Daikin ComfortNet DX18TC Series Service Instructions Manual Download

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PRODUCT IDENTIFICATION

ComfortNet

™

D X 16 T C 024 1

3,4

7,8.9

11,12

Brand

D - Daikin brand

Major/Minor Revisions

Type

AC- R-410A

1 - 208/230V Single-Phase 60 Hz

3 - 208/230V Three-Phase 60 Hz

4 - 460V Three-Phase 60 Hz

SEER

16 - 16 SEER

Nominal Capacity

024 - 2 Tons

Compressor

036 - 3 Tons

Single Stage

048 - 4 Tons

Two Stage

060 - 5 Tons

Communication Feature

4-Wire Communication Ready

HP R-410A

Engineering

Voltage

Summary of Contents for ComfortNet DX18TC Series

Page 1: ...responsibility for property damage or personal injury due to improper service procedures or services performed by an unqualified person Copyright 2015 Daikin Manufacturing Company L P ComfortNet DX16...

Page 2: ...ERTY DAMAGE PERSONAL INJURY OR DEATH DO NOT STORE COMBUSTIBLE MATERIALS OR USE GASOLINE OR OTHER FLAMMABLE LIQUIDS OR VAPORS IN THE VICINITY OF THIS APPLIANCE To locate an authorized servicer please c...

Page 3: ...r proper servicing WARNING REFRIGERANTS ARE HEAVIER THAN AIR THEY CAN PUSH OUT THE OXYGEN IN YOUR LUNGS OR IN ANY ENCLOSED SPACE TO AVOID POSSIBLE DIFFICULTY IN BREATHING OR DEATH NEVER PURGE REFRIGER...

Page 4: ...nor Revisions Type X AC R 410A 1 208 230V Single Phase 60 Hz Z 3 208 230V Three Phase 60 Hz 4 460V Three Phase 60 Hz SEER 16 16 SEER Nominal Capacity 024 2 Tons Compressor 036 3 Tons S Single Stage 04...

Page 5: ...or S Multi Position EEM Motor Electrical W Wall Mount PSC EEM Motor 1 208 240V 1 Phase 60 Hz Cabinet Finish U Unpainted B 17 1 2 Wide P Painted C 21 Wide N Uncased D 24 1 2 Wide Expansion Device F Flo...

Page 6: ...inet B Fits 17 1 2 Furnace Cabinet C Fits 21 Furnace Cabinet D Fits 24 1 2 Furnace Cabinet N Does Not Apply Horizontal Slab Coils Cabinet Finish U Unpainted 1 1 2 2 Tons P Painted 2 1 2 Tons N Unpaint...

Page 7: ...9 Brand MB Modular Blower 1 208 230V 60Hz 1 PH Type A First Series V Communication Feature A No Circuit Breaker C 4 Wire Communication Ready B Circuit Breaker Airflow 12 00 No Heat 16 20 Electrical De...

Page 8: ...ication V Nominal Capacity 1 208 240V 1 Phase 60 Hz 18 1 1 2 Tons 24 2 Tons 30 2 1 2 Tons 36 3 Tons 42 3 1 2 Tons 48 4 Tons 60 5 Tons C ComfortNet TM Compatible Cabinet Finish P Painted Expansion Devi...

Page 9: ...nsing units with R 410A communicating models Model Rev Description DX18TC 024 060 1AA Introduces Daikin brand 2 stage 18 SEER condensing units with R 410A communicating models DX16TC DAIKIN BRAND X AC...

Page 10: ...heat pump units with SanHau reversing valves Model Rev Description DZ18TC 024 060 1AA Introduces Daikin brand 2 stage 18 SEER heat pump units with R 410A communicating models DZ18TC 024 060 1AB Introd...

Page 11: ...al communicating indoor blower motor DV24PTCB14AB DV 36 48 PTCC14AB DV 42 60 PTCD14AB Updating the shared data information for all DV PTC communicating models DV24PTCB14AC DV30PTCC14AB Heater Kit airf...

