Bryant 619PHA Series Service Manual

Bryant 619PHA Series Service Manual

High wall ductless system
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619PHA
High Wall Ductless System
Sizes 09 to 24

TABLE OF CONTENTS

SAFETY CONSIDERATIONS ....................................................... 1
INTRODUCTION............................................................................ 1
MODEL NUMBER NOMENCLATURE ....................................... 2
SPECIFICATIONS .......................................................................... 3
DIMENSIONS ................................................................................. 4
CLEARANCES................................................................................ 6
ELECTRICAL DATA ..................................................................... 7
WIRING ........................................................................................... 7
CONNECTION DIAGRAM............................................................ 8
WIRING DIAGRAM....................................................................... 9
FAN AND MOTOR SPECIFICATIONS ........................................ 11
REFRIGERATION CYCLE DIAGRAM........................................ 11
REFRIGERANT LINES .................................................................. 12
SYSTEM EVACUATION AND CHARGING ............................... 12
OPERATION MODES AND FUNCTIONS ................................... 13
ROR CODE...................................................................................... 20
QUICK MAINTENANCE BY ERROR CODE .............................. 24
TROUBLESHOOTING BY ERROR CODE .................................. 25
DIAGNOSIS AND SOLUTION...................................................... 27
DISASSEMBLY INSTRUCTIONS ................................................ 40
APPENDICES.................................................................................. 64

SAFETY CONSIDERATIONS

Installing, starting up, and servicing air-conditioning equipment can
be hazardous due to system pressures, electrical components, and
equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should install,
start-up, and service this equipment.
Untrained personnel can perform basic maintenance functions such as
cleaning coils. All other operations should be performed by trained
service personnel.
When working on the equipment, observe the precautions in the
literature and on tags, stickers, and labels attached to the equipment.
Follow all safety codes. Wear safety glasses and work gloves. Keep a
quenching cloth and fire extinguisher nearby when brazing. Use care
in handling, rigging, and setting bulky equipment.
Read this manual thoroughly and follow all the warnings or cautions
included in literature and attached to the unit. Consult local building
codes and National Electrical Code (NEC) for special requirements.
Recognize safety information. This is the safety-alert symbol
When you see this symbol on the unit and in instructions or manuals,
be alert to the potential for personal injury. Understand these signal
words: DANGER, WARNING, and CAUTION.
Service Manual
These words are used with the safety-alert symbol. DANGER
identifies the most serious hazards which will result in severe personal
PAGE
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 damage. NOTE is used to highlight suggestions which will
result in enhanced installation, reliability, or operation.

INTRODUCTION

.
This service manual provides the necessary information to service,
repair, and maintain the indoor units. This manual has an appendix
with data required to perform troubleshooting. Use the Table of
Contents to locate a desired topic.
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Before installing, modifying, or servicing the system, the main
electrical disconnect switch must be in the OFF position. There may
be more than 1 disconnect switch. Lock out and tag switch with a
suitable warning label.
WARNING
EXPLOSION HAZARD
Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.
Never use air or gases containing oxygen
for leak testing or operating refrigerant
compressors. Pressurized mixtures of air
or gases containing oxygen can lead to
an explosion.
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or
improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant pipe in the
ground. If any section of pipe is buried, there must be a 6 in. (152 mm)
vertical rise to the valve connections on the outdoor units. If more
than the recommended length is buried, refrigerant may migrate to the
cooler buried section during extended periods of system shutdown.
This causes refrigerant slugging and could possibly damage the
compressor at start-up.

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Summary of Contents for Bryant 619PHA Series

  • Page 1: Table Of Contents

    619PHA High Wall Ductless System Sizes 09 to 24 Service Manual TABLE OF CONTENTS These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal PAGE injury or death. WARNING signifies hazards which could result in personal injury or death.
  • Page 2: Model Number Nomenclature

    MODEL NUMBER NOMENCLATURE Table 1 —Unit Sizes SYSTEMS TONS VOLTAGE/PH/HZ INDOOR MODEL 619PHAQ09XA3 619PHAQ12XA3 208-230/1/60 619PHAQ18XA3 619PHAQ24XA3 INDOOR UNIT 619 = FAN COIL UNIT VOLTAGE P = MODEL 3 = 208/230-1-60 SYSTEM TYPE A = VARIATION H = HIGH WALL X = NOT USED MAJOR SERIES NOMINAL CAPACITY...
  • Page 3: Specifications

