Daikin DM96SE U Series Service Instructions Manual
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Daikin DM96SE U Series Service Instructions Manual

Daikin DM96SE U Series Service Instructions Manual

96% single stage ultra-low nox gas furnaces
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Service Instructions
96% Single Stage
ONLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL,
ADJUST, SERVICE, MAINTENANCE 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
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,
MAINTENANCE 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
PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
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.
The material in this manual does not supercede manufacturer's installation and operation instructions.
Our continuing commitment to quality products may mean a change in specifications without notice.
©2019 - 2020, 2022
Ultra-Low NOx Gas Furnaces
DM96SE*U & DM96SN*U
WARNING
19001 Kermier Rd. Waller, Tx 77484
www.daikincomfort.com
DO NOT BYPASS SAFETY DEVICES.
WARNING
RSD6612016r3
June 2022

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Summary of Contents for Daikin DM96SE U Series

  • Page 1 INJURY OR DEATH. 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.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS TROUBLESHOOTING ........15 - 19 IMPORTANT INFORMATION ......2 - 5 SERVICING ..........20 - 30 PRODUCT IDENTIFICATION ......5 - 6 WIRING DIAGRAM ........31 - 32 MAINTENANCE ..........13 - 14 IMPORTANT INFORMATION Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that during its lifetime a product may require service.

  • Page 3: Important Information

    IMPORTANT INFORMATION To locate an authorized servicer, please consult your telephone book or the dealer from whom you purchased this product. For further assistance, please contact: CONSUMER INFORMATION LINE DAIKIN BRAND PRODUCTS TOLL FREE 1-855-770-5678 (U.S. only) email us at: customerservice@daikincomfort.com...
  • Page 4 IMPORTANT INFORMATION CO can cause serious illness including permanent brain damage or death. B10259-216 Advertencia especial para la instalación de calentadores ó manejadoras de aire en áreas cerradas como estacionamientos ó cuartos de servicio. Las emisiones de monóxido de carbono pueden circular a través del aparato cuando se opera en cualquier modo.

  • Page 5: Product Identification

    PRODUCT IDENTIFICATION The model and manufacturing number are used for positive identification of component parts used in manufacturing. Please use these numbers when requesting service or parts information. 7,8,9 Brand Configura�on AFUE U-Ultra 14ng/J) Gas Valve S - Single Stage Motor 3 - 12 MBTU/h...
  • Page 6 PRODUCT IDENTIFICATION MODEL MFG # DESCRIPTION DM96SE0403BU AA Daikin 96% Ultra-Low NOx Gas Furnace: This furnace complies with the DM96SE0603BU AA SCAQMD Rule 1111 14 ng/J NOx emission limit. Upflow/Horizontal Left and DM96SE*U DM96SE0805CU AA Right, Induced Draft, Nidec multi-speed ECM motor. Stainless Steel tubular...
  • Page 7 Safety Product Application Please adhere to the following warnings and cautions when This product is designed for use as a residential home gas installing, adjusting, altering, servicing, or operating the furnace. It is not designed or certified for use in mobile home, furnace.
  • Page 8 American National Standards Institute WARNING 25 West 43 Street, 4 Floor New York, NY 10036 O NOT OPERATE THE FURNACE WITH THE RAIN CAP REMOVED AS RECIRUCLATION OF THE FLUE GASES MAY OCCUR. ATER MAY ALSO National Fire Protection Association COLLECT INSIDE THE LARGER COMBUSTIN AIR PIPE AND FLOW TO THE 1 Batterymarch Park BURNER ENCLOSURE.

  • Page 9: High Altitude

    COMBUSTION AIR INTAKE PIPE OPTIONS: HIGH ALTITUDE The RF000142 coupling can be secured directly to the The furnace, as shipped, requires no change to run furnace intake coupling if condensation is occurring in the between 0-4500 feet. at all altitudes the air temperature combustion air inlet pipe.

  • Page 10: Electrical Connections

    The gas valve has a manual ON/OFF control located on the valve itself. This control may be set only to the “ON” or WARNING “OFF” position. Refer to the Lighting Instructions Label or the “Putting the Furnace Into Operation” section of this manual F THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWED EXACTLY, A or the installation instructions for use of this control during FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL...

