Heat Controller DMH24DB-1, DMC24DB-1 User Manual
Wall Mounted
Multi-Split System
Air Conditioning/Heat Pump
DMC24DB-1
DMH24DB-1
Before servicing the unit, read the
“safety precautions” in this manual.
Only for authorized service personnel.
HEAT CONTROLLER, INC.
Multi type Air Conditioner Service Manual
TABLE OF CONTENTS
Combination table.......................................................................................................................................3
Safety Precautions......................................................................................................................................4
Dimensions................................................................................................................................................10
Indoor Unit.............................................................................................................................................10
Outdoor Unit...........................................................................................................................................11
Product Specifications.............................................................................................................................12
DMC24DB-1...........................................................................................................................................12
DMH24DB-1...........................................................................................................................................13
Installation.................................................................................................................................................14
Installation Parts.....................................................................................................................................14
Installation Tools.....................................................................................................................................14
Select the best location .........................................................................................................................15
Piping length and elevation....................................................................................................................16
Fixing Installation Plate(Standard Type).................................................................................................17
Flaring Work and Connection of Piping..................................................................................................18
Flaring work............................................................................................................................................18
Connecting the Piping............................................................................................................................19
Connecting the Cable between Indoor Unit and Outdoor Unit.............................................................25
Connect the cable to the Indoor unit. .....................................................................................................25
Connect the cable to the Outdoor unit....................................................................................................26
Connection method of the connecting cable(Example)..........................................................................27
Connect the cable to the indoor unit.......................................................................................................28
Checking the Drainage, Forming the Pipings and Long Pipe Setting .................................................29
Checking the drainage............................................................................................................................29
Forming the piping..................................................................................................................................30
Air Purging and Evacuation.....................................................................................................................31
Checking method ...................................................................................................................................31
Evacuation..............................................................................................................................................32
Charging ....................................................................................................................................................33
Test Running.............................................................................................................................................34
Operation...................................................................................................................................................35
Function of control..................................................................................................................................35
Function of Indoor Unit...........................................................................................................................40
Function of Outdoor Unit........................................................................................................................41
Remote Control Operation .....................................................................................................................42
Disassembly..............................................................................................................................................43
Indoor Unit..............................................................................................................................................43
Schematic Diagram...................................................................................................................................46
Electronic Control Device.......................................................................................................................46
Wiring Diagram.......................................................................................................................................49
Components Locations...........................................................................................................................50
Troubleshooting Guide.............................................................................................................................54
Refrigeration Cycle Diagram..................................................................................................................54
Self-diagnosis Function..........................................................................................................................55
Cycle Troubleshooting Guide..................................................................................................................56
Electronic Parts Troubleshooting Guide .................................................................................................57
Error Code..............................................................................................................................................62
2-way, 3-way Valve....................................................................................................................................66
2 Multi type Air Conditioner
Service Manual 3
Operation
1 Unit
2 Unit
Combination of Indoor Unit(kBtu/h)
Cooling
Each Capacity
Unit-A Unit-B
UNIT-A(Btu/h) UNIT-B(Btu/h)
Total Btu/h kW
UNIT-A(Btu/h) UNIT-B(Btu/h)
Btu/h kW
Total Capacity Each Capacity Total Capacity
Heating
12
12 12
12
24
12000
12000-12000
12000
24000
12000
24000
3516
7033
3516
7033
12000
12000-12000
Notes :
1.Cooling Capacity is based on : indoor temp. 26.7°C(80.1°F)DB, 19.4°C(66.9°F)WB; outdoor temp. 35°C(95°F)DB, 23.9°C(75°F)WB
2.Heating Capacity is based on : indoor temp. 21.1°C(70°F)DB, 15.6°C(60.1°F)WB; outdoor temp. 8.3°C(46.9°F)DB, 6.1°C(43°F)WB
3.The total ability of connected a indoor unit is up to 24k Btu/h
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the
air conditioner.
This symbol indicates special notes.
NOTICE
Symbols Used in this Manual
Combination table
Combination table
4 Multi type Air Conditioner
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must
be followed.
■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
■ Meanings of symbols used in this manual are as shown below.
WARNING
CAUTION
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
WARNING
■ Installation
Be sure not to do.
Be sure to follow the instruction.
Do not use a defective or underrated circuit breaker. Use this
appliance on a dedicated circuit.
• There is risk of fire or electric
shock.
For electrical work, contact the
dealer, seller, a qualified electrician,
or an Authorized Service Center
.
• Do not disassemble or repair the
product. There is risk of fire or
electric shock.
Always ground the product.
• There is risk of fire or electric
shock.
Install the panel and the cover
of control box securely.
• There is risk of fire or electric
shock.
Always install a dedicated circuit and breaker.
• Improper wiring or installation may
cause fire or electric shock
Use the correctly rated breaker or fuse.
• There is risk of fire or electric
shock.
Service Manual 5
Safety Precautions
Do not install, remove, or reinstall the unit by yourself
(customer).
• There is risk of fire, electric shock,
explosion, or injury.
Be cautious when unpacking
and installing the product.
• Sharp edges could cause injury.
Be especially careful of the case
edges and the fins on the condenser and evaporator.
For installation, always contact the dealer or an
Authorized Service Center.
• There is risk of fire, electric shock,
explosion, or injury.
Do not install the product on a
defective installation stand.
• It may cause injury, accident, or
damage to the product.