    SPECIFICATIONS Table 2 — Specifications SIZE SYSTEM Indoor Model 619PHAQ09XA3 619PHAQ12XA3 619PHAQ18XA3 619PHAQ24XA3 Voltage, Phase, Cycle V/Ph/Hz 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 ELECTRICAL Power Supply Indoor unit powered from outdoor unit Wireless Remote controller Standard Standard Standard Standard (°F/°C Convertible) CONTROLS Wired Remote controller Optional Optional...
  • Page 4: Dimensions

    DIMENSIONS Sizes 9K and 12K Table 3 — Dimension Sizes 09K and 12K HIGH WALL UNIT SIZE Voltage (208/230V) (208/230V) Height In. (mm) 11.7 (298) 11.7 (298) Width In. (mm) 35.2 (895) 35.2 (895) Depth In. (mm) 9.8 (248) 9.8 (248) Weight-Net Lbs (kg) 37.48 (17)
  • Page 5 Sizes 18K and 24K Table 4 — Dimension Sizes 18K and 24K HIGH WALL UNIT SIZE Voltage (208/230V) (208/230V) Height In. (mm) 14.25 (362) 14.25 (362) Width In. (mm) 49.57 (1259) 49.57 (1259) Depth In. (mm) 11.10 (282) 11.10 (282) Weight-Net Lbs (kg) 43.4 (19.7)
  • Page 6: Clearances

    CLEARANCES CEILING 5.9in. (15cm) min. 4.75 in 4.75 in (12 cm) (12 cm) min. min. 6 ft (1.8m) FLOOR Fig. 3 — Indoor Unit Clearances NOTE: The top clearance recommended for proper return airflow is 5.9 in (15cm). Reduction of this clearance may decrease the performance of these units.
  • Page 7: Electrical Data

    ELECTRICAL DATA Table 5 — Electrical Data INDOOR FAN MAX FUSE CB AMP HIGH WALL UNIT SIZE V-Ph-Hz 0.34 0.027 Refer to outdoor unit installation instructions – 0.34 0.027 Indoor unit powered by the outdoor unit Heat Pump Models 208/230-1-60 0.082 0.082 WIRING...
  • Page 8: Connection Diagram

    CONNECTION DIAGRAM 208/230-1-60 FIELD POWER SUPPLY CONNECTING CABLE OUTDOOR TO INDOOR L1 L2 L1 L2 Main Power to Indoor Indoor Indoor Unit Power Supply Indoor Unit Signal Signal Power Supply Ground High High 208/230-1-60 208/230-1-60 Voltage 208/230-1-60 Voltage 208-230V Indoor Unit 208-230V Outdoor Unit Fig.
  • Page 9: Wiring Diagram

    WIRING DIAGRAM Sizes 09K to 12K INDOOR Indoor Wiring Diagram Earth Ground CN20 P1_1 Vertical Horizontal L-OUT PIPE TEMPERATURE SENSOR MAIN BOARD BLUE(BLACK) L-IN YELLOW N-IN CN1 & CN1A CN10 CN32 +12V & Display L2 S Wi-Fi INDOOR UNIT CN43 CN40 MULTI-FUNCTION CONTROL BOARD OUTDOOR UNIT...
  • Page 10 Sizes 18K to 24K CN 2 L-IN C N11 INDOOR UNIT Wire Controller OPTIONAL To Remote Switch To CCM Comm.Bus or 485 Wire-controller Fig. 6 — Wiring Diagram - Sizes 18K and 24K CODE PART NAME MAIN BOARD S (Cn16) Output:0-24VDC Communication port to outdoor N(CN11) Input:230VAC High Voltage N line from outdoor...
  • Page 11: Fan And Motor Specifications

    FAN AND MOTOR SPECIFICATIONS Table 6 — Fan and Motor Specifications HIGH WALL UNIT SIZE (208/230V) (208/230V) (208/230V) (208/230V) Material glass fiber+AS glass fiber+AS glass fiber+AS glass fiber+AS Type GL-108*670-IN GL-108*670-IN GL-118*955-I GL-118*955-I HIGH WALL FAN Diameter In (mm) 4.25 (108) 4.25 (108) 4.65(118)...
  • Page 12: Refrigerant Lines

