Carrier 38MAQB09-1 Service Manual Download

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Outdoor Unit Error Display Sizes 09−12 (208−230V)

[V2.4] 2013−9−21

202302100880

¨[¨[?¡ã

VB3

VB2

VB1

ITRIP

PFC−C

+15V

GND

V− W+

W−

V+

U−

U+

ACL−OUT

4−W

ay−

20A/250V

AC_N

KFR26W$BP2−180(DYDC−390−N3).D.13.WP2.1

IPMPFC1

4−Way−N

Rfan

N−IN

L−IN

L??

¨U

©°

¨Uy

IC14

E16

BR1

C30

R147

R145

R144

R143

CN6

PTC1

C29

E20

R142

R118

R119

R124

R168

R136

R133

R128

R127

R123

R108

R101

R100

R99

R98

R93

R74

IC22

C418

C417

C110

C72

C68

C18

CN21

CN22

CN50

_1
_1

CN30

C28

C14

R87

_1 _1 _1 _1 _1 _1 _1 _1

C48

E22

DSA1

R80

R59

R58

R57

R44

R42

R25

R23

D13

R29

D26

D11

IC8

CN32

ZR3

CN9− 1

E25

R159

R95

R60

C82

C79

C61

R91

R140

R24

R52

CN3− 1

CN1

C36

Rfan

R411

R96

R232

R171

R170

R169

R146

R129

R107

R106

R103

R102

R94

R79

R78

R75

R73

R70

R67

R62

R56

R37

R36

R35

R30

R28

R20

R19

R15

Q11

IC15

IC13

E31

E23

DZ21

DZ16

DZ11

DZ3

D36

D31

CN31

C97

C84

C81

C77

C76

C74

C65

C64

C62

C60

C59

C58

C45

C43

C40

C38

C34

C31

C46

C51

R65

R66

IC1

E28

E17

E11

CN16

C33

RY2

RY3

RY4

CN2

ZR2

C37

Rdi

R163

R157

R141

R139

R135

R134

R132

R120

R113

R112

R111

R110

R105

R90

R89

R88

R85

R84

R83

R82

R77

R71

R69

R68

R64

R63

R61

R46

R45

R43

R41

R40

R38

R33

R32

R27

R18

R17

R16

R14

R13

R12

R11

R10

R53

R3
R2

LED1

IC11

FUSE1

CN3

C96

C90

C75

C73

C57

C52

C50

C49

C44

C41

C39

C35

C26

C24

C23

C22

C21

C20

C17

C16

C15

C13

C47

C27

R114

VD2

VD1

R150

R131

R115

R109

R104

R92

R55

R54

R51

R50

R47

R39

R34

IC17

IC4

D15

CN26

CN25

C80

C71

C42

C12

R125

C101

C91

C86

DZ2

CN9

C19

C54

C55

C56

DZ1

DZ5

DZ6

E18

E21

CN28

CN29

CN32− 1

C412

C413

C411

CX9

IC3

RC1

RC3

IC2

CN60

IC9

RC2

CN27

CN12

IC19

E14

R21

R26

R76

C25

C32

C70

R81

R86

R22

CN11

C11

D25

E12

R130

IC5

C10

R121

R126

R116

R31

C85

D16

C106

R151

CX6

C63

CN7

E32

E37

R97

R49

ZR1

IC18

E27

LED2

E10

R72

E29

R117

CN10

CN4

IC16

E15

LED1

LED2

Fig. 25 – Sizes 09−12 (208−230V)

LEGEND:

LED1 − Flashing once per second (low speed flashing)(standby). Flashing once per half second (high speed
flashing)(standby)(error). Always on (running)

LED2 − Always on (Power Supply Light)

Summary of Contents for 38MAQB09-1

Page 1: ...onal injury Understand these signal words DANGER WARNING and CAUTION These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal i...

Page 2: ...T B 1 1 SYSTEM TYPE Q HEAT PUMP NOT USED OUTDOOR UNIT 38 MA 3 09 38 OUTDOOR UNIT MA MODEL VOLTAGE 1 115 1 60 3 208 230 1 60 NOMINAL CAPACITY 09 3 4 TON 12 1 TON 18 1 1 2 TONS 24 2 TONS 30 2 1 2 TONS U...

