Daikin ComfortNet DX16TC Series User Manual Download

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Service Instructions

ComfortNet™

DX16TC & DX18TC Condensing Units,

DZ16TC & DZ18TC Split System Heat Pumps

with R-410A Refrigerant

Blowers, Coils, & Accessories

This manual is to be used by qualified, professionally trained HVAC technicians only. Goodman

does not assume any responsibility for property damage or personal injury due to improper

service procedures or services performed by an unqualified person.

RSD6200007r21

March 2020

Summary of Contents for ComfortNet DX16TC Series

Page 1: ...ls Accessories This manual is to be used by qualified professionally trained HVAC technicians only Goodman does not assume any responsibility for property damage or personal injury due to improper service procedures or services performed by an unqualified person Copyright 2015 2020 Daikin Manufacturing Company L P RSD6200007r21 March 2020 ...

Page 2: ...G FROM IMPROPER SERVICE OR SERVICE PROCEDURES IF YOU SERVICE THIS UNIT YOU ASSUME RESPONSIBILITY FOR ANY INJURY OR PROPERTY DAMAGE WHICH MAY RESULT IN ADDITION IN JURISDICTIONS THAT REQUIRE ONE OR MORE LICENSES TO SERVICE THE EQUIPMENT SPECIFIED IN THIS MANUAL ONLY LICENSED PERSONNEL SHOULD SERVICE THE EQUIPMENT IMPROPER INSTALLATION ADJUSTMENT SERVICING OR REPAIR OF THE EQUIPMENT SPECIFIED IN THI...

Page 3: ...R EXCEEDS 400 LBS WHEN IN DOUBT DO NOT USE CYLINDER WARNING TO AVOID POSSIBLE INJURY EXPLOSION OR DEATH PRACTICE SAFE HANDLING OF REFRIGERANTS WARNING SYSTEM CONTAMINANTS IMPROPER SERVICE PROCEDURE AND OR PHYSICAL ABUSE AFFECTING HERMETIC COMPRESSOR ELECTRICAL TERMINALS MAY CAUSE DANGEROUS SYSTEM VENTING The successful development of hermetically sealed refriger ation compressors has completely se...

Page 4: ...ons 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 048 4 Tons T Two Stage 060 5 Tons Communication Feature C 4 Wire Communication Ready HP R 410A Engineering Voltage ComfortNet ...

Page 5: ...on 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 Flowrator 18 1 1 2 Tons 37 2 1 2 3 Tons T Expansion Valve 24 2 Tons 42 3 1 2 Tons 25 2 Tons 47 3 1 2 Tons 29 2 1 2 3 Tons 48 4 Tons 30 2 1 2 Tons 49 4 Tons 36 3 Tons 60 5 Tons Nominal Capacity 13SEER Major Minor Revision...

Page 6: ...binet 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 Unpainted Case 2 1 2 Tons 3 Tons Expansion Device 3 3 1 2 Tons F Flowrator 3 3 1 2 Tons T 4 5 Tons Expansion Valve 4 5 Tons Factory Installed Non Adjustable Horizontal Slab Coil Major Minor Revisions Coated...

Page 7: ...t Finish U Uncased Nominal Width for Gas Furnace h t d i W 4 1 A d e t n i a P d e s a C P h t d i W 5 7 1 B d e t n i a p n U d e s a C C C 21 Width h t d i W 5 4 2 D e c i v e D n o i s n a p x E p A t o N N r o t a r w o l F F plicable Slab Coil T TXV t h g i e H d e s a C e v l a v n o i s n a p x e c i n o r t c e l E E 14 14 Coil 18 18 Coil A A Coil 22 22 Coil S Slab 26 26 Coil 30 30 Coil No...

Page 8: ...and 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 2000 CFM Variable Speed Electrical Design Series Circuit Breaker Factory Heat 1200 CFM 1600 CFM ...

Page 9: ...2 1 2 Tons 49 3 3 1 2 Tons 31 2 Tons 59 4 5 Tons 33 1 1 2 2 Tons 60 5 Tons 36 3 Tons 61 4 5 Tons C ComfortNetTM Compatible Cabinet Finish Expansion Device T Expansion Valve F Flowrater Engineering Major Minor Revisions Not used for inventory management Refrigerant Charge Multi Position 4 R 410A Variable Speed Motor Electrical Cabinet Width B 17 1 2 C 21 D 24 1 2 Communications U Unpainted P Painte...

Page 10: ...IKIN BRAND X AC 16 SEER TWO STAGE COMPRESSOR COMMUNICATING Model Rev Description DX18TC 024 060 1AA Introduces Daikin brand 2 stage 18 SEER condensing units with R 410A communicating models DX18TC0 24 36 48 60 1BA 18 SEER 2 Stage AC Development with improved performance DX18TC0481BB Design Improvement Updating shared data for 18 SEER 2 stage 4 ton AC in communicating installations Releasing minor ...

