Heat Controller A-MMC18FA-1, A-MMH24FA-1, A-MMH36FA-1, B-MMC12FA-1, A-MMC36FA-1 User Manual
...
HEAT CONTROLLER, INC.
Wall Mounted
Multi-Zone Split System
Air Conditioning/Heat Pump
Indoor Unit: B-MMC09FA-1
B-MMH09FA-1
B-MMC12FA-1
B-MMH12FA-1
Outdoor Unit : A-MMC18FA-1
A-MMH18FA-1
A-MMC24FA-1
A-MMH24FA-1
A-MMC36FA-1
A-MMH36FA-1
Before servicing the unit, read the
“safety precautions” in this manual.
Only for authorized service personnel.
Wall Mounted Multi-Zone Split System Air Conditioner Service Manual
TABLE OF CONTENTS
Combination table.......................................................................................................................................3
Safety Precautions......................................................................................................................................4
Seaside applications and installation .....................................................................................................10
Dimensions................................................................................................................................................11
Indoor Unit..............................................................................................................................................11
Outdoor Unit...........................................................................................................................................12
Product Specifications .............................................................................................................................15
Indoor Unit..............................................................................................................................................15
Outdoor Unit...........................................................................................................................................16
Installation .................................................................................................................................................19
Installation Parts.....................................................................................................................................19
Installation Tools.....................................................................................................................................19
Selecting the best location ....................................................................................................................20
Piping length and elevation ....................................................................................................................21
Installing installation Plate(Standard Type) ............................................................................................22
Drilling the hole in the wall ....................................................................................................................22
Flaring Work and Connection of Piping..................................................................................................23
Flaring work............................................................................................................................................23
Connecting the Piping ............................................................................................................................24
Connecting the Cable between Indoor Unit and Outdoor Unit .............................................................31
Connect the cable to the Indoor unit. .....................................................................................................31
Connect the cable to the Outdoor unit....................................................................................................32
Methods of connecting the cable............................................................................................................33
Checking the Drainage, Insulating the pipe and special piping applications.....................................35
Checking the drainage............................................................................................................................35
Insulating the pipe and special piping applications ................................................................................36
Air Purging and Evacuation.....................................................................................................................37
Leak checking ........................................................................................................................................37
Evacuation..............................................................................................................................................38
Charging ....................................................................................................................................................39
Test Running .............................................................................................................................................40
Operation ...................................................................................................................................................41
Function of control..................................................................................................................................41
Function of Indoor Unit...........................................................................................................................46
Function of Outdoor Unit ........................................................................................................................47
Remote Control Operation .....................................................................................................................48
Disassembly ..............................................................................................................................................49
Indoor Unit..............................................................................................................................................49
Schematic Diagram...................................................................................................................................52
Electronic Control Device .......................................................................................................................52
Wiring Diagram.......................................................................................................................................55
Component Locations ............................................................................................................................57
Troubleshooting Guide .............................................................................................................................61
Refrigeration Cycle Diagram ..................................................................................................................61
Self-diagnosis Function..........................................................................................................................64
Cycle Troubleshooting Guide..................................................................................................................65
Electronic Parts Troubleshooting Guide .................................................................................................66
Error Code..............................................................................................................................................72
2-way, 3-way Valve ....................................................................................................................................76
Exploded View...........................................................................................................................................80
Indoor Unit .............................................................................................................................................80
Outdoor Unit...........................................................................................................................................81
Wall Mounted Multi-Zone Split System Air Conditioner
- 2 -
NOTICE
Combination table
18 kBtu/h( 2 rooms)
Combination
Indoor Unit A(kBtu/h) Indoor Unit B(kBtu/h) Total(kBtu/h)
2 Indoor Units 9 9 18
24 kBtu/h( 2 rooms)
Combination
Indoor Unit A(kBtu/h) Indoor Unit B(kBtu/h) Total(kBtu/h)
2 Indoor Units 12 12 24
Combination table
36 kBtu/h (3 rooms)
Combination
Indoor Unit A(kBtu/h) Indoor Unit B(kBtu/h) Indoor Unit C(kBtu/h) Total(kBtu/h)
3 Indoor Units 12 12 12 36
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
Symbols Used in this Manual
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.
- 3 -
Service Manual
Safety Precautions
WARNING
CAUTION
WARNING
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.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
■ Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
■ Installation
Do not use a defective or underrated circuit breaker. Use this
appliance on a dedicated circuit.
• 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.
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 install a dedicated circuit and breaker.
• Improper wiring or installation may
cause fire or electric shock
• There is risk of fire or electric
Always ground the product.
• There is risk of fire or electric
shock.
Use the correctly rated breaker or fuse.
shock.
