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Bryant 538PAQ009RBMA, Service Manual

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Bryant 538PAQ009RBMA Service Manual Download Page 45

45

Main Parts Check

Temperature Sensor Checking

Disconnect the temperature sensor from the PCB, 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 discharge temp.(T5) sensor.

Measure the resistance value of each winding by using the multi−meter.

Summary of Contents for 538PAQ009RBMA

Page 1: ...sonal 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 injury or death WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property ...

Page 2: ...IT 538 P MA 009 538 OUTDOOR UNIT P MODEL VOLTAGE A 115 1 60 E 208 230 1 60 NOMINAL CAPACITY 009 3 4 TON 012 1 TON 018 1 1 2 TONS 024 2 TONS 030 2 1 2 TONS UNIT TYPE R OUTDOOR UNIT B MA ALL MODELS B ALL MODELS 01 16 Week of Manufacture Year of Manufacture 10001 Sequential Serial Number V V ALL MODELS Use of the AHRI Certified TM Mark indicates a manufacturer s participation in the program For verif...

Page 3: ...R410A R410A 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 21 1 17 2 No Rows 2 2 2 2 2 3 3 Fins per inch 21 21 21 21 18 18 17 Circuits 4 4 4 4 6 8 6 Compressor Type Rotary Inverter Rotary Inverter Rotary Inverter Rotary Inverter Rotary Inverter Rota...

Page 4: ...its 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 12 2 310 12 2 310 Weight Net lbs kg 82 45 37 4 82 45 37 4 82 45 37 4 82 45 37 4 ...

Page 5: ...ONS 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 102 51 46 5 ...

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 Weight Net lbs kg 137 57 62 4 157 63 71 5 ...

Page 7: ...tlet 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 maximum anticipated snow depth ...

Page 8: ... 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 wiring interference Power Wiring The main power is supplied to the outdoor unit The field supplied power wiring from the outdoor unit to the indoor unit consists of three 3 wires and provides the power...

Page 9: ...ain 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 60 FIELD POWER SUPPLY GND 208 230 1 60 9K to 30K 230V Indoor Unit 9K to 30K 230V Outdoor Unit Fig 6 9K 208 230V 12K 208 230V 18K 24K 30K Notes 1 Do not use thermostat wire for any connection between i...

Page 10: ...TER 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 2 0 1 8V CN16 Input Pin1 Pin3 Pin4 Pin5 0 1 8V CN19 Output Pin 1 Pin 5 0 115V High voltage CN31 CN33 Output 115VAC High voltage CN32 CN34 Output 115 VAC High voltage CN26 CN28 Output 115 VAC for 4 w...

Page 11: ...iagram 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 Input Pin1 3 3V Pin 2 0 3 3V CN37 Output 230 VAC High voltage CN9 1 CN32 1 Output Connection of the high voltage CN1 Input 230 VAC High voltage CN2 Input 230 VAC High voltage CN3 Connection to the e...

Page 12: ...R 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 voltage CN2 Output Connection of the high voltage CN3 CN4 Output High voltage for 4 way control CN11 CN16 Output 230V High voltage for HEATER CN5 Output Pulse 0 320V for DC FAN CN12 CN13 Output Connec...

Page 13: ...oor 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 voltage AC230V CN4 Indoor fan interface Maximum voltage DC310V CN5 Stepper motor interface Maximum voltage between the lines DC12V P_1 Ground CN8 Room temperature sensor interface maximum voltage DC 5V CN...

Page 14: ...AY1 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 chassis Fig 11 Wiring Diagram for 30K 208 230V Table 12 Outdoor Unit Control Board CODE INPUT or OUTPUT VALUE CN1 CN2 Input 230V High voltage S Output Connection of the high voltage CN11 CN12 Output Puls...

Page 15: ...1 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 IPX0 IPX0 IPX0 IPX0 Input Power W 42 42 46 46 116 145 150 Output Power W 40 40 40 40 50 120 120 Range of Current A 0 14 10 0 14 10 0 42 10 0 42 10 0 95 10 0 47 10 1 21 10 Rated Current A 0 14 0 14 0 ...

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 Tube Material Copper Copper Copper Copper Copper Copper Copper Coil length x height x width inch 66 73x19 84x1 50 66 73x19 84x1 50 66 73x19 84x1 50 66 73x19 84x1 50 89 96x25 63x1 57 102 28x29 76x1 57 9...

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

Page 18: ...3 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 additional refrigerant charge ft m 26 8 26 8 26 8 26 8 26 8 26 8 26 8 Max Piping Length ft m 82 25 82 25 82 25 82 25 98 30 98 30 164 50 Additional refrigerant charge between Standard Max piping length ...

