Table of Contents
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186CNV / 284ANV
Evolution™ Extreme
Variable Speed Air conditioner and Heat Pump
2 to 5 Nominal Tons
Table of contents
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). 6
Communicating Evolution Control. . . . . . . . . . . . . . . . . . . . . . . 6
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
Service Manual
PAGE NO.
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
VFD LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 2 – VFD LED Indicator Functions . . . . . . . . . . . . . . . . . . 11
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
TROUBLESHOOTING CONTROL FEATURES . . . . . . . . . . . 12
SYSTEM DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 3 – Model Plug Information. . . . . . . . . . . . . . . . . . . . . . . . 13
COMPONENT DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 4 – Variable Speed Compressor Resistances (ohm)
(winding resistance at 68°F /20°C) . . . . . . . . . . . . . . . . . . . . . . . 14
Table 5 – DC Voltage and PWM Measurement . . . . . . . . . . . . . 14
Table 6 – Thermistor Resistance (k-ohms) vs. Temperature. . . . 14
DIAGNOSTIC CODES AND TROUBLESHOOTING . . . . . . . 17
Table 7 – Fault Code Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
REFRIGERATION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Compressor Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Servicing Systems on Roofs With Synthetic Materials . . . . . . . . 35
Synthetic Roof Precautionary Procedure . . . . . . . . . . . . . . . . . 35
Brazing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Service Valves and Pumpdown . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Pumpdown & Evacuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Pump Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Evacuation and Recovery of Refrigerant from 284ANV . . . . . 36
Reversing Valve (284ANV) . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Liquid Line Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Install Liquid-line Filter Drier Indoor. . . . . . . . . . . . . . . . . . . . 37
Suction Line Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Thermostatic Expansion Valve (TXV) . . . . . . . . . . . . . . . . . . . . 37
TXV Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Accumulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Vapor Injection Operation (5 Ton Models) . . . . . . . . . . . . . . . . . 38
Vapor Injection Electronic Exp. Valve (EXV VI)
(5 Ton Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
REFRIGERATION SYSTEM REPAIR. . . . . . . . . . . . . . . . . . . . . . 39
Leak Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Coil Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
PAGE NO.
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Related Manuals for Carrier Bryant Evolution Extreme 186CNV
Summary of Contents for Carrier Bryant Evolution Extreme 186CNV
- Page 1 186CNV / 284ANV Evolution™ Extreme Variable Speed Air conditioner and Heat Pump 2 to 5 Nominal Tons Service Manual Table of contents PAGE NO. PAGE NO. UNIT IDENTIFICATION ....... . . 2 Defrost Mode .
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Page 2: Unit Identification
186CNV / 284ANV: Service Manual UNIT IDENTIFICATION The unit is identified using a 16 digit model number structure. It is recommended providing the complete 16 digit model number when ordering replacement parts to insure receiving the correct parts. Model Number Nomenclature Product Major Cooling... -
Page 3: Electrical System Overview
186CNV / 284ANV: Service Manual ELECTRICAL COMPRESSOR & WARNING FAN SUB-SYSTEM ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. TRANSFORMER Exercise extreme caution when working on any electrical components. Shut off all power to system prior to troubleshooting. Some troubleshooting techniques require power to remain on. - Page 4 186CNV / 284ANV: Service Manual VFD SUB-SYSTEM COMPRESSOR REACTOR(S) FILTER 1 on 2, 3 ton 2 on 4, 5 ton Line Power Fig. 2 – Compressor / Fan Sub-System Diagram Fig. 3 – Wiring Diagram — 186CNV / 284ANV Model sizes 2 - 5 tons, 208/230-1 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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Page 5: Control Sub-System
186CNV / 284ANV: Service Manual Variable Frequency Drive (VFD) Crankcase Heater The VFD converts single phase 60 Hz line power into a variable Some equipment has a crankcase heater band installed around the frequency, variable voltage, 3-phase output to drive the compressor at compressor case near the bottom of the compressor. - Page 6 186CNV / 284ANV: Service Manual Control Connection (Communicating and Table 1 – DIP Swtich Settings Non-Communicating) Switch 1 Switch 2 Defrost Interval The primary system control interface for the PCM is the communicating Auto Evolution Control. The PCM also supports traditional 24VAC discrete Down 30 minutes control signals in an emergency mode of operation when a...