Wall Mounted Multi-Zone Split System Air Conditioner
- 4 -
Safety Precautions
Do not install, remove, or reinstall the unit by yourself
(customer).
• 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 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.
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.
For installation, always contact the dealer or an
Authorized Service Center.
• There is risk of fire, electric shock,
explosion, or 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.
Gasolin
- 5 -
Do not use the product in a
tightly closed space for a long
time.
• Oxygen deficiency could occur.
Service Manual
Safety Precautions
When flammable gas leaks,
turn off the gas and open a
window for ventilation before
If strange sounds or smoke
come from the product, turn
the breaker off.
turn the product on.
• Do not use the telephone or turn
switches on or off. There is risk of
explosion or fire
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.
• There is risk of electric shock or
fire.
When the product is soaked
(flooded or submerged), contact
an Authorized Service Center.
• There is risk of fire or electric
shock.
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.
Be cautious that water can
never 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.
Wall Mounted Multi-Zone Split System Air Conditioner
Turn the main power off when cleaning or
maintaining the product.
• There is risk of electric shock.
- 6 -
Safety Precautions
CAUTION
When the product is not being used for a long time,
disconnect the power by turning off the breaker.
• There is risk of product damage or failure, or unintended operation.
■ Installation
Always check for gas (refrigerant) leakage after installation or repair of product.
Install the drain hose to ensure that
water is drained away properly.
Take care to ensure that nobody could step on
or fall onto the outdoor unit.
• This could result in personal injury and product damage.
Keep level even when
installing the product.
• Low refrigerant levels may cause
failure of product.
Do not install the product
where the noise or hot air
from the outdoor unit could
offend neighbors.
• It may cause a problem for your
neighbors.
• A bad connection may cause water
leakage.
Use two or more people to lift
and transport the product.
• Avoid personal injury.
• To avoid vibration or water leakage.
90°
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.
- 7 -
Service Manual
Safety Precautions
■ Operational
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.
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 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 touch the metal parts of
the product when removing the
air filter. They are very sharp!
• There is risk of personal injury.
Do not block the inlet or outlet
of air flow.
• It may cause product failure.
Do not step on or put anyting
on the product. (outdoor
units)
• There is risk of personal injury and
failure of product.
Thinner
Wax
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.
Wall Mounted Multi-Zone Split System Air Conditioner
Do not insert hands or other
objects through the air inlet or
outlet while the product is
operating.
• 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.
- 8 -
Safety Precautions
Use a firm stool or ladder when cleaning or
maintaining the product.
• Be careful and avoid personal injury.
Do not recharge or disassemble the batteries.
Do not dispose of batteries in a fire.
• They may burn or explode.
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
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.
If you ingest the liquid from the batteries, call your
local poison control center or a doctor.
Do not use the remote is the batteries have leaked.
• The chemicals in batteries could cause burns or other
health hazards.
- 9 -
Service Manual
Seaside applications and installation
Seaside applications and installation
1.
Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.
2. Do not install the product where it could be exposed to sea wind (salty wind) directly. It can result corrosion
on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient performance.
3.
If outdoor unit is installed close to the seaside, it should avoid direct exposure to the sea wind.
Selecting the location(Outdoor Unit)
1) If the outdoor unit is to be installed close to the seaside, direct exposure to the sea wind should be avoided.
Install the outdoor unit on the opposite side of the sea wind direction.
Sea wind Sea wind
2) To
install the outdoor unit on the seaside, set up a windbreaker/barrier to keep the unit from being exposed to
the sea wind.
Windbreaker/Barrier
Sea wind
3) Select a well-drained place.
• It should be strong enough (like concrete) to
obstruct the wind from the sea.
• The height and width should be more than 150% of
the outdoor unit.
A minimum of 70cm (27.6inches) of space between
•
outdoor unit and the windbreaker/barrier for easy
air flow.
1. Periodic ( more than once/year ) cleaning of dust or salt particles stuck on the heat exchanger using water is recommended.
