Daikin DM80SE Operating instructions
RSD6621008r3
June 2022
Service Instructions
80% Single Stage Ultra-Low NOx Gas Furnaces
DM80SE*U & DM80SN*U
www.daikincomfort.com
WARNING
DO NOT BYPASS SAFETY DEVICES.
ONLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL,
ADJUST, SERVICE, MAINTENANCE OR REPAIR (HEREIN-
AFTER, “SERVICE”) THE EQUIPMENT SPECIFIED IN THIS
MANUAL SHOULD SERVICE THE EQUIPMENT. THE MANU-
FACTURER WILL NOT BE RESPONSIBLE FOR ANY INJURY
OR PROPERTY DAMAGE ARISING FROM IMPROPER SER-
VICE 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.
WARNING
2
IMPORTANT INFORMATION
REVIEW ALL SERVICE INFORMATION IN THE APPROPRIATE
SERVICE MANUAL BEFORE BEGINNING REPAIRS.
IMPORTANT NOTICES FOR CONSUMERS AND SERVICERS
RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS
WARNING
T
O PREVENT THE RISK OF PROPERTY 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.
TABLE OF CONTENTS
WARNING
HIGH
VOLTAGE
D
ISCONNECT
ALL
POWER BEFORE SERVICING OR
INSTALLING THIS UNIT.
M
ULTIPLE POWER SOURCES MAY
BE PRESENT.
F
AILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH.
5
6
15 - 19
20 - 21
22 - 31
32 - 33
3
IMPORTANT INFORMATION
-
Outside the U.S., call 1-713-861-2500.
(Not a technical assistance line for dealers.) Your telephone company will bill you for the call.
CONSUMER INFORMATION LINE
DAIKIN BRAND PRODUCTS
TOLL FREE
1-855-770-5678 (U.S. only)
email us at:
fax us at: (731) 856-1821
(Not a technical assistance line for dealers.)
IMPORTANT INFORMATION
B10259-216
CO can cause serious illness including permanent brain
damage or death.
Advertencia especial para la instalación de calentadores ó manejadoras
de aire en áreas cerradas como estacionamientos ó cuartos de servicio.
B10259-216
El monóxido de carbono puede causar enfermedades severas
como daño cerebral permanente ó muerte.
Las emisiones de monóxido de carbono pueden circular a través
del aparato cuando se opera en cualquier modo.
B10259-216
RISQUE D'EMPOISONNEMENT AU MONOXYDE DE CARBONE
Cette ventilation est nécessaire pour éviter le danger d'intoxication
au CO pouvant survenir si un appareil produisant du monoxyde
de carbone continue de fonctionner au sein de la zone confinée.
PRODUCT IDENTIFICATION
5
U - Ultra-Low NOx (14ng/J)
80 - 80% AFUE
B - 17½"
D M 80 S E 60 3 A U * *
1 2 3,4 5 6 7,8,9 10 11 12 13 14
Brand Minor Revision
D - Daikin Brand
B - 1st Revision
Configura�on
Major Revision
B - 1st Revision
AFUE
Nox
Gas Valve Cabinet Width
S - Single Stage A - 14" C - 21"
Motor Maximum CFM
3 - 1200 CFM
4 - 1600 CFM
MBTU/h5 - 2000 CFM
040 - 40,000 BTU/h
060 - 60,000 BTU/h
080 - 80,000 BTU/h
6
tenter
sessayer à
Do not try
Do not
Do not
"B"
to
OPERATING INSTRUCTIONS
SYSTEM OPERATION
Safety
TO PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPER INSTALLATION,
ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE, REFER TO THIS
MANUAL. FOR ADDITIONAL ASSISTANCE OR INFORMATION, CONSULT A
QUALIFIED INSTALLER, SERVICE AGENCY OR THE GAS SUPPLIER.
