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Carrier T--298 - page 1
R T ransport Air Conditioning T - - 298 Rev D SER VICE MANUAL for MODEL AirV Rooftop Air Conditioning Systems R T ransport Air Conditioning 2P C F H 1 2 BLK BLU WHT WHT EV AP . GRN/YEL WHT BRN 1 2 YEL RED BLU R C S RED PTC BLU ...
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Carrier T--298 - page 2
SER VICE MANUAL For MODELS 68R V1 1302A 68R V14102A 68R V14103A 68R V141 12A 68R V15102A 68R V15103A AirV AIR CONDITIONING AND HEA TING EQUIPMENT ...
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Carrier T--298 - page 3
T -298 Safe ty- - i SA FETY S UMMAR Y GENE RAL SAFE TY NOT ICES The f ollowing general safet y notic es supplement the spec ific warnings and caut ions appearing elsewher e in this m anual. They are recomm ended precautions t hat mus t be understood and applied during oper ation and maint enance of the equipment cov ered herein. T he general saf et ...
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Carrier T--298 - page 4
T - - 298 Safe ty- - ii SPECIF IC W ARNING AND CAUTI ON ST A TEMENTS The st atement s list ed below are applicable to t he refriger ation unit and appear elsewhere in this manual. Thes e recommended prec autions mus t be underst ood and applied during operat ion and maintenance of the equipment covered her ein. SPECIFI C W ARNINGS AND CAUTI ONS W A ...
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Carrier T--298 - page 5
T -298 Safe ty- - i ii CAUTI ON Coi l fi ns are sharp . Use care w hen remo ving the co ver form th e base p an to avo id perso nal injury . CAUTI ON The cha nge fr om Fahre nheit to Cels ius will be per mane nt. It ca nnot be cha nged back to Fahr- enhe it. CAUTI ON Wh en re - - assembl ing , ensu re t he batt ery sp ring s are co rrectly p laced ...
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Carrier T--298 - page 6
i T - - 298 T ABLE OF CONTENTS P ARAG RAPH NUMBER Page DESCRI PTI ON 1- 1 ............................................................................... 1.1 I NTRODUCT ION 1-1 ..................................................................... 1.2 SERIAL NUMBER IDENTIFICA T ION 1-1 .................................................... 1.3 DE SIG ...
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Carrier T--298 - page 7
ii T - - 298 T A BLE OF CONTE NTS - Conti nued 3.4 CEILI NG UNIT - DUCT ED SYSTEMS 3-4 ................................................... 3.4. 1 Filt er Removal 3-4 .................................................................... 3.4. 2 Ceiling Grill Rem oval 3-4 .............................................................. 3.4. 3 Contr ol Bo ...
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Carrier T--298 - page 8
iii T - - 298 T ABLE OF C ONTE NTS - Continue d 3.1 1 CHECK THERMOST A T O PERA T ION 3-16 ................................................... 3.1 1.1 T emper ature Display 3-16 ............................................................... 3.1 1.2 T imeguar d T imer 3-17 .................................................................. 3.1 1.3 C ...
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Carrier T--298 - page 9
iv T - - 298 LIST OF FIGURES Figur e 3-26 Cover Ass embly - Low Pr ofile 3-10 ....................................................... Figur e 3-27 Upper Scr oll Assembly Loc king T abs (b. ) & Sc rew Locations (c. ) 3-10 ......................... Figur e 3-28 Upper Scr oll Assembly K eeper T ab Release 3-10 ..................................... ...
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Carrier T--298 - page 10
T - - 298 1-1 SECTI ON 1 DESCRIPTION 1.1 I NTRODUCT ION This m anual cont ains servic e instruct ions and electrical data f or the Air V , Carr ier T ranspor t Air Conditioning’s Recreat ional V ehicle air condit ioning unit. The Ai rV uni ts are two piece systems, con sisting of the Upper Unit and the C eiling unit . T he Upper Unit c ontains th ...