  • Page 11: Volt Thermostat Wiring

    The accessory load specifications are as follows: WARNING Turn OFF power to the furnace before installing any accessories. Follow the humidifier or air cleaner manufacturers’ instructions for HIGH VOLTAGE locating, mounting, grounding, and controlling these accessories. ISCONNECT POWER BEFORE SERVICING OR Accessory wiring connections are to be made through the 1/4"...
  • Page 12 • R and W thermostat contacts close, initiating a call for heat. terminals are de-energized. • Integrated control module performs safety circuit checks. • Furnace awaits the next call from thermostat. • Pressure Sensor Verification: The control operates the Fan Only Mode inducer in a manner to verify the pressure sensor null value The normal operational sequence in Fan Only Mode is as and span operation are within specification.

  • Page 13: Maintenance

    MAINTENANCE Maintenance WARNING Improper filter maintenance is the most common cause of inadequate heating or cooling performance. Filters should HIGH VOLTAGE be cleaned (permanent) or replaced (disposable) every two ISCONNECT POWER BEFORE SERVICING OR months or as required. INSTALLING THIS UNIT. ULTIPLE POWER SOURCES MAY BE PRESENT.
  • Page 14 MAINTENANCE To find the BTU input, multiply the number of cubic feet of DM96SE0403BU AA 1 ‐ 16 X 25 Side or 1 ‐ 16 X 25 Bottom Return gas consumed per hour by the heating value of the gas being DM96SE0603BU AA 1 ‐ 16 X 25 Side or 1 ‐ 16 X 25 Bottom Return used. (The calorific value of the gas being used is found by DM96SE0805CU AA 2 ‐ 16 X 25 Side or 1 ‐ 20 X 25 Bottom Return contacting your local utility.)

  • Page 15: Troubleshooting

    TROUBLESHOOTING DM96SE*U...
  • Page 16 TROUBLESHOOTING DM96SE*U...
  • Page 17 TROUBLESHOOTING DM96SE*U Fault Code Recall Function: When the SW1 button is pressed momentarily, the control displays the last five (5) fault codes recorded in non-vol- atile memory upon demand. Operation: Any time the control is powered, the fault code history can be retieved for display by depressing and releasing the SW1 button once (less than 5 seconds);...

  • Page 18: Troubleshooting

    TROUBLESHOOTING DM96SN*U Symptom LED Status Fault Description Corrective Actions Stand-by Mode Normal Operation None  Normal Operation Furnace fails to operate Internal Control Fault Replace control board  Locate and correct gas interruption Furnace lockout due to an excessive number of ignition “retries” (3 Replace or realign igniter total) Check flame sense signal, clean sensor if coated or oxidized...
  • Page 19 TROUBLESHOOTING DM96SN*U Symptom LED Status Fault Description Corrective Actions Polarity of 115 volt AC is reversed Correct polarity, check and correct wiring if necessary Furnace fails to operate  Poor unit ground Verify proper ground, correct if necessary Gas valve is energized when it should not be Check wiring in gas valve circuit Furnace fails to operate ...

  • Page 20: Servicing

    SERVICING CUBIC FEET GAS RATE -- CUBIC FEET PER HOUR Size of Test Dial Size of Test Dial Seconds for Seconds for cu/ft cu/ft cu/ft cu/ft cu/ft cu/ft cu/ft cu/ft cu/ft cu/ft Revolution Revolution 1800 1636 1500 1385 1286 1200 1125 1059 1000...

  • Page 21: Combustion Air Connection

    SERVICING Component I.D. VENT PIPE CONNECTION COMBUSTION AIR CONNECTION PRESSURE SWITCHES BURNER ASSEMBLY GAS VALVE DRAFT INDUCER PRESSURE TRANSDUCER INTEGRATED CONTROL BOARD CONTROL TRANSFORMER...

  • Page 22: Checking Voltage

    SERVICING CHECKING THERMOSTAT, WIRING CHECKING VOLTAGE AND ANTICIPATOR WARNING HIGH VOLTAGE THERMOSTAT AND WIRING ISCONNECT POWER BEFORE SERVICING OR CHANGING ANY ELECTRICAL WIRING. ULTIPLE POWER SOURCES MAY BE PRESENT. AILURE TO DO SO MAY CAUSE WARNING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. 1.