Wall Mounted Multi-Zone Split System Air Conditioner
- 10 -
Dimensions
Installation plate
D
H
W
Indoor Unit
Split Type Indoor
Dimensions
Model
Dimension
W mm(in) 840(33) 895(35.2)
H mm(in) 270(10.6) 282(11.1)
D mm(in) 153(6) 165(6.5)
Split Type
9 kBtu/h 12 kBtu/h
- 11 -
Service Manual
W
D
L1
L2
L4
L3
H
L7L5L6
Dimensions
Outdoor Unit
MODEL
DIM
W mm(in) 870(34.3)
H mm(in) 655(25.8)
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)
UE
18kBtu/h
Wall Mounted Multi-Zone Split System Air Conditioner
- 12 -
W
D
L1
L2
L4
L3
H
L7L5L6
Dimensions
MODEL
DIM
W mm(in) 870(34.3)
H mm(in) 808(31.8)
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)
UE 1
24kBtu/h
- 13 -
Service Manual
Dimensions
L6L7 L8
L9
L4
H
L5
W
D
L1
L3
L2
L10 L11 L11 L11L11L11
Gas side
3-way valve
Liquid side
2-way valve
MODEL
DIM
W mm(in) 870(34.3)
H mm(in) 1038(40.7)
D mm(in) 320(12.6)
L1 mm(in) 360(14.2)
L2 mm(in) 340(13.4)
L3 mm(in) 25(1.0)
L4 mm(in) 1035(40.8)
L5 mm(in) 25(1.0)
L6 mm(in) 546(21.5)
L7 mm(in) 160(6.3)
L8 mm(in) 160(6.3)
L9 mm(in) 44(11.7)
L10 mm(in) 64.5(2.5)
L11 mm(in) 50(2.0)
UE2
36kBtu/h
Wall Mounted Multi-Zone Split System Air Conditioner
- 14 -
Product Specifications
Indoor Unit
Product Specifications
Indoor Unit Type
Model
Nominal Cooling Capacity kcal/h(W)
Btu/h
Nominal Heating Capacity kcal/h(W)
Btu/h
Air Circulation CFM(CMM)
Setting temperature range(cool/heat) °C
Fan motor Output W
Model
Input V
Running Current A
Fan Type
No. Used / Diameter EA/inch(mm)
Noise Level (Sound Press,1m)
Temperature controller
Coil Tube Size (OD) inch(mm)
Dehumidification Rate pints/day
Dimensions (W*H*D) inch(mm)
Net Weight lbs(kg)
Piping Connection Liquid inch(mm)
Packing Dimension (W*H*D) inch(mm)
Stuffing Quantity With(Without) S/Parts 20/40ft(hi-c)
H/M/L dBA
Fins per inch
No. of Rows & Column
Gas inch(mm)
Drain hose (ID Ø) inch(mm)
Wall Mounted
B-MMC09FA-1 B-MMH09FA-1 B-MMC12FA-1 B-MMH12FA-1
2,267(2,637) 2,267(2,637) 3,023(3,516) 3,023(3,516)
9,000 9,000 12,000 12,000
- 2,267(2,637) - 3,023(3,516)
- 9,000 - 12,000
289(8.2) 289(8.2) 332(9.4) 332(9.4)
18~30 18~30 18~30 18~30
15 15 15 15
DL-88430LGIF DL-88430LGIF DL-88430LGIF DL-88430LGIF
DC36 DC36 DC36 DC36
0.15 0.15 0.15 0.15
Cross Flow Fan Cross Flow Fan Cross Flow Fan Cross Flow Fan
1/3.74(95) 1/3.74(95) 1/3.74(95) 1/3.74(95)
31 / 29 / 22 31 / 29 / 22 36 / 32 / 29 36 / 32 / 29
Thermistor Thermistor Thermistor Thermistor
0.197(5.0) 0.197(5.0) 0.197(5.0) 0.197(5.0)
20 20 18 18
2R,15C 2R,15C 2R,15C 2R,15C
- 12.4 - 13.5
33.0*10.6*6.0(840*270*153) 33.0*10.6*6.0(840*270*153) 35.2*11.1*6.5(895*282*165) 35.2*11.1*6.5(895*282*165)
15.4(7) 15.4(7) 20.9(9.5) 20.9(9.5)
1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35)
3/8 (9.52) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52)
0.79(20) 0.79(20) 0.79(20) 0.79(20)
35.7*13.1*8.8(906*332*223) 35.7*13.1*8.8(906*332*223) 38.3*9.1*14.6(973*231*372) 38.3*9.1*14.6(973*231*372)
440/910 (1091) 440/910 (1091) 353/719 (792) 353/719 (792)
Note : 1. Due to our policy of innovation some specifications may be changed without notification.