WARNING
WARNING
T
O PREVENT POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH
DUE TO ELECTRICAL SHOCK, THE FURNACE MUST BE LOCATED TO PROTECT
THE ELECTRICAL COMPONENTS FROM WATER.
Charge (ESD) Precautions
NOTE:
Product Application
not
IMPORTANT NOTE: The 80% furnace cannot be installed
as a direct vent (i.e.., sealed combustion) furnace.
The burner box is present only to help reduce sound
transmission from the burners to the occupied space.
WARNING
P
OSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE,
EXPLOSION, SMOKE, SOOT, CONDENSTAION, ELECTRICAL SHOCK OR CARBON
MONOXIDE MAY RESULT FROM IMPROPER INSTALLATION, REPAIR, OPERATION,
OR MAINTENANCE OF THIS PRODUCT.
WARNING
TO PREVENT PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE,
DO NOT INSTALL THIS FURNACE IN A MOBILE HOME, TRAILER, OR RECREATIONAL
VEHICLE.
WARNING
UPON COMPLETION OF THE FURNACE INSTALLATION, CAREFULLY INSPECT THE
ENTIRE FLUE SYSTEM BOTH INSIDE AND OUTSIDE THE FURNACE TO ASSURE IT
IS PROPERLY SEALED. LEAKS IN THE FLUE SYSTEM CAN RESULT IN SERIOUS
PERSONAL INJURY OR DEATH DUE TO EXPOSURE TO FLUE PRODUCTS,
INCLUDING CARBON MONOXIDE.
SYSTEM OPERATION
8
HIGH ALTITUDE
GAS SUPPLY AND PIPING
CAUTION
TO PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE, THE INLET
GAS SUPPLY PRESSURE MUST BE AS SPECIFIED ON THE UNIT RATING PLATE
WITH ALL OTHER HOUSEHOLD GAS FIRED APPLIANCES OPERATING.
INLET GAS SUPPLY PRESSURE
GAS VALVE
NOTE: The gas supply pressure on White-Rodger "J"
model gas valve, used on single stage furnaces, can be
checked with a gas pressure test kit (Part #0151K00000S)
available through our authorized distributors.
Lighting Instructions Label
GAS PIPING CONNECTIONS
CAUTION
To avoid possible unsatisfactory operation or
equipment damage due to underfiring of equipment,
use the proper size of natural gas piping needed when
running pipe from the meter to the furnace.
1"
10 132 520 1050 1600
20 92 190 350 1100
30 152 285 590 980
63 130 500
50 56 115 215
60 50 105 195 610
96 180 560
80 90 350 530
90 160 320
100 38 150 305
Natural Gas Capacity of Pipe
In Cubic Feet of Gas Per Hour (CFH)
CAUTION
E
DGES OF SHEET METAL HOLES MAY BE SHARP.
U
SE GLOVES A PRECAUTION
WHEN REMOVING HOLE PLUGS.
GAS PIPING CHECKS
SYSTEM OPERATION
9
WARNING
I
F THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWED EXACTLY, A
FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL
INJURY OR LOSS OF LIFE.
–
D
O OT STOROR USSOL OR OTR LBLPORS D
LQUDS T TY OTS OR Y OTR PPL
–
WHAT
TO
DO
IF
YOU
SMELL
GAS
:
•
D
O OT TRY TO LT Y PPL
•
D
O OT TOU Y LTRL ST; DO OT USY
PO YOUR BULD
•
DTLY LL YOUR S SUPPLR ROBORS
PO
OLLOT S SUPPLRS STRUTOS
•
YOU OT R YOUR S SUPPLRLL T R
DPRTT
–
STLLTOD SR UST BPRORD BY QULD STLLR
SR Y OR T S SUPPLR
ELECTRICAL CONNECTIONS
WARNING
T
O AVOID THE RISK OF ELECTRICAL SHOCK, WIRING TO THE UNIT MUST BE
PROPERLY POLARIZED AND GROUNDED.