  • Page 23: Checking Duct Static

    SERVICING blower motor or induced draft blower motor, reinstall WARNING blower compartment door. 6. Turn on electrical power and verify proper unit operation. HIGH VOLTAGE ISCONNECT POWER BEFORE SERVICING OR CHANGING ANY ELECTRICAL WIRING. ULTIPLE POWER SOURCES MAY BE PRESENT. AILURE TO DO SO MAY CAUSE WARNING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

  • Page 24: Checking Primary Limit Control

    SERVICING Checking Temperature Rise SUPPLY 3. Subtract the return air temperature from the supply air temperature to determine the air temperature rise. Allow adequate time for thermometer readings to stabilize. CUTAWAY OF DUCTWORK 4. Adjust temperature rise by adjusting the circulator blower TO EXPOSE COIL speed.

  • Page 25: Checking Auxiliary Limit Control

    SERVICING WARNING HIGH VOLTAGE ISCONNECT 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. VOLT / OHM METER Testing Primary Limit Control RESET CHECKING AUXILIARY LIMIT CONTROL BUTTON COLOR IDENTIFYING...

  • Page 26: Checking Gas Pressure

    SERVICING 5. If the windings have a continuity reading, reconnect Orifices should be treated with care in order to prevent dam- wires. Turn power on to the furnace and turn the age. They should be removed and installed with a box-end thermostat on in the heating mode.
  • Page 27 SERVICING Gas Manifold Pressure Measurement and Adjustment CAUTION O PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE, THE GAS MANIFOLD PRESSURE MUST BE AS SPECIFIED ON THE UNIT RATING PLATE. NLY MINOR ADJUSTMENTS SHOULD BE MADE BY ADJUSTING THE GAS VALVE PRESSURE REGULATOR. NOTE: Use apapter kit #0151K00000S to measure gas pressure on White-Rodgers 36J22 gas valves.

  • Page 28: Checking For Delayed Ignition

    SERVICING d. Turn on power and close thermostat “R” and “W” con- 120V Silicon Nitride Igniter - ULN furnaces use a 120V tacts to provide a call for low stage heat. silicone nitride igniter, part #0130F00717. The normal op- erating temperature is approximately 2156°F - 2678°F. At e.

  • Page 29: Checking Integrated Ignition Control Boards

    SERVICING DM96SE*U WITH PCBBF158-160 CONTROL 1. Check for 120 volts from Line 1 (Hot) to Line 2 (Neutral) at the ignition control. No voltage, check the door switch BOARDS connections and wire harness for continuity. FIELD TEST MODE 2. Check for 24 volts from W to C terminal on the ignition Function: When the SW1 button is pressed and held until control.
  • Page 30 SERVICING D M96S N*U W I T H P C B B F241 C O N T R O L BOARD Control Board Status Menu Control Board Main Menu Main Menu Option Menu Description of System Status Description Default LED Display Display Display i dl...

  • Page 31: Wiring Diagram

    WIRING DIAGRAMS DM96SE*U AUTO REST BURNER TEMPERATURE CONTROL INTEGRATED CONTROL MODULE PRESSURE SWITCH TO MICRO AUTO RESET BAFFLE LIMIT MV(8) VALVE PRESSURE TRANSDUCER MV(12) PT (3) PT (2) PT (1) MICRO HLI (7) HLO (4) AUTO RESET AUXILIARY LIMIT CONTROLS RO2 (6) RO1 (5) TH (10)
  • Page 32 WIRING DIAGRAMS DM96SN*U PRESSURE TRANSDUCER 115 VAC/ 1 Ø /60 HZ POWER SUPPLY WITH OVERCURRENT PROTECTION DEVICE ID BLOWER PRESSURE SWITCH DISCONNECT TR (2) GAS VALVE INTEGRATED CONTROL MODULE AUTO RESET PRIMARY AUTO RESET LIMIT CONTROL SURFACE BAFFLE LIMIT IGNITER 2 CIRCUIT MVC (5) VALVE...

  • Page 33: Customer Feedback

    CUSTOMER FEEDBACK Daikin Comfort Technologies is very interested in all product comments. Please fill out the feedback form on the following link: https://daikincomfort.com/contact-us You can also scan the QR code on the right to be directed to the feedback page.

This manual is also suitable for:

Dm96sn u seriesDm96se0403buDm96sn0403buDm96se0603buDm96sn0603buDm96se0805cu ... Show all

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