Carrier T--298 service manual Ceiling Grill -- Free Blow 3.3.3 Ceiling Panel Removal

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d. To replace the grill, place the grill up against the ceil- ing panel and align the screw holes in the grill with the ceiling panel.

e. Replace 4 screws.

Mounting

Screws

Figure 3-2 Ceiling Grill -- Free Blow 3.3.3 Ceiling Panel Removal

To remove the ceiling panel (Figure 3-3) do the following:

a. Remove the ceiling grill. (Refer to paragraph 3.3.2.)

b. Remove 5 screws securing the duct plate to the ceil- ing panel.

c.Remove 4 mounting bolts making sure to support the weight of the ceiling panel.

d.Disconnect the unit harnesses and main power wires from the ceiling panel.

e.Lower the ceiling panel from the air conditioning unit.

f.Reverse above procedure for reassembly.

Air Sweep Cam

Serial/Model

Number Tag

Duct Plate &

Mounting Holes

Mounting Bolts

Junction Box

Figure 3-3 Ceiling Panel Assembly

Heat Strip

Connection

Heater Assembly

Option

Figure 3-4 Ceiling Panel With Heat Option 3.3.4 Master Control Switch

To remove the master control switch, do the following: a. Remove ceiling grill. (Refer to paragraph 3.3.2.)

b. Remove 5 screws that secure the control assembly (Item 2, Figure 1-3) to the control box cover.

c. Remove the master control switch knob by grabbing the outside edge of the knob and pulling it off of the switch stem.

d. Remove 2 screws securing the master control switch to the control assembly.

e. Carefully disconnect wires from the master control switch. Label wires to aid in reassembly.

f. Reverse above procedure for reassembly.

Junction Box	Air Sweep Switch
With Cover
Thermostat	Master Control
	Master Control
	Switch

Figure 3-5 Control Box Assembly -- Free Blow 3.3.5 Air Sweep Switch Removal

To remove the air sweep switch, do the following: a. Remove ceiling grill. (Refer to paragraph 3.3.2.)

b. Remove 5 screws securing the control assembly (Item 2, Figure 1-3) to the control box cover.

c. Disconnect wires from the air sweep switch.

d. Pinch tabs on either end of the switch and slide out of lower control box cover.

e. Reverse above procedure for reassembly.

T--298

3-2

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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 UnitFor 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 Supply AIR Return AIRFree Blow Type Refrigerant CYCLE--STANDARD System CationsSTART--UP 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 Cooling Clearing Diagnostic Alarms Inadequate Heat HEAT--PUMPPriority Malfunction Service -- General Section Service and MaintenancePreventative Maintenance Ceiling Grill -- Free Blow 3.3.3 Ceiling Panel Removal Indoor Thermostat Removal Indoor Thermostat 3.3.7 Air Sweep RemovalFilter Removal Control Box Assembly RemovalCeiling Unit -- Ducted Systems Fuse Removal Service -- Upper Unit -- STANDARD, HC & HPPCB Display 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 Thermostat Powerbox AssemblyUpper Unit 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