    REFRIGERANT LINES IMPORTANT: Both refrigerant lines must be insulated separately. Table 2 on page 3 lists the pipe sizes for the indoor unit. Refer to the outdoor unit installation instructions for other allowed piping lengths and refrigerant information. SYSTEM EVACUATION AND Deep Vacuum Method CHARGING The deep vacuum method requires a vacuum pump capable of pulling...
  • Page 13: Operation Modes And Functions

    OPERATION MODES AND FUNCTIONS Abbreviation Display Function Unit Display Functions Table 7 — Unit Element Abbreviations ABBREVIATION ELEMENT Indoor room temperature Evaporator Coil temperature Condenser Coil temperature Outdoor ambient temperature Adjusted setting temperature Compressor discharge temperature Safety Features Fig. 12 — Unit Display Functions Compressor Three-Minute Delay at Restart Compressor functions are delayed for up to ten seconds upon the Table 8 —...
  • Page 14 FAN Mode Indoor Fan Control When the FAN mode is activated: • The outdoor fan and compressor stop. 1. In the COOLING mode, the indoor fan operates continuously. The • Temperature control is disabled and the indoor room temperature fan speed can be set to 1%-100%, or AUTO. is displayed.
  • Page 15 HEATING Mode Compressor control DEFROSTING Mode • The unit enters defrosting mode according to changes in the 1. Reach the configured temperature: temperature value of T3, T4 as well as the compressor running • If the following conditions are satisfied, the compressor ceases time.
  • Page 16 Forced Operation Function Auto-Restart Function • Forced COOLING Mode • The indoor unit has an auto-restart module that allows the unit to The compressor and outdoor fan continues to run and the indoor restart automatically. The module automatically stores the current settings and, in the case of a sudden power failure, will restore fan runs at rated speed.
  • Page 17 Silence Information Inquiry Press SILENCE on the remote controller to enable the SILENCE To enter information inquiry status, complete the following procedure within ten seconds: function. While this function is active, the indoor unit runs at faint breeze (1% fan speed), which reduces noise to the lowest possible •...
  • Page 18 TROUBLESHOOTING Safety WARNING UNIT DAMAGE HAZARD Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before troubleshooting. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) Fig. 13 — Electrolytic Capacitors For other models, please connect discharge resistance (approximately 100Ù 40W) or a soldering iron (plug) between the +, - terminals of the electrolytic capacitor on the other side of the outdoor PCB.
  • Page 19 TROUBLESHOOTING (continued) Error Display (Indoor Unit) When the indoor unit encounters a recognized error, the indicator light flashes in a corresponding series, the timer display may turn on or begin flashing, and an error code displays. These error codes are described in Table 10. Table 10 —...
  • Page 20: Error Diagnosis And Troubleshooting Without Error Code

    ERROR DIAGNOSIS AND TROUBLESHOOTING WITHOUT ERROR CODE WARNING UNIT DAMAGE HAZARD Be sure to turn off unit before any maintenance to prevent damage or injury. Table 11 — Remote Maintenance Remote Electrical Circuit Refrigerant Circuit Others Maintenance The setting The ambient Interference temp is SILENCE...
  • Page 21 ERROR DIAGNOSIS AND TROUBLESHOOTING WITHOUT ERROR CODE (continued) Table 12 — Field Maintenance Field Electrical Circuit Maintenance Faulty Faulty Possible Wrong setting Faulty Shorted or Shorted or Blown fuse Loose Shorted or Safety device thermostat/ Faulty Shorted or magnetic Faulty causes Power failure place of temp...
  • Page 22 ERROR DIAGNOSIS AND TROUBLESHOOTING WITHOUT ERROR CODE (continued) Table 13 — Field Maintenance Field Maintenance Refrigerant Circuit Insufficient Air or non- Expansion Leaking Dirty or Short Broken Power Dirty condensible High temp. Insufficient Expansion valve or power Possible causes Compressor Refrigerant Restricted Refrigerant...
  • Page 23 ERROR DIAGNOSIS AND TROUBLESHOOTING WITHOUT ERROR CODE (continued) Table 14 — Field Maintenance Field Maintenance Others Possible causes Contact of piping with other piping or Heavy load condition Loosen hold down bolts and/or screws Shipping plates remain attached Poor choices of capacity of trouble external plate Unit will not start...
  • Page 24: Quick Maintenance By Error Code

