Carrier 124ANS40MKQB Service Manual Download | Manualshive

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5 --- Refrigerant Leakage Detection --- diagnosis and solution (EC)

Error Code

EC

Trouble shooting:

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Summary of Contents for 124ANS40MKQB

Page 1: ...d CAUTION These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies hazards which could result...

Page 2: ...MK MODEL VOLTAGE 3 208 230 1 60 NOMINAL CAPACITY 18 1 1 2 TONS 22 1 5 6 TONS 24 2 TONS 28 1 1 3 TONS 32 2 2 3 TONS INDOOR FAN COIL TYPE B HIGH WALL 01 15 Week of Manufacture Year of Manufacture 00001...

Page 3: ...ntrol for cooling 20F 24AHA4 124ANS 460V 3 KAACH1401AAA Crankcase Heater 24AHA4 124ANS Sizes 18 36 208 230V KAACH1501AAA Crankcase Heater 24AHA4 124ANS Size 36 460V 3 KAACH1701AAA Crankcase Heater 25H...

Page 4: ...20 20 20 20 20 20 Circuits 3 3 3 3 3 3 3 6 Indoor Coil Face Area sq ft Sq Ft 3 9 3 9 4 7 4 7 4 7 4 7 4 7 4 7 No Rows 2 2 3 3 3 3 3 3 Fins per inch 21 21 18 18 18 18 18 18 Circuits 6 6 9 9 9 9 9 9 Com...

Page 5: ...or Dimensions Indoor UNIT SIZE A B C D E F G H J K L M N P OPERATING WEIGHT lbs Cooling Only 18 31 1 36 9 14 6 16 0 23 4 17 2 23 1 28 1 13 0 6 6 11 3 0 6 2 9 5 8 146 0 24 31 1 36 9 14 6 16 0 23 4 17 2...

Page 6: ...203 2 mm A08357 Fig 5 Indoor Unit Clearance CLEARANCES OUTDOOR A D B Air inlet Air outlet C E A08436 Fig 6 Outdoor Unit Clearance Table 6 Outdoor Clearances UNIT Coil Facing Wall in mm Fan Facing Wall...

Page 7: ...230 1 60 187 253 0 485 1 0 15 028 032 208 230 1 60 187 253 0 51 1 0 15 Table 10 40MKQB B Electrical Data Heat Pump Nominal Indoor Size Voltage Voltage Range Fan Power Min Max FLA Min Ckt Amps Fuse HAC...

Page 8: ...15 m to 100 ft 30 m CAUTION EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation S Wires should be sized based on NEC and local codes S Use copp...

Page 9: ...Y LEGEND FACTORY POWER WIRING 230V FACTORY CONTROL WIRING 24V FIELD CONTROL WIRING 230V FACTORY CONTROL WIRING 230V COMPONENT CONNECTION FIELD SPLICE NOTES C R O Y 24V 24V 24V 230V 230V 230V ORN YEL...

Page 10: ...ive interface CN 7 F an feedback interface CN_COMP C ompressorsignal CN_L4 Llive wire L CN_N1 Nullline N CN_N2 Nullline N CN_T0 Transformer secondary interface CN_TIN Transformer primary interface CN...

Page 11: ...11 Fig 11 24AHA4 124ANS 208 230 460 3 Phase Wiring Diagram...

Page 12: ...ve interface CN 7 F an feedback interface CN_COMP C ompressorsignal CN_VALVE F ourway valve signal CN_L4 Llive wire L CN_N1 Nullline N CN_N2 Nullline N CN_T0 Transformer secondary interface CN_TIN Tra...

Page 13: ...ION T I N U R O O D T U O T I N U R O O D N I Fig 14 Cooling Only HEAT EXCHANGER CONDENSER HEAT EXCHANGER EVAPORATOR SERVICE VALVE LIQUID HTG LIQUID TWO PHASE REVERSING VALVE COOLING HEATING COMPRESSO...

Page 14: ...A424A003 224ANS024000 40MKQB24B 3 14 028 25HHA430A003 224ANS030000 40MKQB28B 3 11 The above additional charge is required amount for line lengths up to 25 ft 7 6 m For line lengths exceeding 25 ft 7 6...

Page 15: ...ng this time dry nitrogen will be able to diffuse throughout the system absorbing moisture 5 Repeat this procedure as indicated in Fig 19 System will then be free of any contaminants and water vapor C...

Page 16: ...o 4 seconds elapses The diagnostic codes for the indoor units are listed in the appendix Problems may occur that are not covered by a diagnostic code but are covered by the diagnostic flow charts Thes...

Page 17: ...ble Causes Installation mistake Defective PCB Trouble shooting If the EEPROM chip is welded on main PCB replace the main PCB directly Otherwise check whether the EEPROM chip is plugged into main PCB w...

Page 18: ...ng signal feedback for 4 minutes or the zero crossing signal time interval is abnormal Possible Causes Connection mistake Defective PCB Trouble shooting Check if the connections and power supply is no...

Page 19: ...Check the wires of fan motor Are all the connections good No Yes No Correct the connections No Yes Check whether the main PCB is normal through index 2 Yes Yes Check whether the fan motor is normal t...

Page 20: ...the LED displays the failure Possible Causes Wiring mistake Defective sensor Defective PCB Trouble shooting Check the connections between temperature sensor and main PCB Are the connections good Corr...

Page 21: ...4 94V the LED displays the failure Possible Causes Wiring mistake Defective sensor Defective PCB Trouble shooting Check the connections between temperature sensor and main PCB Are the connections good...

Page 22: ...22 5 Refrigerant Leakage Detection diagnosis and solution EC Error Code EC Trouble shooting...

Page 23: ...ure the resistance value with a multimeter Temperature sensors 1 Room temperature T1 sensor 2 Indoor coil temperature T2 sensor 3 Outdoor coil temperature T3 sensor 4 Outdoor ambient temperature T4 se...

Page 24: ...UE CAP Capacitor Voltage AC 230V CN 6 Fan drive interface Voltage AC 230V CN 7 Fan feedback interface Output DC 12V CN_COMP Compressor signal Voltage AC 230V CN_VALVE Four way valve signal Voltage AC...

Page 25: ...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 0 36954 0 32 35 2024 40 104 5 17519 80 176 1 17393 120 248 0 35982...

Page 26: ...15 80 176 6 859 120 248 2 117 1 34 171 9 41 106 28 81 178 6 641 121 250 2 061 2 36 163 3 42 108 26 9 82 180 6 43 122 252 2 007 3 37 155 2 43 109 25 86 83 181 6 228 123 253 1 955 4 39 147 6 44 111 24...

Page 27: ...ted DEFROST indication lamp For cooling heating models only Lights up when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating operation OP...

Page 28: ...4 6 42 8 36 96 8 67 152 6 98 208 4 129 264 2 7 44 6 37 98 6 68 154 4 99 210 2 130 266 8 46 4 38 100 4 69 156 2 100 212 131 267 8 9 48 2 39 102 2 70 158 101 213 8 132 269 6 10 50 40 104 71 159 8 102 2...

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