Service Manual - Carrier

1 40 MAQHigh Wall Ductless SystemSizes 09 to 36 Service ManualTABLE OF CONTENTSPAGESAFETY NUMBER CYCLE EVACUATION AND UNIT DIAGNOSTIC AND CONSIDERATIONSI nstalling, starting up, and servicing air conditioning equipmentcan be hazardous due to system pressures, electrical components,and equipment location (roofs, elevated structures, etc.).Only trained, qualified installers and Service mechanics shouldinstall, start up, and Service this personnel can perform basic maintenance functions suchas cleaning coils. All other operations should be performed bytrained Service working on the equipment, observe precautions in theliterature and on tags, stickers, and labels attached to all safety codes. Wear safety glasses and work gloves. Keepquenching cloth and fire extinguisher nearby when brazing.

2 Usecare in handling, rigging, and setting bulky this Manual thoroughly and follow all warnings or cautionsincluded in literature and attached to the unit. Consult local buildingcodes and National Electrical Code (NEC) for special safety information. This is the safety alert symbol ! !.When you see this symbol on the unit and in instructions or manuals,be alert to the potential for personal injury. Understand these signalwords: DANGER, WARNING, and words are used with the safety alert symbol. DANGER identifies the most serious hazards which will result in severepersonal injury or death. WARNING signifies hazards whichcould result in personal injury or death. CAUTION is used toidentify unsafe practices which may result in minor personal injuryor product and property damage. NOTE is used to highlightsuggestions which will result in enhanced installation, reliability, oroperation.!WARNINGELECTRICAL SHOCK HAZARDF ailure to follow this warning could result in personalinjury or installing, modifying, or servicing system, mainelectrical disconnect switch must be in the OFFposition.

3 There may be more than 1 disconnect out and tag switch with a suitable warning HAZARDF ailure to follow this warning couldresult in death, serious personal injury,and/or property use air or gases containingoxygen for leak testing or operatingrefrigerant compressors. Pressurizedmixtures of air or gases containingoxygen can lead to an explosion.!WARNINGCAUTION!EQUIPMENT DAMAGE HAZARDF ailure to follow this caution may result in equipmentdamage or improper not bury more than 36 in. (914 mm) of refrigerant pipein the ground. If any section of pipe is buried, there must bea 6 in. (152 mm) vertical rise to the valve connections onthe outdoor units. If more than the recommended length isburied, refrigerant may migrate to the cooler buried sectionduring extended periods of system shutdown. This causesrefrigerant slugging and could possibly damage thecompressor at start Service Manual provides the necessary information to Service ,repair, and maintain the indoor units.

4 Section 2 of this Manual has anappendix with data required to perform troubleshooting. Use the Tableof Contents to locate a desired NUMBER NOMENCLATUREST able 1 Unit SizesSYSTEM TONSVOLTAGE/PH/HZINDOOR MODEL9115/1/6040 MAQB09B--11240 MAQB12B--19208-230/1/6040 MAQB09B--31240 MAQB12B--31840 MAQB18B--32440 MAQB24B--33040 MAQB30B--33640 MAQB36B--3 BQBB = ALL MODELSSYSTEM TYPEQ = HEAT PUMPNOT USEDINDOOR UNIT40MA30940 = FAN COIL UNITMA = MODELVOLTAGE1 =115-1-603 = 208/230-1-60 NOMINAL CAPACITY09 - 3/4 TON12 - 1 TON18 - 1-1/2 TONS 24 - 2 TONS 30 - 2 -1/2 TONS36 - 3 TONSINDOOR FAN COIL TYPEB = HIGH WALL- -0116 Week of ManufactureYear of Manufacture10001 Sequential Serial NumberVV = ALL MODELSUse of the AHRI CertifiedTM Mark indicates amanufacturer s participation in the program For verification of certification for individual products, go to 3 SPECIFICATIONST able 2 SpecificationsHEAT PUMPS ystemSIZE91291218243036 Indoor Model40 MAQB09B--140 MAQB12B--140 MAQB09B--340 MAQB12B--340 MAQB18B--340 MAQB24B--340 MAQB30B--340 MAQB36B--3 ElectricalVoltage,Phase.

