Daikin DM80SE Operating instructions

Our continuing commitment to quality products may mean a change in specifications without notice.
©2019
19001 Kermier Rd., Waller, TX 77484
www.daikincomfort.com
RSD6621006r1
December 2019
Service Instructions
Daikin 80% Single Stage Gas Furnaces
DM80SE, DC80SE
& Accessories
O NLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL , ADJUST , SERVICE
OR REPAIR ( HEREINAFTER , “ SERVICE ”) THE EQUIPMENT SPECIFIED IN THIS
MANUAL SHOULD SERVICE THE EQUIPMENT . T HE MANUFACTURER WILL NOT
BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM
IMPROPER SERVICE OR SERVICE PROCEDURES . I F YOU SERVICE THIS UNIT ,
YOU ASSUME RESPONSIBILITY FOR ANY INJURY OR PROPERTY DAMAGE
WHICH MAY RESULT . I N ADDITION , IN JURISDICTIONS THAT REQUIRE ONE OR
MORE LICENSES TO SERVICE THE EQUIPMENT SPECIFIED IN THIS MANUAL ,
ONLY LICENSED PERSONNEL SHOULD SERVICE THE EQUIPMENT . I MPROPER
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 PRODUCT DAMAGE , PROPERTY DAMAGE ,
PERSONAL INJURY OR DEATH .
Cancer and Reproductive Harm -
www.P65Warnings.ca.gov
PROP 65 WARNING
FOR CALIFORNIA CONSUMERS
0140M00517-A
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 manufacturers installation and operation instructions.

2
IMPORTANTINFORMATION
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. Products should be serviced only by a qualified service
technician who is familiar with the safety procedures required in the repair and who is equipped with the proper tools,
parts, testing instruments and the appropriate service manual. 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
TO 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
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.
IMPORTANT INFORMATION ......................... 2 - 4
PRODUCT IDENTIFICATION .......................... 5-7
ACCESSORIES ............................................... 8-9
OPERATING INSTRUCTIONS .......................... 13
PRODUCT DESIGN .......................................... 18
SYSTEM OPERATION ...................................... 19
TROUBLESHOOTING ................................20 - 22
POLARIZATION and PHASING .......................... 23
MAINTENANCE ...........................................24 - 25
SERVICING .................................................26 - 41
SERVICING TABLE OF CONTENTS ................28
SCHEMATICS .................................................... 42
WIRING DIAGRAMS................................ ...... .....43

3
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 PRODUCTS
TOLL FREE
1-877-254-4729 (U.S. only)
email us at: [email protected]
fax us at: [phone]
(Not a technical assistance line for dealers.)
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.

4
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
Le monoxyde de carbone peut causer des maladies graves telles que
des dommages permanents au cerveau et meme la mort.
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
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.
D M 80 S E 060 3 B N A A
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Brand Minor Revision
D - Daikin A - Initial Release
B - 1st Revision
Configuration
M - Upflow/Horizontal Major R evis ion
C - Downflow/Horizontal A - Initial Release
K - Dedicated Upflow B - 1st Revision
D - Dedicated Downflow
Nox
AFUE N - Natural Gas
97 - 97% AFUE X - Low NOx
80 - 80% AFUE
Cabinet Width
Gas Valve A - 14"
M - Modulating B - 17.5"
V - 2 Stage C - 21"
S - Single Stage D - 24.5"
Maximum CFM
Motor 3 - 1200 CFM
C - Variable Speed/ComfortNet 4 - 1600 CFM
E - High Efficiency 5 - 2000 CFM
S - Single Speed
MBTU/h
40 - 40,000
60 - 60,000
80 - 80,000
100 - 100,000
120 - 120,000