Page 11: ...oned coils to 7mm Offers improved performance DZ16TC DAIKIN BRAND X HP 16 SEER TWO STAGE COMPRESSOR COMMUNICATING 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 Introduces Daikin brand 2 stage 18 SEER heat pump units with SanHau reversing valves DZ18TC0 24 36 48 60 1CA Replaced compressors with Co...

Page 12: ...production DV33PTCC14AA DV39PTCC14AA DV49PTCC14AA Upgrade the current DV PTC C 49 cabinets to include 1 quality improvements captured in Ready15 design 2 include redesigned drain pan Morrison blower housing and Emerson NXT Booster Charge Adjustable TXV DV35PTCB14AA Introducing 2 5 and 3 Ton Air Handler product lines DV 31 37 59 PTCC14AB DV 37 59 61 PTCD14AB Revisions because of New Heater Kits rel...

Page 13: ...le blower with variable speed blower motor with communicating control serial communicating indoor blower motor Quality improvement to use 0 75 Quiet Flex Insulation MBVC1200AA1 AD MBVC1600AA1 AD MBVC2000AA1 AD Introduction of a module blower with variable speed blower motor with communicating control serial communicating indoor blower motor Introduces a new Communicating Air Handler Control Board ...

Page 14: ...6RDB CAUF3131 B C 6RDB Manufacturing Location Change from Dayton to Houston Designated by R CAUFA 6AA CAUFA 6BA Initial release of 7mm AL CAUFA Upflow Downflow coils CAPT C INDOOR COIL A UPFLOW DOWNFLOW PAINTED FLOWRATOR W TXV Model Rev Description CAPT3131B4BA CAPT3131C4BA Initial release of coils with factory installed non adjustable TXV Single stage AHRI ratings for CAPT3131 NTC combinations CA...

Page 15: ...0D6DB Drain pan material change to a Decabromodiphenyl Ether free resin CHPF1824A6CC CHPF2430B6CC CHPF3636B6CC CHPF3642C6CC CHPF3642D6CC CHPF3743C6BC CHPF3743D6BC CHPF4860D6DC Change to prepainted wrappers CHPF C INDOOR COIL HORIZONTAL A COIL PAINTED FLOWRATOR Model Rev Description CSCF 6AA Initial release of 13 SEER CSCF horizontal slab coils CSCF 6BA Burr Oak Louvered Fin released in place of th...

Page 16: ... provide increased ease of installation CAPFA1818A6AA CAPFA1818B6AA Initial release of CAPFA Upflow Downflow 7mm AL coils CAPFA1818A6BA CAPFA1818B6BA Redesigned drain pan replace two piece access panels with single piece access panel CAPFA1818C6AA CAPFA2418A6AA CAPFA2418B6AA CAPFA2418C6AA CAPFA2422B6AA CAPFA2422C6AA Initial release of CAPFA Upflow Downflow 7mm AL coils CAPFA3022B6AA CAPFA3022C6AA ...

Page 17: ...ired for heat pump applications where ambient temperature fall below 0 F with 50 or higher relative humidity DZ16TC DZ18TC Model Description DZ16TC024 DZ16TC036 DZ16TC048 DZ16TC060 DZ18TC024 DZ18TC036 DZ18TC048 DZ18TC060 ABK 20 Anchor Bracket Kit X X X X X X X X TX2N4A TXV Kit X X TX3N4 TXV Kit X X TX5N4 TXV Kit X X X X CSR U 1 Hard start Kit X X CSR U 2 Hard start Kit X X CSR U 3 Hard start Kit X...

Page 18: ...3 8 SWEAT 7 8 NUT DISTRIBUTOR BODY PISTON SEAL For Applications requiring a field installed access fitting EVAPORATOR COIL 1 4 FLARE CONNECTION BULB SUCTION LINE EXPANSION VALVE REMOVE BEFORE INSTALLING EXPANSION VALVE SEAL SUPPLIED W KIT SEAL SUPPLIED W KIT BULB TO BE LOCATED AT 10 OR 2 O CLOCK TAILPIECE 3 8 SWEAT 7 8 NUT DISTRIBUTOR BODY PISTON SEAL For Applications not requiring a field install...

Page 19: ...19 ACCESSORIES 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 FSK01A Freeze Thermostat Kit ...

Page 20: ...MBVC1200AA 1 X X X X X X MBVC1600AA 1 X X X X X X MBVC2000AA 1 X X X X X X X Allowable combinations Circuit 1 Single Phase for Air Handler Motor Restricted combinations Circuit 2 3 Phase for HKR3 Heater Kits BLOWER ELECTRIC HEAT KIT HK SERIES ELECTRIC HEAT KITS ELECTRIC HEAT KIT APPLICATIONS MBVC ...