- 15 -
Service Manual
Product Specifications
Outdoor Unit - Multiple piping models
Model
Cooling Capacity Btu/hr
Heating Capacity Btu/hr
Input Cooling W
Running Current(208/230V)
Power Supply Ø,V,Hz
Max. Number of Connectable Indoor Units
Compressor Type
(Constant) Model
Compressor Type
(Constant) Model
Refrigerant charge Charge oz(g)
Coil Tube Size (OD) inch(mm)
Fan motor Model
Fan Type
Air Circulation Outdoor CMM(CFM)
Noise Level(H/L) at 230V
Defrosting
SVC Valve Liquid inch(mm)
Dimensions W*H*D inch(mm)
Net Weight Outdoor lbs(kg)
Max. Interunit Piping Length
Max. Installation Indoor Unit~Outdoor Unit ft(m)
Height Difference Indoor Unit~Indoor Unit ft(m)
Packing Dimension W*H*D inch(mm)
Stuffing Quantity 20/40ft
SEER
HSPF
Heating W
Cooling A
Heating A
Motor Type
Quantity Ea
Motor Input W
Oil Charge cc
Oil Type
Capacitor µF/Vac
O.L.P Type(model name)
Motor Type
Quantity Ea
Motor Input W
Oil Charge cc
Oil Type
Capacitor µF/Vac
O.L.P Type(model name)
Type
Control
Fins per inch
No. of Rows & Column/No.
Output W
Capacitor µF/Vac
No. Used / Diameter CFM(CMM)
Discharge Side / Top
Sound Press,1m dB(A)
Gas
Total of Each Room ft(m)
For One Room ft(m)
W
kcal/hr
W
kcal/hr
1
A-MMC18FA-1 A-MMH18FA-1
External Type(MRA98996-12026)
External Type(MRA12124-12026)
1/4 (6.35) * 2EA
3/8 (9.52) * 2EA
34.3*25.8*12.6 (870*655*320)
40.2*28.2*17.2 (1020*716*437)
Note:
1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 26.7˚C(80˚F) DB/19.4˚C(67˚F) WB
- Outdoor Temperature 35˚C(95˚F) DB/23.9˚C(75˚F) WB
Heating: - Indoor Temperature 21.1˚C(70˚F) DB/15.6˚C(60˚F) WB
- Outdoor Temperature 8.3˚C(47˚F) DB/6.1˚C(43˚F) WB
Piping Length - Interconnecting Piping Length 24.6 ft(7.5m)
- Level Difference of Zero
18,000
5,275
4,536
-
-
-
1,978
-
8.8
-
1,208/230,60
2
Rotary
GK094K
Hermetic
1
955
330±10
FVC68D
30 / 370
External Type(MRA98996-12026)
Rotary
GK113K
Hermetic
1
1,120
330±10
FVC68D
35 / 370
External Type(MRA12124-12026)
49.4(1400)
R410A
EEV
0.276(7.0)
18
2R,28C
IC-1640LG GE
90
6/370
Propeller
1765.7(50)
Side
50(1765.7)
51
-
34.3*25.8*12.6 (870*655*320)
125.7(57)
98.4(30)
49.2(15)
24.6(7.5)
24.6(7.5)
40.2*28.2*17.2 (1020*716*437)
81/171
13.0
-
18,000
5,275
4,536
18,000
5,275
4,536
1,978
1,960
8.8
8.6
1,208/230,60
2
Rotary
GK094K
Hermetic
1
955
330±10
FVC68D
30 / 370
Rotary
GK113K
Hermetic
1
1,120
330±10
FVC68D
35 / 370
49.4(1400)
R410A
EEV
0.276(7.0)
18
2R,28C
IC-1640LG GE
90
6/370
Propeller
1765.7(50)
Side
50(1765.7)
51
Invertion Cycle
1/4 (6.35) * 2EA
3/8 (9.52) * 2EA
125.7(57)
98.4(30)
49.2(15)
24.6(7.5)
24.6(7.5)
81/171
13.0
7.7
2. Wiring cable size must comply with the applicable local and national code.
3. Capacities are Net Capacities.
4. The specification may be subject to change without prior notice for purpose
of improvement.
Wall Mounted Multi-Zone Split System Air Conditioner
- 16 -
Product Specifications
Model
Cooling Capacity Btu/hr
Heating Capacity Btu/hr
Input Cooling W
Running Current(208/230V)
Power Supply Ø,V,Hz
Max. Number of Connectable Indoor Units
Compressor Type
(Constant) Model
Compressor Type
(Constant) Model
Refrigerant charge Charge oz(g)
Coil Tube Size (OD) inch(mm)
Fan motor Model
Fan Type
Air Circulation Outdoor CMM(CFM)
Noise Level(H/L) at 230V
Defrosting
SVC Valve Liquid inch(mm)
Dimensions W*H*D inch(mm)
Net Weight Outdoor lbs(kg)
Max. Interunit Piping Length
Max. Installation Indoor Unit~Outdoor Unit ft(m)
Height Difference Indoor Unit~Indoor Unit ft(m)
Packing Dimension W*H*D inch(mm)
Stuffing Quantity 20/40ft
SEER
HSPF
Heating W
Cooling A
Heating A
Motor Type
Quantity Ea
Motor Input W
Oil Charge cc
Oil Type
Capacitor µF/Vac
O.L.P Type(model name)
Motor Type
Quantity Ea
Motor Input W
Oil Charge cc
Oil Type
Capacitor µF/Vac
O.L.P Type(model name)
Type
Control
Fins per inch
No. of Rows & Column/No.
