TABLE OF CONTENTS
Application Guideline and Service Manual
USING R-22AND PURONR REFRIGERANT
RESIDENTIAL AIR CONDITIONERS AND HEAT PUMPS
TWO STAGE NON-COMMUNICATING
UNIT IDENTIFICATION
TABLE OF CONTENTS CONTINUED
TWO STAGE COMMUNICATING
Add-OnReplacement Retrofit - R22 to Puron
SAFETY CONSIDERATIONS
INSTALLATION GUIDELINE
INTRODUCTION
ACCESSORIES
5. Outdoor Air Temperature Sensor
ACCESSORY DESCRIPTIONS
4. Low-AmbientPressure Switch
7. Time-DelayRelay
LOW-AMBIENTCOOLING GUIDELINE
UNIT
UNIT HEIGHT
SIZE
Basic Cabinet Designs
CABINET ASSEMBLY
LONG LINE GUIDELINE
Evolution 2---Stage
Remove Top Cover - Mid-Tier /Deluxe
Remove Fan Motor Assembly - Mid-Tier /Deluxe
Remove Fan Motor Assembly-LegacyRNC Products
Control Box Cover—LegacyRNC Products
Legacy RNC and Legacy Line AC Control Box
Legacy RNC and Legacy Line HP Control Box
Labeling
Fig. 5 – Figure Labels
Contactor
Aluminum Wire
ELECTRICAL
Capacitor
Cycle Protector
Time-DelayRelay
Crankcase Heater
Fig. 7 - Wiring for Single-PoleContactor
High-PressureSwitch AC & HP
Pressure Switches
Low-PressureSwitch AC Only
To replace switch
Fig. 8 – Defrost Thermostat Location
Defrost Thermostat
Defrost Control Board
Check Defrost Thermostat
Defrost Speedup
Troubleshooting HK32EA001
If outdoor unit will not run
If defrost thermostat is stuck closed
Quiet Shift
Five-MinuteCompressor Delay
SYSTEM FUNCTION AND SEQUENCE OF OPERATION
Cooling
Compressor Plug
Troubleshooting HK32EA003
Fan Motor
Low-VoltageTerminals
COPELAND SCROLL COMPRESSOR
Compressor Failures
Mechanical Failures
Scroll Gas Flow
Noisy Compressor
Fig. 13 – Suction Line Loop
Fig. 14 – Identifying Compressor Terminals
Electrical Failures
Single-PhaseMotors
Open Circuit
Compressor Oil
REFRIGERATION SYSTEM
Refrigerant
UNIT OPERATION AND SAFETY HAZARD
Brazing
Synthetic Roof Precautionary Procedure
Table 4-OilCharging
PERSONAL INJURY AND UNIT DAMAGE HAZARD
Service Valves and Pumpdown
Pumpdown Procedure
PERSONAL INJURY HAZARD
all Puron
Heating Piston AccuRaterr - Heat Pumps Only
Preferred and Evolution Puron Heat Pumps
Fig. 19 – AccuRaterr Components
Cooling Mode or Defrost Mode, Solenoid Energized
Reversing Valve
Fig. 20 – Reversing Valve
Fig. 21 – Reversing Valve
Install Liquid-lineFilter Drier Indoor - AC
Liquid Line Filter Drier
Suction Line Filter Drier
Install Liquid-lineFilter Drier Indoor - HP
Accumulator
PERSONAL INJURY HAZARD
Fig. 24 – Accumulator
TXV Operation
Thermostatic Expansion Valve TXV
Install TXV
UNIT OPERATION HAZARD
Replacing TXV on an Indoor Coil pre-2006
MAKE PIPING CONNECTIONS
Fig. 26 – Typical TXV Installation
Replacing TXV on Indoor Coil post-2006
Coil Removal
REFRIGERATION SYSTEM REPAIR
Leak Detection
LEAK DETECTOR SOLUTION
PERSONAL INJURY HAZARD
Compressor Removal and Replacement
System Clean-UpAfter Burnout
PERSONAL INJURY HAZARD
Deep Vacuum Method
CHECK CHARGE
Evacuation
MINUTES
Low Superheat with Normal or Low Suction Pressure
TROUBLESHOOTING WITH SUPERHEAT
Basic Diagnostics
Low Superheat with High Suction Pressure
Hunting Superheat
Pseudo Evaporator Superheat Instructions
Table 6—PuronSystem Suction Pressure Drop
Example
Table 7—R-22System Suction Pressure Drop
Example
PSIG
PSIG
PSIG
PSIG
psig
psig
psig
psig
Liq Press
Table 10—PuronSubcooling Chart
Liquid Line Temperature _F
P---T
Superheat F
Table 11—PuronSuperheat Chart
Vapor Line Temperature F
psig
Liquid
Table 12—R-22Subcooling Chart
R---22Liquid Line Temperature _F
PT F
Superheat _F
Table 13—R-22Superheat Chart
R---22Vapor Line Temperature _F
PT F
Model Plug
TWO-STAGE 286ANA, 288ANA, 180ANA, 187ANA
Application Guidelines
Table 14—ModelPlug Information
GENERAL INFORMATION
Low Ambient Cooling