Page 21: ...X X3 Revision level that may or may not be designated C Circuit breaker option NOTE When 8kW and 10kW heat kits are used with an AVPTC1830 and AVPTC3137 matched with 2 ton outdoor unit see Note 1 be low 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 be use...

Page 22: ...ion shall not exceed 20 kW Airflow for 5 kW up to 20 kW heater kits shall be set to 1620 cfm speed tap of ON ON OFF 3 kW heater kit is not applicable for this indoor application 3 5 6 8 10 15 19 20 21 or 25 24B 550 650 700 800 850 30C 600 700 750 875 950 36C 850 900 1000 1200 1440 1500 48C 850 900 1000 1200 1440 1500 42D 850 1250 1300 1500 1550 1720 1800 48D 1250 1300 1500 1550 1720 1815 1850 60D ...

Page 23: ...X X X X X X X X X X X X HKSX08XC X X X X X X X X X X X X X X HKSX10XC X X X X X X X X X X X X X X HKSC05XC X X X X X X X X X X X X X X HKSC08XC X X X X X X X X X X X X X X HKSC10XC X X X X X X X X X X X X X X HKSC15XA X X X X X X X X X X X HKSC15XB X X X X X X X X X X X X X X HKSC15XF X X X X X X X X X HKSC19CA X X X X HKSC19CB X X X X X HKSC19CH X HKSC20DA HKSC20DB X X HKSC20DH X X HKSC20XF X X X...

Page 24: ...of the early model scroll compressors re quired 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 required The DX16TC DZ16TC DX18TC DZ18TC series split system units use a two stage scroll compressor The two step modulator has an internal unloading mechanism...

Page 25: ... molded plug 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 cabinets are designed to be used as a two piece blower and coil combination and can be utilized with the CAUF CAPF CAPFA and CAPT coils for upflow and downflow appli cations The CACF and CH...

Page 26: ...ntrols line voltage monitors Comfort Alert or CoreSense Module dependent upon which module you are using two speed condenser fan relays and the Active Protection compo nent of enabled thermostats The control is designed to work as part of a fully communicating HVAC system with 4 wires The control also supports legacy 24VAC thermostat inputs for Y1 Y2 O and 24VAC outputs for RVS W1 and L for non co...

Page 27: ...por is fully liquefied it continues to give up 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 cycle By energizing the reversing valve solenoid coil the flow of the refrigerant is reversed The indoor coil now becomes the condenser coil and the outdoor coil becomes the evaporator coil The check valve...

Page 28: ...rature is low enough approximate ly 31 F the microprocessor will accumulate the compressor run time When the total compressor run time reaches 30 60 90 or 120 minutes and there is a call for heat the PCB will initiate a defrost cycle When the microprocessor detects the coil temperature to be high enough approximately 75 F or 10 minutes of maximum defrost cycle time has elapsed which ever occurs fi...

Page 29: ...ow Filter Dryer Outdoor Coil Thermostatic Expansion Valve Check Valve Reversing Valve De Energized Indoor Coil Accumulator Bi Flow Filter Dryer Outdoor Coil Thermostatic Expansion Valve Check Valve Reversing Valve Energized COOLING CYCLE HEATING CYCLE ...

Page 30: ...ALVE CHECK VALVE ASSEMBLY IN HEATING OPERATION Most expansion valves used in current Daikin Brand Heat Pump products use an internally checked expansion valve This type of expansion valve does not require an external check valve as shown above However the principle of operation is the same ...

Page 31: ...nticipator 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 S 112 Open Element or Limit on Elec Heater Test Heater Element and Controls S 26 S 27 Dirty Air Filter Inspect Filter Clean or Replace Dirty Indoor Coil Inspect Coil Clean Not enough air across Indoor Coil Check Blow er S...

Page 32: ...17C UNLOADER TEST PROCEDURE 80 S 17D OPERATION TEST 80 S 18 TESTING CRANKCASE HEATER OPTIONAL ITEM 81 S 21 CHECKING REVERSING VALVE AND SOLENOID 81 S 24 TESTING DEFROST CONTROL 81 S 26 TESTING TEMPERATURE SENSORS COMFORTNET READY MODELS ONLY 82 S 40A DVPTC MBVC ELECTRONIC BLOWER HEATER CONTROL 82 S 60 ELECTRIC HEATER OPTIONAL ITEM 87 S 61A CHECKING HEATER LIMIT CONTROL S 87 S 61B CHECKING HEATER F...

Page 33: ...tage 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 to calculate temperature rise and air flow Low voltage may cause insufficient heating S 2 CHECKING WIRING HIGH VOLTAGE Disconnect ALL power before servicing or installing Multiple power sources may be pr...