Page 12: ...MBVC2000AA 1AB Replaced Emerson motors 013M00111 and 013M00112 with motors013M00270 and 013M0071 respectively MBVC1200AA 1AC MBVC1600AA 1AC MBVC2000AA 1AC Replaced insulation with 0 75 Quiet Flex Ins...

Page 13: ...mance improvement from 2 row to 3 row CAPF 6DA Replaced existing copper coils and other associated parts with aluminum components CAPF 6DB Drain pan material changed CAPF C INDOOR COIL A UPFLOW DOWNFL...

Page 14: ...released in place of the Wavy Fin Rows reduced by one where applicable CSCF1824N6BB CSCF3036N6BB CSCF3642N6CB CSCF4860N6CB Drain pan material changed CSCF1824N6CA CSCF3036N6CA CSCF3642N6CA CSCF4860N6...

Page 15: ...ications where ambient temperature fall below 0 F with 50 or higher relat i ve humidity Model Description DZ16TC024 DZ16TC036 DZ16TC048 DZ16TC060 DZ18TC036 DZ18TC048 DZ18TC060 ABK 20 Anchor Bracket Ki...

Page 16: ...equiring afieldinstalledaccessfitting TAILPIECE 3 8 SWEAT 7 8 NUT DISTRIBUTOR BODY PISTON SEAL EVAPORATOR COIL 1 4 FLARE CONNECTION BULB SUCTION LINE EXPANSION VALVE REMOVE BEFORE INSTALLING EXPANSION...

Page 17: ...17 ACCESSORIES FSK01A FREEZETHERMOSTAT KIT Install Line Thermostat Here Install Line Thermostat Here Wire Nut Wire Nut Y Y B l a c k Black Wire Nut Y Wire Nut Y Black Black...

Page 18: ...R05 C HKR 06 HKR 08 C HKR 10 C HKA 15C HKA 20C HKR3 15 HKR3 20A M BVC1200AA 1 X X X X X X M BVC1600AA 1 X X X X X X M BVC2000AA 1 X X X X X X X Allowable combinations Circuit1 Single Phase for Air Han...

Page 19: ...1 below 1 Set Heater Kit dip switches 9 10 and 11 to 6kW setting 9 ON 10 OFF 11 ON to obtain 840 CFM 2 This heater kit can only be used for 1000 CFM or higher applications 3 This heater kit can only b...

Page 20: ...HKSC20DA X X X HKSC20DB X X X HKSCX20XF X X X X X HKSC25DC X X Revision level that may or may not be designated Refer to the minimum airflow requirements for each of the heat kits DVPTC 3 5 6 8 10 15...

Page 21: ...equired discharge thermostat Ultratech Series scroll compressors use POE or polyolester oil which is NOT compatible with mineral oil based lubricants like 3GS POE oil must be used if additional oil is...

Page 22: ...g assembly This plug is connected to the Communicating Unitary Control PCB UC PCB which contains a full wave rectifier to supply direct current to the unloader coil COILS AND BLOWER COILS MBVC blower...

Page 23: ...ls line voltage monitors Comfort Alert or CoreSense Module dependent upon which module you are using two speed condenser fan relays and the Active Protection com ponent of enabled thermostats The cont...

Page 24: ...one Oncethevaporisfullyliquefied itcontinuestogiveup heat which subcools the liquid and it is ready to repeat the cycle HEATING The heating portion of the refrigeration cycle is similar to the cooling...

Page 25: ...ntheUC PCB Inacommunicatingsystem thedefrosttimingperiods can also be selected in the communicating thermostat user menu Duringoperation ifthecoiltemperatureislowenough approximately 31 F the micropor...

Page 26: ...door Coil Accumulator Bi Flow Filter Dryer Outdoor Coil Thermostatic Expansion Valve Check Valve Reversing Valve De Energized Indoor Coil Accumulator Bi Flow Filter Dryer Outdoor Coil Thermostatic Exp...

