Bryant 38MPRAQ09AA3 - User Manual

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619PHA

High Wall Ductless System

Sizes 09 to 12

Service Manual

TABLE OF CONTENTS

PAGE

SAFETY CONSIDERATIONS 1.........................

INTRODUCTION 1...................................

MODEL/SERIAL NUMBER NOMENCLATURES 2.........

SPECIFICATIONS 3...................................

COMPATIBILITY 3...................................

DIMENSIONS 4.....................................

CLEARANCES 5.....................................

ELECTRICAL DATA 6................................

WIRING 6...........................................

CONNECTION DIAGRAM 6...........................

WIRING DIAGRAM 7.................................

FAN AND MOTOR SPECIFICATIONS 7..................

REFRIGERATION CYCLE DIAGRAM 8..................

REFRIGERANT LINES 9..............................

SYSTEM EVACUATION AND CHARGING 9..............

OPERATION MODES AND FUNCTIONS 10..............

TROUBLESHOOTING 15..............................

ERROR DIAGNOSIS AND TROUBLESHOOTING 17.......

QUICK MAINTENANCE BY ERROR CODE 21............

TROUBLESHOOTING BY ERROR CODE 22..............

DIAGNOSIS AND SOLUTION 23.......................

DISASSEMBLY INSTRUCTIONS 36.....................

APPENDICES 46.....................................

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 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

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 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.

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal

injury or death.

Before installing, modifying, or servicing system, 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.

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.

WARNING

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.

INTRODUCTION

This service manual provides the necessary information to service,

repair, and maintain the indoor units. Section 2 of this manual has an

appendix with data required to perform troubleshooting. Use the Table

of Contents to locate a desired topic.

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This document describes the 619PHA High Wall Ductless System, covering its functions, technical specifications, usage, and maintenance.

Function Description

The 619PHA is a ductless heat pump system designed for heating and cooling. It features an indoor unit (fan coil) and an outdoor unit, with communication and power supplied between them. The system incorporates various control modes, including COOLING, HEATING, AUTO, FAN-ONLY, and DRY modes, to maintain desired indoor temperatures. It also includes functions like Auto-Restart, ECO mode for energy efficiency, Self Clean to prevent mold growth, Silence mode for quiet operation, and an Intelligent Eye sensor for human movement detection to optimize energy usage.

Important Technical Specifications

The system is available in 9K (3/4 Ton) and 12K (1 Ton) capacities.

Voltage, Phase, Cycle: 208/230V, 1-phase, 60Hz.
Power Supply: Indoor unit powered from the outdoor unit.
MCA (Minimum Circuit Amps): 0.2A for both 9K and 12K models.
Controls: Standard wireless remote controller (°F/°C convertible), optional wired remote controller.
Operating Range:
- Cooling Indoor DB Min – Max: 63~86°F (17~30°C)
- Heating Indoor DB Min – Max: 32~86°F (0~30°C)
Piping:
- Liquid Line: 1/4 inch (6.35 mm) for both models.
- Suction Line: 3/8 inch (9.52 mm) for 9K, 1/2 inch (12.7 mm) for 12K.
Indoor Coil:
- Face Area: 2.2 sq. ft.
- No. Rows: 4
- Fins per inch: 21
- Circuits: 5
Indoor Unit Dimensions (W x H x D): 35.2 x 11.7 x 9.8 inches (895 x 298 x 248 mm) for both models.
Net Weight: 29 lbs (13 kg) for both models.
Fan Speeds: 4 settings.
Airflow (lowest to highest):
- 9K: 144/245/295/345 CFM
- 12K: 168/252/306/357 CFM
Sound Pressure (lowest to highest):
- 9K: 29/46 dB(A)
- 12K: 31/47 dB(A)
Air Throw Data:
- 9K: 22 ft (6.7 m)
- 12K: 23 ft (7 m)
High Wall Fan Motor: DC type, 0.027 HP, 50W input, 20W output. Rated RPM 1000 for 9K, 1050 for 12K.
Clearances: Minimum 5.9 inches (15 cm) from the ceiling for proper return airflow.