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Carrier T--298 - page 11
T - - 298 1-2 T able 1- 1. M odel Cha rt UPPER UNIT (ROOF) Model N umbe r Part Numb er Vo l t a g e Amps Co lo r 11 5 V Standar d S y stem 99- - 00468 - - 00 1 15/ 1/60 12.8 White 1 1 5 V S t a n d a r d S y s t e m 68RV14102A 99- - 00468 - - 01 1 15/1/ 60 12.8 Ivor y 220 V Standar d S y stem 99- - 00468 - - 02 220/1/ 50 5.3 Cool Whi te 2 2 0 V S t ...
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Carrier T--298 - page 12
T - - 298 1-3 T able 1- 2 Additiona l Suppor t Manua ls MANUAL - - F ORM NO. EQUIPMENT COVERED TYP E OF MANUAL (For) P ART NO . 71LC6A54310 AirV 1 15 V olts - - F ree Blow (Cool O nly) Own er ’ s Gu ide 99- - 00469 - - 00 99- - 00469 - - 01 71LH6A54070 A irV 1 15 Volts - - F ree Blow (Heat - - Cool) Own er ’ s Gu ide 99- - 00469 - - 02 99- - 00 ...
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Carrier T--298 - page 13
T - - 298 1-4 1 2 3 4 1. Ceiling Panel As sembly 2. Contr ol Box Cover 3. Contr ol Assembly 4. Ceiling Gr ill Assembly Figure 1- 3 Ce iling U nit Compone nt Identific ation (Fre e - -Blow) ...
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Carrier T--298 - page 14
T - - 298 1-5 1 2 3 4 5 6 8 7 9 10 11 1. Co ver Assembly 2. Scr oll Assembly - - Upper 3. Condenser F an 4. Condenser Mot or 5. Evapor ator Mot or 6. Evapor ator Blower W heel 7. Condenser Coil 8. Scr oll Assembly - - Lower 9. Evapor ator Coil 10. C ompressor 1 1. Base Pan As sembly See Figur e 1-3 for Ceiling P ackage (F ree- - B low) Figure 1- 4 ...
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Carrier T--298 - page 15
T - - 298 1-6 1 2 3 4 5 6 7 8 9 10 11 12 1. T elesc oping Divider (3 differ ent sizes available) 2. Divider As sembly 3. Fr ame Panel, I nsulation As sembly 4. Contr ol Box Ass embly 5. Contr ol Box Cover 6. Suctio n Packing Assemb ly 7. Re mote Control Assemb ly 8. Re mote Control Bracke t Assemb ly 9. Filt er Assem blies (2) 10. PCB Cov er 1 1. P ...
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Carrier T--298 - page 16
T - - 298 1-7 1 2 3 4 5 SCHEMA TIC VIEW INST ALLED VIEW 3 2 1 1 4 5 SUPPL Y AIR RETURN AI R SUPPL Y AIR 1. V ehicle Duct Sy stem ( Connection) 2. T elesc oping Divider (3 differ ent sizes available) 3. Retur n Air Suct ion Area 4. Contr ol Box Ass embly 5. Supply A ir Discharge A rea Figure 1- 6 Duc ted Sys tem A ir Flow Arr angem ent ...
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Carrier T--298 - page 17
T - - 298 1-8 Serial Num ber of Ceiling Unit Serial num ber of Upper Unit Upper Unit Ceiling Uni t (Cov er Remov ed) Free Blow T ype Botto m V iew After In stal lati on (W ith Grille Rem oved) Ceiling Assem bly Fram e Serial Num ber of Ceiling Unit (Side of Contr ol Box) Botto m of Upper Unit Serial Num ber of Upper Unit Ducted T ype Figure 1- 7 Se ...
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Carrier T--298 - page 18
T - - 298 1-9 1.4 AirV SYSTEM COMPONENT SPECIFI - CA TIONS 1.4. 1 Refri gerant Ch arge Standar d - - High Capacity - - Heat Pump R- - 22 - - 15.9 Ounces Low Prof ile (All) R- - 22 - - 16.9 Ounces 1.4. 2 Comp ressor - - 1 15 V o lts, 60 Cycl es, 1 Phase a. L ocked Roto r Amp s - - Stand ard - - High Capaci ty - - Heat Pump 64.5 AM PS6 b. L ocked Ro ...
