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Carrier 38AUQ Appendix C, Motormaster Sensor Locations, 6T HEAT PUMP 7.5THEATPUMP 10THEATPUMP

Models: 38AUQ

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APPENDIX C

MOTORMASTER SENSOR LOCATIONS

MOTOR MASTER SENSOR MUST BE POSITIONED BETWEEN METERING DEVICE (SECOND FROM TOP)

AND TUBE SHEET

MOTOR MASTER SENSOR

MUST BE POSITIONED

ON VAPOR STUB

(FOURTH FROM TOP)

MOTOR MASTER SENSOR

MUST BE POSITIONED

ON VAPOR STUB

(FOURTH FROM TOP)

6T HEAT PUMP

7.5THEATPUMP

10THEATPUMP

Fig. 31 Motormaster Sensor Locations per Unit Size

Copyright 2009 Carrier Corp • 7310 W. Morris St. • Indianapolis, IN 46231	Printed in U.S.A.	Edition Date: 09/09	Catalog No: 38AUQ-01SI

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.			Replaces: New

Page 34

Image 34

Carrier 38AUQ appendix Appendix C, Motormaster Sensor Locations, 6T HEAT PUMP 7.5THEATPUMP 10THEATPUMP, Printed in U.S.A

Contents

Installation, Start-Upand Service Instructions CONTENTSSAFETY CONSIDERATIONS 38AUQUNIT OPERATION AND SAFETY HAZARD INSTALLATION GUIDELINEReplacement /Retrofit – R22 to Puron ELECTRICAL SHOCK HAZARDFig. 1 — 38AUQ*07-12Unit Dimensions UNIT SIZE 38AUQ UNIT SIZE 38AUQ 0 C 6 – 0 A 0 A 3 8 A UQ A 1 2 A Fig. 2 — Model Number NomenclatureJobsite Survey INSTALLATIONStep 2 — Complete Pre-InstallationChecks 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 INSTALL LIQUID LINE SOLENOID VALVE — UNIT DAMAGE HAZARDUNIT OPERATION AND SAFETY HAZARD Step 6 — Install AccessoriesStep 7 — Complete Electrical Connections Field Power Supply —Units with Factory-InstalledDisconnect — Convenience OutletsUnits Without Factory-InstalledDisconnect — FIRE HAZARDInstalling Weatherproof Cover All Units — Field Control Wiring —Thermostat — Full Load Amps Table 8 — Electrical Data — 38AUQ*07-1260 Hz Units Locked Rotor AmpsSystem Check PRE-START-UPSTART-UP Turn On Crankcase HeaterStart Unit Advanced Scroll Temperature Protection ASTPAdjust Refrigerant Charge 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 OPERATING SEQUENCE Base Unit Controls —Refrigeration System ROUTINE SYSTEM MAINTENANCESERVICE Compressor OilLiquid Line Filter Drier Field Refrigerant Access PortsRefrigerant System Pressure Access Ports Outdoor Coil Metering DevicesCommercial Defrost Control Heat Pump ControlsCrankcase Heater Compressor OvertemperatureReversing valve control DefrostCompressor control Defrost Thermostats Indoor Fan Off DelayDefrost Speedup Functions Fig. 24 — 38AUQ*07 Exterior Fans Service ValvesDefrost Thermostat DFT HPS High Flow Access Ports Outdoor Coil LOCFig. 26 — 38AUQ*08 Exterior Fans Service ValvesHigh Flow Access Ports Outdoor Coil Defrost Thermostat DFT LOC HPSFig. 28 — 38AUQ*12 Exterior Fans Service ValvesHigh Flow Access Ports Fig. 29 — 38AUQ*12 InteriorCOMFORT ALERT DIAGNOSTIC MODULE InputStatus LED Status LED Troubleshooting InformationTable 14 — LED Status Codes Status LED DescriptionRoutine Cleaning of Indoor Coil Surfaces LubricationPeriodic Clean Water Rinse Remove Surface Loaded FibersService Parts FASTENER TORQUE VALUESTROUBLESHOOTING APPENDIX B WIRING DIAGRAM LISTAPPENDIX A 38AUQ6T HEAT PUMP 7.5THEATPUMP 10THEATPUMP APPENDIX CMOTORMASTER SENSOR LOCATIONS Printed in U.S.ASTART-UPCHECKLIST I. PRELIMINARY INFORMATIONII. PRE-START-UP III. START UPCHECK INDOOR UNIT FAN SPEED AND RECORD

APPENDIX C

MOTORMASTER SENSOR LOCATIONS

6T HEAT PUMP

Printed in U.S.A.

Edition Date: 09/09

Replaces: New