Bryant 189BNV EVOLUTION Service Manual
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Bryant 189BNV EVOLUTION Service Manual

V variable speed air conditioner/v variable speed heat pump
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288BNV EVOLUTION
189BNV EVOLUTION
WITH PURONr REFRIGERANT
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R
V VARIABLE SPEED HEAT PUMP
R
V VARIABLE SPEED AIR CONDITIONER
Service Manual

TABLE OF CONTENTS

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Summary of Contents for Bryant 189BNV EVOLUTION

  • Page 1: Table Of Contents

    288BNV EVOLUTION V VARIABLE SPEED HEAT PUMP 189BNV EVOLUTION V VARIABLE SPEED AIR CONDITIONER WITH PURONr REFRIGERANT Service Manual TABLE OF CONTENTS PAGE UNIT IDENTIFICATION .................

  • Page 2: Unit Identification

    UNIT IDENTIFICATION The unit is identified using a 16 digit model number structure. It is recommended providing the complete 16 digit model number when ordering replacement parts to insure receiving the correct parts. MODEL NUMBER NOMENCLATURE - - HEAT PUMP Product Tier SEER...

  • Page 3: Refrigerant Piping Length Limitations

    REFRIGERANT PIPING LENGTH LIMITATIONS Maximum Line Lengths: The maximum allowable total equivalent length varies depending on the vertical separation. See the tables below for allowable lengths depending on whether the outdoor unit is on the same level, above or below the outdoor unit. Maximum Line Lengths MAXIMUM ACTUAL LENGTH MAXIMUM EQUIVALENT LENGTH{...

  • Page 4: Safety Considerations

    SAFETY CONSIDERATIONS Installation, service, and repair of these units should be attempted CAUTION only by trained service technicians familiar with standard service instruction and training material. CUT HAZARD All equipment should be installed in accordance with accepted practices and unit Installation Instructions, and in compliance with Failure to follow this caution may result in personal injury.

  • Page 5: Electrical

    ELECTRICAL MAJOR COMPONENTS Application Operational Control Board (AOC) WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Exercise extreme caution when working on any electrical components. Shut off all power to system prior to troubleshooting.

  • Page 6: Electronic Expansion Valve (Exp)

    CAUTION EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage and/or improper operation. Do not attempt to apply line voltage directly to the compressor. This will destroy the compressor. Electronic Expansion Valve (EXV) This unit uses an electronic expansion valve for refrigerant metering in the heating mode.

  • Page 7: Suction Thermistor (Ost)

    Suction Thermistor (OST) Crankcase Heater Operation Suction Thermistor is used for assisting in EXV control and must This unit has an internal crankcase heater that will be energized be secured on the suction tube and aligned longitudinally to the during the off cycle and is intelligently demanded by the system to vertical surface of the tube axis (see Fig.

  • Page 8: Communication And Status Function Lights

    COMMUNICATION AND STATUS FUNCTION LIGHTS Evolution Connex Control, Green Communications (COMM) When defrost time <5 minutes, the next defrost interval=90 minutes. (outdoor temperature above 37_F) Light When defrost time 5- -7 minutes, the next defrost interval=60 A green LED (COMM light) on the outdoor board (see Fig. 7 and minutes.

  • Page 9: Check Charge

    CHECK CHARGE Charge in CHARGING mode (communicating only) Unit is factory charged for 15ft (4.57 m) of lineset. If any refrigerant charge adjustment is required due to the user inputted line set length, the UI will calculate and display the target subcooling and the amount of additional charge to be added.
  • Page 10 Table 1—Required Charge Adjustment for Indoor Coil Model - - HP Outdoor Model Size Furnace or Fan Coil Model Number CNPV*18** CAP**18** CNP**24 CNPV*19** CAP**24 CSPH*24 CSPH*30** F(E,V)4(A,B,C)NF002 +0.19 CAP**30 CNP**30 CNP**36 F(E,V)4(A,B,C)N(B,F)003 CAP**36 CNP**42 +.50 +.75 CAP**42 +.50 +.75 CSPH*36 +.75 CSPH*42**...
  • Page 11 Fig. 12 – Charging in Cooling Mode 288BNV013 Fig. 16 – Charging in Cooling Mode 288BNV037 Fig. 17 – Charging in Cooling Mode 288BNV048 Fig. 13 – Charging in Cooling Mode 288BNV024 Fig. 18 – Charging in Cooling Mode 288BNV060 Fig.
  • Page 12 Fig. 19 – Charging in Cooling Mode 189BNV013 Fig. 23 – Charging in Cooling Mode 189BNV037 Fig. 20 – Charging in Cooling Mode 189BNV024B Fig. 24 – Charging in Cooling Mode 189BNV048 Fig. 21 – Charging in Cooling Mode 189BNV025 Fig.
  • Page 13 Heating Check Chart Procedure (See Fig.27 - - 33) (Communicating / Non- - communicating Systems) In heating mode, the required charging method is by weigh- -in. On new installations or complete recharge, refer to the unit 0 and indoor fan coil / furnace coil per Table 1 for additional charge needed.

