Bryant 189BNV EVOLUTION User Manual

288BNV EVOLUTION
R
V VARIABLE SPEED HEAT PUM P
189BNV EVOLUTION
R
V VARIABLE SPEED AIR CONDITIONER
WITH PURONr REFRIGERANT
Service Manual
TABLE OF CONTENTS
PAGE
UNIT IDENTIFICATION 2.................................................................................
REFRIGERANT PIPING LENGTH LIMITATIONS 3...........................................................
LONG LINE APPLICATIONS 3.............................................................................
SAFETY CONSIDERATIONS 4.............................................................................
GENERAL INFORMATION 4..............................................................................
ELECTRICAL 5..........................................................................................
MAJOR COMPONENTS 5--7...............................................................................
AOC Bo ard 5..........................................................................................
Inverter 5..............................................................................................
Variable Speed Compressor 5..............................................................................
Electronic Expansion Valve (EXP) 6.........................................................................
Outdoor Fan Motor 6.....................................................................................
Pressure Transducer (SPT) 6...............................................................................
Pressure Equalizer Valve (PEV) 6...........................................................................
Outdoor Coil Thermistor (OCT) 6...........................................................................
Suction Thermistor (OST) 7...............................................................................
Discharge Thermistor (ODT) 7.............................................................................
Crankcase Heater 7......................................................................................
Time--Delays 7.........................................................................................
COMMUNICATION AND STATUS FUNCTION LIGHTS 7.....................................................
CHECK CHARGE 9.......................................................................................
TROUBLESHOOTING 9--13................................................................................
Service Tool 14-- 31......................................................................................
System Communication Failure 14..........................................................................
Model Plug 14..........................................................................................
Status Codes 14.........................................................................................
Variable Speed Compressor Winding Resistance 14.............................................................
Fan Motor 15...........................................................................................
Control Fault 15........................................................................................
Brown Out Protection 15..................................................................................
230v Line (Power Disconnect) Detection 15...................................................................
Pressure Switch Protection 15..............................................................................
Suction Pressure Transducer (SPT) 15........................................................................
Temperature Thermistors 16...............................................................................
Fault Code Action Table 18................................................................................
Variable Speed Drive LED Location and Description 25..........................................................
Compressor Power Harness Assembly Replacement 26..........................................................
Inverter Assembly with Shield Gasket Installation 28............................................................
Compressor Replacement 31...............................................................................
WIRING DIAGRAMS 34-- 35.................................................................................
REFRIGERATION SYSTEM 36-- 40..........................................................................
Refrigerant 36..........................................................................................
Compressor Oil 36.......................................................................................
Servicing Systems on Roofs With Synthetic Materials 36.........................................................
Brazing 36.............................................................................................
Service Valves and Pump down 36..........................................................................
Liquid Line Filter Drier 39................................................................................
Suction Line Filter Drier 39................................................................................
Thermostatic Expansion Valve (TXV) 39.....................................................................
Accumulator 40.........................................................................................
REFRIGERATION SYSTEM REPAIR 40.....................................................................

Bryant 189BNV EVOLUTION Specifications

General

Cooling Stages	Variable
Refrigerant	R-410A
ENERGY STAR® certified	Yes
Voltage	208/230V
Stages	Variable
Warranty	10-year parts limited warranty upon registration

Summary

UNIT IDENTIFICATION

SAFETY CONSIDERATIONS

General Safety Precautions

Covers electrical hazards, cut hazards, and general safe handling practices for the unit.

ELECTRICAL SYSTEM

Major Components Overview

Introduces key components like AOC board, inverter, compressor, EXV, and sensors.

COMMUNICATION AND STATUS LIGHTS

Defrost Interval Settings

CHECK CHARGE

Charging Procedure (Communicating Systems)

Charging Procedure (Non-Communicating Systems)

TROUBLESHOOTING

Diagnostic Tools and Communication

Covers the use of the service tool, system communication failures, and model plug identification.

Component Diagnostics and Protection

Details checks for compressor resistance, fan motor, control faults, pressure switches, transducers, and thermistors.

Thermistor Operation and Inverter Protection

Fault Code Reference and Resolution

Explains how to interpret status codes and provides actions for various fault codes.

COMPRESSOR REPLACEMENT

Failure Classification and Mechanical Replacement

Classifies compressor failures and details the procedure for mechanical replacement.

Compressor Replacement Steps (Continued)

Continues the detailed steps for replacing the compressor, including handling and connections.

Electrical Burnout System Cleanup

Provides steps for cleaning the system after an electrical burnout, including filter drier replacement.

WIRING DIAGRAMS – 189BNV

189BNV Wiring Diagrams (Sizes 13-24B)

189BNV Wiring Diagrams (Sizes 25-60)

WIRING DIAGRAMS – 288BNV

288BNV Wiring Diagrams (Sizes 13-24B)

288BNV Wiring Diagrams (Sizes 25-60)

REFRIGERATION SYSTEM

Refrigerant and Compressor Oil

Discusses Puron refrigerant properties and the characteristics of POE compressor oil.

Service Valves and Pumpdown Overview

Explains the function of service valves and introduces the concept of pumpdown procedures.

EVACUATION AND REFRIGERANT RECOVERY

Pumpdown Procedures (Communicating Systems)

Details pumpdown steps for units using Evolution controls (288BNV and 189BNV).

Pumpdown Procedures (Non-Communicating Systems)

Outlines pumpdown steps for units controlled by standard thermostats.

Refrigerant Recovery Methods

Explains recovery procedures for 288BNV and 189BNV systems, including EXV use.

Reversing Valve Functionality

REFRIGERATION SYSTEM REPAIR

Leak Detection Methods

Describes methods for detecting refrigerant leaks using electronic detectors and soap bubbles.