of mold and keepin...

Page 15: ...des EXPLANATION DISPLAYED CODE ADDITIONAL NOTES T1 T1 T1 temperature T2 T2 T2 temperature T3 T3 T3 temperature T4 T4 T4 temperature TP TP TP temperature Targeted frequency FT Targeted Frequency Actual...

Page 16: ...dering iron plug between the terminals of the electrolytic capacitor on the contrary side of the outdoor PCB Fig 16 Discharge Position NOTE Fig 16 is for reference only The plug on your unit may diffe...

Page 17: ...rcuited EC 56 Evaporator coil outlet temperature sensor T2B is in open circuit or has short circuited Eh 60 Indoor room temperature sensor T1 is in open circuit or has short circuited Eh 61 Evaporator...

Page 18: ...heating Fan mode SILENCE function is activated optional function Frosting and defrosting frequently Unit will not start The power switch is on but fans will not start The temperature on the display bo...

Page 19: ...e towers and remote boosters Shipping plates remain attached Unit will not start The power switch is on but fans will not start The temperature on the display board cannot be set Unit is on but the wi...

Page 20: ...of capacity Contact of piping with other piping or external plate Unit will not start Compressor will not start but fans run Compressor and condenser outdoor fan will not start Evaporator indoor fan...

Page 21: ...t but fans run Compressor and condenser outdoor fan will not start Evaporator indoor fan will not start Condenser Outdoor fan will not start Unit runs but soon stops Compressor short cycles due to ove...

Page 22: ...2 SENSOR x x x x x x x x T2B SENSOR x x x x x x x x x REACTOR x x x x x x x x x COMPRESSOR x x x x x x x x x ADDITIONAL REFRIGERANT x x x x x x x x x PART REQUIRING REPLACEMENT EC 53 EC 52 EC 54 EC 51...

Page 23: ...temp T1 sensor Indoor coil temp T2 sensor Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Compressor discharge temp Tp sensor Measure the resistance value of each winding by using the multi...

Page 24: ...the power and allow the large capacity electrolytic capacitors to discharge completely Next dismount the IPM Use a digital tester to measure the resistance between P and UVWN UVW and N Table 16 IPM Co...

Page 25: ...receive feedback from the EEPROM chip Recommended parts to prepare Indoor PCB Troubleshooting and Repair Review Figure 19 for the location of the EEPROM chip on the indoor and outdoor PCB Fig 19 EEPRO...

Page 26: ...unit check if W and 1 L are connected Check if the power LED is on No Yes Yes Unplug all the high voltage components connected to main PCB such as 4 way valve heater AC fan one by one to check their r...

Page 27: ...with the 2 port while the black pin is for 3 port When the air conditioner is normal running the voltage is moving alternately as positive values and negative values If the outdoor unit has a malfunct...

Page 28: ...0RPM for an extended period of time the unit stops and the LED displays the failure EHO3 Recommended parts to prepare Wiring Faulty fan assembly Faulty fan motor Faulty PCB Troubleshooting and Repair...

Page 29: ...age value is not in the range shown in Table 17 and 18 the PCB is faulty and needs to be replaced DC motor voltage input and output voltage 220 240V Table 17 Voltage DC motor voltage input and output...

Page 30: ...voltage is lower than 0 06V or higher than 4 94V the LED displays the failure Recommended parts to prepare Wiring mistake Fan sensor Faulty PCB Troubleshooting and Repair Fig 22 Multimeter Check the c...

Page 31: ...from the display board Recommended parts to prepare Wiring mistake PCB faulty Display board malfunction Troubleshooting and Repair Is the unit still displaying the error code The unit operates normall...

Page 32: ...3 times the display area illuminates EC and the AC turns off Recommended parts to prepare Faulty T2 sensor Faulty indoor PCB System problems such as leakage or blockages Troubleshooting and Repair Ar...

Page 33: ...the outdoor unit s ventilation is working properly Is the heat exchanger dirty No Clean the heat exchanger Yes Replace the outdoor main board Does the problem still exist Yes No Is the outdoor fan ru...

Page 34: ...lfunction Faulty outdoor fan assembly Compressor malfunction Faulty outdoor PCB Troubleshooting and Repair Check the wiring between the PCB and compressor Does an error exist Ensure proper connections...

Page 35: ...issues System leakage or blockage Faulty PCB Reactor Troubleshooting and Repair Check the power supply Is it in working order NO Check the connections and wires YES Are they in working order Ensure pr...

Page 36: ...tection of IPM module PC02 Description If the IPM module temperature is higher than the limited value the LED displays an failure code Recommended parts to prepare Faulty PCB Connection problems Troub...