    QUICK MAINTENANCE BY ERROR CODE If you do not have the time to test whether specific parts are faulty, you can directly change the required parts according the error code. You can find the parts to replace by error code in Tables 15 and 16. Table 15 —...
  • Page 25: Troubleshooting By Error Code

    TROUBLESHOOTING BY ERROR CODE Common Check Procedures Temperature Sensor Check Disconnect the temperature sensor from PCB, measure the resistance value with a 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.(Tp) sensor.
  • Page 26 IPM Continuity Check Turn off the power. Allow the large capacity electrolytic capacitors to discharge completely, and dismount the IPM. Use a digital tester to measure the resistance between P and UVWN; UVW and N. Table 18 — IPM Continuity Check Normal Resistance Normal Resistance Digital Tester...
  • Page 27: Diagnosis And Solution

    DIAGNOSIS AND SOLUTION E0/F4/EA (EEPROM Parameter Error) Description: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Recommended parts to prepare: • Indoor PCB • Outdoor PCB • Reactor Troubleshooting and Repair: Shut off the power supply. Wait 2 minutes then turn back on.
  • Page 28 E1 (Indoor and Outdoor Unit Communication Error) Description: The indoor unit has not received feedback from the outdoor unit for 150 seconds, four consecutive times. Recommended parts to prepare: • Indoor PCB • Outdoor PCB • Reactor Troubleshooting and Repair: Power off.
  • Page 29 E1 (Indoor and Outdoor Unit Communication Error) (continued) Remarks: • Use a multimeter to test the DC voltage between the outdoor unit’s 2 port and 3 port. The red pin of multimeter connects with the 2 port while the black pin is for 3 port. •...
  • Page 30 E2 (Zero crossing detection error diagnosis and solution) Description: When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal. Recommended parts to prepare: • Connection wires • PCB Troubleshooting and repair: Check the connections and power supply.
  • Page 31 E3/F5 (Fan speed is operating outside of the Normal Range) Description: When the indoor fan speed maintains a low speed (ex. 300RPM) or a speed that’s too high (ex.1500RPM) for a certain time, the unit stops and the LED displays the failure (E3). When the outdoor fan speed registers below 200RPM or over 1500RPM for an extended period of time, the unit stops and the LED displays the failure (F5).
  • Page 32 Index 1. Indoor or Outdoor DC Fan Motor (control chip is in the fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in the fan motor connector. If the value of the voltage is not in the range shown in Table 19, the PCB must has problems and need to be replaced.
  • Page 33 EF (Occupancy Sensor Module Error Diagnosis and Solution) Description: If the Occupancy Sensor module malfunctions, the LED displays the failure. Recommended parts to prepare: • Occupancy Sensor Troubleshooting and Repair: Power off. Wait 2 minutes then restart. Is the unit still displaying an error code? The unit is operating as designed.
  • Page 34 P1 (Over voltage or too low voltage protection diagnosis and solution) Description: Abnormal increases or decreases in voltage are detected by checking the specified voltage detection circuit. Recommended parts to prepare: • Power supply issues • System leakage or blockage •...
  • Page 35 P2 (High temperature protection of IPM module diagnosis and solution) Description: If the temperature of IPM module is higher than limited value, the LED displays this failure code. Recommended parts to prepare: • Faulty PCB • Connection problems Troubleshooting and Repair: Check the fastening screws on the PCB and IPM radiator.
  • Page 36 P4 (Inverter compressor drive error diagnosis and solution) Description: If the temperature of IPM module is higher than limited value, the LED displays this failure code. Recommended parts to prepare: • Wiring mistake • PM malfunction • Outdoor fan assembly faulty •...
  • Page 37 E4/E5/F1/F2/F3 (Open circuit or short circuit of temperature sensor diagnosis and solution) Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure. Recommended parts to prepare: • Wiring mistake • Faulty sensor •...
  • Page 38 Eb (Communication error between the Indoor PCB and Display Board) Description: Indoor PCB does not receive feedback from the display board. Recommended parts to prepare: • Wiring mistake • PCB faulty • Display board malfunction Troubleshooting and Repair: Power off. Wait 2 minutes then restart.