Defrost
CHECK CHARGE
Liquid-LineSolenoid Accessory
Heating Check Chart Procedure
Quiet Shift
Utility Interface With Evolution Control
SYSTEM FUNCTIONS AND SEQUENCE OF OPERATION
Cooling and Heating Operation
Compressor Operation on 286ANA/187ANA Models
ELECTRICAL SHOCK HAZARD
ECM Fan Motor Troubleshooting
Fan Motor
Outdoor Fan Motor Operation
Muffler, Accumulator, Reversing Valve RVS
Time Delays
THERMISTOR CURVE
Thermistors
CONTROL BOX
Incoming Power
Troubleshooting 187ANA & 286ANA Start Circuit
Contactor And Capacitor
Control Fault
TROUBLESHOOTING
Pressure Switch Protection
Systems Communication Failure
Compressor Voltage Sensing
230V Line Power Disconnect Detection
230v Brown-OutProtection Defeated
Contactor Shorted Detection
Failed Thermistor Default Operation
Unloader Test Procedure
Temperature Thermistors
Thermistor Sensor Comparison
Status Codes
Table 17—TROUBLESHOOTING
EXAMPLE
Two-StageHeat Pump non-communicating
Wiring with 226A, 286A, 288A
Speed Furnace and 226A, 286A, 288A
Two-StageHeat Pump non-communicating
Model Plug
TWO-STAGE286B/289B/180B/187B
Application Guidelines
Table 18-ModelPlug Information
Defrost
GENERAL INFORMATION
Low Ambient Cooling
Airflow Selection for 315AAV/355AAV Furnaces
CHECK CHARGE
Heating Check Chart Procedure
Liquid-LineSolenoid Accessory
Quiet Shift
Cooling and Heating Operation
Compressor Operation on 289B/180B Models
SYSTEM FUNCTIONS AND SEQUENCE OF OPERATION
Utility Interface With Evolution Control
ECM Fan Motor Troubleshooting
Time Delays
Pressure Switches
Outdoor Fan Motor Operation
Incoming Power
Control Box
Fig. 43 – Resistance Values Versus Temperature
Troubleshooting 187B & 286B Start Circuit
Pressure Switch Protection
Troubleshooting HK38EA015 circuit board
TROUBLESHOOTING
Control Fault
230V Line Power Disconnect Detection
286B Models - Compressor Thermal Cutout
289B Compressor Thermal Cutout
Unloader Test Procedure
Thermistor Sensor Comparison
Temperature Thermistors
Failed Thermistor Default Operation
Fig. 46 – Outdoor Air Thermistor OAT Attachment
Winding Resistance at 70_F±20_
Table 21—TROUBLESHOOTING
Table 20—Two-StageCompressor Resistances
Status Codes
2-StageAir Conditioner
TWO STAGE NON-COMMUNICATING127A/226A
Operating Ambient
Airflow Selections ECM Furnaces
Defrost Speedup
SYSTEM FUNCTION AND SEQUENCE OF OPERATION
Compressor Operation
Cooling
NOT INSTALL A PLUG WITHOUT AN INTERNAL RECTIFIER
Heating Check Chart Procedure
Unloader Test Procedure
CHECK CHARGE
TWO STAGE COMMUNICATING 167A/266A
Operating Ambient
Model Plug
Defrost
Evolution Controlled Low Ambient Cooling
GENERAL INFORMATION
Defrost Hold
Field Connections
MAJOR COMPONENTS
2-StageControl Board
Two Stage Compressor
Time Delays
Communication and Status Function Lights
Outdoor Fan Motor Operation
SYSTEM FUNCTIONS AND SEQUENCE OF OPERATION
Pressure Switch Protection
2230V Brown-OutProtection Defeated
TROUBLESHOOTING
Control Fault
Unloader Test Procedure
No 230V at Compressor Contactor
230V Line Power Disconnect Detection
Temperature Thermistors
Failed Thermistor Default Operation
Fig. 57 – Outdoor Air Thermistor OAT Attachment
Table 23—167A /266A TROUBLESHOOTING
Status Codes
EXAMPLE
Cleaning Outdoor Fan Motor and Blade
CARE AND MAINTENANCE
Cleaning Coil
Electrical Controls and Wiring
Final Check-Out
PURONR R-410AREFRIGERANT QUICK REFERENCE GUIDE
AIR CONDITIONER TROUBLESHOOTING CHART
Fig. 59 – Air Conditioner Troubleshooting Chart
HEAT PUMP TROUBLESHOOTING HEATING CYCLE
A90206
HEAT PUMP TROUBLESHOOTING COOLING CYCLE
A90207
TABLE #
INDEX OF TABLES
DESCRIPTION
TWO-STAGE286A/288A 180A/187A
Catalog No. SM01---6
Edition Date: 05/12
Replaces: SM01---5