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Carrier T--298 service manual Safety 298

Models: T--298

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CAUTION

Coil fins are sharp. Use care when removing the cover form the base pan to avoid personal injury.

CAUTION

The change from Fahrenheit to Celsius will be permanent. It cannot be changed back to Fahr- enheit.

CAUTION

When re--assembling, ensure the battery springs are correctly placed in the battery spring holders.

CAUTION

Improper wiring or installation may damage thermostat. Wiring must conform to local and national electrical codes.

Safety-- iii

T-298

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Carrier T--298 service manual Safety 298

Contents

Model AirV AirV General Safety Notices Safety SummaryOperating Precautions Maintenance PrecautionsSpecific Warnings and Cautions Specific Warning and Caution StatementsSafety 298 Table of Contents Table of Contents Figure Number List of FiguresTable Number List of TablesIntroduction Section DescriptionSerial Number Identification Design Change DescriptionsCeiling Unit Upper Unit RoofFor Part no Additional Support ManualsMANUAL--FORM no Equipment Covered Type of Manual Ceiling Unit Component Identification Free--Blow Component Identification -- Low Profile -- Upper Unit Component Listing--Ceiling Unit For Ducted Systems Return AIR Supply AIRFree Blow Type Refrigerant CYCLE--STANDARD System CationsSTART--UP Refrigerant Cycle -- Heat Pump Refrigerant Flow Schematic -- Heat Pump -- Cool Mode CoolingPage Section Troubleshooting Insufficient COOLING, Cooling AIR not Adequate Heater Cycles on Limit Switch HEAT/ Cool Version onlyCondenser AIR not Adequate Insufficient CoolingInadequate Heat HEAT--PUMP Clearing Diagnostic AlarmsPriority Malfunction Service -- General Section Service and MaintenancePreventative Maintenance Ceiling Grill -- Free Blow 3.3.3 Ceiling Panel Removal Indoor Thermostat 3.3.7 Air Sweep Removal Indoor Thermostat RemovalFilter Removal Control Box Assembly RemovalCeiling Unit -- Ducted Systems Fuse Removal Service -- Upper Unit -- STANDARD, HC & HPPCB Display Removal 15 Control Box Compressor Replacement19 Motor Assembly Upper Scroll Assembly Removal23 Blower Wheel Air Handling System RemovalLine Voltage -- 10% 27 Upper Scroll Assembly Locking Tabs b. & Screw Locations c 30 Condenser Fan Assembly Retaining Ring 34 Evaporator Motor Locking Tabs Condenser Motor RemovalChange from Fahrenheit to Celsius will Capacitor RemovalBe permanent. It cannot be changed back to Fahrenheit38 Remote Control Components LCD Display SET Thermostat ConfigurationCheck Thermostat Operation Thermostat Powerbox AssemblyUpper Unit Ac to ry Wiri ng Fie ld Wiri ng Thermostat Powerbox AssemblyUpper Unit Schematic -- Standard & HC Section Wiring SchematicsCeiling Unit Schematic -- Cooling Only Heat Pump -- Ceiling Unit -- Free Blow Heat Pump -- Upper Unit -- Ducted Wall Mounted Thermostats 10 Ceiling Unit -- Wall Thermostat -- Ducted & Free BlowCeiling Unit -- Ducted Systems Ceiling Unit -- Free Blow Index