WARNING
HIGH
VOLTAGE
D
ISCONNECT
ALL
POWER BEFORE SERVICING OR
INSTALLING THIS UNIT.
M
ULTIPLE POWER SOURCES MAY
BE PRESENT.
F
AILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH.
CAUTION
L
ABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS.
W
IRING ERRORS CAN COUSE IMPROPER AND DANGEROUS OPERATION.
V
ERIFY PROPER OPERATION AFTER SERVICING.
WIRING HARNESS
115 VOLT LINE CONNECTIONS
NOTE: Line polarity must be observed when making eld
connections.
CAUTION
E
DGES OF SHEET METAL HOLES MAY BE SHARP.
U
SE GLOVES A PRECAUTION
WHEN REMOVING HOLE PLUGS.
NOTE:
WARNING
T
O AVOID THE RISK OF ELECTRICAL SHOCK, INJURY, OR DEATH, THE
FURNACE MUST BE ELECTRICALLY GROUNDED IN ACCORDANCE WITH LOCAL
CODES OR, IN THEIR ABSENCE, WITH THE LATEST EDITION OF THE
NATIONAL ELECTRIC CODE.
115 VOLT LINE CONNECTION OF ACCESSORIES
(HUMIDIFIER AND ELECTRONIC AIR CLEANER)
WARNING
HIGH VOLTAGE
DISCONNECT ALL POWER BEFORE SERVICING OR
CHANGING ANY ELECTRICAL WIRING. MULTIPLE POWER
SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE
PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
HUMIDIFIER WIRING
SYSTEM OPERATION
10
Accessory Wiring
24 VOLT THERMOSTAT WIRING
NOTE:
THERMOSTAT WIRING - SINGLE-STAGE
Remote
Unit
Room
Thermostat
Room Thermostat
W
W
Typical Field Wiring (24 VAC Control Circuit)
CONTINUOUS FAN OPERATION
heating
CIRCULATOR BLOWER SPEED ADJUSTMENT
WARNING
HIGH
VOLTAGE
E
LECTRICAL COMPONENTS ARE CONTAINED IN BOTH
COMPARTMENTS.
T
O AVOID ELECTRICAL SHOCK, INJURY OR
DEATH, DO NOT REMOVE ANY INTERNAL COMPARTMENT COVERS
OR ATTEMPT ANY ADJUSTMENT.
C
ONTACT A QUALIFIED
SERVICE AGENT AT ONCE IF AN ABNORMAL FLAME
APPEARANCE SHOULD DEVELOP.
DM80SE*U
DM80SN*U with PCBBF241 CONTROL BOARD
MUST
SYSTEM OPERATION
11
Control Board Main Menu
Description
Main Menu
LED
Display
Option Menu
LED Display
Default
i dl
Sr
Od S
65
90
30
60
5
Control Board Status Menu
LED
Display
Description of System Status
888
THERMOSTAT CALL AVAILABLE SPEEDS
(FSd menu)
G
Circulation Speed Table
SYSTEM OPERATION
12
THERMOSTAT CALL
(OdS: Terminal)
AVAILABLE SPEEDS
(AC1 menu)
1AC: Y1
Single Stage Cooling Speed Table
THERMOSTAT CALL
(OdS: Terminal)
AVAILABLE SPEEDS
(AC2 menu)
Two Stage Cooling Speed Table
THERMOSTAT CALL
(OdS: Terminal)
AVAILABLE SPEEDS
(HP1 menu)
1HP: Y1
Single Stage HP Heating Speed Table
THERMOSTAT CALL
(OdS: Terminal)
AVAILABLE SPEEDS
(HP2 menu)
Two Stage HP Heating Speed Table
NOT
SYSTEM OPERATION
13
CIRCULATING AIR AND FILTERS
DUCTWORK - AIR FLOW
Upflow / Horizontal
Models Minimum Recommended Filter Size^
*0403A* 1 - 16 X 25 Side or 1 - 14 X 24 Bottom Return
*0603A* 1 - 16 X 25 Side or 1 - 14 X 24 Bottom Return
*0604A* 1 - 16 X 25 Side or 1 - 16 X 25 Bottom Return
*0804A* 1 - 16 X 25 Side or 1 - 16 X 25 Bottom Return
*0805A* 2 - 16 X 25 Side or 1 - 20 X 25 Bottom Return 1
^Large filters may be used, filters may also be centrally located
1= use 2- 16 X 25 filters and two side returns or 20 X 25 filter on bottom
return if furnace is connected to a cooling unit over 4 tons nominal capacity
Upow furnaces with air delivery of less than 1800 CFM:
Upow furnaces with air delivery of 1800 CFM or higher:
NOTE: Ductwork must never
be attached to the back of the furnace.
