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DP14UM/DP16UM SEER ULTRA-LOW NOx GAS ELECTRIC
ONLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL, ADJUST,
SERVICE OR REPAIR(HEREINAFTER, "SERVICE") THE EQUIPMENT
SPECIFIED IN THIS MANUAL SHOULD SERVICE THE EQUIPMENT. THE
MANUFACTURER WILL NOT BE RESPONSIBLE FOR ANY INJURY OR
PROPERTY DAMAGE ARISING FROM IMPROPER SERVICE OR SERVICE
PROCEDURES. IF YOU SERVICE THIS UNIT, YOU ASSUME RESPONSI-
BILITY 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 THIS MANUAL, OR ATTEMPTING TO
INSTALL, ADJUST, SERVICE OR REPAIR THE EQUIPMENT SPECIFIED IN
THIS MANUAL WITHOUT PROPER TRAINING MAY RESULT IN PROD-
UCT DAMAGE, PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
DO NOT BYPASS SAFETY DEVICES
This manual is to be used by qualified, professionally trained HVAC technicians only.
Daikin does not assume any responsibility for property damage or personal injury due to
improper service procedures or services performed by an unqualified person.
Copyright © 2021
Service Instructions
WARNING
WARNING
TABLE OF CONTENTS
Important Information ......................................... 2
Product Identification .......................................... 3
System Operation ................................................... 5
Servicing Table Of Contents ................................ 10
Servicing .............................................................. 11
Troubleshooting Charts ..................................... 34
Wiring Diagrams ................................................. 36
Scheduled Maintenance ...................................... 41
RSD6313002
October 2021
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Summary of Contents for Daikin DP14UM
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Page 1: Table Of Contents
This manual is to be used by qualified, professionally trained HVAC technicians only. RSD6313002 Daikin does not assume any responsibility for property damage or personal injury due to October 2021 improper service procedures or services performed by an unqualified person. -
Page 2: Important Information
IMPORTANT INFORMATION IMPORTANT NOTICES WARNING RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS 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 refrigerant into an enclosed room or space. By law, WARNING all refrigerant must be reclaimed. -
Page 3: Product Identification
The model number is used for positive identification of component parts used in manufacturing. Please use this number when requesting service or parts information. 9,10,11 Engineering Minor revision Brand D - Daikin Engineering Major revision Product Type Voltage P - Packaged... - Page 4 PRODUCT IDENTIFICATION Single Phase Package Gas Units Model # Description Daikin Brand Ultra-Low Nox Package Gas 14 Seer R410A Multi-Position gas/electric units. DP14UM[24-48]***41AA Initial release of single phase models. Daikin Brand Ultra-Low Nox Package Gas 16 Seer R410A Multi-Position gas/electric units.
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Page 5: System Operation
Direct Spark Ignition (DSI) Systems indoor coil, a portion of the liquid immediately vaporizes. DP14UM/DP16UM units are equipped with a direct spark It continues to soak up heat and vaporizes as it proceeds ignition system. Ignition is provided by a 25,000 volt through the coil, cooling the indoor coil down to about electronic spark. - Page 6 SYSTEM OPERATION 4. The continuous fan operation will function while the • The control energizes the gas valve and spark igniter. If control is in heat mode lockout. flame is not established within 4 seconds, the gas valve and spark igniter is de-energized and the control goes Cool Mode to an inter-purge.
- Page 7 FLASHES HARD LOCKOUT EXPIRED Please see the table below for reference: OEM FACTORY TEST STEADY ON AMBER MODE RAPID Part Number Daikin FIELD TEST MODE AMBER FLASH 0130G00012 DP**UM**04041AA 1 FLASH LOW FLAME SENSE AMBER HARD LOCKOUT 2 FLASHES ID PLUG FAILURE...
- Page 8 SYSTEM OPERATION ID Plug Installation The following procedure will ensure the proper operating parameters are installed onto the board. Each model has a unique ID PLUG that needs to be installed onto the board. Please see the instructions below: 1. Select the appropriate ID plug for the installed model number from the table above.
- Page 9 SYSTEM OPERATION Typical Package Cooling or Package Gas Either a thermostatic expansion valve or restrictor orifice assembly may be used depending on model, refer to the parts catalog for the model being serviced. Restrictor Orifice Assembly in Cooling Operation In the cooling mode, the orifice is pushed into its seat forcing refrigerant to flow through the metered hole in the center of the orifice.