Page 34: ...ivers the low stage cooling airflow The table below lists the nominal high and low stage airflow for the 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 SZC160601 1800 1210 1800 1210 SZC180361 1250 850 1250 850 SZC180481 1750 1210 1750 1210 SZC180601 1750 1210 1750 1210 Cooling Heating Models Control W...

Page 35: ... kit See kit instructions for mounting and wiring instructions Four wires are required between the indoor unit and thermostat ComfortNet System Advanced Features The ComfortNet system permits access to additional system information advanced setup features and advanced diag nostic troubleshooting features These advanced features are organized into a menu structure Refer to the Installation and Star...

Page 36: ...epressed None None Green Receive LED Off No power Communications error No power to air handler Open fuse Communications error Check fuses and circuit breakers replace reset Replace blown fuse Check for shorts in low voltage wiring in air handler system Reset network by depressing learn button Check data 1 data 2 voltages Turn power OFF prior to repair 1 Steady Flash No network found Broken disconn...

Page 37: ...OTOR 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 LEGACY MODE ONLY P1 LOW STAGE HEAT PUMP HEAT LEGACY MODE ONLY P2 HIGH STAGE HEAT PUMP HEAT LEGACY MODE ONLY h1 EMERGENCY HEAT LOW COMMUNICATING MODE ONLY h2 EMERGENCY HEAT HIGH COMMUNICATING MODE ONLY...

Page 38: ...rd may be removed after data is loaded Turn power OFF before removing memory card Error code will be cleared once data is loaded Electric heat airflow is higher than expected on a call for W1 or Auxiliary Emergency heat Integrated control module LED display provides the indicated error code 1 Flash Heater kit selected via dipswitches does not heater kits specified in shared data set NO HTR MATCH E...

Page 39: ...mory card BEFORE turning power ON Memory card may be removed after data is loaded Turn power OFF before removing memory card Error code will be cleared once data is loaded Operation different than expected or no operation Integrated control module LED display provides indicated error code ComfortNet thermostat Call for Service icon illuminated ComfortNet thermostat scrolls Check Air Handler messag...

Page 40: ...es not match circulator blower motor horse power MOTOR MISMATCH b2 Incorrect circulator blower motor in air handler Incorrect shared data set in integrated control module Verify circulator blower motor horse power is the same specified for the specific air handler model Replace is necessary Verify shared data set is correct for the specific model Re populate data using correct memory card if requi...

Page 41: ...C line voltage to air handler Low AC line voltage to air handler High ambient temperatures Check power to air handler Verify line voltage to blower is within the range specified on the air handler rating plate See Installation Instructions for installation requirements Turn power OFF prior to repair Air handler fails to operate Integrated control module LED display provides indicated error code Co...

Page 42: ...heater kits specified in shared data set HTR TOO SMALL EC Heater kit selected via dipswitches is too small for heater kits in shared data set Verify electric heat dipswitch settings Verify the installed electric heater is valid for the air handler blower Check nameplate or Specification Sheet applicable to your model for allowable heater kit s Verify shared data set is correct for the specific mod...

Page 43: ... Air Handler message d0 Data not yet on network NO NET DATA d0 Air handler blower does not contain any shared data Populate shared data set using memory card Turn power OFF prior to repair Use memory card for the specific model Insert memory card BEFORE turning power ON Memory card may be removed after data is loaded Error code will be cleared once data is loaded Turn power off before removing mem...

Page 44: ...tor blower motor horse power MOTOR MISMATCH b2 Incorrect circulator blower motor in air handler blower Incorrect shared data set in integrated control module Verify circulator blower motor horse power is the same specified for the specific air handler blower model Replace is necessary Verify shared data set is correct for the specific model Re populate data using correct memory card if required Tu...

Page 45: ...ambient temperatures Check power to air handler blower Verify line voltage to blower is within the range specified on the air handler blower rating plate See Installation Instructions for installation requirements Turn power OFF prior to repair Air handler blower fails to operate Integrated control module LED display provides indicated error code ComfortNet thermostat Call for Service icon illumin...

Page 46: ...elays are used in electric heaters to sequence in multi ple electric heaters WARNING Disconnect ALL power before servicing 1 Tag and disconnect all wires from male spade connections of relay 2 Using an ohmmeter measure the resistance across termi nals H1 and H2 Should read approximately 150 ohms 3 Using an ohmmeter check for continuity across terminals 3 and 1 and 4 and 5 4 Apply 24 volts to termi...

Page 47: ... for broken wires 5 If all voltages are present motor is defective and needs to be replaced Checking Relay Contacts PSC Fan Motor HIGH VOLTAGE Disconnect 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 motor wire harness 2 Connect a voltmeter between ci...

Page 48: ...integraged Comfort Alert diagnostics provide around the clock monitor ing for common electrical problems compressor defects and broad system faults If a problem is detected LED indicators flash the proper alert codes to help you quickly pinpoint the problem The diagnostic tables on following pages provide detailed information regarding the system symptons indicators LED and thermostat potential pr...