Page 27: ...LVE CHECKVALVEASSEMBLY INHEATINGOPERATION Most expansion valves used in current DaikinBrand Heat Pump products use an internally checked expansion valve This type of expansion valve does not require a...

Page 28: ...16 Improper Cooling Anticipator Check Resistance of Anticipator S 3B Shortage of Refrigerant Test For Leaks Add Refrigerant S 101 103 Restricted Liquid Line Remove Restriction Replace Restricted Part...

Page 29: ...69 S 17D OPERATION TEST 69 S 18 TESTING CRANKCASE HEATER OPTIONAL ITEM 70 S 21 CHECKING REVERSING VALVEAND SOLENOID 70 S 24 TESTING DEFROST CONTROL 70 S 26 TESTING TEMPERATURE SENSORS COMFORTNET READY...

Page 30: ...oltage Unit Supply Voltage Voltage Min Max 208 230 197 253 460 414 506 NOTE When operating electric heaters on voltages other than 240 volts refer to the System Operation section on electric heaters t...

Page 31: ...ebelowliststhenominalhighandlowstageairflowforthe ComfortNet air conditioners and heat pumps High Low High Low SZC160241 800 600 800 600 SZC160361 1200 800 1200 800 SZC160481 1550 1100 1550 1100 SZC16...

Page 32: ...mmon of the outdoor transformer should be grounded to the equipment earth ground Not as secure as the third wire but it insures there is not a floating C 24v common The transformer is included with th...

Page 33: ...pid Flashing Normal network traffic Control is talking on network as expected None None On Solid Data 1 Data 2 miss wire Data 1 and data 2 wires reversed at air handler thermostat or ComfortNet compat...

Page 34: ...OR b5 BLOWER MOTOR ROTOR LOCKED b6 OVER UNDER VOLTAGE TRIP OR OVER TEMPERATURE TRIP b7 INCOMPLETE PARAMETER SENT TO MOTOR b9 LOW INDOOR AIRFLOW C1 LOW STAGE COOL LEGACY MODE ONLY C2 HIGH STAGE COOL LE...

Page 35: ...removing memory card x Error code will be cleared once data is loaded x Electric heat airflow is higher than expected on a call for W1 or Auxiliary Emergency heat x Integrated control module LED displ...

Page 36: ...removed after data is loaded x Turn power OFF before removing memory card x Error code will be cleared once data is loaded x Operation different than expected or no operation x Integrated control mod...

Page 37: ...TOR MISMATCH b2 x Incorrect circulator blower motor in air handler x Incorrect shared data set in integrated control module x Verify circulator blower motor horse power is the same specified for the s...

Page 38: ...ir handler x High ambient temperatures x Check power to air handler Verify line voltage to blower is within the range specified on the air handler rating plate x See Installation Instructions for inst...

Page 39: ...r kits specified in shared data set HTR TOO SMALL EC x Heater kit selected via dipswitches is too small for heater kits in shared data set x Verify electric heat dipswitch settings x Verify the instal...

Page 40: ...er message d0 x Data not yet on network NO NET DATA d0 x Air handler blower does not contain any shared data x Populate shared data set using memory card x Turn power OFF prior to repair x Use memory...

Page 41: ...H b2 x Incorrect circulator blower motor in air handler blower x Incorrect shared data set in integrated control module x Verify circulator blower motor horse power is the same specified for the speci...

Page 42: ...dler blower Verify line voltage to blower is within the range specified on the air handler blower rating plate x See Installation Instructions for installation requirements x Turn power OFF prior to r...

Page 43: ...me delays are used in electric heaters to sequence in multiple electric heaters WARNING Disconnect ALL power before servicing 1 Tag and disconnect all wires from male spade connec tions of relay 2 Usi...

Page 44: ...t ALL power before servicing or installing Multiple power sources may be present Failure to do so may cause property damage personal injury or death 1 Disconnect the motor leads from 6 circuit fan mot...