Page 3: ...Charge lbs kg 2 76 1 25 2 76 1 25 2 76 1 25 2 76 1 25 4 19 1 9 5 18 2 35 6 62 3 0 Metering Device EEV EEV EEV EEV EEV Capillary Tube Capillary Tube Outdoor Coil Face Area Sq Ft 9 2 9 2 9 2 9 2 16 0 2...

Page 4: ...ts System Size 9K 12K 9K 12K V Ph Hz 115 1 60 208 230 1 60 Height H in mm 21 97 558 21 97 558 21 97 558 21 97 558 Width W in mm 31 89 810 31 89 810 31 89 810 31 89 810 Depth D in mm 12 2 310 12 2 310...

Page 5: ...NS CONT 5 5 8QLW LQFK PP Fig 2 Outdoor Unit 18K Table 4 Outdoor Units System Size 18K V Ph Hz 208 230 1 60 Height H in mm 27 56 700 Width W in mm 33 27 845 Depth D in mm 12 60 320 Weight Net lbs kg 10...

Page 6: ...LQFK PP Fig 3 Outdoor Unit 24K 30K Table 5 Outdoor Units System Size 24K 30K V Ph Hz 208 230 1 60 Height H in mm 31 89 810 31 89 810 Width W in mm 37 20 945 37 20 945 Depth D in mm 15 55 395 15 55 395...

Page 7: ...let Air inlet C E Fig 4 Clearances Outdoor Table 6 Clearances UNIT MINIMUM VALUE in mm A 24 609 B 24 609 C 24 609 D 4 101 E 4 101 NOTE The outdoor unit must be mounted at least 2in 50mm above the maxi...

Page 8: ...e indoor unit Two wires are high voltage AC power one is communication wiring and the other is a ground wire Recommended Connection Method for Power and Communication Wiring To minimize communication...

Page 9: ...in Power Supply L1 L2 S L1 L2 CONNECTING CABLE OUTDOOR TO INDOOR Indoor Unit Power Supply 208 230 1 60 Indoor Signal High Voltage GND Ground Power to Indoor Unit Indoor Signal High Voltage 208 230 1 6...

Page 10: ...ER CRANKCASE EXPANSIVE VALVE 6 5 CN1 Fig 7 Wiring Diagram for 9K 12K 115V Table 8 Outdoor Unit Control Board CODE PART NAME CN1 Output Pin 5 6 12V Pin 1 Pin 4 Pulse waveform 0 12V CN15 Input Pin 1 Pin...

Page 11: ...agram for 9K 12K 208 230V Table 9 Outdoor Unit Control Board CODE INPUT or OUTPUT VALUE CN31 Output Pin 5 6 12V Pin 1 Pin 4 Pulse waveform 0 12V CN21 Input Pin3 4 3 3V Pin 2 0V Pin 1 Pin 5 0 3 3V CN22...

Page 12: ...6 72 1 225 81 7 32 5 6833 E U L B 3 CN14 CN15 1 7 HEATER 1 2 R E T A E H Fig 9 Wiring Diagram for 18K 208 230V Table 10 Outdoor Unit Control Board CODE INPUT or OUTPUT VALUE CN7 CN8 Input 230V High v...

Page 13: ...or Unit Control Board CODE INPUT or OUTPUT VALUE L_IN Power Voltage AC 230V CN11 Power Voltage AC 230V CN16 Relative to the N terminal voltage DC24V CN15 Maximum voltage DC 5V CN6 Maximum output volta...

Page 14: ...Y1 HEAT2 HEAT1 CN12 CN11 BLACK RED BLUE BLUE BLUE YELLOW RED BLACK RED BLACK L2 72 1 225 81 7 32 5 6833 L2 S L1 5 5 YELLOW S 2 The electric heating belt of compressor The electric heating belt of chas...

Page 15: ...WZDK40 38G W 1 ZKFN 50 8 2 WZDK120 38G 1 WZDK120 38G W Phase 3 3 3 3 3 3 3 FLA A 0 14 0 14 0 42 0 42 0 95 0 47 1 21 Type DC DC DC DC DC DC DC Insulation Class E E E E E E E Safe Class IPX0 IPX0 IPX0...

