Bryant 619AHBQ12XA3 - 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

Summary

INTRODUCTION AND SAFETY

Safety Information

Key safety symbols, signal words (DANGER, WARNING, CAUTION), and their meanings.

SYSTEM EVACUATION AND CHARGING

Vacuum Pump Evacuation Procedure

Procedures for evacuating the system using a vacuum pump.

Deep Vacuum and Triple Evacuation Methods

Methods for achieving deep vacuum and triple evacuation for system purging.

TROUBLESHOOTING SAFETY AND PROCEDURES

Safety Precautions for Troubleshooting

INDOOR UNIT DIAGNOSTIC GUIDE

Indoor Unit Error Display Codes

DIAGNOSIS AND SOLUTION: EEPROM ERRORS

EEPROM Parameter Error (E0;F4)

Diagnosis and solution for EEPROM parameter errors, including causes and troubleshooting steps.

DIAGNOSIS AND SOLUTION: COMMUNICATION

Communication Error (E1)

Troubleshooting for communication failure between indoor and outdoor units.

DIAGNOSIS AND SOLUTION: TESTING

DC Voltage and Reactor Testing

DIAGNOSIS AND SOLUTION: ZERO CROSSING

Zero Crossing Detection Error (E2)

Diagnosis and solution for errors related to zero crossing signal detection.

DIAGNOSIS AND SOLUTION: FAN SPEED

Fan Speed Out of Control (E3;F5)

Troubleshooting steps for fan speed control malfunctions.

DIAGNOSIS AND SOLUTION: FAN MOTORS

DC and AC Fan Motor Diagnosis

DIAGNOSIS AND SOLUTION: SENSORS

Temperature Sensor Circuit Errors (E4;E5;F1;F2;F3)

Troubleshooting for open or short circuits in temperature sensors.

DIAGNOSIS AND SOLUTION: REFRIGERANT LEAKAGE

Refrigerant Leakage Detection (EC)

Diagnosis and solution for refrigerant leakage detection errors.

DIAGNOSIS AND SOLUTION: OVERLOAD PROTECTION

Overload Current Protection (F0)

Troubleshooting steps for overload current protection faults.

DIAGNOSIS AND SOLUTION: IPM;IGBT ERRORS

IPM Malfunction; IGBT Over-current (P0)

Diagnosis and solution for IPM or IGBT over-strong current protection.

DIAGNOSIS AND SOLUTION: PCB TESTING

PCB Testing Points P-U and P-V

PCB Testing Points P-W and N-U

PCB Testing Points N-V and N-W

DIAGNOSIS AND SOLUTION: VOLTAGE PROTECTION

Over;Under Voltage Protection (P1)

Troubleshooting for over or low voltage protection issues.

DIAGNOSIS AND SOLUTION: COMPRESSOR TEMPERATURE

High Temperature Compressor Protection (P2)

Diagnosis and solution for compressor high temperature protection.

DIAGNOSIS AND SOLUTION: INVERTER DRIVE

Inverter Compressor Drive Error (P4)

Troubleshooting for inverter compressor drive detection errors.

DISASSEMBLY INSTRUCTIONS

Front Panel Disassembly

Front Panel Disassembly Continuation

Front Panel Disassembly Completion

Display Board Removal

Electrical Box Disassembly

Electrical Box and Main Control Board Removal

Electrical Box Subassembly Removal

Evaporator Disassembly

Removing panel frame assembly and pipe clamp board for evaporator access.

Evaporator Removal

Removing screws and separating the evaporator from the chassis.

Fan Motor and Fan Assembly: Initial Removal

Removing stop blocks, chassis assembly, and fan motor board.

Fan Motor and Fan Assembly: Final Removal

Removing bearing sleeve, screw, and pulling out the fan motor assembly.

Bryant 619AHBQ12XA3 Specifications

General

Model	619AHBQ12XA3
Type	Air Conditioner
SEER Rating	Up to 19
Refrigerant	R-410A
Phase	1
Voltage	208/230
Compressor Type	Inverter
Stages	Variable
Cooling Capacity	12, 000 BTU/h