Page 49: ...he 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 motor failure Indoor thermostat set extremely low Verify refrigerant charge adjust as needed Check for restricted liquid line repair replace as needed Check indoor blower motor repair replace as needed Check low pressure switch repair r...

Page 50: ... wiring repair replace as needed 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 within same thermostat demand Thermostat demand is present Integrated control module diagnostic status LED s display the indicated code ComfortNet thermostat Call for Service i...

Page 51: ...repair replace as needed Check compressor wiring repair replace as needed Turn power OFF prior to repair Fault will clear after 1 normal cycle Fault may be cleared by cycling 24VAC to control Replace with correct replacement part s Compressor and outdoor fan are off Low pressure and high pressure switches are closed Integrated control module diagnostic status LED s display the indicated code Comfo...

Page 52: ...Pump message OFF 7 Flashes 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 replace as needed Check wiring repair replace as needed Turn power OFF prior to repair Must clear fault by cycling 24VAC to control Replace with correct replacement part s A...

Page 53: ...ion Check transformer replace if needed Turn power OFF prior to repair Fault will clear if secondary voltage rises above 21VAC Replace with correct replacement part s Compressor is off Integrated control module diagnostic status LED s display the indicated code OFF ON ON ON if call present OFF if no call Comp Protector Open Not displayed Not displayed No current through run or start windings Compr...

Page 54: ...Timer l o o C w o L 1 C l o o C h g i H 2 C t s o r f e D F d 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 Card Data E E Board Misoperation E 5 Open Fuse F t Field Test Mode H 8 High Line Voltage L 1 LPCO Lockout 3 Trips L 2 HPCO Lockout 3 Trips L 6 Open Start Circuit Lockout L 7...

Page 55: ...EE Compressor relay contacts welded Replace control Turn power OFF prior to repair Replace with correct replacement part Air conditioner heat pump fails to operate Integrated control module diagnostic status LED display shows the indicated code displays error message b 0 Circulator blower motor is not running when it should be running MOTOR b0 Indoor blower motor problem Communications error betwe...

Page 56: ... type communicating or legacy Populate correct shared data using memory card Wire system as legacy system Turn power OFF prior to repair Use memory card for Insert memory card BEFORE turning power be removed after data is loaded Turn power OFF before removing memory card Error code will be cleared once data is loaded Applies only to fully communicating system thermostat Air conditioner heat pump f...

Page 57: ... be cleared once data is loaded Very long run time Four consecutive compressor protector trips with average run time between trips greater than 3 hours Compressor operating at high speed and outdoor fan operating at low speed Integrated control module diagnostic status LED display shows the indicated code 0 1 Low Side Fault LOW SIDE FAULT 01 Low refrigerant charge Restriction in liquid line Indoor...

Page 58: ...r fan motor wir ing repair replace as needed Chec k outdoor fan motor capacito r replace as needed Turn power OFF pr ior to repair Fault will clear after 4 consecutiv e nor mal cycles Fault may be cleared by cycling 24V AC to control Replace with correct replacement par t s Compressor and outdoor f Ther mostat demand is present Integrated control module diagnostic status LED displ ay sho ws the in...

Page 59: ... utility is out of range Turn power OFF pr ior to repair Must clear f ault by cycling 24V AC to control Replace with correct replacement par t s Compressor and outdoor f or greater than 4 hours Low pressure and high pressure switches are closed Integrated control module diagnostic status LED displ ay sho ws the indicated code displays error message 0 5 Open Circui t CIRCUIT 05 Power is disconnecte...

Page 60: ...ed Turn power OFF pr ior to repair Fault will clear after 1 normal cycl e Fault may be cycling 24VAC to control Replace with correct replacement par t s Compressor and outdoor f Low pressure and high pressure switches are closed Open r un circuit has been detected 4 times with 5 minute delay between each detection Integrated control module diagnostic status LED displ ay sho ws the indicated code d...

Page 61: ...if secondar y voltage rises above 21V AC Replace with correct replacement par t s Integrated control module diagnostic status LED displ ay sho ws the indicated code P 0 Comp Protector Open displayed displayed through run or star t windings Compressor run winding is open Compressornot properlywiredto control Faulty compressor wiring Failed compressor r un capacito r Faulty run capacitor wi ring Che...

Page 62: ...mpressor relay contacts welded Replace control Turn power OFF prior to repair Replace with correct replacement part Air conditioner heat pump fails to operate Integrated control module diagnostic status LED display shows the indicated code displays error message b 0 Circulator blower motor is not running when it should be running MOTOR b0 Indoor blower motor problem Communications error between in...

Page 63: ... communicating or legacy Populate correct shared data using memory card Wire system as legacy system Turn power OFF prior to repair Use memory card for Insert memory card BEFORE turning power be removed after data is loaded Turn power OFF before removing memory card Error code will be cleared once data is loaded Applies only to fully communicating system thermostat Air conditioner heat pump fails ...