Page 16: ...Nominal Tube Wall mm 0 24 0 24 0 24 0 24 0 24 0 24 0 27 Tube Enhancement Yes No Yes inner groove Yes inner groove Yes inner groove Yes inner groove Yes inner groove Yes inner groove Yes inner groove...

Page 17: ...17 REFRIGERATION CYCLE DIAGRAMS Fig 12 Refrigerant Cycle Diagram Heat Pumps...

Page 18: ...10 3 10 3 Standard Piping Length ft m 25 7 5 25 7 5 25 7 5 25 7 5 25 7 5 25 7 5 25 7 5 Max outdoor indoor height difference ft m 32 10 32 10 32 10 32 10 65 20 65 20 82 25 Max Piping Length with no ad...

Page 19: ...pulling a vacuum of 500 microns and a vacuum gage capable of accuratelymeasuring the vacuum depth The deep vacuum method is the most positive way of assuring a system is free of air and liquid water...

Page 20: ...Sensor Protection at Open Circuit and Breaking Disconnection When there is only one malfunctioning temperature sensor the air conditioner keeps working however displays a error code in case of any em...

Page 21: ...es Recommended Steps 1 Refer to the diagnostic hierarchy charts below and determine the problem at hand 2 Go to the chart listed in the diagnostic hierarchy and follow the steps in the chart for the s...

Page 22: ...c Capacitors HIGH VOLTAGE CAUTION Fig 22 Electrolytic Capacitors For other models please connect discharge resistance approx 100 40W or soldering iron plug between terminals of the electrolytic capaci...

Page 23: ...1 time O F0 Overload current protection H 2 times O F1 Outdoor ambient temperature sensor T4 open circuit or short circuit H 3 times O F2 Condenser coil temperature sensor T3 open circuit or short ci...

Page 24: ...115V Fig 24 Sizes 09 12 115V LEGEND S LED1 The status light by which you can judge the unit s status NORMAL or ERROR standby Flashes once per second low speed flashing error Flashes once per half sec...

Page 25: ...60 C59 C58 C45 C43 C40 C38 C34 C31 C46 C51 R65 R66 IC1 E28 E17 E11 E9 E7 CN16 C33 T1 RY2 RY3 RY4 CN2 ZR2 L1 C37 Rdi R163 R157 R141 R139 R135 R134 R132 R120 R113 R112 R111 R110 R105 R90 R89 R88 R85 R84...

Page 26: ...62 R110 E9 E7 C41 C72 C51 C50 C31 R605 R602 R606 R601 R603 R604 FANIPM E8 C414 R508 R507 CN414 C506 C505 C60 R63 E407 R89 E403 E21 E20 E19 E2 R148 C66 C6 C1 R18 D7 IGBT1 D5 C80 C79 R154 LED1 Yellow IC...

Page 27: ...33 R32 R31 R30 R29 R28 R27 R26 R25 R24 R23 R22 R21 R20 R19 R18 R17 R16 R15 R14 R13 R11 R10 R9 R8 R7 R6 R5 R4 R3 R2 R1 Q4 Q3 Q2 PTC1 P 1 GND IC16 IC14 IC13 IC12 IC11 IC10 IC8 IC7 IC5 IC4 IC3 IC2 FUSE2...

Page 28: ...9 IC18 IC17 IC16 IC15 IC14 IC13 IC12 IC10 IC9 IC8 IC7 IC6 IC5 IC2 IC1 FUSE2 5A 250V FUSE1 T30A 250V E21 E20 E19 E16 E14 E13 E11 E9 E8 E5 E4 E3 E1 DSP1 DSA1 D28 D27 D26 D25 D24 D23 D22 D21 D20 D19 D18...

Page 29: ...osed causes Installation mistake PCB faulty Troubleshooting Yes Replace the indoor outdoor main PCB Power off then restart the unit 2 minutes later EEPROM A read only memory whose contents can be eras...

Page 30: ...ulty Troubleshooting Measure Vs is it a positive fluctuation Vs represents the voltage S and N of the outdoor unit Red pan S Black pan N Power off then restart the unit 2 minutes later Replace the ind...

Page 31: ...ing normal the voltage moves alternately between 50V to 50V If the outdoor unit has a malfunction the voltage will move alternately with positive value If the indoor unit has malfunction the voltage w...