Usage Features

Control Modes:
- COOLING Mode: Indoor fan operates continuously. Fan speed can be set from 1% to 100% or AUTO. Compressor control is based on reaching the configured temperature, with protective times and temperature differentials.
- HEATING Mode: Indoor fan operates continuously (1% to 100% or muted). Compressor control is similar to cooling, with specific temperature differentials (e.g., Tsc+HDIFTEMP2).
- AUTO Mode: Selects COOLING, HEATING, AUTO-DRYING, or FAN-ONLY based on T1, Ts, T4, and relative humidity. Setting temperature can be changed between 60-86°F (16-30°C).
- DRY Mode: Operates like AUTO fan in COOLING mode, with mute function active and all protections enabled.
- FAN Mode: Outdoor fan and compressor stop. Temperature control is disabled, and indoor room temperature is displayed. Indoor fan speed can be set 1-100% or AUTO.
Forced Operation Function: Allows the unit to run in COOLING or AUTO mode at a preset temperature (75°F/24°C) for a specified duration, useful for testing or quick cooling/heating.
Timer Function: Allows scheduling of unit turn-on/off times within a 24-hour range.
SLEEP Function: Available in COOLING, HEATING, or AUTO modes, it adjusts temperature and fan speed over time to optimize comfort and energy savings during sleep.
Auto-Restart Function: Automatically restores previous settings after a power failure, with a 3-minute delay for compressor restart.
46°F (8°C) Heating: Prevents indoor areas from freezing during severe cold weather when unoccupied.
ECO Function: Energy-efficient mode that adjusts temperature and fan speed to save energy. Operates for 8 hours.
Self Clean: Runs the indoor unit at low fan speed for 16 minutes to dry the coil and prevent mold growth.
Follow Me: Allows the remote controller to act as a temperature sensor, optimizing temperature control based on its location.
Silence Function: Reduces noise by running the indoor unit at 1% fan speed.
Intelligent Eye: Uses an infrared sensor to detect human movement, adjusting compressor frequency to save energy when the room is unoccupied.

Maintenance Features

Error Display: The indoor unit displays error codes (e.g., E0/F4/EA for EEPROM Parameter Error, E1 for Communication Error, E3/F5 for Fan Speed outside Normal Range, EF for Intelligent Eye Module Error, P1 for Voltage Protection, P2 for IPM Module High Temperature, P4 for Inverter Compressor Drive Error) to assist in troubleshooting.
Troubleshooting Guides: The manual provides detailed flowcharts and instructions for diagnosing and resolving common issues, including checks for power supply, wiring, connections, sensor resistance, fan motor operation, and compressor resistance.
Component Replacement: Instructions are provided for replacing key components such as PCBs (Indoor, Outdoor, Display Board), sensors, fan motors, IPM boards, and reactors.
Disassembly Instructions: Step-by-step procedures with illustrations are included for disassembling the front panel, electrical parts, evaporator, fan motor, and intelligent eye, facilitating maintenance and repair.
Capacitor Discharge Warning: Emphasizes the importance of fully discharging capacitors before troubleshooting to prevent electrical shock.
Refrigerant Lines: Both refrigerant lines must be insulated separately. The manual provides pipe sizes and refers to the outdoor unit installation instructions for allowed piping lengths and refrigerant information.
System Evacuation and Charging: Detailed procedures for deep vacuum and triple evacuation methods are provided to ensure the system is free of air and liquid water, followed by charging instructions.
Electrical Data: Table 5 provides electrical data for indoor fan FLA and HP, and refers to outdoor unit instructions for maximum fuse/CB amp.
Wiring Diagram: A detailed wiring diagram (Fig. 4) is provided for sizes 09-12 (208-230V), showing connections between indoor and outdoor units, main board, fan motors, and sensors.
Compressor and IPM Checking: Instructions for measuring resistance values of compressor windings and performing IPM continuity checks using a digital tester.