  • Page 14: Troubleshooting

    TROUBLESHOOTING Table 3—Factory Supplied Model Plug Information Service Tool MODEL PLUG 288BNV Pins 1--- 4 Pins 2--- 3 NUMBER HK70EZ029 220K HK70EZ009 5.1K HK70EZ001 5.1K HK70EZ002 5.1K HK70EZ026 120K HK70EZ003 5.1K HK70EZ004 5.1K MODEL PLUG 189BNV Pins 1--- 4 Pins 2--- 3 NUMBER HK70EZ028 180K...

  • Page 15: Fan Motor

    High Pressure Switch Protection as long as none of it has been removed during the cap removal. The outdoor unit is equipped with a high pressure switch. If the 8. Reinstall compressor sound blanket making sure discharge control senses the opening of a high pressure switch (open 600+/- -5 thermistor and compressor power harness are routed as they psig, close 470+/- -10 psig @77_F), it will respond as follows: were from the factory...

  • Page 16: Temperature Thermistors

    Check to ensure thermistors are mounted properly (See Fig. 2, 3, 4, 5 and 6). Thermistor Sensor Comparison The control continuously monitors and compares the outdoor air temperature sensor and outdoor coil temperature sensor to ensure proper operating conditions. The comparison is: In cooling if the outdoor air sensor indicates ...
  • Page 17 Fig. 38 – Fault Code Label...

  • Page 18: Fault Code Action Table

    Table 6—Fault Code Actions Flash Reset Type Amber LED Description Mode Possible Causes Actions Code Time ON, no flash Standby 1, pause Variable Capacity 1 (2 sec ON), longer pause Variable Capacity (1 second OFF) (Range Cutback) Wrong Model Plug In- Verify correct model plug installed stalled Check model plug for corrosion or breakage;...
  • Page 19 Flash Reset Type Amber LED Description Mode Possible Causes Actions Code Time Sensor Harness not connected to AOC Ensure plug is connected to AOC control control Broken or loose Check harness for continuity; see resistance harness wire chart to check resistance at given temperature Coil Thermistor not Ensure Sensor is properly clipped to the dis- Fault...
  • Page 20 Flash Reset Type Amber LED Description Mode Possible Causes Actions Code Time SUCTION OVER TEMPERA- TURE EVENT Local 15 Minutes Both See fault 82 Same actions for 82 (elevates to fault code 82 after 3 occurrences) Sensor Harness not connected to AOC Ensure plug is connected to AOC control control Broken or loose...
  • Page 21 Flash Reset Type Amber LED Description Mode Possible Causes Actions Code Time Cooling in Low Ambient region (55 °F and be- Enable "Low Ambient Cooling" via user inter- Cool low) with "Low Ambient face Cooling Control" dis- abled Outside Normal Operat- ing Range (e.g.
  • Page 22 Flash Reset Type Amber LED Description Mode Possible Causes Actions Code Time Outside Normal Operat- ing Range (e.g. improp- er load calculation, sys- Both Consult Application Guidelines tem match issue, out- side cooling range, out- side heating range etc.) Service Valve left Both Ensure Service Valves are open closed (Liquid or Vapor)
  • Page 23 Flash Reset Type Amber LED Description Mode Possible Causes Actions Code Time Blocked Inverter Heat Check Inverter fins for debris and clean if nec- Exchanger (fins) essary Check Condenser (IDU in heating, ODU in Condenser Airflow too cooling) for clogging (ice or debris) and clean if necessary;...
  • Page 24 Variable Speed Drive LED Location and Description (Sizes 13 and 24B) LED 200 LED 207 STATUS COMM MOC LED Description (Sizes 13 and 24B) Reference Color Status Condition Description Steady Normal Indicates MOC powered where DC bus at 40volts or higher LED200 Abnormal No power, capacitor voltage drained...

  • Page 25: Variable Speed Drive Led Location And Description

    Variable Speed Drive LED Location and Description (Sizes 25, 36, 37, 48, 49 and 60) MOC LED Description (Sizes 25, 36, 37, 48, 49 AND 60) Reference Color Status Description Steady On MOC powered where DC bus is 40volts or greater No power, capacitor voltage drained Steady On DCF and board DC high voltage and discharge circuit powered on...

  • Page 26: Compressor Power Harness Assembly Replacement

    COMPRESSOR POWER HARNESS ASSEMBLY REPLACEMENT (Reference RCD Instruction # 99TA516170) The following is a recommended procedure for compressor power harness replacement. Always refer to the unit product installation, start- -up & service instructions for detailed procedures. WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death.
  • Page 27 9. With using a slot screwdriver, lift up the on the side tab to 12. Remove cover, unplug old harness, plug in new harness, pry the cover off from the RTV. Be sure not to break the tab. verify bushing is reinstalled and plug leads leave the terminal box through the bushing;...

