Bryant Evolution 284ANV036 User Manual

Service Manual
Table of contents
PAGE NO. PAGE NO.
UNIT IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
ELECTRICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Aluminum Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
ELECTRICAL SYSTEM OVERVIEW . . . . . . . . . . . . . . . . . . . . 3
Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Compressor / Fan Sub-System . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Variable Frequency Drive (VFD) . . . . . . . . . . . . . . . . . . . . . . . . 5
VFD Filter Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Reactors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
High Pressure Switch (HPS). . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Compressor Brushless Permanent Magnet Motor (BPM) . . . . . 5
VFD + Compressor BPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Fan Brushless Permanent Magnet Motor (BPM) . . . . . . . . . . . . 5
VFD + Fan BPM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Crankcase Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CONTROL SUB-SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Primary Control Module (PCM). . . . . . . . . . . . . . . . . . . . . . . . . 5
Control Connection (Communicating and Non-Communicating). 5
Communicating Evolution Control. . . . . . . . . . . . . . . . . . . . . . . 5
Non-Communicating Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 1 – DIP Swtich Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
PCM Indicators and Matrix Display . . . . . . . . . . . . . . . . . . . . . . 6
Model Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pressure Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
VFD Control Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pressure Equalization Valve (PEV) . . . . . . . . . . . . . . . . . . . . . . 8
Reversing Valve (RVS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Heating Electronic Expansion Valve (EXV-H) . . . . . . . . . . . . . 8
Bluetooth® Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Accessory Control Components. . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Utility Curtailment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Liquid Line Solenoid Valve (LLS) . . . . . . . . . . . . . . . . . . . . . . . 8
CONTROL FEATURES AND OPERATION . . . . . . . . . . . . . . . . . . 9
Equipment Configuration (Model Plug) . . . . . . . . . . . . . . . . . . . . 9
Performance Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Compressor Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Compressor Protect Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Running. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Compressor Reliability Protection . . . . . . . . . . . . . . . . . . . . . . . 9
Sump Heat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Fan Operation . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . 9
Intermittent Low Fan Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Fan Operating Exceptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Cooling Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Heating Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Super Heat Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Defrost Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Defrost Interval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Defrost Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
PCM Indicators and Display Operation. . . . . . . . . . . . . . . . . . . . 10
Status Light. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Comm Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
VFD Comm Light. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Matrix Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Reprogrammability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
TROUBLESHOOTING CONTROL FEATURES . . . . . . . . . . . 11
SYSTEM DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 2 – Model Plug Information. . . . . . . . . . . . . . . . . . . . . . . . 12
COMPONENT DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 3 – Variable Speed Compressor Resistances (ohm)
(winding resistance at 68°F /20°C) . . . . . . . . . . . . . . . . . . . . . . . 12
Table 4 – DC Voltage and PWM Measurement . . . . . . . . . . . . . 13
Table 5 – Thermistor Resistance (k-ohms) vs. Temperature. . . . 13
DIAGNOSTIC CODES AND TROUBLESHOOTING . . . . . . . 15
Table 6 – Fault Code Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
REFRIGERATION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Compressor Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Servicing Systems on Roofs With Synthetic Materials. . . . . . . . 34
Synthetic Roof Precautionary Procedure . . . . . . . . . . . . . . . . . 34
Brazing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Service Valves and Pumpdown . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Pumpdown & Evacuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Pump Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Evacuation and Recovery of Refrigerant from 284ANV . . . . . 35
Reversing Valve (284ANV) . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Liquid Line Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Install Liquid-line Filter Drier Indoor. . . . . . . . . . . . . . . . . . . . 36
Suction Line Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Thermostatic Expansion Valve (TXV) . . . . . . . . . . . . . . . . . . . . 36
TXV Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Accumulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Vapor Injection Operation (5 Ton Models) . . . . . . . . . . . . . . . . . 37
Vapor Injection Electronic Exp. Valve (EXV VI)
(5 Ton Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
REFRIGERATION SYSTEM REPAIR. . . . . . . . . . . . . . . . . . . . . . 38
Leak Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Coil Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
186CNV / 284ANV
Evolution™ Extreme
Variable Speed Air conditioner and Heat Pump
2 to 5 Nominal Tons

Bryant Evolution 284ANV036 Specifications

General

Brand	Bryant
Model	Evolution 284ANV036
Category	Heat Pump
Language	English

Summary

SAFETY CONSIDERATIONS

Electrical and Operational Safety Warnings

Provides critical warnings regarding electrical shock, unit operation, and potential hazards.

ELECTRICAL SYSTEM

Electrical Shock Hazard and Aluminum Wire

Addresses electrical shock hazards and guidelines for using aluminum wire in branch circuits.

Variable Frequency Drive (VFD) Components

CONTROL SUB-SYSTEM

Primary Control Module (PCM)

Details the PCM as the central control unit, its sensors, and actuators.

Control Connection Types

Explains connections for communicating and non-communicating controls.

CONTROL FEATURES AND OPERATION

Compressor Operation Details

Defrost Management

Defrost Interval and Process

TROUBLESHOOTING CONTROL FEATURES

Diagnostics Display and Forced Defrost

Protect Delay Override and Code Recall

Protection Mechanisms

High Pressure Switch and Protection

Low Pressure Protection

DIAGNOSTIC CODES AND TROUBLESHOOTING

Line Voltage and Communication Faults

Troubleshooting codes related to low/high line voltage and communication failures.

Model Plug, PCM, and Fuse Faults

Covers model plug changes, PCM version issues, EEPROM writes, and fuse errors.

Compressor Temperature and Pressure Faults

Covers compressor low/high discharge, temp, and compression limit faults.

Fan Operation and System Control Faults

Diagnoses fan start, speed, shutdown faults, and defrost/PEV timeouts.

Thermistor and Pressure Sensor Faults

Covers remaining ODT, OST, and pressure sensor faults (P1, P2).

Valve and VFD Relay Faults

Details faults for RVS, PEV, EXV valves, and VFD control relay errors.

VFD System, Wiring, and Power Dropout Faults

Covers VFD PFC, PFCM, wiring, current limit, and power dropout issues.

VFD Voltage, Current, and Overtemperature Faults

Addresses VFD line voltage, compressor current, and overtemperature faults.

VFD Internal Sensor Faults

Details VFD internal faults related to PFCM temperature and DC discharge sensors.

VFD Internal Faults Continued

Continues VFD internal fault diagnostics, including PFCM temp and DC discharge sensors.

System Protection and PCM Faults

Diagnoses codes for freeze protection, 5V power issues, and model plug errors.

Pressure and High Pressure Protection Faults

Diagnoses codes related to compressor high pressure limits and switch trips.

VFD and Compressor Start Faults

Troubleshoots VFD start failures, high differential pressure, and estimator errors.

Thermistor Faults

Covers OAT, OCT, and OST sensor open/short faults.

REFRIGERATION SYSTEM

Refrigerant Handling and Safety

Service Valves and Pumpdown

Pumpdown & Evacuation Procedures

Evacuation and Recovery Procedures

Refrigerant Evacuation and Recovery

REFRIGERATION SYSTEM REPAIR

Leak Detection Methods