Output W
Capacitor µF/Vac
No. Used / Diameter CFM(CMM)
Discharge Side / Top
Sound Press,1m dB(A)
Gas
Total of Each Room ft(m)
For One Room ft(m)
W
kcal/hr
W
kcal/hr
1
A-MMC24FA-1 A-MMH24FA-1
External Type(MRA98996-12026) External Type(MRA98996-12026)
External Type(MRA12105-12026) External Type(MRA12105-12026)
34.3*31.8*12.6 (870*808*320) 34.3*31.8*12.6 (870*808*320)
40.2*34.3*17.2 (1022*870*437) 40.2*34.3*17.2 (1022*870*437)
Note:
1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 26.7˚C(80˚F) DB/19.4˚C(67˚F) WB
- Outdoor Temperature 35˚C(95˚F) DB/23.9˚C(75˚F) WB
Heating: - Indoor Temperature 21.1˚C(70˚F) DB/15.6˚C(60˚F) WB
- Outdoor Temperature 8.3˚C(47˚F) DB/6.1˚C(43˚F) WB
Piping Length - Interconnecting Piping Length 24.6 ft(7.5m)
- Level Difference of Zero
24,000 24,000
7,033 7,033
6,037 6,037
- 24,000
- 7,033
- 6,037
2,526 2,526
- 2440
11.4 11.4
- 11.1
1,208/230,60 1,208/230,60
22
Rotary Rotary
GK094K GK094K
Hermetic Hermetic
11
955 955
330±10 330±10
FVC68D FVC68D
30 / 370 30 / 370
Rotary Rotary
GK141K GK141K
Hermetic Hermetic
11
1430 1,430
350±10 350±10
FVE FVE
35 / 370 35 / 370
56.4(1,600) 56.4(1,600)
R410A R410A
EEV EEV
0.276(7.0) 0.276(7.0)
18 18
2R,36C 2R,36C
IC-1640LG GE IC-1640LG GE
90 90
6/370 6/370
Propeller Propeller
1 / 460 1 / 460
Side Side
1872(53) 1872(53)
54 54
- Invertion Cycle
1/4 (6.35) * 2EA 1/4 (6.35) * 2EA
3/8 (9.52) * 2EA 3/8 (9.52) * 2EA
141.1(64) 141.1(64)
98.4(30) 98.4(30)
49.2(15) 49.2(15)
24.6(7.5) 24.6(7.5)
24.6(7.5) 24.6(7.5)
54/114 54/114
13.0 13.0
- 7.7
2. Wiring cable size must comply with the applicable local and national code.
3. Capacities are Net Capacities.
4. The specification may be subject to change without prior notice for purpose
of improvement.
- 17 -
Service Manual
Product Specifications
Model
Cooling Capacity Btu/hr
Heating Capacity Btu/hr
Input Cooling W
Running Current(208/230V)
Power Supply Ø,V,Hz
Max. Number of Connectable Indoor Units
Compressor Type
(Constant) Model
Compressor Type
(Constant) Model
Refrigerant charge Charge oz(g)
Coil Tube Size (OD) inch(mm)
Fan motor Model
Fan Type
Air Circulation Outdoor CFM(CMM)
Noise Level(H/L) at 230V
SVC Valve Liquid inch(mm)
Dimensions W*H*D inch(mm)
Net Weight Outdoor lbs(kg)
Max. Interunit Piping Length
Max. Installation Indoor Unit~Outdoor Unit ft(m)
Height Difference Indoor Unit~Indoor Unit ft(m)
Packing Dimension W*H*D inch(mm)
Stuffing Quantity 20/40ft
SEER
HSPF
Heating W
Cooling A
Heating A
Motor Type
Quantity Ea
Motor Input W
Oil Charge cc
Oil Type
Capacitor µF/Vac
O.L.P Type(model name)
Motor Type
Quantity Ea
Motor Input W
Oil Charge cc
Oil Type
Capacitor µF/Vac
O.L.P Type(model name)
Type
Control
Fins per inch
No. of Rows & Column/No.