Page 32: ...receive a zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal Supposed causes Connection mistake PCB faulty Troubleshooting Check if the connections and...

Page 33: ...the failure Supposed causes Wiring mistake Fan ass y faulty Fan motor faulty PCB faulty Troubleshooting Power off then restart the unit 2 minutes later Shut off the power supply Rotate the fan by han...

Page 34: ...lack GND 0V 4 White Vcc 14 17 5V 5 Yellow Vsp 0 5 6V 6 Blue FG 14 17 5V Table 20 DC motor voltage input and output voltage 115V NO COLOR SIGNAL VOLTAGE 1 Red Vs Vm 140V 190V 2 3 Black GND 0V 4 White V...

Page 35: ...he sampling voltage is lower than 0 06V or higher than 4 94V the LED displays the failure Supposed causes Wiring mistake Sensor faulty PCB faulty Troubleshooting Check the connection between the tempe...

Page 36: ...run for 4 seconds and this situation occurs 3 times the display area displays EC and the air conditioner turns off Supposed causes T2 sensor faulty Indoor PCB faulty System problems such as leakage or...

Page 37: ...uses Power supply problems System blockage PCB faulty Wiring mistake Compressor malfunction Troubleshooting Check the power supply Check the connections and wires Stop the unit No Yes No Correct the c...

Page 38: ...IPM malfunction Outdoor fan ass y faulty Compressor malfunction Outdoor PCB faulty Troubleshooting Check the wiring between main the PCB and the compressor Correct the connection or replace the wires...

Page 39: ...39 DIAGNOSIS AND SOLUTION CONT Fig 34 P U Fig 35 P V...

Page 40: ...40 DIAGNOSIS AND SOLUTION CONT Fig 36 P W Fig 37 N U...

Page 41: ...41 DIAGNOSIS AND SOLUTION CONT Fig 38 N V Fig 39 N W...

Page 42: ...sed causes Power supply problems System leakage or block PCB faulty Troubleshooting Check the power supply Check the connections and wires Stop the unit No Yes No Correct the connections or replace th...

Page 43: ...faulty Troubleshooting Check the air flow system of indoor and outdoor units Clear up the air inlet and outlet or the heat exchanger of indoor and outdoor units Yes No Yes Yes Power off then restart t...

Page 44: ...s Wiring mistake IPM malfunction Outdoor fan ass y faulty Compressor malfunction Outdoor PCB faulty Troubleshooting Check the wiring between main PCB and compressor Correct the connection or replace t...

Page 45: ...CB measure the resistance value with a tester Fig 41 Tester Temperature sensors Room temp T1 sensor Indoor coil temp T2 sensor Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Compressor dis...

Page 46: ...71 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 0 359...

Page 47: ...84 115 239 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 78 172 7 321 118 244 2 233 1 30 190 5 39 102 30 36 79 174 7...

Page 48: ...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 42 8 36 96 8 67 152 6 98 208 4 129 264 2 7 44 6 37 98 6 68 1...

Page 49: ...f each winding by using the tester Fig 42 Input Terminal Table 24 Resistance Value POSITION RESISTANCE VALUE DA110S1C 30FZ DA130M1C 31FZ DA250S2C 30MT TNB306FPGMC L Blue Red 0 8 20 C 68 F 1 77 20 C 68...

Page 50: ...ing Chart F C ODT IDT 57 53 13 89 11 67 47 43 8 33 6 11 37 33 2 78 0 56 27 33 2 78 5 17 13 8 33 10 56 BAR 55 30 3 28 5 25 3 22 8 20 8 BAR 65 32 5 30 0 26 6 25 4 23 3 BAR 75 33 8 31 5 27 8 26 3 24 9 Ta...

Page 51: ...6 11 2 Table 30 Cooling Chart F C ODT IDT 75 23 89 85 29 44 95 35 105 40 56 115 46 11 PSI 70 59 119 113 117 125 147 PSI 75 63 124 120 126 132 155 PSI 80 67 135 129 132 140 162 Table 31 Cooling Chart...

Page 52: ...the panel plate 1 Stop the air conditioner and turn OFF the power breaker 2 Refer to the images on the right hand side to locate the panel s screws 3 Remove the top panel screws and remove the top pa...

