Manuals / Carrier / Household Appliance / Heat Pump

Carrier 38AUQ appendix Fans Service Valves, Defrost Thermostat DFT HPS High Flow Access Ports

Models: 38AUQ

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Defrost Thermostat (DFT)

Defrost Thermostat (DFT)

HPS

High Flow

Access Ports

Fans

Service

Valves

Fig. 24 — 38AUQ*07 Exterior

Outdoor Coil

LOC

Fig. 25 — 38AUQ*07 Interior

25

Image 25

Carrier Fans Service Valves, Defrost Thermostat DFT HPS High Flow Access Ports, 38AUQ*07 Exterior, Outdoor Coil LOC

Contents

SAFETY CONSIDERATIONS CONTENTSInstallation, Start-Upand Service Instructions 38AUQReplacement /Retrofit – R22 to Puron INSTALLATION GUIDELINEUNIT OPERATION AND SAFETY HAZARD ELECTRICAL SHOCK HAZARDFig. 1 — 38AUQ*07-12Unit Dimensions UNIT SIZE 38AUQ UNIT SIZE 38AUQ Q A 1 2 A 3 8 A U0 C 6 – 0 A 0 A Fig. 2 — Model Number NomenclatureStep 2 — Complete Pre-InstallationChecks INSTALLATIONJobsite Survey Step 1 — Plan for Unit LocationCHECK 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 UNIT DAMAGE HAZARD INSTALL LIQUID LINE SOLENOID VALVE —Step 7 — Complete Electrical Connections Step 6 — Install AccessoriesUNIT OPERATION AND SAFETY HAZARD Field Power Supply —Units Without Factory-InstalledDisconnect — Convenience OutletsUnits with Factory-InstalledDisconnect — FIRE HAZARDInstalling Weatherproof Cover All Units — Field Control Wiring —Thermostat — 60 Hz Units Table 8 — Electrical Data — 38AUQ*07-12Full Load Amps Locked Rotor AmpsSTART-UP PRE-START-UPSystem Check Turn On Crankcase HeaterAdjust Refrigerant Charge Advanced Scroll Temperature Protection ASTPStart Unit Final ChecksFig. 17 — 38AUQ*08 Charging Chart Fig. 16 — 38AUQ*07 Charging ChartFig. 18 — 38AUQ*12 Charging Chart Fig. 19 — 38AUQ Wiring Diagram 208/230-3-60shown Base Unit Controls — OPERATING SEQUENCESERVICE ROUTINE SYSTEM MAINTENANCERefrigeration System Compressor OilRefrigerant System Pressure Access Ports Field Refrigerant Access PortsLiquid Line Filter Drier Outdoor Coil Metering DevicesCrankcase Heater Heat Pump ControlsCommercial Defrost Control Compressor OvertemperatureReversing valve control DefrostCompressor control Defrost Thermostats Indoor Fan Off DelayDefrost Speedup Functions Defrost Thermostat DFT HPS High Flow Access Ports Fans Service ValvesFig. 24 — 38AUQ*07 Exterior Outdoor Coil LOCHigh Flow Access Ports Fans Service ValvesFig. 26 — 38AUQ*08 Exterior Outdoor Coil Defrost Thermostat DFT LOC HPSHigh Flow Access Ports Fans Service ValvesFig. 28 — 38AUQ*12 Exterior Fig. 29 — 38AUQ*12 InteriorInput COMFORT ALERT DIAGNOSTIC MODULETable 14 — LED Status Codes Status LED Troubleshooting InformationStatus LED Status LED DescriptionPeriodic Clean Water Rinse LubricationRoutine Cleaning of Indoor Coil Surfaces Remove Surface Loaded FibersFASTENER TORQUE VALUES Service PartsTROUBLESHOOTING APPENDIX A WIRING DIAGRAM LISTAPPENDIX B 38AUQMOTORMASTER SENSOR LOCATIONS APPENDIX C6T HEAT PUMP 7.5THEATPUMP 10THEATPUMP Printed in U.S.AII. PRE-START-UP I. PRELIMINARY INFORMATIONSTART-UPCHECKLIST III. START UPCHECK INDOOR UNIT FAN SPEED AND RECORD