Advertisement
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). 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
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
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
PAGE NO.
Advertisement
Table of Contents
Related Manuals for Bryant Evolution 186CNV Series
Summary of Contents for Bryant Evolution 186CNV Series
- 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 .
-
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 WARNING COMPRESSOR & FAN SUB-SYSTEM ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Exercise extreme caution when working on any electrical components. TRANSFORMER 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.
-
Page 5: Control Sub-System
The PCM contains indicators and displays to provide operating status The compressor uses a highly efficient, brushless permanent magnet and conditions. The PCM also supports communication with the Bryant motor. Motor speed is synchronized to, and controlled by the frequency Service Tech App through the Bluetooth Module which provides of the drive provided by the VFD. - Page 6 186CNV / 284ANV: Service Manual Non-Communicating Control PCM Indicators and Matrix Display The non-communicating control connections are shown in Fig. 5. The PCM contains three indicator lights (LEDs) and a dot matrix Specific connections depend on system configuration. Note that O and display.
- 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 The Bluetooth Module is a wireless service communication device allowing the equipment to communicate with the Bryant Service Tech App. The Bryant Service Tech App can be used to retrieve diagnostic information, equipment operating history, and reprogram the PCM or the VFD.
- 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 PCM Indicators and Display Operation The software can also be updated from the Bryant Service Tech App via the Bluetooth Module. This is the only software update method for Operation and interpretation of each indicator and display is described.
-
Page 11: System Diagnostics
186CNV / 284ANV: Service Manual TROUBLESHOOTING SYSTEM DIAGNOSTICS TROUBLESHOOTING CONTROL FEATURES 24VAC Power Distribution Diagnostics Display CAUTION Any active diagnostics will be continuously displayed on the matrix display. Please refer to PCM Indicators and Display Operation in the EQUIPMENT DAMAGE HAZARD Control Features and Operation section for further information. -
Page 12: Component Diagnostics
186CNV / 284ANV: Service Manual – The control will attempt to compensate for falling below the low Table 2 – Model Plug Information pressure limit. A shutdown will occur if the system is unable to PIN RESISTANCE bring pressure back above the desired limit. The control will shut MODEL MODEL PLUG (K-ohms) - Page 13 186CNV / 284ANV: Service Manual If the OAT sensor fails, compressor operating speed may be limited to a Table 4 – DC Voltage and PWM Measurement reduced range of operation. When OAT is faulted and the equipment is Vdc-GND Vcc-GND Vsp-GND FG-GND running in heating mode, the reported value of OAT will be the same as...
- Page 14 PCM. Connect a gauge manifold to the appropriate gauge port fitting and compare the gauge reading with the pressure reported by the PCM to the Evolution Control or to the Bryant Service Tech App. The connections at the PCM should be swapped to ensure the discrepancy is not related to PCM translation of transducer input signal.
- Page 15 Also inspect and repair any wire damage on harness. If no green or red led is present on the Bluetooth The Bluetooth module used with Bryant Service Tech App can collect module, disconnect harness at the Bluetooth module and check for 18-30 recent fault codes, monitor system operation, and update software.
- Page 16 PCM should be reprogrammed Extreme high ambient temperatures may cause this fault to set and manually using the Evolution Control or the Bryant Service Tech App. system will be inoperable during this time.
- Page 17 186CNV / 284ANV: Service Manual Code 32-59 Low Pressure Lockout Check compressor wiring for secure connections, wire damage, and wire order. This code indicates that the VFD is not able to rotate the This fault is triggered when the suction pressure is too low to safely start compressor rotor enough to complete starting process, indicating the compressor.
- Page 18 186CNV / 284ANV: Service Manual Code 39-13 Fan Start Failure Code 44-13 PEV Timeout Code 39-53 Fan Start Failure Lockout The PEV is used to equalize suction and discharge pressures and lessen the starting torque required from compressor and VFD. The PEV will When a demand startup begins a fan speed is commanded to VFD.