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Carrier T--298 - page 19
T - - 298 1-10 1.7 REF RIGERANT CY CLE - - HEA T PUMP STRAINER OUTDOOR COIL INDOOR COIL REVERSING V AL VE ACCUMUL A T OR COMPRESSOR CAPILLAR Y TUBE DISCHARGE SUCTION LIQU ID Fi gure 1 -9 Refrig erant F low Sch ematic - - Heat P ump - - ( Cool Mo de) 1.7. 1 Cool in g The cooling cycle is energi zed when the thermostat , located in t he ceiling unit, ...
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Carrier T--298 - page 20
T - - 298 1-1 1 COMPRESSOR ACCUMUL A T OR REVERSING V AL VE INDOOR COIL OUTDOOR COIL STRAINER CAPILLAR Y TUBE DISCHARGE SUCTION LIQU ID Figure 1-1 0 Re frige rant Flow Sc hem atic - - He at Pum p - - (Hea t Mode) 1.7. 2 Heatin g The heat ing cycle is energi zed when the thermostat, located in t he ceiling uni t, calls f or heat The system contr ols ...
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Carrier T--298 - page 21
T - - 298 2-1 SECTI ON 2 TROUBLESHOOTING For duc ted units , the gr ee n opera tion indica tor LE D (Se eFigur e 3 - 9) will flash if the re is a proble m. Re fer to T able 2- - 1 for dia gnostic infor mat ion. SYMP TOM AND PRO BABLE CAUSE PROBABL E REMEDY 2.1 NO PO WER TO UNIT 1. M aster swit ch off 2. Open circ uit breaker 3. Def ective wir ing 4 ...
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Carrier T--298 - page 22
T - - 298 2-2 SYSTEM AND PRO BABLE CAUSE PRO BABLE REME DY 2.6 CYCLES ON COMPRESSOR O VER LO AD 1. Def ective r un capacitor 2. Defec tive compr essor bearings or valv es 3. G reatly r estric ted evaporat or air , ic ed evaporator coil. 4. Low refriger ant charge 5. Evapor ator capillary r estric ted 6. Liquid line r estrict ed 7. Compr essor hot 8 ...
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Carrier T--298 - page 23
T - - 298 2-3 SYSTEM AND PRO BABLE CAUSE PRO BABLE REME DY 2.14 INADE QUA T E HEA T (FRE E - - BLO W HEA T O NL Y ) 1. No heat from heat st rip. 1. V eri fy AMP draw . ( 13 .8 AMP) V erif y resist ance through heat ing element. (9 O HM) Check bi- - met al swit ch. If open, replac e swit ch. 2.15 INADE QUA T E HEA T (HE A T - - PUMP ) NOT E: Allow u ...
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Carrier T--298 - page 24
T - - 298 2-4 T able 2 - - 1 Sys tem Se lf - -diagnostic s Function (D ucte d R emote ) Fl ashes Erro r Codes (Priority) Error Co nten ts (Malfunction) Disp lay Pat tern Allowed Mode s 2 1 ROO M AIR T HERM- ISTO R F AILURE 3sec . 3sec . 0.5 sec. (Twice ) F AN Mode 3 2 IND OOR COIL THERMISTOR F AIL- URE 3sec . 3sec. 0.5 sec (3 Ti m es ) FAN Mode FUR ...
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Carrier T--298 - page 25
T - - 298 3-1 SECTI ON 3 SERVICE AND MAINTENANCE 3.1 P REVENT A T IVE MAINTE NANCE Clean ing - - Clean ev aporator c oil and c ondenser coil. Hold flas hlight behind coil to s ee if all spaces are c lear . Dust acc umulation obst ructs or r educes airflow and result s in loss of cooling capacity . Both coils may be vacuum ed when dry . Coils may al ...