- Page 7 186CNV / 284ANV: Service Manual Bluetooth Service Port A200049 Status LED (Yellow) CCN Communication LED (Green) VFD LED (Red / Green) VFD-PCM Communication Port A200044 Fig. 7 – PCM Control Board Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 8 186CNV / 284ANV: Service Manual Accessory Control Components Model Plug Each control board contains a model plug. The model plug is used to Utility Curtailment identify the type and size of equipment to the PCM. The Utility Curtailment feature is controlled by an optional external Thermistors switch or relay wired to the two UTIL connections on the PCM as shown Fig.
- Page 9 186CNV / 284ANV: Service Manual CONTROL FEATURES AND OPERATION Some systems use an external Crankcase Heater installed around the bottom portion of the compressor. Other systems may use a stator Equipment Configuration (Model Plug) heating function where the VFD flows a DC current through the motor The PCM detects the model plug value at power-up and configures windings.
- Page 10 186CNV / 284ANV: Service Manual Defrost Interval For PCM software versions older than 4.0, use the following table: Mode Meaning The Defrost Interval is the amount of time that heating operation can Equipment is in standby with no diagnostic conditions occur in frost-accumulating conditions before a defrost cycle is required preventing or limiting operation.
- Page 11 186CNV / 284ANV: Service Manual VFD LEDs WARNING The VFD is equipped with several LEDs that indicate different statuses. ELECTRICAL HAZARD - HIGH VOLTAGE! Failure to follow this warning could result in personal injury or death. Electrical components may hold charge. DO NOT remove control box cover for 2 minutes after power has been removed from unit.
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Page 12: System Diagnostics
186CNV / 284ANV: Service Manual TROUBLESHOOTING TROUBLESHOOTING CONTROL FEATURES Diagnostics Display Diagnostic Code Recall Active diagnostics will be continuously displayed on the matrix display The Diagnostic Code Recall mode will be enabled if the Forced Defrost on the PCM. Active diagnostics can also be displayed on the system pins are shorted when power is applied to the equipment. -
Page 13: Component Diagnostics
186CNV / 284ANV: Service Manual 5. Loose fitting connections or wire breaks will also simulate a high pressure switch trip if the discharge pressure is high. Otherwise, a loose fitting or wire break will simulate a VFD communication MAIN PCM POWER TRANS error. - Page 14 186CNV / 284ANV: Service Manual Table 4 – Variable Speed Compressor Resistances (ohm) Table 6 – Thermistor Resistance (k-ohms) vs. Temperature (winding resistance at 68°F /20°C) Temp (F) OAT-OCT-OST WINDING Between terminals T1, T2, and T3 0.453 0.424 0.424 (U,V,W) Between terminal &...
- Page 15 186CNV / 284ANV: Service Manual Outdoor Suction Temperature (OST) Thermistor (284ANV Only) The OST thermistor is used for calculating suction super heat during heating operation.. The OST thermistor must be secured tightly to the suction tube and aligned longitudinally to the vertical surface of the tube axis (see Fig.
- Page 16 186CNV / 284ANV: Service Manual Electronic Expansion Valves (EXV, Fig. While the EXV-H and EXV-VI valve bodies are different for different models, the stator for all valves have the same electrical properties. The EXV coil resistance should fall between 43 and 49 ohms when measured from common to remaining terminals.
- Page 17 186CNV / 284ANV: Service Manual Bluetooth Module damage on harness. If no green or red led is present on the Bluetooth module, disconnect harness at the Bluetooth module and check for 18-30 The Bluetooth module used with Bryant Service Tech App can collect VAC between pins 1 and 3 at the Bluetooth module connector end of recent fault codes, monitor system operation, and update software.
