Carrier T--298 service manual Remote Control Components

Page 38

a. Remove the batteries from the remote control.

b.Carefully remove the remote cover by inserting a nar- row flat object between the cover and remote body and prying apart.

c.Remove the brass screw holding the PCB in place.

d.Carefully remove the PCB board from the remote body, making sure the battery springs release from their holders.

e.Locate FR9 on the PCB board (see Figure 3-39).

f.Carefully cut the FR9 jumper wire.

g.Reverse above procedure for reassembly.

CAUTION

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

BATTERIES

&

COVER

Battery Springs

PCB

COVER

Spring Holders

BODY

Figure 3-38 Remote Control Components

PCB

FR9

Figure 3-39 Remote Control PCB (FR9 Location)

T--298

3-14

Image 38

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 CoolingClearing 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