This Service Manual provides the necessary information to
service, repair, and maintain the DLF4(A,H), DLC4(A/H)
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS1........................
SPECIFICATIONS2..................................
MODEL / SERIAL NUMBER NOMENCLATURE16.......
STANDARD FEATURES AND ACCESSORIES17........
DIMENSIONS18.....................................
CLEARANCES22....................................
SYSTEM OPERATING ENVELOPE23..................
ELECTRICAL DATA25...............................
CONNECTION DIAGRAMS26.........................
WIRING DIAGRAMS27...............................
REFRIGERATION SYSTEM DIAGRAM36...............
REFRIGERANT LINES38.............................
SYSTEM EVACUATION AND CHARGING39............
CONTROL SYSTEM40...............................
MODES OF OPERATION44...........................
TROUBLESHOOTING47.............................
DIAGNOSTIC CHARTS48............................
MALFUNCTION ANALYSIS55.........................
APPENDIX79.......................................
SAFETY CONSIDERATIONS
Follow all safety codes. Wear safety glasses and work
gloves. Keep quenching cloth and fire extinguisher nearby
when brazing. Use care in handling, rigging, and setting
bulky equipment.
Read these instructions thoroughly and follow all warnings
or cautions included in literature and attached to the unit.
Consult local building codes and National Electrical Code
(NEC) for special requirements. In Canada, refer to current
editions of the Canadian Electrical Code, CSA 22.1.
Recognize safety information. This is the safety−alert
!
!
symbol
instructions or manuals, be alert to the potential for personal
injury.Understand these signal words: DANGER,
WARNING, and CAUTION. These words are used with the
safety−alert symbol. DANGER identifies the most serious
hazards which will result in severe personal injury or death.
WARNING signifies hazards which could result in personal
injury or death. CAUTION is used to identify unsafe
practices which may result in minor personal injury or
product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation,
reliability, or operation.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF
position. There may be more than 1 disconnect switch.
Lock out and tag switch with a suitable warning label.
. When you see this symbol on the unit and in
!
WARNING
Installing, starting up, and servicing air−conditioning
equipment can be hazardous due to system pressures,
electrical components, and equipment location (roofs,
elevated structures, etc.).
Only trained, qualified installers and service mechanics
should install, start−up, and service this equipment.
Untrained personnel can perform basic maintenance
functions such as cleaning coils. All other operations should
be performed by trained service personnel.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant
pipe in the ground. If any section of pipe is buried, there
must be a 6 in. (152 mm) vertical rise to the valve
connections on the outdoor units. If more than the
recommended length is buried, refrigerant may migrate
to the cooler buried section during extended periods of
system shutdown. This causes refrigerant slugging and
could possibly damage the compressor at start−up.
CAUTION
421 01 9204 00 1/03/13
SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H)
PRODUCT SPECIFICATIONS
Model − Indoor UnitDLF4AH09J1ADLF4HH09J1A
FunctionCoolingCoolingHeating
Rated Voltage115V115V
Frequency
(Inverter different
Compressor speed)
Total Capacity
(Inverter different
Compressor speed)
Power Input
(Inverter different
Compressor speed)
Rated Input
Rated Current
Air Volume
HighHz707063
StandardHz414144
LowHz151515
HighW/Btuh3100 / 106003100 / 106003250 / 11100
StandardW/Btuh2650 / 90002650 / 90002820 / 9500
LowW/Btuh1300 / 44351300 / 4435930 / 3200
HighW105010501100
StandardW634634700
LowW180180220
HighW105010501100
StandardW634634700
HighA16.816.817.0
StandardA7.07.07.5
CFM370370
Dehumidifying VolumeI/h0.80.8
EER / C.O.P14.214.2
SEER / HSPF2222 / 9.8
Indoor UnitDLF4AH09J1ADLF4HH09J1A
SHr/min126012601320
Speed
Fan Motor
OutputW2020
CapacitormF4.04.0
RLAA0.380.38
Fan
Evaporator
Swing Motor
FuseA3.153.15
Sound Pressure Level
Sound Pressure Level
Dimension (WxHxD)Inch33 x 11 x 733 x 11 x 7
Dimension of Package (WxHxD)Inch36 x 14 x 1036 x 14 x 10
Net Weight / Gross WeightInch29 / 3829 / 38
TypeCross Flow FanCross Flow Fan
Diameter−LengthInchf3.6x25.4f3.6x25.4
Pipe DiameterInchf0.3f0.3
Row−Fin GapInch2−0.062−0.06
Coil length (I) x height
(H) x coil width (L)
ModelMP24AAMP24AA
OutputW2.42.4
Hr/min105010501200
Mr/min9209201100
Lr/min730730950
Aluminum Fin Copper TubeAluminum Fin Copper Tube
Inch25.4 x 10.5 x 125.4 x 10.5 x 1
HdB (A)3434
MdB (A)3030
LdB (A)2626
HdB (A)4444
MdB (A)4040
LdB (A)3636
2 421 01 9204 00
SERVICE MANUALR−410A Ductless Split System: DLF4(A/H), DLC4(A/H)
Use of the AHRI Certified TM Mark indicates a
manufacturer’s participation in the program. For
verification of certification for individual products,
go to www.ahridirectory.org .