55°F and 100°F
UPRIGHT FILTER INSTALLATIONS
ADDITIONAL FILTERING ACCESSORIES
External Filter Rack Kit (EFR01)
NORMAL SEQUENCE OF OPERATION
•
•
•
•
•
SYSTEM OPERATION
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
TROUBLESHOOTING
15
DM80SE*U
TROUBLESHOOTING
16
DM80SE*U
TROUBLESHOOTING
Fault Code Recall
Fault Code Clear
DM80SE*U DM80SE*U
TROUBLESHOOTING
18
DM80SN*U
Symptom LED Status Fault Description Corrective Actions
Normal Operation
Stand-by Mode
Normal Operation
None
Furnace fails to operate Internal Control Fault Replace control board
Furnace fails to operate
Furnace lockout due to an excessive number of ignition “retries” (3
total)
Failure to establish flame
Loss of flame after establishment
Locate and correct gas interruption
Replace or realign igniter
Check flame sense signal, clean sensor if coated or oxidized
Check flue piping for blockage, proper length, elbows, and
termination
Verify proper induced draft blower performance
Furnace fails to operate
Draft Inducer pressure switch circuit is closed at start of heating cycle
Draft Inducer pressure switch contacts sticking
Short in pressure switch circuit wiring
Replace Draft Inducer pressure switch
Repair short in wiring
Induced draft blower runs
continuously with no
operation
Draft Inducer pressure switch circuit is not closed
Pressure switch hose blocked pinched, or connected improperly
Blocked flue and/or inlet air or weak induced draft blower
Incorrect pressure switch set point or malfunctioning switch contacts
Loose or improperly connected wiring in high limit circuit
Inspect pressure switch hose, repair/replace if necessary
Inspect flue and/or inlet air for blockage, proper length, elbows,
and termination
Check induced draft blower performance, correct as neccesary
Check pressure switch operation, replace as needed
Tighten or correct wiring connection
Circulator blower runs
continuously
No furnace operation
Primary limit circuit is open
Insufficient conditioned air over the heat exchanger
Blocked filters, restrictive ductwork, improper circulator blower speed,
or failed circulator blower motor
Loose or improperly connected wiring in high
limit circuit
Check filters and ductwork for blockage
Clean filters or remove obstruction
Check circulator blower speed and performance
Correct speed or replace blower motor if necessary
Tighten or correct wiring connection
Induced draft blower and
circulator blower runs
continuously
No furnace operation
Flame sensed with no call for heat
Short to ground in flame sense circuit
Lingering burner flame
Slow closing gas valve
Correct short at flame sensor or in flame sensor wiring
Check for lingering or lazy flame
Verify proper operation of gas valve
No furnace operation
Open fuse
Short in low voltage wiring
Replace fuse
Locate and correct short in low voltage wiring
Furnace operates but
shows weak flame signal
fault
Flame sense micro amp signal is minimal
Flame sensor is coated/oxidized
Flame sensor incorrectly positioned in burner flame
Lazy burner flame due to improper gas pressure or combustion air
Clean flame sensor if coated or oxidized
Inspect for proper flame sensor alignment
Check inlet air for blockage
Compare current gas pressure to rating plate and adjust as needed
Furnace fails to operate
Problem with igniter circuit
Improperly connected or shorted igniter
Poor unit ground
Igniter relay fault on integrated control module
Check and correct wiring from integrated control module
to igniter
Diagnose and replace shorted igniter as needed
Verify and correct unit ground wiring if needed