5 CycleV/Ph/Hz115-1-60115-1-60208/230-1-60 208/230-1-60208/230-1-60208/230-1-60208/ 230-1-60208/230-1-60 PowerSupplyIndoor unit powered from outdoor RemoteController ( F/ CConvertible)StandardStandardStandardSta ndardStandardStandardStandardStandardWir ed RemoteController ( F/ CConvertible)OptionalOptionalOptionalOpt ionalOptionalOptionalOptionalOptionalOpe ratingRangeCoolingIndoor DBMin -Max F( C)63~ 86 (17~ 30)63~ 86 (17~ 30)63~ 86 (17~ 30)63~ 86 (17~ 30)63~ 86 (17~ 30)63~ 86 (17~ 30)63~ 86 (17~ 30)63~ 86 (17~ 30)HeatingIndoor DBMin -Max F( C)32~ 86 (0~ 30)32~ 86 (0~ 30)32~ 86 (0~ 30)32~ 86 (0~ 30)32~ 86 (0~ 30)32~ 86 (0~ 30)32~ 86 (0~ 30)32~ 86 (0~ 30)PipingPipeConnectionSize -Liquidin (mm)1/4 ( )1/4 ( )1/4 ( )1/4 ( )1/4 ( )3/8 ( )3/8 ( )3/8 ( )PipeConnectionSize -Suctionin (mm)3/8 ( )1/2 ( )3/8 ( )1/2 ( )1/2 ( )5/8 (16)5/8 (16)5/8 (16)IndoorCoilFace Area(sq. ft.)Sq. Rows22222333 Fins per inch2020202020181818 Circuits33334777 IndoorUnit Widthin (mm) (835) (835) (835) (835) (990) (1186) (1186) (1186)Unit Heightin (mm) (280) (280) (280) (280) (315) (343) (343) (343)Unit Depthin (mm) (198) (198) (198) (198) (218) (258) (258) (258)Net Weightlbs (kg) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( )Fan Speeds44444444 Airflow (lowestto highest)CFM210/290/360/380210/300/360/38 0210/290/360/380210/300/360/380310/450/6 50/680520/620/780/870520/620/780/870520/ 620/780/870 SoundPressure(lowest tohighest)dB(A)27/34/4227/34/4227/34/422 7/34/4233/40/4639/45/5039/45/5039/45/50 Air ThrowDataft (m)23 (7)23 (7)23 (7)23 (7)30 (9)36 (11)36 (11)36 (11)Performance may vary based on the outdoor unit matched to.

6 See Table 3 for compatible outdoor - Seasonal Energy Efficiency RatioEER - Energy Efficiency RatioMCA - Minimum Circuit AmpsMOCP - Max. Over-Current ProtectionCOMPATIBILITYT able 3 CompatibilityINDOOR UNIT40 MAQB09B--140 MAQB12B--140 MAQB09B--340 MAQB12B--340 MAQB18B--340 MAQB24B--340 MAQB30B--340 MAQB36B--3 OUTDOOR UNITSINGLE ZONE38 MAQB09---138 MAQB12---138 MAQB09---338 MAQB12---338 MAQB18---338 MAQB24---338 MAQB30---338 MAQB09R--138 MAQB12R--138 MAQB09R--338 MAQB12R--338 MAQB18R--338 MAQB24R--338 MAQB30R--338 MAQB36R--3 OUTDOOR UNITMULTI-ZONE38 MGQC18---338 MGQD27---338 MGQF36---338 MGQF48---338 MGRQ18B--338 MGRQ24C--338 MGRQ30D--338 MGRQ36D--338 MGRQ48E--34 DIMENSIONST able 4 DimensionsHIGH WALL UNIT SIZE9K12K9K12K18K24K30K36 KVoltage(115V)(115V)(208/230V)(208/230V) (208/230V)(208/230V)(208/230V)(208/230V) HeightIn (mm) (280) (280) (280) (280) (315) (343) (343) (343)WidthIn (mm) (835) (835) (835) (835) (990) (1186) (1186) (1186)DepthIn (mm) (198) (198) (198) (198) (218) (258) (258) (258)Weight-NetLbs (kg) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( )Fig.

7 1 Indoor UnitsCLEARANCES6" ( ) "( ) '5"( )min.( )CEILINGFLOORFig. 2 Indoor Unit Clearance5 ELECTRICAL DATAT able 5 Electrical Data Indoor High WallHIGH WALLUNIT SIZEINDOOR FANMAX FUSE CB to outdoor unit installation instructions Indoor unit powered by the outdoor *Permissible limits of the voltage range at which the unit will operate - Full Load AmpsWIRINGAll wires must be sized per NEC (National Electrical Code) orCEC (Canadian Electrical Code) and local codes. Use the ElectricalData table MCA (minimum circuit amps) and MOCP (maximumover current protection) to correctly size the wires and thedisconnect fuse or breakers the caution note, only stranded copper conductors with a 600volt rating and double insulated copper wire must be used. The useof BX cable is not Connection Method for Power andCommunication Wiring Power and Communication Wiring:The main power is supplied to the outdoor unit. The field supplied14/3 power/communication wiring from the outdoor unit to theindoor unit consists of four (4) wires and provides the power forthe indoor unit.