- Page 18 186CNV / 284ANV: Service Manual Code 25-24 Model Plug Changed Code 31-11 Compressor High Pressure Limiting Code 25-24 indicates that the model plug presently installed is different Code 31-58 Compressor High Pressure Lockout from the previously stored valid model plug value. Code 25-24 will be This system contains a discharge pressure transducer to ensure set when the equipment is powered up with a valid model plug value that compressor reliability.
- Page 19 186CNV / 284ANV: Service Manual Code 33-15 Compressor Low Discharge Shutdown 100psi. The fault will clear and unit will start normally once pressure differential is below 100psi and demand is still present. Code 33-55 Compressor Low Discharge Lockout The most likely cause of this fault is a non-functioning PEV. Possibly the Code 33-15 will become active if compressor is running and discharge PEV suffered a mechanical failure, or the coil is not mounted to PEV.
- Page 20 186CNV / 284ANV: Service Manual Code 39-14 Fan Speed Error Code 51-02 OAT Shorted A code 39-14 is declared when the commanded speed is greater than The outdoor air thermistor determines operating range of compressor 200rpm and differs from actual speed (as reported from fan to VFD) by and fan speeds in cooling and heating operating modes.
- Page 21 186CNV / 284ANV: Service Manual Code 53-42 OST Shorted - Backup Heat Only Code 57-02 P1 Shorted Fault Code 57-42 P1 Shorted Lockout The suction thermistor is required for control of the outdoor EXV in HP systems. Similar to "OST Open" fault, heating mode operation will be Code 58-02 P2 Shorted Fault locked out if the OST is determined to be open or shorted.
- Page 22 186CNV / 284ANV: Service Manual Remove PEV connector from PCM and measure continuity between test itself by operating to a known position as the valve does not have the pins 1 & 3. If open, inspect wire for damage and repair if necessary. If no capability to feedback actual position.
- Page 23 186CNV / 284ANV: Service Manual Code 81-13 VFD System Fault - PFC within a 1 hour period will result in a code 82-55 and 2 hour lockout. Occasional occurrences of this code may happen due to momentary Code 81-53 VFD System Lockout - PFC power loss or electrical noise from utility.
- Page 24 186CNV / 284ANV: Service Manual Code 83-57 VFD Compressor Lockout - Current 1 connectivity, replace if necessary. If this does not fix problem, the VFD communicating components have been damaged and PCM or VFD This code will be set when any of the VFD compressor speed limiting requires replacement.
- Page 25 186CNV / 284ANV: Service Manual Code 88-34 VFD Internal Fault - PFCM Sensor A Code 88-39 VFD Internal Fault - Microprocessor Code 88-74 VFD Lockout - PFCM Sensor A Code 88-79 VFD Internal Lockout - Microprocessor The VFD has internal current measurement to protect PFC components This VFD has internal diagnostics to verify that the microprocessor is from exceeding current thresholds that may shorten the VFDs operating operating sufficiently to maintain safe compressor and fan operation.
- Page 26 186CNV / 284ANV: Service Manual Table 7 – Fault Code Table Code* Description Expansion Base Fault** Malfunction*** System Control Software Upgrade Needed Line Voltage Low Line Voltage High PCM-Bluetooth Module Communication Failure Indoor Coil Freeze Protection 5V PCM External Power Out of Range Invalid Model Plug Model Plug Missing Model Plug Changed...
- Page 27 186CNV / 284ANV: Service Manual Table 7 – Fault Code Table (Continued) Code* Description Expansion Base Fault** Malfunction*** EXV-H Phase Open EXV-H Power Short to Ground EXV-H Phase Short to Ground EXV-VI Phase Open EXV-VI Power Short to Ground EXV-VI Phase Short to Ground VFD Control Relay Coil Open VFD Control Relay Coil Shorted PFC Error...