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Carrier T--298 - page 26
T - - 298 3-2 d. T o replace t he grill, place the grill up against the ceil- ing panel and align t he scr ew holes in t he grill wit h t he ceiling panel. e. Replac e 4 screws. Mount ing Screws Figure 3- 2 Ce iling Gr ill - - Fre e Blow 3.3 .3 Ce iling Pane l Rem ova l T o rem ove the ceiling panel (F igure 3- 3) do t he following: a. Rem ove the ...
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Carrier T--298 - page 27
T - - 298 3-3 3.3 .6 Indoor Ther most at Re mova l T o rem ove the indoor t hermost at (Figure 3-6) do the following: a. Rem ove ceiling grille. ( Refer t o paragraph 3.3. 2.) b. Rem ove 5 screws s ecuring the c ontrol assembly (it em 3, Figur e 1-3) to t he contr ol box cover . c. Remove t he indoor therm ostat knob by grabbing the outsi de edge o ...
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Carrier T--298 - page 28
T - - 298 3-4 3.4 CEI LING UNIT - - DUCT ED SYSTEMS 3.4. 1 Fi lter Remo val The f ilters ( Figure 3-9) are locat ed in the ceiling grill. T o remove t he filt ers, do t he following: a. G rasp the edge of t he filter at reces s in the end of the ceiling grill. b. P ull filt er complet ely out of the filt er slot. c. V ac uum filter or wash f ilter ...
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Carrier T--298 - page 29
T - - 298 3-5 1 15V AC 12V DC Fus e Upper Unit Connector s Furnace Wir es (blue) #1 #2 Fi gure 3 -12 Cont rol Bo x Assembly - - Du cted 3.4. 4 Main P CB Bo ard Removal T o r emove the Main PCB boar d (Figure 3-13) do t he following: a. Rem ove ceiling grill. Ref er to par agraph 3.4. 2. b. Rem ove three sc rews secur ing the PCB c over to the ducte ...
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Carrier T--298 - page 30
T - - 298 3-6 3.5. 2 Comp ressor Rep lacement Obs erve the sam e procedures f or rot ary compr essors as for recipro cating compre ssors. a. F ollow all safet y codes. Rem inder: use protec tive goggles, wor k glov es, and water soaked quenching clot h. b. Rem ove exterior cov er . refer t o par agraph 3.5. 1. Dis- connect all wiring f rom the c om ...
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Carrier T--298 - page 31
T - - 298 3-7 3.5. 4 Upp er Scrol l Assembl y Removal a. Remove ex terior cover ass embly . Ref er to paragraph 3.5. 1. b. Remove 4 sc rews securing upper scroll ass embly to the lower scroll assembly . ( See Figure 3- 18) c. G ently pr y 4 snap clips open and lif t the upper scroll assemb ly off o f the lo wer scroll assembly . d. Rev erse above p ...
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Carrier T--298 - page 32
T - - 298 3-8 Condenser F an Figure 3- 22 C ondense r Fan Re mova l 3.5. 6 Evap orator Bl ow er Wheel Ad ju stment o r Removal a. Rem ove exterior cover ass embly . Refer t o Ext erior Cover As sembly Removal inst ructions 3. 5.1 b. Remove c ontrol box assem bly . Refer t o Cont rol Box Ass embly Removal instr uctions 3. 5.3 c. Remove upper scroll ...
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Carrier T--298 - page 33
T - - 298 3-9 3.5.8 Capa citor T r oubleshoot ing W ARNI NG Dis connec t powe r to the A irV unit before checki ng t he capaci tor . T o t est capacit or to det ermine if good, open or short ed, an ohm met er can be used. T o determ ine a capacitor ’s capacit ance, a capacit or meter is requir ed. Capacitor s showing signs of leaks or bulging sho ...
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Carrier T--298 - page 34
T - - 298 3-10 3.6 SER VICE - - UPPER UNIT - - LOW PROFILE 3.6. 1 Exteri or Cover Remo val CAUTI ON Coi l fi ns are sharp . Use care w hen removi ng th e cover form t he base p an to avo id p er- sona l injury . T o rem ove the ext erior cover, do the f ollowing: a. B efore working on unit place t he m aster swit ch in the OF F posit ion and discon ...
