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appendix 38AUQ Wiring Diagram 208/230-3-60shown
Models:
38AUQ
1
18
36
36
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Troubleshooting
Install
Service Parts
38AUQ*07 Charging Chart
Dimension
Maintenance
Configuration
Field Control Wiring
Comfort Alert Diagnostic Module
Indoor Fan Off Delay
Page 18
Image 18
Fig. 19 — 38AUQ Wiring Diagram
(208/230-3-60
shown)
18
Page 17
Page 19
Page 18
Image 18
Page 17
Page 19
Contents
Installation, Start-Upand Service Instructions
CONTENTS
SAFETY CONSIDERATIONS
38AUQ
UNIT OPERATION AND SAFETY HAZARD
INSTALLATION GUIDELINE
Replacement /Retrofit – R22 to Puron
ELECTRICAL SHOCK HAZARD
Fig. 1 — 38AUQ*07-12Unit Dimensions
UNIT SIZE 38AUQ
UNIT SIZE 38AUQ
0 C 6 – 0 A 0 A
3 8 A U
Q A 1 2 A
Fig. 2 — Model Number Nomenclature
Jobsite Survey
INSTALLATION
Step 2 — Complete Pre-InstallationChecks
Step 1 — Plan for Unit Location
CHECK VERTICAL SEPARATION — If there is any vertical separation between the indoor and outdoor units, check to ensure that the separation is within allowable limits. Relocate equipment if necessary
INSTALL LIQUID LINE SOLENOID VALVE —
UNIT DAMAGE HAZARD
UNIT OPERATION AND SAFETY HAZARD
Step 6 — Install Accessories
Step 7 — Complete Electrical Connections
Field Power Supply —
Units with Factory-InstalledDisconnect —
Convenience Outlets
Units Without Factory-InstalledDisconnect —
FIRE HAZARD
Installing Weatherproof Cover
Field Control Wiring —
All Units —
Thermostat —
Full Load Amps
Table 8 — Electrical Data — 38AUQ*07-12
60 Hz Units
Locked Rotor Amps
System Check
PRE-START-UP
START-UP
Turn On Crankcase Heater
Start Unit
Advanced Scroll Temperature Protection ASTP
Adjust Refrigerant Charge
Final Checks
Fig. 16 — 38AUQ*07 Charging Chart
Fig. 17 — 38AUQ*08 Charging Chart
Fig. 18 — 38AUQ*12 Charging Chart
Fig. 19 — 38AUQ Wiring Diagram 208/230-3-60shown
OPERATING SEQUENCE
Base Unit Controls —
Refrigeration System
ROUTINE SYSTEM MAINTENANCE
SERVICE
Compressor Oil
Liquid Line Filter Drier
Field Refrigerant Access Ports
Refrigerant System Pressure Access Ports
Outdoor Coil Metering Devices
Commercial Defrost Control
Heat Pump Controls
Crankcase Heater
Compressor Overtemperature
Defrost
Reversing valve control
Compressor control
Indoor Fan Off Delay
Defrost Thermostats
Defrost Speedup Functions
Fig. 24 — 38AUQ*07 Exterior
Fans Service Valves
Defrost Thermostat DFT HPS High Flow Access Ports
Outdoor Coil LOC
Fig. 26 — 38AUQ*08 Exterior
Fans Service Valves
High Flow Access Ports
Outdoor Coil Defrost Thermostat DFT LOC HPS
Fig. 28 — 38AUQ*12 Exterior
Fans Service Valves
High Flow Access Ports
Fig. 29 — 38AUQ*12 Interior
COMFORT ALERT DIAGNOSTIC MODULE
Input
Status LED
Status LED Troubleshooting Information
Table 14 — LED Status Codes
Status LED Description
Routine Cleaning of Indoor Coil Surfaces
Lubrication
Periodic Clean Water Rinse
Remove Surface Loaded Fibers
Service Parts
FASTENER TORQUE VALUES
TROUBLESHOOTING
APPENDIX B
WIRING DIAGRAM LIST
APPENDIX A
38AUQ
6T HEAT PUMP 7.5THEATPUMP 10THEATPUMP
APPENDIX C
MOTORMASTER SENSOR LOCATIONS
Printed in U.S.A
START-UPCHECKLIST
I. PRELIMINARY INFORMATION
II. PRE-START-UP
III. START UP
CHECK INDOOR UNIT FAN SPEED AND RECORD