Page 64: ...cleared once data is loaded Very long run time Four consecutive compressor protector trips with average run time between trips greater than 3 hours Compressor operating at high speed and outdoor fan operating at low speed Integrated control module diagnostic status LED display shows the indicated code 0 1 Low Side Fault LOW SIDE FAULT 01 Low refrigerant charge Restriction in liquid line Indoor blo...

Page 65: ...n motor wir ing repair replace as needed Chec k outdoor fan motor capacito r replace as needed Turn power OFF pr ior to repair Fault will clear after 4 consecutiv e nor mal cycles Fault may be cleared by cycling 24V AC to control Replace with correct replacement par t s Compressor and outdoor f Ther mostat demand is present Integrated control module diagnostic status LED displ ay sho ws the indica...

Page 66: ...ity is out of range Turn power OFF pr ior to repair Must clear f ault by cycling 24V AC to control Replace with correct replacement par t s Compressor and outdoor f or greater than 4 hours Low pressure and high pressure switches are closed Integrated control module diagnostic status LED displ ay sho ws the indicated code displays error message 0 5 Open Circui t CIRCUIT 05 Power is disconnected Fai...

Page 67: ...rn power OFF pr ior to repair Fault will clear after 1 normal cycl e Fault may be cycling 24VAC to control Replace with correct replacement par t s Compressor and outdoor f Low pressure and high pressure switches are closed Open r un circuit has been detected 4 times with 5 minute delay between each detection Integrated control module diagnostic status LED displ ay sho ws the indicated code displa...

Page 68: ... t s Air conditioner heat pump may appear to be operating nor mally Compressor protector may be open compressor and outdoor f Integrated control module diagnostic status LED displ ay sho ws the indicated code 0 8 VO LTAG E 08 Chec k circuit breaker and fuses Ve rify unit is con nected to po wer on rating plate Turn power OFF pr ior to repair Control detects line voltage less than 185 VAC Fault wil...

Page 69: ...roximately 50 PSIG for heat pumps and 95 PSIG for air conditioners Test for continuity using a VOM and if not as above replace the control S 14 CHECKING HIGH AND LOW PRESSURE SWITCH VOLTAGE The HPC and LPC are wired in series so output at both switches should be the same when switches are closed voltage reading should be 6 5vdc or 8 0vac NOTE the Discharge Thermostat is wired in series with the HP...

Page 70: ... 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 The motor is a serially communicating variable speed motor Only four wires are required to control the motor Vdc Com mon Receive and Transmit The Vdc and Common wires provide power to the motor s low voltage control circ...

Page 71: ...ed the tool either has an open fuse or is not prop erly connected to a 24VAC source 8 The green LED on the diagnostic tool will blink indicating communications between the tool and motor See table below for indications of tool indicators and motor actions Replace or repair as needed Power Button Green LED Motor Action Indication s OFF OFF Not Rotating Confirm 24VAC to UltraCheck EZTM tool If 24VAC...

Page 72: ...acitors that can hold a charge for several minutes after disconnecting power Wait 5 minutes after removing power to allow capacitors to discharge 2 Disconnect the motor control harness and motor power harness 3 Remove the blower assembly from the air handler or modular blower 4 Remove the 3 screws securing the control end bell to the motor Separate the control end bell Disconnect the 3 circuit har...

Page 73: ...g the installed electric heater kit size 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 Dipswitches Used to set the desired cooling airflow Cooling Airflow Speed Tap indicates factory setting Tap A 1 OFF ON 2 Tap B 1 OFF ON 2 Tap C 1 OFF ON 2 Tap D 1 OFF ON 2 Airflow ...

Page 74: ...iles above Set switches 5 and 6 to the approriate ON OFFpositions 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 0140A00045 Speed Selection Dip Switches B 30 sec 50 60 sec 100 To set Comfort Mode Profiles Pre Run Short Run OFFDelay C 7 5 min 82 60 sec 100 Model Tap Low Stage High Stage Cool Cool MBVC1200 A 400 600 B 540...

Page 75: ... 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 module Select the desired cooling speed tap by positioning switches 1 and 2 appropriately Select the desired adjust tap by positioning switches 3 and 4 appropriatly Refer to the following Dipswitches Coo...

Page 76: ...ge CFM High stage CFM A 410 610 B 565 835 C 660 970 D 765 1125 A 440 610 B 605 835 C 740 1020 D 885 1225 A 500 725 B 700 1000 C 930 1330 D 1120 1600 A 500 725 B 700 1000 C 930 1330 D 1120 1600 A 560 800 B 763 1090 C 994 1420 D 1225 1750 A 900 1350 B 1035 1550 C 1140 1700 D 1200 1800 A 1210 1610 B 1365 1815 C 1450 1920 D 1525 2025 DV48PTCD14 DV60PTCD14 Cooling Heat Pump Airflow Table DV24PTCB14 DV3...