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Carrier T--298 - page 35
T - - 298 3-1 1 Evapor ator Coil Condenser Coil Figure 3- 29 U pper Sc roll & Contr ol B ox Cover Remo ved 3.6 .3 Conde nser Fa n A ssembl y Removal T o rem ove condenser f an assembly , do the f ollowing: a. P erform s teps out lined in Section 3. 6.2. b. Depr ess and remove Ret aining Ring (See Figur e 3-30). c. Us ing both hands, caref ully ...
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Carrier T--298 - page 36
T - - 298 3-12 3.6 .4 Conde nser M otor Re mova l T o rem ove condenser f an motor, do the following: a. P erform s teps out lined in Section 3. 6.2. b. Rem ove (3) 13MM bolts ( See Figure 3- 31). c. Remov e (3) Gr ommets . Inspect , replace or reuse. d. Cut T ie- - Wraps & dis card ( 2 locations) . W hen re- assem bling, tie - - wrap at same 2 ...
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Carrier T--298 - page 37
T - - 298 3-13 NOT E Wh en reassemb lin g the b lo wer wheel o n to the mot or shaf t ensur e that the blower whee l is flush with the end of the motor shaf t (SeeFigure 3- 36) . h. Rev erse above procedur e for reas sembly . Wheel F lush Wit h Motor S haft Figure 3- 36 Ev apor ator B lower Whee l (Flush Wi th End Of Motor Shaft) NOT E When pla cin ...
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Carrier T--298 - page 38
T - - 298 3-14 a. Rem ove the batt eries f rom the r emote cont rol. b. Caref ully r emove t he r emote c over by ins erting a nar- row f lat object bet ween the cover and r emote body and prying apar t. c. Rem ove the bras s screw holding t he PCB in place. d. Car efully r emove t he PCB boar d from the rem ote body , making s ure the batt ery spr ...
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Carrier T--298 - page 39
T - - 298 3-15 3.7 THE RMOST A T INS T AL LA T ION AND ST ART - - UP INST RUCTI ONS (WALL MO UNTED) 3.7 .1 Introduc tion The t hermost at is a wall mount ed, low- - volt age ther mostat which maint ains room temper ature by contr olling the operat ion of a heating and air conditioning syst em. Bat teries are not r equired; tem perature and mode s e ...
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Carrier T--298 - page 40
T - - 298 3-16 NOT E If t he F AN butt on is pr essed again or if no butt on is pressed f or t wo minutes, t he thermos tat will exit t he configur ation mode and ret urn to nor - mal operation. T o re - - ent er t he configurat ion mode, t he F AN butt on must be press ed and held for 10 seconds again. While in t he configurat ion mode, t he f oll ...
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Carrier T--298 - page 41
T - - 298 3-17 3.1 1. 2 Timeg uard Timer A 3 - - m inute tim eguard is built into t he t hermost at immediat ely upon power up, and any t ime the compr essor (output “Y ”) turns off . The compres sor will not t urn on unt il the t imeguard has expir ed. Pr essing UP and F AN but tons sim ultaneously will override the timeguard f or 1 cycle. 3.1 ...
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Carrier T--298 - page 42
T - - 298 3-18 POW ERBOX ASSEMBL Y UPPER UNIT 12 34 2 1 12 3 4 1 2 3 4 5 1 2 L N2 N1 W Y GH GL C TB Y GH GL R C COOL ( Compressor ) F AN (Hi gh) F AN (Low) 12V DC LowVoltage Power Supply CEILING UNI T FURNACE + 12VDC 12 VDC (Gnd) Motor C omp. 1 15V AC Hig h V olt age Powe r Supply Fac tory Wir ing Field Wiring THERMOST A T J Blue Blue Figure 3-4 1 ...