PRODUCT IDENTIFICATION
6
MODEL # MFG # DESCRIPTION
AFE18-60A N/ A
Fossil Fuel Kit. The AFE18-60A control is d esigned for use where the indoor coil is located
above/d ownstream of a gas or fossil fuel furnace when used with a heat pump. It will operate
with sing le and two stage heat pumps and single and two stage furnaces. The AFE18-60A
control wi ll turn the he at pump unit off when the furnace is turned on. An anti-short cycle feature
initiates a 3 min ute timed off delay when the compressor goes off.
MODEL # MFG # DESCRIPTION
HANG21 N/ A
High Altitude Natural Gas Kit.
The kit is designed to convert 80% ga s furnace models fired at
20,000 Btu's per cell for higher altitudes. This kit is required when installing these furnaces
above their maximum rated altitude.
MODEL #
DM80SE0403A*
DM80SE0603A*
DM80SE0604B*
DM80SE0803B*
DM80SE0804B*
DM80SE0805C*
DM80SE1005C*
DM80SE1205D*
80% GAS FURNACES
DAIKIN 80% SINGLE STAGE GAS FURNACE, FOR INSTALLATION IN UPFLOW / HORIZONTAL
LEFT OR RIGHT. SILICON NITRIDE IGNITER. MULTISPEED ECM BLOWER MOTOR, STAINLESS
STEEL TUBULAR HEAT EXCHANGER. COMES IN 4 CHASSIS SIZES "A" = 14" , "B" = 17.5" , "C" =
21" , "D" = 24.5".
MODEL #
DC80SE0403A*
DC80SE0603A*
DC80SE0804B*
DC80SE1005C*
80% GAS FURNACES
DAIKIN DOWNFLOW MODELS WITH MULTISPEED ECM BLOWER MOTOR. STAINLESS STEEL
TUBULAR HEAT EXCHANGER. SILICON NITRIDE IGNITOR. CHASSIS SIZEZ "A" WIDTH = 14" ,
"B" WIDTH = 17.5" , "C" WIDTH = 21".
MODEL # MFG # DESCRIPTION
EFR01 P1221001
P1221002F
External Filter Rack Kit. For use with upflow furnace models. This kit is intended to
provide a location, external to the furnace casing, for installation of a permanent filter.
The rack is mounted over the indoor air blower compartment area of either side panel,
and provide filter retention as well as a location for attaching return air ductwork..
TK400 N/A
Twinning kit from Jackson Systems. Allows a single thermostat to control two
separate furnaces / HVAC units. Can be expanded to control four units. When twinning
cooling systems we recommend the use of coil freeze stats. (FSK01A) For use with
single stage PSC furnaces built with PCBBF145 control board
Twinning kit from Jackson Systems. Allows a single thermostat to control two
separate furnaces / HVAC units. Can be expanded to control four units. When twinning
cooling systems we recommend the use of coil freeze stats. (FSK01A) For use with
single stage furnaces built with PCBBF145 control board

PRODUCT IDENTIFICATION
7
MODEL # MFG.# DESCRIPTION
LPLP03 N/A
LP Gas Low Pressure Kit. Designed for application on Daikin's gas fired furnaceproducts installed on LP
gas listed in this manual. This kit includes harness adapters to work with White-Rodgers single & two
stage gas valves. Honewell single and two-stage
LPT-03 N/A
LP Conversion Kit. This kit converts only single stage gas fired units from nautal to propane gas. This kit
supports both Whi te-Rodgers and Honeywell single s ta ge valves. The conversion from natural ga s (as
shipped from the factory) to propane gas require
MVK-01A
MVK-02A N/A
Masonry Vent Kit. For use with Daikin 80% AFUE, 33"tall "H" and "S" model furnaces installed in the
upflow position only and will only be used with interior masonry chimneys. Kit incorporates a flue high
l i mi t s afety s wi tch whi c h wi l l i nter rupt power to
SBT 14
SBT 17
SBT 21
N/A Downflow subbase. For us e with Dai ki n 80% dedi cated downflow furna ce model s. Thes e ki ts are
available for the following furnace widths: 14" wide (SBT 14) 17.5" wide (SBT 17) and 21" wide (SBT21).