Check igniter output from control, replace if necessary
TROUBLESHOOTING
19
DM80SN*U DM80SN*U
Symptom LED Status Fault Description Corrective Actions
Furnace fails to operate
Polarity of 115 volt AC is reversed
Poor unit ground
Correct polarity, check and correct wiring if necessary
Verify proper ground, correct if necessary
Furnace fails to operate
Gas valve is energized when it should not be
Internal gas valve error
Check wiring in gas valve circuit
Replace integrated control board
Furnace fails to operate
Gas valve is not energized when it should be
External Gas Valve Error
Check wiring in gas valve circuit
Replace integrated control board
Furnace fails to operate Auxiliary limit switch (blower compartment)
circuit is open
Furnace power was turned off during heat cycle
Blower not operating during heat
Faulty aux limit or wiring
Furnace fails to operate Grounding Error Check grounding
Furnace fails to operate Burner limit switch circuit is open
Check and correct gas supply pressure
Check flue and air inlet for blockage, proper length, elbows, and
termination
Check wiring connection in limit circuit
Check burner temperature switch, replace if necessary
Furnace fails to operate Redundant relay open alarm Replace integrated control board
Furnace fails to operate Redundant relay stuck closed alarm Replace integrated control board
Furnace fails to operate Inducer communication alarm
Check Red, Black, White harness & connections to inducer &
control board
Furnace fails to operate APS reference error
Check Red, Black, Green harness & connections to pressure
sensor & control board
Replace pressure sensor
Furnace fails to operate APS null error
Check Red, Black, Green harness & connections to pressure
sensor & control board
Check pressure hoses to pressure sensor and pressure switch
Furnace fails to operate APS span error
Check Red, Black, Green harness & connections to pressure
sensor & control board
Check pressure hoses to pressure sensor and pressure switch
Furnace fails to operate APS pressure error
Check Red, Black, Green harness & connections to pressure
sensor & control board
Replace pressure sensor
Furnace fails to operate APS input error
Check Red, Black, Green harness & connections to pressure
sensor & control board
Replace pressure sensor
Twinning error
Furnace fails to operate Low circulator current
Check motor 120V line wire is connected to terminal inside
current transformer loop
Check wire connections to motor and PCB
Furnace fails to operate Circulator current unexpected Check motor 120V line wire is connected to terminal inside
current transformer loop
Furnace fails to operate No shared data Populate shared data set using memory card
MAINTENANCE
20
WARNING
HIGH VOLTAGE
DISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY
BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH.
I
F YOU MUST HANDLE THE ITNITOR, HANDLE WITH CARE.
T
OUCHING
THE IGNITOR BODY WITH BARE FINGERS, ROUGH HANDLING, OR
VIBRATION COULD RESULT IN EARLY IGNITOR FAILURE.
O
NLY A
QUALIFIED SERVICER SHOULD EVER HANDLE THE IGNITOR.
CAUTION
ANNUAL INSPECTION
•
•
•
•
•
AIR FILTER
N
EVER OPERATE FURNACE WIHTOUT A FILTER INSTALLED AS DUST
AND LINT WILL BUILD UP ON INTERNAL PARTS RESULTING IN LOSS OF
EFFICIENCY, EQUIPMENT DAMAMGE, AND POSSIBLE FIRE.
WARNING
Maintenance
Horizontal Unit Filter Removal
INDUCED DRAFT AND CIRCULATION BLOWERS
FLAME SENSOR (QUALIFIED SERVICER ONLY)
-
HEATING PERFORMANCE TEST
Service
Problem Analysis Guide.
EXAMPLE:
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