Carrier T--298 service manual Table of Contents

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TABLE OF CONTENTS

PARAGRAPH NUMBER

Page

DESCRIPTION

. 1-1

1.1

INTRODUCTION

. 1-1

1.2

SERIAL NUMBER IDENTIFICATION

. 1-1

1.3

DESIGN CHANGE DESCRIPTIONS

. 1-1

1.4

AirV SYSTEM COMPONENT SPECIFICATIONS

. 1-9

1.4.1

Refrigerant Charge

. 1-9

1.4.2 Compressor - 115 Volts, 60 Cycles, 1 Phase

. 1-9

1.4.3 Compressor - 220 Volts, 50 Cycles, 1 Phase

. 1-9

1.4.4 Thermostat Range (All Free Blow Units)

. 1-9

1.5

START-UP

. 1-9

1.6

REFRIGERANT CYCLE-STANDARD SYSTEM

. 1-9

1.7

REFRIGERANT CYCLE - HEAT PUMP

. 1-10

1.7.1

Cooling

. 1-10

1.7.2

Heating

. 1-11

TROUBLESHOOTING

. 2-1

2.1

NO POWER TO UNIT

. 2-1

2.2

DUCTED UNIT WILL NOT OPERATE

. 2-1

2.3

DUCTED UNIT WILL NOT COOL

. 2-1

2.4

COMPRESSOR POWER SUPPLY OPEN

. 2-1

2.5

COMPRESSOR RUNS BUT CYCLES, FAN OPERATING ERRATICALLY

. 2-1

2.6

CYCLES ON COMPRESSOR OVERLOAD

. 2-2

2.7

INSUFFICIENT COOLING, COOLING AIR NOT ADEQUATE

. 2-2

2.8

CONDENSER AIR NOT ADEQUATE

. 2-2

2.9

INSUFFICIENT COOLING

. 2-2

2.10

COMPRESSOR FLOODING

. 2-2

2.11

HEATER CYCLES ON LIMIT SWITCH (HEAT/ COOL VERSION ONLY)

. 2-2

2.12

AIR SWEEP NOT WORKING (FREE BLOW VERSION ONLY)

. 2-2

2.13

WATER LEAKAGE

. 2-2

2.14

INADEQUATE HEAT (FREE-BLOW HEAT ONLY)

. 2-3

2.15

INADEQUATE HEAT (HEAT-PUMP)

. 2-3

Clearing Diagnostic Alarms

. 2-3

SERVICE AND MAINTENANCE

. 3-1

3.1

PREVENTATIVE MAINTENANCE

. 3-1

3.2

SERVICE - GENERAL

. 3-1

3.3

CEILING UNIT - FREE BLOW SYSTEMS

. 3-1

3.3.1

Filter Removal

. 3-1

3.3.2

Ceiling Grill Removal

. 3-1

3.3.3

Ceiling Panel Removal

. 3-2

3.3.4

Master Control Switch

. 3-2

3.3.5 Air Sweep Switch Removal

. 3-2

3.3.6

Indoor Thermostat Removal

. 3-3

3.3.7

Air Sweep Removal

. 3-3

3.3.8 Heat Strip Assembly Removal

. 3-3

 

 

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T--298

 

 

 

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Contents Model AirV AirV Operating Precautions Safety SummaryGeneral Safety Notices Maintenance PrecautionsSpecific Warning and Caution Statements Specific Warnings and CautionsSafety 298 Table of Contents Table of Contents List of Figures Figure NumberList of Tables Table NumberSerial Number Identification Section DescriptionIntroduction Design Change DescriptionsUpper Unit Roof Ceiling UnitAdditional Support Manuals MANUAL--FORM no Equipment Covered Type of ManualFor Part no Ceiling Unit Component Identification Free--Blow Component Identification -- Low Profile -- Upper Unit Component Listing--Ceiling Unit For Ducted Systems Supply AIR Return AIRFree Blow Type Cations START--UPRefrigerant CYCLE--STANDARD System Refrigerant Flow Schematic -- Heat Pump -- Cool Mode Cooling Refrigerant Cycle -- Heat PumpPage Section Troubleshooting Condenser AIR not Adequate Heater Cycles on Limit Switch HEAT/ Cool Version onlyInsufficient COOLING, Cooling AIR not Adequate Insufficient CoolingClearing Diagnostic Alarms Inadequate Heat HEAT--PUMPPriority Malfunction Section Service and Maintenance Preventative MaintenanceService -- General Ceiling Grill -- Free Blow 3.3.3 Ceiling Panel Removal Indoor Thermostat Removal Indoor Thermostat 3.3.7 Air Sweep RemovalControl Box Assembly Removal Ceiling Unit -- Ducted SystemsFilter Removal Service -- Upper Unit -- STANDARD, HC & HP PCB Display RemovalFuse Removal Compressor Replacement 15 Control BoxUpper Scroll Assembly Removal 19 Motor AssemblyAir Handling System Removal 23 Blower WheelLine Voltage -- 10% 27 Upper Scroll Assembly Locking Tabs b. & Screw Locations c 30 Condenser Fan Assembly Retaining Ring Condenser Motor Removal 34 Evaporator Motor Locking TabsBe permanent. It cannot be changed back to Capacitor RemovalChange from Fahrenheit to Celsius will Fahrenheit38 Remote Control Components SET Thermostat Configuration LCD DisplayCheck Thermostat Operation Powerbox Assembly Upper UnitThermostat Thermostat Powerbox Assembly Ac to ry Wiri ng Fie ld Wiri ngSection Wiring Schematics Upper Unit Schematic -- Standard & HCCeiling Unit Schematic -- Cooling Only Heat Pump -- Ceiling Unit -- Free Blow Heat Pump -- Upper Unit -- Ducted 10 Ceiling Unit -- Wall Thermostat -- Ducted & Free Blow Wall Mounted ThermostatsIndex Ceiling Unit -- Ducted Systems Ceiling Unit -- Free Blow