8 Two wires are high voltage AC power, one iscommunication wiring and the other is a ground Connection Method for Power andCommunication Wiring (To minimize communicationwiring interference)Power Wiring:The main power is supplied to the outdoor unit. The field suppliedpower wiring from the outdoor unit to the indoor unit consists ofthree (3) wires and provides the power for the indoor unit. Twowires are high voltage AC power and one is a ground wire. Tominimize voltage drop, the factory recommended wire size is 14/2stranded with a Wiring:A separate shielded stranded copper conductor only, with a 600volt rating and double insulated copper wire, must be used as thecommunication wire from the outdoor unit to the indoor use a separate shielded 16GA stranded control !EQUIPMENT DAMAGE HAZARDF ailure to follow this caution may result in equipmentdamage or improper should be sized based on NEC and local copper conductors only with a minimum 600 volt rating and double insulated copper !

9 EQUIPMENT DAMAGE HAZARDF ailure to follow this caution may result in equipment damageor improper sure to comply with local codes while running wire fromthe indoor unit to the outdoor wire must be connected firmly. Loose wiring maycause the terminal to overheat or result in unit fire hazard may also exist. Therefore, ensure all wiring istightly wire should be allowed to touch the refrigerant tubing,compressor or any moving means must be provided and shall be locatedwithin sight and readily accessible from the air cable with conduit shall be routed through a holein the conduit DIAGRAMSFig. 3 115 VFig. 4 208 230 VNotes: 1. Do not use thermostat wire for any connection between indoor and outdoor All connections between indoor and outdoor units must be as shown. The connections are sensitive to polarity and will result in a fault DIAGRAMSINDOOR WIRING DIAGRAM65220 7(03(5$785( 6(16253,3( 7(03(5$785( 6(16256:,1* 02725 MCN5 YELLOWRED ,1 )$1M5CN4 NCN11CN16&1 &1 L-INCN2P_1 BLUE(BLACK)INDOOR UNITOUTDOOR UNITJX1Y/GLNS',63/$< %2$5'&1 $8(7) &1 Wire Contoller OPTIONALWi-FiContollerOPTIONAL&1 &1 Fig.))))))))

10 5 Wiring Diagram Sizes 09 12 (115V)Table 6 INDOOR UNIT CONTROL BOARDINPUT or OUTPUT VALUEL_INPower Voltage: AC115 VCN11 Power Voltage: AC115 VCN16 Relative to the N terminal voltage: DC 24 VCN15 Maximum voltage: DC5 VCN4 Indoor fan interface, maximum voltage: DC310 VCN5 Stepper motor interface, maximum voltage between the lines: DC12VP_1 GroundCN8 Room temperature sensor interface, maximum voltage: DC5 VCN9 Pipe temperature sensor interface, maximum voltage: DC5 VCN10 ADisplay interface,maximum voltage between the lines: DC5V8 WIRING DIAGRAMS (CONT)INDOOR WIRING DIAGRAM65220 7(03(5$785( 6(16253,3( 7(03(5$785( 6(16256:,1* 02725 MCN5 YELLOWRED ,1 )$1M5CN4 NCN11CN16&1 &1 L-INCN2P_1 BLUE(BLACK)INDOOR UNITOUTDOOR UNITJX1Y/GL1L2S',63/$< %2$5'&1 $8(7) &1 Wire Contoller OPTIONALWi-FiContollerOPTIONAL&1 &1 Fig. 6 Wiring Diagram Sizes 09 36 (208 230V)Table 7 INDOOR UNIT CONTROL BOARDINPUT or OUTPUT VALUEL_INPower Voltage: AC230 VCN11 Power Voltage: AC230 VCN16 Relative to the N terminal voltage: DC24 VCN15 Maximum voltage: DC5 VCN4 Indoor fan interface, maximum voltage: DC310 VCN5 Stepper motor interface, maximum voltage between the lines: DC12VP_1 GroundCN8 Room temperature sensor interface, maximum voltage: DC5 VCN9 Pipe temperature sensor interface, maximum voltage: DC5 VCN10 ADisplay interface,maximum voltage between the lines: DC5V9 REFRIGERATION CYCLE DIAGRAMSFig.))))))))