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Page 10: Servicing Table Of Contents
SERVICING SERVICING TABLE OF CONTENTS S-1 Checking Voltage ........... 15 S-104 Checking Compressor Efficiency ....26 S-105 Thermostatic Expansion Valve ....26 S-2 Checking Wiring ..........15 S-106 Overfeeding ..........26 S-3 Checking Thermostat and Wiring ....15 S-4 Checking Transformer and Control Circuit . 15 S-107 Underfeeding .......... -
Page 11: Servicing
SERVICING 1. Check wiring visually for signs of overheating, S-1 Checking Voltage damaged insulation and loose connections. 2. Use an ohmmeter to check continuity of any suspected open wires. WARNING 3. If any wires must be replaced, replace with High Voltage! comparable gauge and insulation thickness. -
Page 12: Checking Contactor And/Or Relays
SERVICING If the coil does not test continuous, replace the relay or A step-down transformer (208/240 volt primary to 24 contactor. volt secondary) is provided with each indoor unit. This allows ample capacity for use with resistance heaters. The S-8 Checking Contactor Contacts outdoor sections do not contain a transformer. -
Page 13: Checking High Pressure Control
SERVICING S-9 Checking Fan Relay Contacts S-15 Checking Capacitor The fan relays are incorporated into the control board. See Capacitor, Run Testing Ignition Control Module for checking control board. A run capacitor is wired across the auxiliary and main S-12 Checking High Pressure Control windings of a single phase permanent split capacitor motor. -
Page 14: S-17A Resistance Check
SERVICING Relay, Start 2. Set an ohmmeter on its highest ohm scale and A potential or voltage type relay is used to take the start connect the leads to the capacitor - capacitor out of the circuit once the motor comes up A. -
Page 15: S-16C Checking Ecm Motor Windings
SERVICING WARNING High Voltage! Disconnect all power before servicing or installing. Multiple power sources may be Motor present. Failure to do so may cause property Connector damage, personal injury or death. (3-pin) 1. Remove the motor leads from its respective connection points and capacitor (if applicable). -
Page 16: Checking Ecm Motors
SERVICING 5. If line voltage is present, reinsert the 5-pin connector and remove the 16-pin connector. High Voltage 6. Check for signal (24 volts) at the transformer. Connections 7. Check for signal (24 volts) from the thermostat to the 3/16" “G”... -
Page 17: Checking Compressor
SERVICING Checking ECM Motor Windings This discharge can be ignited external to the compressor if the terminal cover is not properly in place and if the WARNING discharge impinges on a sufficient heat source. High Voltage! Ignition of the discharge can also occur at the venting Disconnect all power before servicing or terminal or inside the compressor, if there is sufficient installing. -
Page 18: S-17B Ground Test
SERVICING 2. Disconnect the three leads going to the compressor WARNING terminals at the compressor or nearest point to the compressor. See warnings before removing compressor terminal 3. Check for a ground separately between each of the cover. three terminals and ground (such as an unpainted tube on the compressor). -
Page 19: S-17D Operation Test
SERVICING S-17D Operation Test Unloader Test Procedure If the voltage, capacitor, overload and motor winding test If it is suspected that the unloader is not working, the fail to show the cause for failure: following methods may be used to verify operation. 1. -
Page 20: Testing Crankcase Heater (Optional Item)
SERVICING With power ON: 1. Never open a system that is under vacuum. Air and moisture will be drawn in. WARNING 2. Plug or cap all openings. 3. Remove all burrs and clean the brazing surfaces of the Line voltage now present tubing with sand cloth or paper. -
Page 21: S-102 Evacuation
SERVICING S-102 Evacuation WARNING LOW SIDE HIGH SIDE GAUGE GAUGE AND VALVE AND VALVE REFRIGERANT UNDER PRESSURE! Failure to follow proper procedures may cause property damage, personal injury or death. This is the most important part of the entire service procedure. -
Page 22: S-104 Checking Compressor Efficiency
Only use refrigerant certified to AHRI standards. Used wash oil from the bearing surfaces causing premature refrigerant may cause compressor damage. Daikin is not bearing failure. responsible for damage or the need for repairs resulting from the use of unapproved refrigerant types or used or recycled refrigerant. -
Page 23: S-106 Overfeeding
SERVICING The bulb must be securely fastened to a clean straight CAUTION section of the suction line. Application of the bulb to a horizontal run of line is preferred. If a vertical installation To prevent personal injury, carefully connect and cannot be avoided the bulb should be mounted so that the disconnect manifold gauge hoses. -
Page 24: S-110 Checking Expansion Valve Operation
SERVICING The TXV should NOT be adjusted at light load conditions To obtain the amount of subcooling subtract 109°F from 55º to 60ºF, under such conditions only the subcooling 120°F. can be evaluated. This is because suction pressure is dependent on the indoor coil match, indoor airflow, and The difference is 11°... -
Page 25: S-113 Overcharge Of Refrigerant
SERVICING Also with a fixed orifice restrictor device (flowrator) If a restriction should become evident, proceed as follows: metering device, extreme cases of insufficient indoor air 1. Recover refrigerant charge. can cause icing of the indoor coil and liquid refrigerant 2. -
Page 26: S-200 Checking External Static Pressure