Output W
Capacitor µF/Vac
No. Used / Diameter EA/inch(mm)
Discharge Side / Top
Sound Press,1m dB(A) 1
Gas
Total of Each Room ft(m)
For One Room ft(m)
W
kcal/hr
W
kcal/hr
A-MMC36FA-1 A-MMH36FA-1
2 Pole Induction(PSC) 2 Pole Induction(PSC)
2 Pole Induction(PSC) 2 Pole Induction(PSC)
34.3*40.7*12.6 (870*1038*320) 34.3*40.7*12.6 (870*1038*320)
41.3*44.9*17.3 (1048*1140*439) 41.3*44.9*17.3 (1048*1140*439)
Note:
1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 26.7˚C(80˚F) DB/19.4˚C(67˚F) WB
- Outdoor Temperature 35˚C(95˚F) DB/23.9˚C(75˚F) WB
Heating: - Indoor Temperature 21.1˚C(70˚F) DB/15.6˚C(60˚F) WB
- Outdoor Temperature 8.3˚C(47˚F) DB/6.1˚C(43˚F) WB
Piping Length - Interconnecting Piping Length 24.6 ft(7.5m)
- Level Difference of Zero
36,000 36,000
10,550 10,500
9,071 9,071
- 36,000
- 10,500
- 9,071
4,045 4,045
- 3340
18.2 18.2
- 17.9
1,208/230,60 1,208/230,60
33
Rotary Rotary
GK141K GK141K
11
1430 1430
350Å}10 350Å}10
FVC68D FVC68D
35 / 370 35 / 370
External Type External Type
Rotary Rotary
GJ230K GJ230K
11
2370 2370
700±10 7000±10
FVC68D FVC68D
50 / 400 50 / 400
Internal Type Internal Type
84.7(2400) 84.7(2400)
R410A R410A
EEV EEV
0.276(7.0) 0.276(7.0)
18 18
2R,48C 2R,48C
ARC286B01 * 2 ARC286B01 * 2
102 102
2/370 2/370
Propeller Propeller
2 / 15.7(400) 2 / 15.7(400)
Side Side
2225(63) 2225(63)
51 51
1/4 (6..35) * 3EA 1/4 (6..35) * 3EA
3/8 (9.52) * 3EA 3/8 (9.52) * 3EA
185.2(84) 185.2(84)
147.6(45) 147.6(45)
49.2(15) 49.2(15)
24.6(7.5) 24.6(7.5)
24.6(7.5) 24.6(7.5)
53/111 53/111
13.0 13.0
- 7.7
2. Wiring cable size must comply with the applicable local and national code.
3. Capacities are Net Capacities.
4. The specification may be subject to change without prior notice for purpose
of improvement.
Wall Mounted Multi-Zone Split System Air Conditioner
- 18 -
Installation
Type "A" screw and plastic anchor
Type "B" screw
Remote Control Holder
Installation plate
Figure FigureName
Screw driver
Electric Drill
Measuring Tape, Knife
Hole Core Drill
Adjustable Wrench
Torque wrench
Ohmmeter
Hexagonal wrench
Ammeter
Gas Leak Detector
Thermometer,
Level
Flaring Tool Set
Name
Read carefully and then follow step-by-step.
Installation Parts
Installation
Installation Tools
- 19 -
Service Manual
Installation
More than 20 cm
(7.9 inch)
More than 10 cm
(3.9 inch)
More than 10 cm
(3.9 inch)
More than 2.4m
(8 ft)
Selecting the best location
Indoor unit
1. Do not have any heat or steam near the unit.
2. Select a place where there are no obstacles in front
of the unit.
3. Make sure that condensation drainage can be conveniently routed away.
4. Do not install near a doorway.
Ensure the unit is unobstructed, allow proper space on all sides
5.
according to the arrows and distance measurements in the figures.
6. Use a metal detector or stud finder to locate studs to
prevent unnecessary damage to the wall.
CAUTION: Install the indoor unit
on the wall where the height from
the floors more than 2.4 m (8 ft).
Outdoor unit
1. If an awning is built over the unit to prevent direct
sunlight or rain exposure, make sure that heat radiation from the condenser is not restricted.
Ensure the unit is unobstructed, allow proper space on all sides
2.
according to the arrows and distance measurements in the figures.
3. Do not place animals and plants in the path of the
warm air.
4. Take the air conditioner weight into account and
select a place where noise and vibration are minimum.
Select a place so that the warm air and sound from
5.
the air conditioner does not disturb neighbors.
Rooftop Installations:
If the outdoor unit is installed on a roof structure, be
sure to level the unit. Ensure the roof structure and
anchoring method are adequate for the unit location.
Consult local codes regarding rooftop mounting.