Page 45: ...m faults If a problem is detected LED indicators flash the proper alert codes to help you quickly pinpointtheproblem The diagnostic tables on following pages provide detailed informationregardingthesy...

Page 46: ...indicated code ON 1 Flash OFF ON if call present OFF if no call Low Pressure CO Trip LPS OPEN 01 Low refrigerant charge Restriction in liquid line Indoor blower m otor failure Indoor therm ostat set...

Page 47: ...eeded Check outdoor fan motor capacitor replace as needed Turn power OFF prior to repair Replace with correct replacement part s Compressor and outdoor fan are off Low pressure switch trip 3 times wit...

Page 48: ...ck compressor wiring repair replace as needed Turn power OFF prior to repair Fault will clear afte r 1 normal cycle Fault may be cleared by cycling 24VAC to control Replace with correct replacement pa...

Page 49: ...ON ON if call present OFF if no call Open Run Circuit Lockout OPEN RUN LOCK 07 Compressor run winding is open Compressor not properly wired to control Faulty compressor wiring Check compressor repair...

Page 50: ...ce if needed Turn power OFF prior to repair Fault will clear if secondary voltage rises above 21VAC Replace with correct replacem ent part s Com pressor is off Integrated control m odule diagnostic st...

Page 51: ...Low Cool C 2 High Cool d F Defrost d t Max Defrost Time d E Forced Defrost d 0 Data not yet on Netw ork d 1 Invalid Data on Netw ork d 2 SystemMis Match d 3 Configuration Mis Match d 4 Invalid Memory...

Page 52: ...de E E s Board mis operation 4 2 FAULT EE s Compressor relay contacts welded s Replace control s Turn power OFF prior to repair s Replace with correct replacement part s Air conditioner heat pump fail...

Page 53: ...ta is invalid for the integrated control module s Verify system type communicating or legacy s Populate correct shared data using memory card s Wire system as legacy system s Turn power OFF prior to r...

Page 54: ...ry card for your speci c model s Insert memory card BEFORE turning power EMORY CARD MAY be removed after data is loaded Turn power OFF before removing memory card s Error code will be cleared once dat...

Page 55: ...motor wiring repair replace as needed Check outdoor fan motor capacitor replace as needed Turn power OFF prior to repair Fault will clear after 4 consecutive normal cycles Fault may be cleared by cycl...

Page 56: ...is out of range Turn power OFF prior to repair Must clear fault by cycling 24VAC to control Replace with correct replacement part s Compressor and outdoor f or greater than 4 hours Low pressure and hi...

Page 57: ...wer OFF prior to repair Fault will clear after 1 normal cycle Fault may be cycling 24VAC to control Replace with correct replacement part s Compressor and outdoor f Low pressure and high pressure swit...

Page 58: ...ondary voltage rises above 21VAC Replace with correct replacement part s Integrated control module diagnostic status LED display shows the indicated code P 0 Comp Protector Open displayed displayed th...

Page 59: ...onditioners It will automatically cut in close at approxi mately50PSIGforheatpumpsand95PSIGforaircondition ers Test for continuity using a VOM and if not as above replace the control S 14 CHECKING HIG...

Page 60: ...replaced S 16G CHECKING EMERSON ULTRATECHTM ECM MOTORS DESCRIPTION The DVPTC and MBVC models utilize an Emerson 4 wire variable speed ECM blower motor The ECM blower motor provides constant CFM Themot...

Page 61: ...oleitherhasanopenfuseorisnotproperly connected to a 24VAC source 8 The green LED on the diagnostic tool will blink indicating communications between the tool and motor See table belowforindicationsoft...

Page 62: ...OTE Motorcontainscapacitorsthatcanholdachargefor severalminutesafterdisconnectingpower Wait5minutes after removing power to allow capacitors to discharge 2 Disconnect the motor control harness and mot...

Page 63: ...ectricheaterkitsize Adjustments are made by selecting the appropriate ON OFF combinations of the dipswitches The dipswitches along with their functions are shown in the figures below Cooling Airflow D...