Page 77: ... 7 5 min 82 60 sec 100 D 7 5 min 82 30 sec 50 To set Airflow 1 Select model and desired High Stage Cooling Airflow Determine the corresponding tap A B C D Set dip switches S1 and S2 to the appropriate ON OFF positions 2 Select model and installed electric heater size Set dip switches S9 S10 and S11 to the appropriate ON OFF positions 3 If airflow adjustment is required set Trim Enable Switch S8 to...

Page 78: ...90 1290 1220 1520 1520 1650 1090 19 OFF OFF ON NR NR NR NR 1280 1345 1280 1345 NR NR NR NR 1280 20 OFF OFF ON NR NR NR NR NR NR NR NR 1250 1520 NR 1690 NR 21 OFF OFF OFF NR NR NR NR NR NR NR NR NR NR NR 1750 NR 25 OFF OFF OFF NR NR NR NR NR NR NR NR NR NR NR 1750 NR NOTE Airflow data shown applies to the electric heat only in either legacy mode or communicating mode operation Within thermostat use...

Page 79: ...winding temperature High motor temperature or amper age heats the disc causing it to open breaking the common circuit within the compressor on single phase units Heat generated within the compressor shell usually due to re cycling of the motor high amperage or insufficient gas to cool the motor is slow to dissipate Allow at least three to four hours for it to cool and reset then retest Fuse circui...

Page 80: ...e compressor amperage Cycle the unloader on and off at ten second intervals by appling and removing Y2 voltage to the module Wait five seconds after power is applied to Y2 before taking a reading An increase in compressor amperage should be observed when switching from part load to full load and a reduction in compressor amperage should be observed when changing from full load to part load The per...

Page 81: ...ssor is directed back to the suction side resulting in excessively high suction pressure An increase in the suction line temperature through the reversing valve can also be mea sured Check operation of the valve by starting the system and switching the operation from COOLING to HEATING cycle If the valve fails to change its position test the voltage 24V at the valve coil terminals while the system...

Page 82: ...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 Control input is 24VAC All dipswitches necessary to setup cooling heat pump and electric heat airflow are fully integrated into the control De humidification is enabled disabled via an on board dipswitch Features The new air handle...

Page 83: ...ing potential problem c Learn button Used to reset the network Depress the button for approximately 2 seconds to reset the network Voltages between the two data lines and between each data line and common may be used to determine if the network is operating properly Do the following to measure the voltages on the communications data lines WARNING Line Voltage now present Data Line Voltage Troubles...

Page 84: ...aters 2 3 The system operates at emergency heat 2 4 Once the thermostat demand is satisfied the CTK0 thermostat commands the air handler modular blower to end emergency heat operation The air handler control de energizes the electric heat sequencer outputs The ECM blower motor remains energized until any blower OFF delay timing has expired 3 0 Continuous Fan Operation 3 1 With a demand for continu...

Page 85: ...ower speed to the high stage heat pump heating speed 2 7 The heat pump s unitary control energizes the high stage compressor solenoid and switches the condenser fan mo tor to high speed 2 8 The system operates at high stage heat pump heating 2 9 If the thermostat demand cannot be met on high stage heat pump heating the CTK0 thermostat sends a request for auxiliary heat to the air handler modular b...

Page 86: ...tric heaters may be added in the quantities shown in the specifications section to provide electric resis tance heating Under no condition shall more heaters than the quantity shown be installed The low voltage circuit in the air handler is factory wired and terminates at the location provided for the electric heater s A minimum of field wiring is required to complete the installa tion Other compo...

Page 87: ...sassemble and remove the heating element 2 Visually inspect the heater assembly for any breaks in the wire or broken insulators 3 Using an ohmmeter test the element for continuity no reading indicates the element is open Replace as necessary S 100 REFRIGERATION REPAIR PRACTICE DANGER Always remove the refrigerant charge in a proper manner before applying heat to the system When repairing the refri...

Page 88: ...re from the system Air in a system causes high condensing temperature and pressure resulting in increased power input and reduced performance Moisture chemically reacts with the refrigerant oil to form corrosive acids These acids attack motor windings and parts causing breakdown The equipment required to thoroughly evacuate the system is a high vacuum pump capable of pro ducing a vacuum equivalent...

Page 89: ... loss of refrigerant DO NOT apply pressure to the retainer When opening valves without a retainer remove service valve cap and insert a hex wrench into the valve stem and back out the stem by turning the hex wrench counterclockwise Open the valve until it contacts the rolled lip of the valve body NOTE These are not back seating valves It is not necessary to force the stem tightly against the rolle...