18 / 24 kBtu/h
more than 30 cm
(11.8 inch)
more than 70 cm
(27.6 inch)
36 kBtu/h
more than 30 cm
(11.8 inch)
more than 30 cm
(11.8 inch)
more than 60 cm
(23.6 inch)
more than 30 cm
(11.8 inch)
Wall Mounted Multi-Zone Split System Air Conditioner
more than 70 cm
(27.6 inch)
more than 60 cm
(23.6 inch)
- 20 -
Piping length and elevation
h2
h2
h1
A
B
B
C
h2
h1
A
B
h1
h1
h1
Multi Piping Type
Installation
Capacity
Max total length
of all pipes
(A+B/A+B+C)
Max length of
each pipe
(A/B/C)
Min length of
each pipe
(A/B/C)
Max Elevation
between each
indoor unit and
outdoor unit (h1)
Max elevation
between indoor
units (h2)
18 kBtu 30 m (100 ft) 15 m (50 ft) 3 m (10 ft) 7.5 m (25 ft) 7.5 m (25 ft)
24 kBtu 30 m (100 ft) 15 m (50 ft) 3 m (10 ft) 7.5 m (25 ft) 7.5 m (25 ft)
36 kBtu 45 m (150 ft) 15 m (50 ft) 3 m (10 ft) 7.5 m (25 ft) 7.5 m (25 ft)
Pipe Size
Indoor Capacity
Gas Liquid Standard Length
Additional
Refrigerant
9 kBtu 9.52 mm (3/8") 6.35 mm (1/4") 7.5 m (25 ft) 20 g/m (0.22 oz/ft)
12 kBtu 9.52 mm (3/8") 6.35 mm (1/4") 7.5 m (25 ft) 20 g/m (0.22 oz/ft)
18 / 24 kBtu/h
36 kBtu/h
CAUTION: Capacity is based on standard length and maximum allowance length is on the
basis of reliability.
- 21 -
Service Manual
Installation
Installation Plate
Type "A" screw
Chassis
Hook
5-7 mm
(0.2"~0.3")
Indoor
WALL
Outdoor
Installing Installation Plate(Standard Type)
The wall you select should be strong and solid enough to
prevent vibration
1. Mount the installation plate on the wall with
type "A" screws. If mounting the unit on a concrete wall,
use anchor bolts.
• Mount the installation plate horizontally by aligning the
centerline using a level.
2. Measure the wall and mark the centerline. It is also
important to use caution regarding the location of the
installation plate, as routing the wiring through the wall is
typically done in this application. Drilling the hole through
the wall for piping connections must be done safely.
CHASSIS
9 kBtu/h 50(1.97) 105(4.13) 59(2.32) 105(4.13)
12 kBtu/h 65(2.56) 110(4.33) 85(3.35) 110(4.33)
ABCD
Distance (mm)
D
C
Ø70mm
Left rear piping Right rear piping
Installation plate
B
A
Ø70mm
Drilling the hole in the wall
• Drill the piping hole with a Ø 70 mm (Ø 2.75 inch) hole core drill. Drill the piping hole at either the right or the left
with the hole slightly slanted to the outdoor side.
Wall Mounted Multi-Zone Split System Air Conditioner
- 22 -
Flaring Work and Connection of Piping
Copper
pipe
90°
Slanted Uneven Rough
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Flaring Work and Connection of Piping
Flaring work
The main cause for gas leakage is due to defects in flaring work. Carry out correct flaring work using the following procedures.
Cut the pipes
1. Use the copper pipe purchased locally.
2. Measure the distance between the indoor and the outdoor unit.
3. Cut the pipes a little longer than measured distance.
4. Cut the cable 1.5m (5.0ft) longer than the pipe length.
Burrs removal
1. Completely remove all burrs from the cut cross section of
pipe/tube.
2. Put the end of the copper tube/pipe in a downward direction
as you remove burrs in order to avoid dropping burrs into the
tubing.
Pipe
Reamer
Adding the Flare Nut
• Remove flare nuts attached to the indoor and outdoor unit,
then put them on the end of the copper pipe once you hav
completed burr removal (it is not possible to put them on after
the flaring work)
Flaring work
• Carry out flaring work using flaring tool as shown below.
• Firmly hold copper pipe in the proper size hole dimension of
the bar as shown in the table below.
Outside diameter A
mm inch mm
Ø6.35 1/4 0~0.5
Ø9.52 3/8 0~0.5
Point down
Flare nut
Copper tube
- 23 -
Service Manual
Flaring Work and Connection of Piping
Inclined
Inside is shiny without scratches
Smooth all around
Even length
all around
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Check
1. Compare the flare work like the figure on the right.
2. If a flared section is defective, cut it off and repeat the flaring process again.
Connecting the Piping
Indoor
1. Prepare the indoor unit's piping and drain hose for installation through the wall.
2.
Remove the plastic tubing retainer(see illustration on the
right) and pull the tubing and drain hose away from chassis.
For right rear piping
1. Route the indoor tubing and the drain hose in the direction
of rear right.
2.
Insert the connecting cable into the indoor unit from the outdoor unit through the piping hole.