ACCESSORIES
8
MODEL
NUM BER
EFR-01
AFE18-60A
LPLP03 HANG21
MVK-01 MVK-02
SBT14 SBT17 SBT21
TK-400 LPT-03
Description
EFR External Filter
Rack
Dual Fuel Kit
LP Low Pressure
Shut Off Kit
High Altitude Orifices
W/Pressure Switch
Masonry Vent Kit Masonry Vent Kit
Counterflow Base Counterflow Base Counterflow Base
Twinning Kit
LP Conversion Kit
DM80SE0403AX**
···
(1)
··
(2)
DM80SE0603AX**
···
(1)
··
(2)
DM80SE0604BX**
···
(1)
··
(2)
DM80SE0804BX**
···
(1)
··
(2)
DM80SE0805CX**
···
(1)
··
(2)
DM80SE1005CX**
···
(1)
··
(2)
DM80SE1205DX**
···
(1)
··
(2)
DC80SE0403AX**
·· · ·
(2)
DC80SE0603AX**
·· · ·
(2)
DC80SE0804BX**
·· · ·
(2)
DC90SE1005CX**
·· ··
(2)
(1) 5,500 - 10,000 ft. Altitude
(2) W/R and H/W Gas Valves
DAIKIN DM80SE DC80SE Model Furnace Accessories

ACCESSORIES
9
EXTERNAL FILTER RACK KIT
( EFR01 )
BLOWER DECK
SCREWS
SLOTS IN FILTER
CLEAR SCREWS
ON UNIT
FRONT
OF UNIT
RETURN AIR
CUTOUT AREA
LOWER EDGE
SCREW
FILTER RACK ASSEMBLY
(FACE FILTER OPENING
TOWARDS FRONT
OF UNIT)
UNIT SIDE
PANEL
BASE
OF UNIT
80% Upflow Model Furnaces
EFR01 EXTERNAL FILTER RACK KIT
Used on Models

ACCESSORY WIRING DIAGRAMS
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.
10
+5VDC
24VAC
G
POWER SUPPLY
INPUT
POWER SUPPLY C OMMON
OUT TO HP CONTROL
P3-1
6.8K
P3-7
Y-HP
P1-6
P1-4
COMPRESSOR OUTPUT
P1-7
O
POWER SUPPLY OUT
TO THERMOSTAT
24VAC
Q2
K3
W1
PO WER S UPP LY I NPUT
(COMMON)
+VDC
E/W1
Y
P2-8
CALL FOR
REVERSING VALVE
P3-5
C
C
BLOWER FAN DEMAND
OUTPUT
P3-3
P1-8
Y-STAT
Y-FURN
C
P3-2
P1-1
P3-8
REVERSING VALVE
OUTPUT
BREAK FOR ODT
FURNACE DEMAND
OUTPUT
P1-3
R
24VAC
K4
HP CALL FOR FUR NACE
(DURING DEFROST)
W2
Y2-STAT
Y2-FURN
CALL FOR
COMPRESSOR
P2-7
P3-6
+VDC
Y2
O
REVERSING
VALVE OUTPUT
Q1
Y
P2-4
K1
OT-NO
Y
P2-9
CALL FOR 2ND STAGE
COMPRESSOR
Y2
1.0K
G-FURN
P2-1
C
OT-C
C
SECOND STAGE
COMPRESSOR OUTPUT
G
CALL FOR
EM ERGENC Y HE AT
W1-FURN
W2-HP
F1 3A
OT-NC
24VAC
2ND STAGE C OMPRESSOR
DEMAND OUTPUT
W1
CALL FOR
FURNA CE HEAT
6.8K
G-STAT
+VDC
P3-4
F
U
R
N
A
C
E
P2-6
K2
ODT (OUTDOOR
THERMOSTAT)
Y
R
SECOND STAGE FURNACE
DEMAND OUTPUT
MICR OP ROCESSO R
Y2-HP
P1-5
CALL FOR 2ND STAGE
FURNA CE HEAT
O
W2
CALL FOR
BLOWER FAN
T
H
E
R
M
O
S
T
A
T
P2-5
1 2
R
Y2
POWER
SUPPLY
COMPRESSOR
CONTACTOR OUTPUT
O
H
E
A
T
P
U
M
P
P2-3
+5VDC
W2
P3-9
P2-2
E
POWER SUPPLY C OMMON
OUT TO THERMOSTAT
POWER SUPPLY OUT
TO HP CONTROL
C
P1-2
ALL FUEL SYSTEM CONTROL BOARD - AFE18-60A
This wiring diagram is for reference only. Not all wiring is as shown above.
Refer to the appropriate wiring diagram for the unit being serviced.
(For use with Heat Pumps in conjunction with 80% or 90% Single-Stage or Two-Stage Furnaces)