Page 19: ...f 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 see Fig 15 500 MINUTES 0 1 2 3 4 5 6 7 1000 1500 LEAK IN SYSTEM VACUUM TIGHT TOO WET TIGHT DRY SYSTEM 2000 MICRONS 2500 3000 3500 4000 4500 5000 Fig 15 Deep Vacuum Graph Triple Evacuation Method The ...

Page 20: ...s 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 emergency use When there is more than one malfunctioning temperature sensor the air conditioner stops working Operation Modes and Functions Fan Mode 1 Outdoor fan and compressor stop 2 Temperature sett...

Page 21: ...auges 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 selected problem For ease of service the systems are equipped with a diagnostic code display LED on both the indoor and outdoor units The outdoor diagnostic display is on the outdoor unit board and ...

Page 22: ...c Capacitors HIGH VOLTAGE CAUTION Fig 22 Electrolytic Capacitors For other models please connect discharge resistance approx 100Ω 40W or soldering iron plug between terminals of the electrolytic capacitor on the contrary side of the outdoor PCB Fig 23 Discharging Position NOTE Fig 23 is for reference only The plug associated with your unit may differ ...

Page 23: ...H 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 circuit H 4 times O F3 Compressor discharge temperature sensor T5 open circuit or short circuit H 5 times O F4 Outdoor unit EEPROM parameter error H 6 times O F5 Outdoor fan speed has been out of contr...

Page 24: ...2 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 second high speed flashing running always on ...

Page 25: ... C60 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 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 R6 R5 R3 R2 R1 LED1 J6 IC11 FUSE1 D3 D2 D1 CN3 C96 C90 C75 C73 C57 C52 C50 C49 C6 C44 C41...

Page 26: ...C62 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 IC10 CN38 C4 C28 C406 R67 C84 C10 C11 IC4 C12 C38 R34 R37 R47 R88 IC32 R39 R35 R36 R19 R10 E6 IC3 C57 R51 C30 DSA1 C3 C82 C5 ZR2 ZR1 FUSE1 CN6 CN8 CN6 1 R121 R6 R4 R3 IC1 E22 R119 R117 R56 R33 R29 R28 ...

Page 27: ...R33 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 T30A 250VAC E13 E12 E10 E9 E6 E4 E2 E1 D19 D18 D17 D16 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 CT1 CONdebug1 CN25 S A CN24 D CN23 S B CN22 C CN21 TO DRIVE CN20 S C CN19 B CN18 A CN17 T3 T4 CN16 S D ...

Page 28: ...19 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 D17 D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D3 D2 D1 CONdebug CN44 HEAT2 CN43 FAN CN42 C CN41 C CN40 HEAT1 CN34 CN33 CN30 CN29 CN28 CN27 CN26 CN22 4 WAY CN20 CN18 CN17 CN16 CN14 CompTop CN12 CN11 ...

Page 29: ...posed 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 erased and reprogrammed using a pulsed voltage For the EEPROM chip location please refer to Fig 29 Fig 29 Outdoor PCB 18K Model NOTE Fig 29 is for reference only and the PCB pictured may differ from the ...

Page 30: ...aulty 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 indoor main PCB Power on Is the error resolved No Check the indoor wiring connection Yes Check whether the reactor is normal Yes No Check the outdoor wiring connection Replace the reactor Yes Replace th...

Page 31: ...ning 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 will have a certain value Fig 31 Test the Reactor Resistance Use a multimeter to test the resistance of the reactor which does not connect with the capacitor The normal value should be around zero 0 o...

Page 32: ...t 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 power supply are normal Correct the connections Turn on the unit when the power supply is good No Yes Indoor main PCB is defective Replace indoor main PCB ...

Page 33: ...s 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 hand The unit operates normally Find the cause and resolve it Check the fan motor wiring No Yes No Correct the connections No No Replace the fan motor Yes Yes Measure the voltage for the fan motor from ...

Page 34: ...Black 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 Vcc 14 17 5V 5 Yellow Vsp 0 5 6V 6 Blue FG 14 17 5V 2 Outdoor DC Fan Motor control chip is in the outdoor PCB S Power on the unit and check if the fan runs normally If the fan runs normally the PCB ha...

Page 35: ...the 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 temperature sensor and PCB Correct the connection No Yes Replace indoor or outdoor main PCB Measure the resistance value of the sensor Replace the sensor No Yes Fig 33 Check the connection ...

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 blocking Troubleshooting Check cool air blowing out from indoor air outlet Yes Yes No Check for system leaks No Power off then restart the unit 2 minutes later Replace indoor PCB Yes Repair the leak...

Page 37: ...auses 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 connections or replace the wires Yes Replace the outdoor unit Yes Check the reactor No Replace outdoor main PCB Check for system blockage Yes No Clear the blockage Check the compressor resistance valu...