Page 90: ...re drop across the drier 2 Check the operation of the power element of the valve as described in S 110 Checking Expansion Valve Operation S 108 SUPERHEAT The expansion valves are factory adjusted to maintain 7 to 9 degrees superheat of the suction gas Before checking the superheat or replacing the valve perform all the procedures outlined under Air Flow Refrigerant Charge Expansion Valve Overfeedi...

Page 91: ...valve is operating If no change is noticed the valve is restricted the power element is faulty or the equalizer tube is plugged 5 Capture the charge replace the valve and drier evacuate and recharge S 112 CHECKING RESTRICTED LIQUID LINE When the system is operating the liquid line is warm to the touch If the liquid line is restricted a definite temperature drop will be noticed at the point of rest...

Page 92: ...he condition of the scroll flanks is checked in the following manner 1 Attach gauges to the high and low side of the system 2 Start the system and run a Cooling Performance Test If the test shows a Below normal high side pressure b Above normal low side pressure c Low temperature difference across coil d Low amp draw at compressor And the charge is correct The compressor is faulty re place the com...

Page 93: ... 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 12 6 168 0 59 0 270 0 88 9 372 0 111 6 474 0 130 0 612 0 150 6 68 13 8 170 0 59 8 272 0 89 4 374 0 112 0 476 0 130 3 616 0 151 2 70 15 1 172 0 60 5 274 0 89 9 376 0 112 4 478 0 130 7 620 0 151 7 72 1...

Page 94: ...9 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 94 384 106 104 102 100 98 96 395 108 106 104 102 100 98 406 110 108 106 104 102 100 416 112 110 108 106 104 102 427 114 112 110 108 106 104 439 116 114 112 110 108 106 450 118 116 114 112 110 108 462 1...

Page 95: ...n or car bon dioxide until clean 4 Install new components including liquid line drier 5 Braze all joints leak test evacuate and recharge system 6 Start up the unit and record the pressure drop across the drier 7 Continue to run the system for a minimum of twelve 12 hours and recheck the pressure drop across the drier Pressure drop should not exceed 6 PSIG 8 Continue to run the system for several d...

Page 96: ...nsult 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 To determine proper airflow proceed as follows 1 Using a Inclined Manometer or Magnehelic gauge mea sure the static pressure between the outlet of the evap orator coil and the inlet of the air handler t...

Page 97: ...OW 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 RED WIRES ON TRANSFORMER TERMIN AL 2 FOR 208 VAC OPERATION 2 MANUFACTURER S SPECIFIED RE PLACE MENT PA RTS MU ST BE U SED WHEN SERVICING 3 IF ANY OF THE ORIGINAL WIRES AS SU PPLIED WITH THIS UNIT MU ST BE R EPLACE...

Page 98: ...SERVICING 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 on the unit for the most up to date wiring 3 Phase Heat Kit ...

Page 99: ...NECTING TO R TERMINAL O L R C W1 Y1 E2 Y2 1 2 LPS E22 E23 E9 E26 E7 E1 HPS OAS DT E28 HIGH VOLTAGE AREA LOW VOLTAGE AREA E29 E24 CS NOTE 1 SEE NOTE 6 SEE NOTE 6 SEE NOTE 6 NOTE SEE INSTALLATION MANUAL FOR R C WIRING OF AIR CO NDITIONER CONTROL BLACK BLUE BLUE PINK STRIPE BROWN ORANGE PURPLE RED WHITE YELLOW YELLOW PINK STRIPE CONTA CTOR CRANKCASE HEATER CRANKCASE HEATER SWITCH CONDENSER FAN MO TOR...

Page 100: ...MOTOR C CHS BK BK RD RD RD YL BK RD 0140R00615 A BK GY FROM OUTDOOR UNIT R GR YL BK RD LPS HPS RVS HP ON LY COMPONENT CODE C CONTACTO R CH CRANKCAS E HEATER CHS CRANKCASE HE ATER SWITCH CM CONDENSER FAN MO TOR COMP COMPRESSO R CS COMPRES SOR SOLENOI D DT DISCHARGE THERMOSTAT HPS HIGH PRESSURE SWITCH IO INTERNAL OVERLOAD LPS LOW PRESSURE SWITCH OAS OUTDOOR AIR SENSOR OCS OUTDOOR COIL TEMP SENSOR RC...

Page 101: ... COM 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 CRANKCASE HEATER SWIT CH CM CONDENSER FAN MOT OR COMP COMPRESSOR CS COMPRESSORSOLENO ID DT DISCHARGE THE RMOS TAT HPS HIGHPRESSURE SWIT CH IO INTERNAL OV ERLOAD LPS LOW PR ESSURE SWIT CH OAS OU TDOO...

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Daikin ComfortNet DX16TC Series, Service Instructions Manual

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Summary of Contents for ComfortNet DX16TC Series

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