  • Page 39 F0 (Overload current protection diagnosis and solution) Description: An abnormal current rise is detected by checking the specified current detection circuit. Recommended parts to prepare: • Power supply problems • System blockage • Faulty PCB • Wiring mistake • Compressor malfunction Troubleshooting and Repair: Check the power supply.
  • Page 40 P0 (IPM malfunction or IGBT over-strong current protection diagnosis and solution) Description: When the voltage signal the IPM sends to the compressor drive chip is abnormal, the display LED displays “P0” and the air conditioner turns off. Recommended parts to prepare: •...
  • Page 41: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS Indoor Unit Sizes 09K-12K (Front Panel) l l I 1) Hold the front panel by the tabs on Front Panel both sides and lift it. 2) Push up the bottom of the air filter while pressing the buttom of the unit, and then pull the air filter out (downwards).
  • Page 42 Indoor Unit Sizes 09K-12K (Front Panel) (continued) l l I 3) Open the horizontal louver and push the hook towards the right to open. Horizontal Louver Hook 4) Bend the horizontal louver lightly with both hands to loosen the hooks, then remove the horizontal louver.
  • Page 43 Indoor Unit Sizes 09K-12K (Front Panel) (continued) l l I 5) Remove the screw (1) then remove the electrical cover. 6) Disconnect the two connectors on the display board. 7) Slide the front panel side to side to release each axis. 8) Remove the screw (1) and rotate the display board clockwise.
  • Page 44 Indoor Unit Sizes 09K-12K (Electrical Parts) (Anti-static gloves must be worn) NOTE: Remove the front panel (refer to the front panel removal steps) before disassembling electrical parts. l l I 1) Cut the ribbon with a shear, then pull Ground Screws out the coil temperature sensor (T2).
  • Page 45 Indoor Unit Sizes 09K-12K (Electrical Parts) (Anti-static gloves must be worn) (continued) l l I 5) Disconnect the wires. Next, remove the electronic main box. 6) Pull out the electrical control box along the direction indicated in the image to remove it.
  • Page 46 Indoor Unit Sizes 09K-12K (Evaporator) l l I 1) Disassemble the pipe holder located at the rear of the unit. Pipe Holder 2) Remove the screws (3) on the evaporator located on the fixed plate. Screws 3) Remove the screws (2) on the evaporator located at the base of the bearing side.
  • Page 47 Indoor Unit Sizes 09K-12K (Evaporator) (continued) l l I 4) Remove the screw (1) on the evaporator located at the top of the evaporator. Evaporator 5) Remove the evaporator. SM619PHA-03 Specifications subject to change without notice.
  • Page 48 Indoor Unit Sizes 09K-12K (Fan Motor and Fan) NOTE: Remove the front panel, electrical parts and evaporator (refer to front panel, electrical parts, and evaporator removal steps) before disassembling fan motor and fan. u l l r t s 1) Remove the screws (2) and remove the fixing board of the fan motor.
  • Page 49 Indoor Unit Sizes 09K-12K (Fan Motor and Fan) (continued) l l I 3) Remove the set screw. 4) Pull out the fan motor and fan assembly from the side. Fixing Screw Indoor Unit Sizes 09K-12K (Step Motor) NOTE: Remove the front panel and electrical parts (refer to the front panel, electrical parts removal steps) before disassembling the step motor.
  • Page 50 Indoor Unit Sizes 09K-12K (Occupancy Sensor) NOTE: Remove the front panel and electrical parts (refer to the front panel, electrical parts, evaporator and fan motor and fan removal steps) before disassembling the occupancy sensor. l l I 1) Remove the screw (1), then remove the Occupancy Sensor.
  • Page 51 Indoor Unit Sizes 18K-24K (Front Panel) l l I 1) Hold the front panel by the tabs on Front Panel both sides and lift it. 2) Push up the bottom of the air filter (step 1), then pull it out downwards. SM619PHA-03 Specifications subject to change without notice.
  • Page 52 Indoor Unit Sizes 18K-24K (Front Panel) (continued) l l I 3) Open the horizontal louver and push the hook towards the left to open it. Horizontal Louver Hook 4) Bend the horizontal louver lightly with both hands to loosen the hooks, then remove the horizontal louver.