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 and connectors Yes No Check the IPM No Yes Replace the IPM board or replace the main PCB Check the outdoor fan and the outdoor unit ventilation No Please refer to the solution of ǏFan Speed Has Been ...

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: ...osed 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 the wires Yes Replace the reactor Yes No Replace the IPM board Check the voltage between P and N Check the reactor Yes No Replace outdoor main PCB Fig 40 Test NOTE Measure the DC voltage between the P ...

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 the unit 10 minutes later Check the temperature of the compressor No Check refrigerant system Yes Check the overload protector Correct the connection No Measure the resistance between the two ports of...

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 the wires and connectors Yes No Check the IPM No Yes Replace the IPM board or replace the main PCB Check the outdoor fan and the outdoor unit ventilation No Please refer to the solution of ǏFan Speed H...

Page 45: ...PCB 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 discharge temp T5 sensor Measure the resistance value of each winding by using the multi meter ...

Page 46: ...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 0 36954 0 32 35 2024 40 104 5 17519 80 176 1 17393 120 248 0 35982 1 34 33 3269 41 106 4 96392 81 178 1 13604 121 250 0 35042 2 36 31 5635 42 108 4 76253 82 180 1 09958 122 252 0 3413 3 37 29 9058 43 109 4 5705 83 181 1 06448 123 253 0 33246 4 39 28 3459 44 111 4...

Page 47: ...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 78 172 7 321 118 244 2 233 1 30 190 5 39 102 30 36 79 174 7 086 119 246 2 174 0 32 180 9 40 104 29 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 ...

Page 48: ...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 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 8 102 215 6 133 271 4 11 51 8 41 105 8 72 161 6 103 217 4 134 273 2 12...

Page 49: ... 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 8Ω 20 C 68 F 1 77Ω 20 C 68 F 0 55Ω 20 C 68 F 0 53Ω 20 C 68 F Blue Black Red Blue ...

Page 50: ...ating 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 Table 27 Heating 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 PSI 55 439 413 367 330 302 PSI 65 471 435 386 368 339 PSI 75 489 457 403 381 362 Tabl...

Page 51: ...9 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 F C ODT IDT 75 23 89 85 29 44 95 35 105 40 56 115 46 11 MPA 70 59 0 82 0 78 0 81 0 86 1 01 MPA 75 63 0 86 0 83 0 87 0 91 1 07 MPA 80 67 0 93 0 89 0 91 0 96 1 12 Fig 44 Cooling Chart ...

Page 52: ...e 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 panel Top panel screw Water connector screws on right side plate Front panel screws Screws of top panel Top panel screw Big handle screws on right side plate Rear net screws Left plate screw ...

Page 53: ...plate 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 fan Top panel screw Motor holder screws Reactor Compressor and liquid gas separator Nut securing the fan Left plate screws Front panel screws Electronic control box Fan ...

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 motor Four screws Fan motor connector ...

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 temp sensor T3 outdoor ambient temp sensor T4 and the discharge temp sensor T5 Reactor connector Four temp sensor connectors Compressor connector Two blue wires of four way valve ...

Page 56: ...our 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 and pipe 5 Remove the four way valve ass y The picture of four way valve may be different from the one on your side Four way valve Four way valve coil secured by one screw Welded parts ...

Page 57: ...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 compressor from the base pan assembly Discharge pipe and suction pipe Compressor nuts ...

Page 58: ...n 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 panel Water connector Screws on right side plate Front panel screws Top panel screws Front Panel screws Top panel screws Big handle screws on right side of the plate Right rear plate screws 1 ...

Page 59: ...59 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: ...e 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 Compressor and liquid gas separator Electronic control box Nut securing the fan Two reactors Fan Fan motor connector Four way valve connector ...

Page 61: ...tor 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 heater 2 Release the three temp sensor connectors Four screws ...

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: ...move 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 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 compressor from the base pan assembly Discharge pipe and suction...

Page 64: ...breaker 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 remove the front panel Front panel screws Top panel screws Big handle screws on right side plate Right side panel screws Top panel screws Water connector screws on right side plate ...

Page 65: ...STRUCTIONS 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 side panel screws ...

Page 66: ...ONS 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 Nut securing the fan Fan ...

Page 67: ...S 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 then remove the compressor connector ...

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: ...pressor 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 Two blue wires of the four way valve Four temp sensor connectors ...

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 The picture of the four way valve may differ from the actual valve Four way valve Four way valve coil secured with one screw Welded parts ...

Page 71: ...ressor 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 compressor from the base pan assembly Discharge pipe and suction pipe Compressor nuts ...

Page 72: ...iscontinue or change at any time specifications or designs without notice and without incurring obligations E2016 Bryant Heating Cooling Systems D 7310 W Morris St D Indianapolis IN 46231 Edition Date 09 16 Replaces NEW Catalog No SM538PR 01 ...

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