- Page 19 186CNV / 284ANV: Service Manual Code 52-02 OCT Shorted Code 54-02 ODT Shorted The outdoor coil thermistor is used to determine when the outdoor coil is The discharge thermistor is used to protect the compressor and ensure discharge superheat is present at all times. When "ODT Shorted" completely cleared during defrost.
- Page 20 186CNV / 284ANV: Service Manual Code 61-41 RVS Open Lockout valve will close to help maintain pressure differential and optimize cyclic efficiency. HP units will not operate if this fault is active because Applies to HP only. Reversing valve is required to be energized for the valve position at time of failure is unknown.
- Page 21 186CNV / 284ANV: Service Manual To troubleshoot this fault, remove the PCM-VFD harness from the PCM Code 81-14 VFD System Fault - Unbalanced PFCM while leaving the other end connected to the VFD. Check the resistance Code 81-54 VFD System Lockout - Unbalance PFCM between the pins 6 &...
- Page 22 186CNV / 284ANV: Service Manual Code 82-16 VFD System Fault - Low Line Volt Code 83-57 VFD Compressor Lockout - Current 1 Code 82-56 VFD System Lockout - Low Line Volt This code will be set when any of the VFD compressor speed limiting codes are active and the compressor speed is reduced below the lowest The VFD monitors line voltage and will set code 82-16 if line voltage allowable operating speed for a given OAT.
- Page 23 VFD should be reprogrammed manually hour period will result in 88-75 malfunction and 4 hour lockout. While using the Evolution Control or the Bryant Service Tech App. this fault or malfunction is active the unit is inoperable. This malfunction, once set, is unlikely to go away and indicates VFD damage.
- Page 24 186CNV / 284ANV: Service Manual Code 88-37 VFD Internal Fault - PFCM Temp Sens The VFD has internal temperature sensors to monitor critical power components and take action if operating temperatures cross thresholds that may shorten the VFDs operating life. If the PFCM temperature sensor fails it will no longer be capable of preventing the PFC circuit from operation above the safe reliable temperature threshold.
- Page 25 186CNV / 284ANV: Service Manual Table 6 – Fault Code Table Code* Description Expansion Base Fault** Malfunction*** 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 VFD/Equipment Model Mismatch...
- Page 26 186CNV / 284ANV: Service Manual Table 6 – 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 27 186CNV / 284ANV: Service Manual A200187 A200188 Fig. 18 – 2T/3T Control Box Fig. 19 – 4T/5T Control Box Note: 4T VFD similar, not exact. 5T reactors have additional chokes to meet FCC requirement A200189 Fig. 20 – 2T/3T VFD A200190 Fig.
- Page 28 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. 22 – 2/3T VFD Connections Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 29 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. 23 – 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 30 186CNV / 284ANV: Service Manual A200193 Fig. 24 – PCM (used on all models) Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 31 186CNV / 284ANV: Service Manual A200194 Fig. 25 – Bluetooth Module (used on all models) A200197 Fig. 28 – 5T Reactor (Note: 5T uses 2 reactors) A200195 Fig. 26 – Fan Motor (used on all models) A200196 A200198 Fig. 27 – 2/3/4T Rector Fig.
- Page 32 186CNV / 284ANV: Service Manual A200199 Fig. 30 – PCM to Bluetooth Module Comm Cable (used on all models) A200200 Fig. 31 – 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 33 186CNV / 284ANV: Service Manual A200201 Fig. 32 – PCM Wiring Diagram Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
-
Page 34: 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 35 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 36 186CNV / 284ANV: Service Manual FROM INDOOR COIL VIA CAUTION TO OUTDOOR SERVICE VALVE ON OUTDOOR COIL COIL ACCUMULATOR UNIT DAMAGE HAZARD 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.
-
Page 37: 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 38: 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. 40.) Any solution of water and soap may be used. (5 Ton Models) Soap solution is applied to all joints and connections in system. - Page 39 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 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 40 186CNV / 284ANV: Service Manual ©2020 Carrier Edition Date: 06/20 Catalog No: SM186CNV-284ANV-01 A Carrier Company Replaces: NEW Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.