Page 64: ...ofiles above Set switches 5 and 6 to the approriate ON OFF positions A 60 sec 100 B ON OFF ON OFF ON OFF TAP 1 2 3 4 5 6 To set airflow D 30 sec 50 7 5 min 82 30 sec 50 A OFF OFF OFF OFF OFF OFF 0140A...

Page 65: ...OFF 10 1000 1000 1200 OFF ON ON 15 1400 1500 1500 OFF ON OFF 20 NR NR 2000 OFF OFF ON 21 NR NR NR ON ON ON Factory setting Locate the blower speed selection DIP switches on the integrated control modu...

Page 66: ...omfortNet System Airflow Consideration section for details 2 Airflow blink codes are approximations of actual airflow Profiles Pre Run Short Run OFF Delay C OFF ON OFF ON OFF ON C 7 5 min 82 60 sec 10...

Page 67: ...ts shall be set to 1300 cfm speed tap of ON OFF ON For match up with a 3 5 ton outdoor unit Heater kit application shall not exceed 20 kW Airflow for 5 kW up to 20 kW heater kits shall be set to 1500...

Page 68: ...amperage and winding temperature High motor tem perature or amperage heats the disc causing it to open breaking the common circuit within the compressor on single phase units Heatgeneratedwithinthecom...

Page 69: ...lug 1 Operate the system and measure compressor amper age Cycletheunloaderonandoffattensecondintervals by appling and removing Y2 voltage to the module Wait five seconds after power is applied to Y2 b...

Page 70: ...ted back to the suction side resulting in excessively high suction pressure An increase inthesuctionlinetemperaturethroughthereversingvalvecan also be measured Check operation of the valve by starting...

Page 71: ...wer motor control and control of up to two electric heat sequencers The control has thermostat inputs for up to two stages of cooling two stages of electric heat reversing valve and dehumidification C...

Page 72: ...inesandbetweeneachdata line and common may be used to determine if the network isoperatingproperly Do the following to measure the voltages on the communi cations data lines WARNING Line Voltage now p...

Page 73: ...ystem commands are routed from the componentthroughthenetworktotheappropriatedestination component NOTE Theindividualsubsystemswillceaseoperationifthe request for operation is NOT refreshed after 5 mi...

Page 74: ...ed by the heat pump The outdoor air temperature is aquired from the outdoor air temperature OAT sensor included with the ASZC DSZC heat pump models Faults with the sensor will affect heating operation...

Page 75: ...perates at auxiliary heat 2 4 Once the thermostat demand is satisfied the CTK0 thermostatcommandstheairhandler modularblowerto endauxiliaryheatoperation Theairhandlercontrolde energizestheelectricheat...

Page 76: ...systemCFMcanbedeterminedbyoperating theelectricheatersandindoorblowerWITHOUThavingthe compressor in operation Measure the temperature rise as close to the blower inlet and outlet as possible If other...

Page 77: ...D determine reason for failure S 62 CHECKING HEATER ELEMENTS WARNING Disconnect ALL power before servicing 1 Disassemble and remove the heating element 2 Visuallyinspecttheheaterassemblyforanybreaksin...

Page 78: ...nd amountofchargeinsystem maynotbeabletoholdtheentire system charge Thisisthemostimportantpartoftheentireserviceprocedure Thelifeandefficiencyoftheequipmentisdependentuponthe thoroughnessexercisedbyth...

Page 79: ...s supplied with the condensingunit Ifusingevaporatorcoilsorairhandlersother than HSVTC coil it may be necessary to add or remove refrigeranttoattainpropercharge Iflinesetexceeds15feet inlength refrige...

Page 80: ...Scrollcompressors reducingtheabilityofthe compressortopumprefrigerantvapor The condition of the scroll flanks is checked in the following manner 1 Attach gauges to the high and low side of the system...