  • Page 28: Inverter Assembly With Shield Gasket Installation

    INVERTER ASSEMBLY w SHIELD GASKET REMOVAL AND INSTALLATION (Reference RCD Instruction # 99TA512018) Also see figures 40 through 41 6. After verifying the voltage has dissipated to zero, WARNING disconnect wiring from the inverter. 7. Disconnect three compressor power wires. Note wire color order –...
  • Page 29 Fan Motor Harness Plug Compressor Power Harness Wires Yel, Red, Fig. 39 – Compressor and Fan Harness (Unit sizes 13 and 24B) Fig. 40 – Compressor and Fan Harness (Unit sizes 25, 36, 37, 48, 49 and 60)
  • Page 30 Reversing Valve PLUG EXV PLUG Discharge Inverter Ground Thermistor Wire, GRN / YEL PLUG Stripes High Pressure Inverter Input Switch PLUG Power Wires BLK and YEL OAT/OCT PLUG Suction Suction Suction Thermistor Thermis Pressure PLUG PLUG Transducer ABCD PLUG PLUG Fig.

  • Page 31: Compressor Replacement

    COMPRESSOR REPLACEMENT (Reference RCD Instruction # 99TA516169) The following is a recommended procedure for compressor CAUTION replacement. Always refer to the unit product installation, start- -up & service instructions for detailed procedures. UNIT DAMAGE HAZARD WARNING Failure to follow this caution may result in equipment damage or improper operation.
  • Page 32 7. Cut the wire tires securing the compressor power harness to 10. Remove compressor mounting hardware. the control box. Remove compressor power harness (from 11. Cut both suction and discharge lines with tubing cutter. Do control box). Replace wire tie with one supplied; do not not use brazing torch for compressor removal as oil vapor fasten at this time.
  • Page 33 20. Reinstall service panel. Severe Burnout 21. Route compressor harness choke to left hand side of the top Perform steps 1 – 22 as specified in the Replacement Procedure for of control box and push in wire tie. Pull wires tight as they Mechanical Failure and then perform steps as follows: enter control box and tighten second wire tie.

  • Page 34: Wiring Diagrams

    WIRING DIAGRAMS - - 189BNV Fig. 43 – 189BNV WIRING DIAGRAM - - Sizes 13 and 24B CONNECTION DIAGRAM UNIT OPERATION This control board contains a 3.5 minute short cycle protector. A 3.5 minute delay will occur between COMP Compressor off/on cycles. To bypass delay, short forced defrost pins for 1 second then release. However, there is an additional 2.5 minutes delay upon expiration of the 3.5 minute short cycle delay to ensure the high and low side pressures are equalized.
  • Page 35 WIRING DIAGRAMS - - 288BNV Fig. 45 – 288BNV WIRING DIAGRAM - - Sizes 13 and 24B Fig. 46 – 288BNV WIRING DIAGRAM - - Sizes 25, 36, 37, 48, and 60...

  • Page 36: Refrigeration System

    REFRIGERATION SYSTEM Refrigerant 4. Perform required service. 5. Remove and dispose of any oil contaminated material per WARNING local codes. Brazing UNIT OPERATION AND SAFETY HAZARD This section on brazing is not intended to teach a technician how to braze. There are books and classes which teach and refine brazing Failure to follow this warning could result in personal injury techniques.
  • Page 37 Pump Down - - Evolution Communicating - - 189BNV The service valve- -stem cap is tightened to 20  2 ft/lb torque and the service- -port caps to 9  2 ft/lb torque. The seating surface of Because this system is inverter controlled, compressor, suction the valve stem has a knife- -set edge against which the caps are pressure transducer, conventional procedure cannot be used to tightened to attain a metal- -to- -metal seal.
  • Page 38 Evacuation and recovery of refrigerant from 189BNV 3. Close the liquid service valve. 4. The unit will continue to run until high or low pressure 1. Connect gauges to 189BNV liquid and vapor service valve switches open. Close vapor service valve once compressor ports to monitor operating pressures during and at comple- shuts down.

  • Page 39: Liquid Line Filter Drier

    CAUTION FROM INDOOR COIL VIA SERVICE VALVE ON TO OUTDOOR UNIT DAMAGE HAZARD COIL OUTDOOR COIL Failure to follow this caution may result in equipment damage ACCUMULATOR or improper operation. To avoid filter drier damage while brazing, filter drier must be TP- -4 TP- -3 TP- -2...

  • Page 40: Accumulator

    Accumulator WARNING The accumulator is specifically designed to operate with Puronr or R22 respectfully; use only factory- -authorized components. ELECTRICAL SHOCK HAZARD Under some light load conditions on indoor coils, liquid refrigerant is present in suction gas returning to compressor. The accumulator Failure to follow this warning could result in personal stores liquid and allows it to boil off into a vapor so it can be safely injury or death.

  • Page 41: Coil Removal

    Coil Removal Coils are easy to remove if required for compressor removal, or to replace coil. 1. Shut off all power to unit. 2. Recover refrigerant from system through service valves. 3. Break vacuum with nitrogen. LEAK DETECTOR 4. Remove top cover. SOLUTION 5.
  • Page 42 Catalog No. SM288BNV ---189BNV ---03 E 2016 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 Edition Date: 03/16 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

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