Page 53: ...late screws and remove the right side plate 2 Fan assembly How to remove the fan assembly 1 Remove the panel plate as stated in section 1 then remove the hex nut securing the fan and then remove the f...

Page 54: ...09 12 CONT 2 Loosen the hooks and then open the electronic control box cover 3 Disconnect the fan motor connector from the electronic control board 4 Remove the fan motor screws 4 5 Remove the fan mot...

Page 55: ...compressor and the electrical heaters 2 Release the reactor connector 3 Pull out the two blue wires connected to the four way valve 4 Remove the compressor top temp sensor connectors condenser coil te...

Page 56: ...ur way valve 1 Complete the steps in sections 1 2 3 2 Recover the refrigerant from the refrigerant circuit 3 Remove the coil screw and then remove the coil 4 Detach the welded parts of four way valve...

Page 57: ...ssor 1 Complete the steps in sections 1 2 and 3 2 Remove the discharge pipe and suction pipe with a burner 3 Remove the hex nuts and washers securing the compressor on the bottom plate 4 Lift the comp...

Page 58: ...the right to locate the fixing panel screws 3 Remove the top panel screws and remove the top panel 4 Remove the front panel screws including the motor holder securing screws and then remove the front...

Page 59: ...9 DISASSEMBLY INSTRUCTIONS SIZE 18K CONT 5 Remove the right side plate screws and remove the right side plate Top panel screw Top panel screw Right rear plate screw Motor holder screw Left plate screw...

Page 60: ...hex nut securing the fan and then remove the fan 2 Remove the one screw Loosen the hooks and open the electronic control box cover 3 Release the fan motor connector and the four way valve connector C...

Page 61: ...or screws 4 5 Remove the fan motor 3 Electrical parts How to remove the electrical parts 1 Complete the steps in sections 1 and 2 then remove the two compressor connectors and the compressor crankcase...

Page 62: ...62 DISASSEMBLY INSTRUCTIONS SIZE 18K CONT 3 Remove the reactor connector 4 Remove the grounding screw 5 Remove the power supply wires L1 L2 S 6 Remove the electronic control box...

Page 63: ...ove the four way valve ass y The picture of four way valve may be different from the one on your side 5 Compressor How to remove the compressor 1 Complete the steps in sections 1 2 and 3 2 Remove the...

Page 64: ...reaker 2 Refer to the photos on the right to locate the panel screws 3 Remove the top panel screws and remove the top panel 4 Remove the front panel screws including the motor holder screws and then r...

Page 65: ...TRUCTIONS SIZES 24K 30K CONT 5 Remove the right side plate screws and remove the right side plate Top panel screws Electronic control box Top panel screws Front panel screws Motor holder screws Right...

Page 66: ...NS SIZES 24K 30K CONT 2 Fan ass y How to remove the fan ass y 1 After removing the panel plate see section 1 remove the hex nut securing the fan and remove the fan Compressor and liquid gas separator...

Page 67: ...24K 30K CONT 2 Remove the fan motor connector 3 Remove the four screws and then remove the fan motor 3 Electrical parts How to remove the electrical parts 1 Complete the steps in sections 1 and 2 the...

Page 68: ...68 DISASSEMBLY INSTRUCTIONS SIZES 24K 30K CONT 2 Remove the screws securing the IPM board 3 Release the three temp sensor connectors 4 Remove the two blue wires connected to the four way valve...

Page 69: ...ressor top temp sensor connectors condenser coil temp sensor T3 outdoor ambient temp sensor T4 and discharge temp sensor T5 1 Remove the power supply wires L1 L2 S 2 Remove the electronic control box...

Page 70: ...3 2 Recover the refrigerant from the refrigerant circuit 3 Remove the coil screw and then remove the coil 4 Detach the welded parts of the four way valve and the pipe 5 Remove the four way valve ass y...

Page 71: ...essor 1 Complete the steps in sections 1 2 and 3 2 Remove the discharge pipe and suction pipe with a burner 3 Remove the hex nuts and washers securing the compressor on the bottom plate 4 Lift the com...

Page 72: ...orporation S 7310 W Morris St S Indianapolis IN 46231 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog No 38MAQ 01SM Repl...

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Carrier 38MAQB09-1, Service Manual

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