Bryant 619AHB Series User Manual

Specifications subject to change without notice.
TABLE of CONTENTS
PAGE
INTRODUCTION............................................................................ 1
MODEL / SERIAL NUMBER NOMENCLATURES .................... 2
SPECIFICATIONS .......................................................................... 3
COMPATIBILITY........................................................................... 3
DIMENSIONS ................................................................................. 4
CLEARANCES................................................................................ 4
ELECTRICAL DATA ..................................................................... 5
WIRING........................................................................................... 5
CONNECTION DIAGRAMS ......................................................... 6
WIRING DIAGRAM....................................................................... 7
REFRIGERATION CYCLE DIAGRAM........................................ 8
REFRIGERANT LINES .................................................................. 8
FAN AND MOTOR SPECIFICATIONS........................................ 9
SYSTEM EVACUATION AND CHARGING ............................... 10
TROUBLESHOOTING................................................................... 15
INDOOR UNIT DIAGNOSTIC GUIDE......................................... 16
DIAGNOSIS AND SOLUTION...................................................... 17
APPENDICIES ................................................................................ 34
DISASSEMBLY INSTRUCTIONS ................................................ 37
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 coil cleaning. All other operations
should be performed by trained service personnel.
When working on the equipment, observe 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 warnings or cautions
included in the 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.
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 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 619AHB family of heat pumps. This manual
has an appendix (see “APPENDICIES” on page 34) with data
required to perform troubleshooting. Use the “TABLE of
CONTENTS”on page 1 to locate a desired topic.
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 (es) with a suitable warning label.
WAR N I N G
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.
WAR N I N G
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 a system shutdown. This causes
refrigerant slugging and could possibly damage the
compressor at start-up.
CAUTION
Service Manual
619AHB
High Wall Ductless System
Sizes 06 to 36

Bryant 619AHB Series Specifications

General

Energy Star	Yes
SmartSense Technology	No
Cooling Capacity	2-5 tons
Warranty	10 Years Limited Parts Warranty
Refrigerant	R-410A

Summary

Introduction

Model and Serial Number Nomenclature

Specifications

Specifications Details

Lists electrical, piping, and indoor unit specifications including dimensions and airflow.

Compatibility

Unit Compatibility Details

Details compatibility between indoor and outdoor units for single and multi-zone configurations.

Dimensions and Clearances

Indoor Unit Dimensions

Lists physical dimensions and net weight for various unit sizes.

Installation Clearances

Specifies required minimum clearances around the indoor unit for proper operation.

Electrical Data and Wiring

Electrical Data for Indoor Fan

Provides FLA, HP, and fuse/breaker amp ratings for indoor fan motors by unit size.

Wiring Instructions

Details power supply, wiring methods, and communication wiring between indoor and outdoor units.

Connection Diagrams

Power Supply Connection Diagrams

Illustrates wiring connections for 115V and 208/230V systems between indoor and outdoor units.

Wiring Diagram Details

Indoor Unit Wiring Diagram Components

Details the internal wiring connections for the indoor unit, including component labels and connectors.

Refrigeration Cycle and Lines

Refrigeration Cycle Diagram

Illustrates the flow of refrigerant through the indoor and outdoor components of the system.

Refrigerant Lines Importance

Emphasizes the importance of insulating refrigerant lines and refers to pipe sizes for indoor units.

Fan and Motor Specifications

High Wall Fan Motor Specifications

Provides detailed specifications for high wall fan motors, including material, dimensions, voltage, and performance data.

System Evacuation and Charging

Vacuum Pump Procedures and Tubing Check

Guides on vacuum pump procedures, including deep/triple evacuation and final tubing checks.

Protection Mechanisms and Operation Modes

System Protection and Cooling Mode

Covers system protection features and cooling mode fan operation rules.

Heating, Auto, and Drying Modes

Mode Operations and Protections

Explains heating, auto, and drying modes, including fan rules and protections.

Advanced Functions and Controls

Forced Operation, Auto-Restart, and Detection

Details forced operation, auto-restart, refrigerant leakage, and other advanced functions.

Troubleshooting Guide

Safety and General Troubleshooting

Highlights critical safety precautions for troubleshooting, especially capacitor discharge.

Error Code and Component Diagnostics

Covers error code diagnostics and troubleshooting for various component failures like EEPROM, communication, fan, sensor, and electrical issues.

Component Failure Troubleshooting

Details diagnosis and solutions for overload current, IPM, voltage, compressor temperature, and inverter drive errors.

Main Parts Check

Temperature Sensor Resistance Check

Details how to disconnect and measure the resistance of temperature sensors using a tester.

Appendices

Temperature Sensor Resistance Values

Provides resistance values for temperature sensors (T1, T2, T3, T4) across various temperature scales.

Temperature Sensor Values (T5)

T5 (TP) Sensor Resistance Data

Lists resistance values for the T5 (TP) temperature sensor across different temperature scales.

IPM Continuity Check

IPM Continuity Testing Procedure

Describes how to check the continuity of the IPM using a digital tester and resistance values.

Disassembly Instructions

Front Panel Disassembly

Provides step-by-step instructions for removing the front panel of the indoor unit.

Panel and Electrical Box Disassembly

Panel Frame and Electrical Components Removal

Details steps for removing panel frame assembly, display board, and electrical components.

Control Box and Main Board Removal

Explains how to remove the electronic control box and the main control board from the unit.

Evaporator Disassembly

Evaporator Panel and Removal Procedures

Details steps for removing the evaporator panel frame and the evaporator assembly.

Fan Motor and Fan Disassembly

Fan Motor and Fan Assembly Removal

Guides on removing the fan motor board, bearing sleeve, and the fan motor and fan assembly.