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Carrier T--298 - page 43
T - - 298 4-1 SECTI ON 4 WIRING SCHEMA TICS 4.1 I NTRODUCT ION This S ection cont ains wiring sc hematics f or the A irV units . Figur e 4- - 1 is t he schemat ic for t he standar d upper unit ass embly and it is applic able to all st andard units. Figur e 4- - 2 is t he schemat ic for the Low P rofile upper unit assem bly . Figur e 4- - 3 is t he ...
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Carrier T--298 - page 44
T - - 298 4-2 2P GRN/YEL ORN WHT WHT ASM PLUG CONNECTS T O UPPER UNIT . SEE DIAGR AM SUPPLIED WITH UPPER UN IT FOR ADDITION AL WIRING. 4P 2P 1 1 2 3 4 2 { ASW O (OFF) I( O N ) 2 2- -1 SWITCH POSITION CONT ACTS MADE HIGH FAN LOW F AN OFF LOW COOL 1- -4 . 1- -6 1- -2 . 1- -6 NONE 1- -2 . 1- -6 . 1- -8 1- -4 . 1- -6 . 1- -8 HIGH COOL ASM : AIR SWEEP M ...
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Carrier T--298 - page 45
T - - 298 4-3 CONTROL BOX EV AP . RVC 2P 4P 2P 2P 4P C F H BLK BLU BLK BLU WHT WHT BRN BLK BLK BLK(BL U) GRN/YEL GRN/YEL GRN/YEL WHT WHT WHT BRN BRN 1 (3) 2 CAP ACI TOR YEL RED RED OLP (IF U SED) BLU BLU RED PTC COMPRESSOR R C S FREEZE SWITCH FA N M O T O R 1 2 3 4 1 2 1 2 1 2 3 4 1 2 3 4 1 2 1 2 OLP: OVERLOAD PR OTECTION PTC: ST ART THERMISTER RVC ...
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Carrier T--298 - page 46
T - - 298 4-4 LEGE ND RVC PLUG CONNECT S T O CEIL ING UNIT . SEE DIAGR AM SUPPLIED WITH CEIL ING UNIT FOR A DDITIONAL WIRI NG. CN CN C F H OLP :O VERLO AD PROT ECTO R PTC :ST ART TH ERMISTO R RVC :REVERSI NG V AL VE COI L CN :HOUSING CONNECTOR ODA Th : OUTDOOR A IR TH ERM ISTOR ODC Th : OUTDOOR COI L TH ERM ISTOR BLK BLK BLK(BLU) CONTROL BOX EV AP ...
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Carrier T--298 - page 47
T - - 298 4-5 Figure 4 - - 1 0 Ce iling U nit - - W a ll The rmos tat - - Ducte d & Fr ee Blow 4.2 W ALL MOUNTED THERMOST A T S For proper wiring of W all Mounted T hermost ats as an ac cessory , ref er to F igure 3-40 (Wall Thermost at W iring Diagram - - Cool O nly Model) or F igure 3-41 (Wall Thermos tat W iring Diagram - - Heat /Cool Model) ...
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Carrier T--298 - page 48
Index - 1 T - - 298 INDEX A Air Handling Sys tem , 3-8 Air S weep Removal, 3-3 Air S weep Switch , 3-2 C Capacitor T est ing, 3-9 Capacitor T es ting and Replacement , 3-9 Ceiling Grill - - Duc ted, 3- 4 Ceiling Grill - - F ree Blow , 3- 1 Ceiling Panel - - Fr ee Blow , 3-2 CEILING UNIT - - DUCTED SYSTEMS, 3-4 CEILI NG UNIT - - FRE E BLO W , 3-1 Cl ...
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Carrier T--298 - page 49
© 2006 Carrier Corporatio n D Printed in U. S. A. 0606 Carrier Transport A ir Conditi oning 50 Grumbac her Road Y ork P A 17402 USA T el : 1 - - 800 - -673 - -2431 Fax : 1 - - 717 - -764 - - 0401 A mem ber of the Uni ted T ec hnologies Corporati on famil y . S tock s ymbol UT X Carr ier T rans icold D ivis ion, Carr ier Corporation Transport A ir ...
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