NOTE: The Flushing Method using R-11 refrigerant is no much air can cause poor humidity control, and condensate longer approved by Daikin Brand Heating-Cooling. to be pulled off the evaporator coil causing condensate leakage. Too much air can cause motor overloading and in Suction Line Drier Clean-Up Method many cases this constitutes a poorly designed system. -
Page 27: S-201 Checking Temperature Rise
SERVICING S-201 Checking Temperature Rise S-300 Testing Primary Limit Control Temperature rise is related to the BTUH output of the APG/GPG units use a snap-disk type primary limit device. unit and the amount of air (CFM) circulated over the heat Sometimes referred to as “stat on a stick”. -
Page 28: S-302 Checking Flame Rollout Switch
AUX. LIMIT Testing Auxiliary Limit Control S-302 Checking Flame Rollout Switch DP14UM/DP16UM units are equipped with a temperature- activated manual reset control. This control is mounted to the manifold assembly and is wired in series with the auxiliary limit and gas valve. The control is designed to open should a flame roll out occur. -
Page 29: S-303 Testing Inducer Motor
SERVICING S-303 Testing Inducer Motor WARNING 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 wire leads from its connection point at integrated ignition control module. -
Page 30: Checking Pressure Transducer
SERVICING Checking Pressure Transducer WARNING The pressure transducer is a pressure sensing device that allows the control to modulate the inducer motor through Disconnect Gas and electrical power supply. the heating cycle. The transducer contains electronic circuitry and must not be subjected to any voltage source NOTE: Use adapter kit 0151K00000S to measure gas other than factory wiring. -
Page 31: Checking Integrated Igntion Control Board
SERVICING When the mixture does ignite, it may explode and/or 3. Blower – “Fan” Speed for 15 seconds rollout causing burning in the burner venturi. 4. Spark Igniter for 17 seconds 5. Inducer – “Run” setting 15 seconds If delayed ignition should occur, the following should be 6. -
Page 32: S-314 Checking Flame Sensor
SERVICING 5. Remove and check the two electrical wires and using If the pressure switch opens after the gas valve has been the VOM check from Common to NO (Normally energized, the control will de-energize the gas valve and Open), it should read closed (with I.D. motor running). run the indoor blower through the heat off delay. - Page 33 SERVICING 9. If the microamp reading is less than the minimum specified, check for high resistance wiring connections, the distance (3/16”) between the sensor and burner, flame sensor connections, dirty flame sensor or poor grounding. 10. If no reading, check for continuity on all components and if good - replace ignition control module.
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Page 34: Troubleshooting Charts
TROUBLESHOOTING CHARTS PCBBL216 ULN CONTROL ERROR CODES MINIMUM DESCRIPTION COLOR POSSIBLE CAUSES CORRECTIVE ACTIONS ACTIVITY LOCKOUT PERIOD No 240 volt power to unit • Confirm 240- and 24-volt power to integrated • NO 24 VAC POWER or 24 volt power to control control board. - Page 35 TROUBLESHOOTING CHARTS MINIMUM DESCRIPTION COLOR POSSIBLE CAUSES CORRECTIVE ACTIONS ACTIVITY LOCKOUT PERIOD OEM FACTORY TEST STEADY ON AMBER MODE RAPID FIELD TEST MODE AMBER FLASH • Flame sensor incorrectly • Inspect for proper sensor alignment. positioned in burner • Clean flame rod. flame.
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Page 36: Wiring Diagrams
HIGH VOLTAGE! ISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT ULTIPLE POWER SOURCES MAY BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH LINE VOLTAGE 208-230V/1PH/60Hz PLM PLF PCBBL216 PS VCC t = 180s PLM PLF COMP NC BTS... - Page 37 HIGH VOLTAGE! ISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT ULTIPLE POWER SOURCES MAY BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH LINE VOLTAGE 208-230V/3PH/60Hz PLM PLF PCBBL216 PS VCC PLM PLF t = 180s COMP NC BTS NC BTS...
- Page 38 HIGH VOLTAGE! ISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT ULTIPLE POWER SOURCES MAY BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH LINE VOLTAGE 208-230V/3PH/60Hz PLM PLF PCBBL216 P SG COMP YL YL PS VCC PLM PLF NC BTS...
- Page 39 HIGH VOLTAGE! ISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT ULTIPLE POWER SOURCES MAY BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH LINE VOLTAGE 208-230V/1PH/60Hz PLM PLF PCBBL216 COMP PS VCC PLM PLF NC BTS t = 180s NC BTS...
- Page 40 HIGH VOLTAGE! ISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT ULTIPLE POWER SOURCES MAY BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH LINE VOLTAGE 208-230V/1PH/60Hz VSTB t = 180s 24 VAC HUMIDISTAT THERMOSTATS COMP PLM PLF PCBBL216...
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Page 41: Scheduled Maintenance
SCHEDULED MAINTENANCE Package gas units require regularly scheduled maintenance 8. Check the combustion chamber (Heat Exchanger) for to preserve high performance standards, prolong the soot, scale, etc. Inspect all burners for lint and proper service life of the equipment, and lessen the chances of positioning. - Page 42 SCHEDULED MAINTENANCE It is also important to confirm the airflow (CFM) is within 8. Should the figure you calculated not fall within five the temperature rise range (see Airflow Data in spec sheet) (5) percent of the nameplate rating of the unit, adjust and external static pressure range (approximately 0.5”...
- Page 43 SCHEDULED MAINTENANCE Table 2...