  • Page 53 Indoor Unit Sizes 18K-24K (Front Panel) (continued) l l I 5) Pry the electrical cover with a screwdriver and rotate it towards the left, then remove it. 6) Disconnect the connector on the display board. SM619PHA-03 Specifications subject to change without notice.
  • Page 54 Indoor Unit Sizes 18K-24K (Front Panel) (continued) l l I 7) Slide the front panel side to side to release each axis. 8) Open the screw cap and then remove the screws (3). Specifications subject to change without notice. SM619PHA-03...
  • Page 55 Indoor Unit Sizes 18K-24K (Front Panel) (continued) l l I 9) Release the hooks by hand. 10) Release the 5 hooks in the back. 11) Pull out the panel frame, while pushing the hook through the clearance between the panel frame and the heat exchanger.
  • Page 56 Indoor Unit Sizes 18K-24K (Front Panel) (continued) l l I 12) Release the 5 hooks of the vertical blades, then pull the vertical blades toward the right and remove them. 13) Remove the display board’s screw (1). 14) Rotate the display board in the direction shown in the picture (on the right).
  • Page 57 Indoor Unit Sizes 18K-24K (Electrical Parts) (Anti-static gloves must be worn) NOTE: Remove the front panel (refer to the front panel removal steps) before disassembling electrical parts. l l I Ground Screws 1) Cut the ribbon with a shear, then pull out the coil temperature sensor (T2).
  • Page 58 Indoor Unit Sizes 18K-24K (Electrical Parts) (Anti-static gloves must be worn) (continued) l l I 4) Remove the fixed devices from the connectors. 5) Disconnect the fan motor connectors, the step motor and the T2 sensor. 6) Open the left side plate of the electronic control box.
  • Page 59 Indoor Unit Sizes 18K-24K (Electrical Parts) (Anti-static gloves must be worn) (continued) l l I 7) Open the two clips on the front of the electric box. 8) Open the upper cover plate of the electronic control box. SM619PHA-03 Specifications subject to change without notice.
  • Page 60 Indoor Unit Sizes 18K-24K (Electrical Parts) (Anti-static gloves must be worn) (continued) l l I 9) Remove the screw (1) and open the 2 clips along the direction indicated in the image on the right side. Display board 10) Pull out the electrical main board along the direction indicated in the image on the right.
  • Page 61 Indoor Unit Sizes 18K-24K (Evaporator) l l I 1) Disassemble the pipe holder located at the rear of the unit. 2) Remove the screw (1) on the evaporator located at the fixed plate. SM619PHA-03 Specifications subject to change without notice.
  • Page 62 Indoor Unit Sizes 18K-24K (Evaporator) (continued) l l I 3) Release the hook on the evaporator. 4) Remove the screw (1) on the evaporator located at the fixed plate. 5) Remove the evaporator. Specifications subject to change without notice. SM619PHA-03...
  • Page 63 Indoor Unit Sizes 18K-24K (Fan Motor and Fan) NOTE: Remove the front panel, electrical parts and evaporator (refer to front panel, electrical parts, and evaporator removal steps) before disassembling fan motor and fan. u l l r t s 1) Remove the screws (2) and remove the fixing board of the fan motor.
  • Page 64 Indoor Unit Sizes 18K-24K (Fan Motor and Fan) (continued) l l I 3) Remove the set screw. 4) Pull out the fan motor and fan assembly from the side. Fixing Screw Indoor Unit Sizes 18K-24K (Step Motor) NOTE: Remove the front panel and electrical parts (refer to the front panel, electrical parts removal steps) before disassembling the step motor.
  • Page 65: Appendices

    APPENDICES Appendix 1 Table 20 — Temperature Sensor Resistance Value Table for T1, T2, T3, T4 (C--K) K OHM K OHM K OHM ° F K OHM °C °F °C °F °C °F °C 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517...
  • Page 66 Appendix 2 Table 21 — Temperature Sensor Resistance Value Table for TP (T5) ° C ° F K OHM ° C ° F K OHM ° C ° F K OHM ° C ° F K OHM 542.7 68.66 13.59 3.702 511.9 65.62...
  • Page 67 Appendix 3 Table 22 — Celsius to Fahrenheit ° C ° F ° C ° F ° C ° F ° C ° F ° C ° F 69.8 123.8 179.6 235.4 24.8 71.6 125.6 181.4 237.2 26.6 73.4 127.4 183.2 28.4 75.2...
  • Page 68  SM619PHA-03 2019 Bryant Heating & Cooling Systems D3300 Riverwood Parkway Atlanta GA, 30339 Edition Date: 04/19 Catalog No. SM619PHA-02 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

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