SERVICE MANUAL for MODEL AirV Rooftop Air Conditioning Systems

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Table 2 -1 System Self -diagnostics Function (Ducted Remote)FlashesError Codes(Priority)Error Contents(Malfunction)2 1 ROOM AIR THERM-ISTOR FAILUREDisplay Pattern0.5 sec.(Twice)Allowed ModesFAN Mode3 2 INDOOR COILTHERMISTOR FAIL-URE3sec.3sec.0.5 sec (3Times)FAN ModeFURNACE Mode3sec.3sec.4 3 OUTDOOR COILTHERMISTORFAILURE0.5 sec. (4Times)FAN ModeFURNACE Mode3sec.3sec.5 4 COMPRESSORDRIVEMALFUNCTION0.5 sec. (5Times)FAN ModeFURNACE Mode3sec.3sec.6 5 REVERSING VALVEDRIVE MAL--FUNCTION0.5 sec.(6Times)FAN ModeFURNACE Mode1 6 DISCHARGE AIRTHERMISTOR FAIL-URE3sec.0.5 sec.(Once)3sec.FAN ModeFURNACE ModeContinuous 7 THERMISTORWIRING WRONG(only in coolingtest mode)3sec.3sec.0.5 sec. (Continuous)FAN Mode3sec.NOTE:If more than two errors occur, the highest ranked code is displayed. If the highest ranked error is cleared, thenext highest ranked error code is displayed.T--298 2--4 10/09
SECTION 3SERVICE AND MAINTENANCE3.1 PREVENTATIVE MAINTENANCECleaning--Clean evaporator coil and condenser coil.Hold flashlight behind coil to see if all spaces are clear.Dust accumulation obstructs or reduces airflow andresults in loss of cooling capacity. Both coils may bevacuumed when dry. Coils may also be brushed with astiff brush and then blown out with compressed air.Thoroughly clean base pan, motors, fan wheels, andother components.Clean cover and ceiling grill. Mild detergents reduceelectrostatic charges on plastic sections of the grill andare good cleaners.CAUTIONDo not use carbon tetrachloride, solvents,or waxes containing solvents to clean plasticsections.Painting--Paint any parts that show evidence of rustwith a good rust--prevention paint.Wiring - Check all wiring for deterioration and allelectrical contacts for tightness or corrosion.Mounting--Make sure unit is secure on roof accordingto installation instructions provided in Owner’s Guide.Check fans to insure that they are correctly positioned inthe center of the orifice, and tight on the shaft.Leaks--Check any connections that show evidence ofoil or leaks. When unit is properly installed (refer toOwner’s Guide) check gaskets for possible air leakage.Controls--Check unit to ensure all controls arefunctioning correctly and unit operation is normal.Vibrations can cause unwanted noise.NOTECheck to ensure that piping is not vibratingagainst side of the unit.NOTEFor proper cleaning and flushing, use a ULapproved refrigerant recovery/recyclingsystem.at 1--800--450--2211 for assistance, or to obtain theappropriate manual.3.3 SERVICE - GENERALGeneral Notes—These Service Instructions areprovided to assist the trained and qualified Carrierservice technician in repairing or replacing componentsof the AirV units.WARNINGBefore working on the unit be sure to firstdisconnect all electric power to the unit toavoid the possibility of electrical shock andpersonal injury. Before disconnecting, dischargecapacitors by shorting across thecapacitors terminals (Refer to paragraph3.6.8)WARNINGShield coils with cardboard to protecthands against injury from sharp metaledges when removing compressor and othercomponents.3.4 CEILING UNIT - FREE BLOW SYSTEMS3.4.1 Filter RemovalThe filters (Figure 3--1) are located in the ceiling grill. Toremove the filters, do the following:a. Grasp the edge of the filter at recess in the end of theceiling grill.b. Pull filter completely out of the filter slot.c. Vacuum filter or wash filter in luke--warm water.Shake off excess water and dry thoroughly.d. Replace filter by sliding the filter into the filter slot inthe ceiling grill until the filter frame is flush with the interiorgrill.FiltersNOTERefrigerant removal must always includerecovering the refrigerant, not allowing it toescape to the atmosphere.3.2 OPERATING INSTRUCTIONSSystem operating instructions, along with installationinstructions are included in the Air V “Owner’s Guide”,which is supplied with all Carrier Transport Air Vsystems. If the “Owner’s Guide” is not with the Air Vsystem contact Carrier Transport A/C Service Hot LineFigure 3 -1 Filter Removal - Free Blow10/093--1T--298
Page 1 and 2: RTransport Air Conditioning2P12BLKB
Page 3 and 4: SAFETY SUMMARYGENERAL SAFETY NOTICE
Page 5 and 6: CAUTIONDo not use carbon tetrachlor
Page 7 and 8: TABLE OF CONTENTS - Continued:SERVI
Page 9 and 10: LIST OF FIGURES - Continued:Figure
Page 11 and 12: SECTION 1DESCRIPTION1.1 INTRODUCTIO
Page 13 and 14: TABLE 1 -2 MODEL CHARTCEILING UNITM
Page 15 and 16: 123451.2.CoverCondenser3. Evaporato
Page 17 and 18: 12395647810111.2.Cover AssemblyScro
Page 19 and 20: 1.4 SYSTEM (UNIT) INSTALLED DIMENSI
Page 21 and 22: 3.6”14” Opening24.1”1.65” 1
Page 23 and 24: 12354SCHEMATIC VIEW15SUPPLY AIR123S
Page 25 and 26: 1.6 AirV SYSTEM COMPONENT SPECIFI-C
Page 27 and 28: passes into the accumulator. The ac
Page 29 and 30: SECTION 2TROUBLESHOOTINGFor ducted
Page 31: SYSTEM AND PROBABLE CAUSEPROBABLE R
Page 35 and 36: 3.4.6 Indoor Thermostat RemovalTo r
Page 37 and 38: 115V AC12V DCPCB DisplayHolding Cli
Page 39 and 40: 3.5.9 Heat Pump ThermistorsOn the H
Page 41 and 42: c. Gently pry 4 snap clips open and
Page 43 and 44: 3.6.9 Capacitor Testing and Replace
Page 45 and 46: Evaporator CoilRetainingRingFigure
Page 47 and 48: NOTEWhen reassembling the blower wh
Page 49 and 50: 3.8 THERMOSTAT INSTALLATION AND STA
Page 51 and 52: 3.12.2 Timeguard TimerA 3--minute t
Page 53 and 54: UPPER UNITFactory WiringField Wirin
Page 55 and 56: {115 VACSUPPLYWIRE“HOT”“NEUTR
Page 57 and 58: PLUG CONNECTS TO CEILING UNIT.SEE D
Page 59 and 60: “HOT”“NEUTRAL””GROUND”F
Page 61 and 62: TTHERMOSTAT INSTALLATION AND START-

SERVICE MANUAL for MODEL AirV Rooftop Air Conditioning Systems

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