Page 81: ...mnunderthedesignsubcoolingvalue Wherethetwo intersect is the required liquid line temperature Alternatelyyoucanconverttheliquidlinepressuregauge reading to temperature by finding the gauge reading in...

Page 82: ...coolingperformance test If a shortage of refrigerant is indicated then the system contains non condensables S 114 NON CONDENSABLES If non condensables are suspected shut down the system and allow the...

Page 83: ...60 8 6 162 0 57 0 264 0 87 4 366 0 110 4 468 0 129 0 600 0 149 0 62 10 0 164 0 57 7 266 0 87 9 368 0 110 8 470 0 129 3 604 0 149 5 64 11 3 166 0 58 4 268 0 88 4 370 0 111 2 472 0 129 7 608 0 150 1 66...

Page 84: ...88 86 84 82 80 78 308 90 88 86 84 82 80 317 92 90 88 86 84 82 326 94 92 90 88 86 84 335 96 94 92 90 88 86 345 98 96 94 92 90 88 354 100 98 96 94 92 90 364 102 100 98 96 94 92 374 104 102 100 98 96 94...

Page 85: ...with dry nitrogen or carbon dioxide until clean 4 Install new components including liquid line drier 5 Brazealljoints leaktest evacuate andrechargesystem 6 Start up the unit and record the pressure dr...

Page 86: ...Consult proper air handler airflow chart for quantity of air CFM at the measured external static pressure Supply Static 20 wc Return Static 30 wc S 203A TWO PIECE AIR HANDLER EXTERNAL STATIC PRESSURE...

Page 87: ...D CONTROL LOW VOLTAGE 24V FIELD SPLICE INTERNAL TO FIELD GRND OVERCUR RENT BK BLACK OR ORANGE BL BLUE PK PINK GY GRAY RD RED WH WHITE PU PURPLE YL YELLOW BR BROWN COLOR CODES GN GREEN NOTES 1 PLACE RE...

Page 88: ...ERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH Wiring is subject to change Always refer to the wiring digram...

Page 89: ...LEGACY WIRING FROM THE FACTORY THE WIRES GO TO INDOOR T STAT AS SHOWN IN LEGACY INDOOR T STAT TO WIRE THE SYSTEM IN COMMUNICATING MODE THE INSTALLER HAS TO WORK THE WIRING AS SHOWN IN COMMUNICATING I...

Page 90: ...GACY WIRING FROM THE FACTORY THE WIRES GO TO INDOOR T STAT AS SHOWN IN LEGACY INDOOR T STAT TO WIRE THE SYSTEM IN COMMUNICATING MODE THE INSTALLER HAS TO WORK THE WIRING AS SHOWN IN COMMUNICATING INDO...

Page 91: ...DOOR FAN MOTOR CMR CONDENSER MOTOR REL AY COMP COMPRESSOR CS COMPRESSOR SOLENOID DC DEFROST CONTROL DFT DEFROST THERMOSTAT DT DISCHARGE THERMOSTAT HPS HIGH PRESSURE SWITCH HVDR HIGH VOLTAGE DEFROST RE...

Page 92: ...PRESSOR OPTIO NAL CONTROLSSHOWN WITHTHERMOSTAT IN OFF POSITI O N OUTDOORPOW ER SUPPLY SEE RATINGPLATE WIRINGCODE FACTORY WIRI N G HIGH VOLTAGE LOW VOLTAGE OPTIO NAL HI G H VOLTAGE FIELD WIRI NG HIGH V...

Page 93: ...OM SR OPTIONAL HARD START K5 ECM FAN MOTOR C CHS BK BK RD RD RD YL BK RD 0140R00375 B RD BL WH PU YL OR FROM OUTDOOR UNIT R GR YL BK RD LPS HPS RVS COMPONENT CODE C CONTACT OR CH CRANKCASE HEATER CHS...

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Daikin ComfortNet DX18TC Series, Service Instructions Manual

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Summary of Contents for ComfortNet DX18TC Series

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