Page 37: ...ulty Compressor malfunction Outdoor PCB faulty Troubleshooting and Repair Check the wiring between the PCB and compressor Is it improperly wired Ensure proper connectionsor replace the wires and conne...

Page 38: ...cription Outdoor PCB main chip does not receive feedback from the compressor driven EEPROM chip Recommended parts to prepare Outdoor main PCB Electric control box Troubleshooting and Repair Replace th...

Page 39: ...ription None Recommended parts to prepare Wiring mistake Faulty fan assembly faulty Faulty fan motor Faulty PCB Faulty compressor Troubleshooting and Repair Check the wiring between the PCB and compre...

Page 40: ...igations 40 DISASSEMBLY INSTRUCTIONS Front Panel NOTE This section is for reference only and the photos shown may differ from the actual unit Procedure Illustration 1 Hold the front panel by the tabs...

Page 41: ...ice and without obligations 41 DISASSEMBLY INSTRUCTIONS CONT Procedure Illustration 3 Open the horizontal louver and push the hook towards the left to open it 4 Bend the horizontal louver lightly with...

Page 42: ...hout notice and without obligations 42 DISASSEMBLY INSTRUCTIONS CONT Procedure Illustration 5 Pry the electrical cover with a flat screw driver and rotate it towards left then remove it 6 Disconnect t...

Page 43: ...right to change at any time specifications and designs without notice and without obligations 43 DISASSEMBLY INSTRUCTIONS CONT Procedure Illustration 8 Open the screw cap and then remove the 3 screws...

Page 44: ...ons and designs without notice and without obligations 44 DISASSEMBLY INSTRUCTIONS CONT Procedure Illustration 10 Release the 5 hooks in the back 11 Pull out the panel frame while pushing the hook thr...

Page 45: ...and without obligations 45 DISASSEMBLY INSTRUCTIONS CONT Procedure Illustration 12 Release the 5 hooks of the vertical blades then pull the vertical blades to the right and remove them 13 Remove 1 scr...

Page 46: ...one screw from the electrical control box subassembly If you want to repair the electrical control box components perform step 1 If you want to repair the main control board assembly perform steps 2 t...

Page 47: ...t notice and without obligations 47 DISASSEMBLY INSTRUCTIONS CONT Procedure Illustration 4 Pull out the electrical main board along the direction indicated in the image to the right 5 Disconnect the c...

Page 48: ...d designs without notice and without obligations 48 DISASSEMBLY INSTRUCTIONS CONT Evaporator n o i t a r t s u l l I e r u d e c o r P 1 Disassemble the pipe holder located at the rear of the unit 2 R...

Page 49: ...ns and designs without notice and without obligations 49 DISASSEMBLY INSTRUCTIONS CONT n o i t a r t s u l l I e r u d e c o r P 3 Release the hook on the evaporator Remove the screws 2 on the evapora...

Page 50: ...ecifications and designs without notice and without obligations 50 DISASSEMBLY INSTRUCTIONS CONT Fan Motor and Fan n o i t a r t s u l l I e r u d e c o r P 1 Remove the screws 2 and remove the xing b...

Page 51: ...t any time specifications and designs without notice and without obligations 51 DISASSEMBLY INSTRUCTIONS CONT n o i t a r t s u l l I e r u d e c o r P 3 Remove the xing screw 4 Pull out the fan motor...

Page 52: ...S CONT Step Motor NOTE Remove the front panel and electrical parts before disassembling the step motor Procedure Illustration 1 Remove the screws 2 then remove the horizontal swing motor 2 Remove the...

Page 53: ...59 76 169 1 34105 116 241 0 4006 3 27 41 5878 37 99 5 87359 77 171 1 29078 117 243 0 38991 2 28 39 8239 38 100 5 62961 78 172 1 25423 118 244 0 37956 1 30 37 1988 39 102 5 39689 79 174 1 2133 119 246...

Page 54: ...65 8 358 114 237 2 489 5 23 234 9 35 95 35 78 75 167 8 084 115 239 2 422 4 25 222 8 36 97 34 32 76 169 7 82 116 241 2 357 3 27 211 4 37 99 32 94 77 171 7 566 117 243 2 294 2 28 200 7 38 100 31 62 78 1...

Page 55: ...7 8 62 143 6 93 199 4 124 255 2 3 5 38 3 32 89 6 63 145 4 94 201 2 125 257 4 39 2 33 91 4 64 147 2 95 203 126 258 8 4 5 40 1 34 93 2 65 149 96 204 8 127 260 6 5 41 35 95 66 150 8 97 206 6 128 262 4 6...

Page 56: ...ll rights reserved A Carrier company Edition Date 04 21 Catalog No MS DLFSHB 01 Replaces NEW Manufacturer reserves the right to change at any time specifications and designs without notice and without...

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