SERIAL NUMBER NOMENCLATURE
Position Number12345678910
Serial Number
Year
Week
Sequential Digits Unique for Each Factory
V102212345
16421 08 9204 00
SERVICE MANUALR−410A Ductless Split System: DLF4(A/H), DLC4(A/H)
STANDARD FEATURES AND ACCESSORIES
Ease of Operation
Mounting BracketsS
Low Voltage ConnectionsS
Comfort Features
Microprocessor ControlsS
Wireless Remote ControlS
Rapid Cooling/HeatingS
Automatic Air SweepS
Cold Blow PreventionS
Continuous FanS
Auto Restart FeatureS
Memory FunctionS
Auto ChangeoverS
Indoor Unit Freeze ProtectionS
3 Minute Compressor Time DelayS
High Compressor Discharge TemperatureS
Low Voltage ProtectionS
Compressor Overload ProtectionS
Compressor Over Current ProtectionS
IPM Module ProtectionS
Ease of Service and Maintenance
Cleanable FiltersS
Diagnostic LED’s ON Outdoor BoardS
Error Messages Displayed Front PanelS
Application Flexibility
Condensate PumpA
Low Ambient Heating and Cooling on most modelsA
Standard Warranty
7 Year Compressor Limited WarrantyS
5 Year Parts Limited WarrantyS
Extended Warranty
6 −10 Year Compressor OnlyO
2 − 6 Year Parts OnlyO
2 − 6 Year Parts Only; 1 − 6 Year LaborO
2 − 6 Year Parts Only; 6 − 10 Year Compressor Only;
1 − 6 Year Labor
Legend
S = Standard
A = Accessory
O = Optional
* Sizes 09, 18, & 24K have a clock.
16’ Transparent
Suction Discharge Tubing
Adhesive
Mounting Bracket
Detection Unit
Mounting Bracket
5/8” Rubber Elbow
Wire Ties (6)
Figure 1 - Accessory Condensate Pump Kit
Table 1 − Accessory Condensate Pump Kit Contents
ItemQty.
16 ft Transparent Suction/Discharge Tubing1
Condensate Pump Assembly1
Low voltage Power Cord1
Transparent Detection Unit Vent Tubing1
Power Cable1
Wire Ties6
Wall Mount Bracket1
Adhesive1
Detection Unit Mounting Bracket1
⅝−in Rubber Elbow1
Detection Unit1
!
ELECTRICAL SHOCK HAZARD
O
Failure to follow this warning could result in personal injury
or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF position.
Ensure power is disconnected to the fan coil unit. On some
systems both the fan coil and the outdoor unit may be on
the same disconnect. There may be more than 1 disconnect
switch. Lock out and tag switch with a suitable warning
label.
WARNING
Condensate Pump
Assembly
Detection Unit
Power Cable
Low Voltage
Power Cord
Transparent
Detection
Unit Vent Tubing
A12227
421 08 9204 0017
SERVICE MANUAL R−410A Ductless Split System: DLF4(A/H), DLC4(A/H)
36K−HP208/230−1−60187/25317.50670.730.268170208/230 V−AC 0.470.114602440
LEGEND
FLA − Full Load Amps
LRA − Locked Rotor Amps
MCA − Minimum Circuit Amps
RLA − Rated Load Amps
MOCP − Maximum Over Current Protection
WIRING
The main power is supplied to the outdoor unit. The field
supplied connecting cable from the outdoor unit to indoor unit
consists of four wires and provides the power for the indoor unit
as well as the communication signal and ground between the
outdoor and indoor unit.
Two wires are high voltage AC power, one is low voltage DC
signal and one is a ground wire.
Consult local building codes, NEC (National Electrical Code) or
CEC (Canadian Electrical Code) for special requirements.
Voltage drop on the connecting cable should be kept to a
minimum. Use cable size and max length below:
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Use copper conductors only with a minimum 300 volt
rating and 2/64 inch thick insulation.
System Voltage
Volts−Ph.−Freq.
18 AWG50 ft. (16m)
16 AWG100 ft. (33m)
!
CAUTION
Voltage
(Min/Max)
CompressorOutdoor FanIndoor Fan
Output
RLALRAFLAHP
WattsVoltsFLAHP
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Be sure to comply with local codes while running wire from
indoor unit to outdoor unit.
Every wire must be connected firmly. Loose wiring may
cause terminal to overheat or result in unit malfunction. A
fire hazard may also exist. Therefore, be sure all wiring is
tightly connected.
No wire should be allowed to touch refrigerant tubing,
compressor or any moving parts.
Disconnecting means must be provided and shall be
located within sight and readily accessible from the air
conditioner.
Connecting cable with conduit shall be routed through
hole in the conduit panel.
CAUTION
Output
Watts
MCA
Fuse/CB
Amps
(MOCP)
Max
421 08 9204 0025
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