- Page 28 186CNV / 284ANV: Service Manual A200188 Fig. 20 – 4T/5T Control Box Note: 4T VFD similar, not exact. 5T reactors have additional chokes A200187 to meet FCC requirement Fig. 19 – 2T/3T Control Box A200189 Fig. 21 – 2T/3T VFD A200190 Fig.
- Page 29 186CNV / 284ANV: Service Manual VFD main power relay. Terminals are not used. Reactor connection HPS connection (non VFD control relay replaceable fuse is and LED directly above) DC+, DC‐ terminals Fan motor fuse Compressor UVW Fan motor connections connections VFD to PCM comm connection A200191 Fig. 23 – 2/3T VFD Connections Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 30 186CNV / 284ANV: Service Manual Fan motor connections Compressor UVW DC+, DC‐ terminals connections VFD to PCM comm connection Reactor connection Fan motor fuse (hidden behind resistors) VFD main power VFD control relay relay. Terminals and LED are not used. HPS connection (non Filter board input replaceable fuse is directly above) A200192 Fig. 24 – 4/5T VFD Connections Note: 4T uses separate terminals Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 31 186CNV / 284ANV: Service Manual A200193 Fig. 25 – PCM (used on all models) Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 32 186CNV / 284ANV: Service Manual A200194 Fig. 26 – Bluetooth Module (used on all models) A200195 Fig. 27 – Fan Motor (used on all models) A200197 Fig. 29 – 5T Reactor (Note: 5T uses 2 reactors) A200196 A200198 Fig. 28 – 2/3/4T Rector Fig.
- Page 33 186CNV / 284ANV: Service Manual A200199 Fig. 31 – PCM to Bluetooth Module Comm Cable (used on all models) A200200 Fig. 32 – VFD to PCM Comm Cable (used on all models Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 34 186CNV / 284ANV: Service Manual A200201 Fig. 33 – PCM Wiring Diagram Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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Page 35: Refrigeration System
186CNV / 284ANV: Service Manual REFRIGERATION SYSTEM Brazing Refrigerant This section on brazing is not intended to teach a technician how to braze. There are books and classes which teach and refine brazing WARNING techniques. The basic points below are listed only as a reminder. Definition: The joining and sealing of metals using a nonferrous metal having a melting point over 800°F/426.6°C. - Page 36 186CNV / 284ANV: Service Manual The service valve cannot be field repaired; therefore, only a complete Reversing Valve (284ANV) valve or valve stem and service-port caps are available for replacement. In heat pumps, changeover between heating and cooling modes is If the service valve is to be replaced, a metal barrier must be inserted accomplished with a valve that reverses flow of refrigerant in system.
- Page 37 186CNV / 284ANV: Service Manual CAUTION FROM INDOOR COIL VIA SERVICE VALVE ON TO OUTDOOR COIL OUTDOOR COIL UNIT DAMAGE HAZARD ACCUMULATOR Failure to follow this caution may result in equipment damage or improper operation. TP-4 TP-3 TP-2 To avoid filter drier damage while brazing, filter drier must be wrapped in a heat-sinking material such as a wet cloth.
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Page 38: Electrical Shock Hazard
186CNV / 284ANV: Service Manual TXV Operation 6. Scratch matching marks on tubing studs and old accumulator. Scratch matching marks on new accumulator. Unbraze stubs from The TXV is a metering device that is used in air conditioning and heat old accumulator and braze into new accumulator. -
Page 39: Refrigeration System Repair
186CNV / 284ANV: Service Manual Vapor Injection Electronic Exp. Valve (EXV VI) A simple and inexpensive method of testing for leaks is to use soap bubbles. (See Fig. 41.) Any solution of water and soap may be used. (5 Ton Models) Soap solution is applied to all joints and connections in system. - Page 40 The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Bryant is under license. Other trademarks and trade names are those of their respective owners ©2021 Carrier. All rights reserved. Edition Date: 08/21...
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