Be sure the installation area
does not deteriorate with age.
• If the base collapses, the air conditioner could fall with it, causing
property damage, product failure,
and personal injury.
Do not let the air conditioner
run for a long time when the
humidity is very high and a
door or a window is left open.
• Moisture may condense and wet or
damage furniture.
Do not allow water to run into
electric parts.
• It may cause There is risk of fire,
failure of the product, or electric
shock.
Do not store or use flammable
gas or combustibles near the
product.
• There is risk of fire or failure of
product.
Do not use the product in a
tightly closed space for a long
time.
• Oxygen deficiency could occur.
Gasolin
6 Multi type Air Conditioner
Safety Precautions
Do not open the inlet grill of the product
during operation. (Do not touch the electrostatic filter, if the unit is so equipped.)
• There is risk of physical injury,
electric shock, or product failure.
When the product is soaked
(flooded or submerged), contact
an Authorized Service Center.
• There is risk of fire or electric
shock.
Be cautious that water could
not enter the product.
• There is risk of fire, electric shock,
or product damage.
Ventilate the product from time to time when
operating it together with a stove, etc.
• There is risk of fire or electric shock.
Turn the main power off when cleaning or
maintaining the product.
• There is risk of electric shock.
When flammable gas leaks,
turn off the gas and open a
window for ventilation before
turn the product on.
• Do not use the telephone or turn
switches on or off. There is risk of
explosion or fire
If strange sounds, or smoke
comes from product. Turn the
breaker off.
• There is risk of electric shock or
fire.
Stop operation and close the
window in storm or hurricane.
If possible, remove the product from the window before
the hurricane arrives.
• There is risk of property damage,
failure of product, or electric shock.
Service Manual 7
Safety Precautions
When the product is not to be used for a long time,
disconnect the power by turning off the breaker.
• There is risk of product damage or failure, or unintended operation.
Take care to ensure that nobody could step on
or fall onto the outdoor unit.
• This could result in personal injury and product damage.
Always check for gas (refrigerant) leakage after installation or repair of product.
• Low refrigerant levels may cause
failure of product.
Install the drain hose to ensure that
water is drained away properly.
• A bad connection may cause water
leakage.
Keep level even when
installing the product.
• To avoid vibration or water leakage.
Do not install the product
where the noise or hot air
from the outdoor unit could
oftend neighbors.
• It may cause a problem for your
neighbors.
Use two or more people to lift
and transport the product.
• Avoid personal injury.
Do not install the product
where it will be exposed to
sea wind (salt spray) directly.
• It may cause corrosion on the
product. Corrosion, particularly on
the condenser and evaporator fins,
could cause product malfunction or
inefficient operation.
CAUTION
■ Installation
90°
8 Multi type Air Conditioner
Safety Precautions
Do not expose the skin directly to cool air for long periods
of time.
(Don't sit in the draft.)
• This could harm to your health.
Do not use the product for
special purposes, such as
preserving foods, works of
art, etc. It is a consumer air
conditioner, not a precision
refrigeration system.
• There is risk of damage or loss of
property.
Do not block the inlet or outlet
of air flow.
• It may cause product failure.
Use a soft cloth to clean. Do
not use harsh detergents, solvents, etc.
• There is risk of fire, electric shock,
or damage to the plastic parts of
the product.
Do not touch the metal parts of
the product when removing the
air filter. They are very sharp!
• There is risk of personal injury.
Do not step on or put anyting
on the product. (outdoor
units)
• There is risk of personal injury and
failure of product.
Always insert the filter securely. Clean the filter every two
weeks or more often if necessary.
•
A dirty filter reduces the efficiency of
the air conditioner and could cause
product malfunction or damage.
Do not insert hands or other
objects through the air inlet or
outlet while the product is
operated.
• There are sharp and moving parts
that could cause personal injury.
Do not drink the water drained
from the product.
• It is not sanitary and could cause
serious health issues.
■ Operational
Thinner
Wax
Service Manual 9
Safety Precautions
Do not recharge or disassemble the batteries.
Do not dispose of batteries in a fire.
• They may burn or explode.
If the liquid from the batteries gets onto your
skin or clothes, wash it well with clean water.
Do not use the remote if the batteries have
leaked.
• The chemicals in batteries could cause burns or other
health hazards.
Use a firm stool or ladder when cleaning or
maintaining the product.
• Be careful and avoid personal injury.
Replace the all batteries in the remote control
with new ones of the same type. Do not mix
old and new batteries or different types of batteries.
• There is risk of fire or explosion
10 Multi type Air Conditioner
Dimensions
Dimensions
Indoor Unit
Split Type Indoor
Installation plate
D
H
W
W mm(in) 895(35.2)
H mm(in) 282(11.1)
D mm(in) 165(6.5)
Model
Dimension
Split Type(SE)
12 kBtu/h
Service Manual 11
Outdoor Unit
W
D
L1
L2
L4
L3
H
L7L5L6
W mm(in) 870(34.3)
H mm(in) 800(31.5)
D mm(in) 320(12.6)
L1 mm(in) 370(14.6)
L2 mm(in) 25(1.0)
L3 mm(in) 775(30.5)
L4 mm(in) 25(1.0)
L5 mm(in) 546(21.5)
L6 mm(in) 160(6.3)
L7 mm(in) 160(6.3)
UE1
24kBtu/h
MODEL
DIM
Dimensions
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