• Do not connect the cable to the indoor unit.
•
Make a small loop with the cable for easy connection later.
3. Tape the tubing, drain hose, and the connecting cable. Be
sure that the drain hose is located on the lowest side of the
bundle. Locating on the Upper side can cause the condensation to overflow in the drain pan inside the indoor unit.
If the drain hose is routed inside the room, insulate the hose
with an insulation material* so that dripping from "sweating"(condensation) will not damage furniture or floors.
*Foamed polyethylene or equivalent is recommended.
Drain hose
Tape
Connecting
pipe
Drain hose
Connecting cable
Wall Mounted Multi-Zone Split System Air Conditioner
- 24 -
4. Indoor unit installation
Drain hose
Connecting
cable
Hook the indoor unit onto the upper portion of the installation plate.(Engage the two hooks of the rear top of the
indoor unit with the upper edge of the installation plate.)
Ensure that the hooks are properly seated on the installation plate by moving the indoor unit left and right.
Press the lower left and right sides of the unit against the
installation plate until the hooks engage into their
slots(clicking sound).
Connecting the piping to the indoor unit and drain hose
to drain pipe.
1. Align the center of the pipes and sufficiently tighten the
flare nut by hand.
2. Tighten the flare nut with a torque.
Flaring Work and Connection of Piping
Indoor unit tubing Flare nut Pipes
Outside diameter Torque
mm inch kg.m lbf.in
Ø6.35 1/4 1.8 156.2
Ø9.52 3/8 4.2 364.5
3. Next, extend the indoor unit's drain hose.
Then attach the drain pipe.
Wrap the insulation material around the all connections.
1. Overlap the connection pipe insulation material and the
indoor unit pipe insulation material. Bind them together
with vinyl tape so that there is no gap.
2. Wrap the area which accommodates the rear piping housing section with vinyl tape.
3. Bundle the piping and drain hose together by wrapping
them with vinyl tape, enough to cover where they fit into
the rear piping housing section.
Wrench
Indoor unit tubing
Drain pipe
Connection pipe
Vinyl tape (wide)
Connecting cable
Open-end wrench (fixed)
Flare nut
Indoor unit drain hose
Vinyl tape(narrow)
Adhesive
Plastic bands
Insulation material
Wrap with vinyl tape
Vinyl tape(narrow)
Connection pipe
Indoor unit pipe
Pipe
- 25 -
Wrap with vinyl tape
Pipe
Vinyl tape(wide)
Drain hose
Service Manual
Flaring Work and Connection of Piping
For left rear piping
1. Route the indoor tubing and the drain hose to the required
piping hole position.
2. Insert the piping, drain hose, and the connecting cable into
the piping hole.
3.
Insert the connecting cable into the indoor unit.
• Don't connect the cable to the indoor unit.
• Make a small loop with the cable for easy connection
later.
4. Tape the drain hose and the connecting cables.
5. Indoor unit installation
• Hang the indoor unit from the hooks at the top of the
installation plate.
• Insert the spacer. between the indoor unit and the instal-
lation plate to separate the bottom of the indoor unit from
the wall. (The spacer is used to ease installation and will
be removed later on per the installation instructions.)
Connecting
cable
Drain pipe
Indoor unit
Spacer
Installation plate
8cm
Connecting the piping to the indoor unit and the drain
hose to drain pipe.
1. Align the center of the pipes and sufficiently tighten the
flare nut by hand.
2. Tighten the flare nut with a wrench.
Outside diameter Torque
mm inch kg.m lbf.in
Ø6.35 1/4 1.8 156.2
Ø9.52 3/8 4.2 364.5
3. Next, extend the indoor unit's drain hose.
Then attach the drain pipe.
Indoor unit tubing Flare nut Pipes
Open-end wrench (fixed)
Flare nut
Wrench
Indoor unit tubing
Drain hose
Indoor unit drain hose
Vinyl tape
Adhesive
Connection pipe
(narrow)
Wall Mounted Multi-Zone Split System Air Conditioner
- 26 -
Wrap the insulation material around the connecting por-
Plastic bands
Insulation material
tion.
1. Overlap the connection pipe insulation and the indoor unit
pipe heat insulation material. Bind them together with vinyl
tape so that there is no gap.
2. Wrap the area which accommodates the rear piping housing section with vinyl tape.
3. Bundle the piping and drain hose together by wrapping
them with vinyl tape over the range within which they fit
into the rear piping housing section.
Reroute the pipings and the drain hose across the back
of the chassis.
Flaring Work and Connection of Piping
Connection
pipe
Vinyl tape
(wide)
Connecting cable
Drain hose
Wrap with vinyl tape
Pipe
Vinyl tape(narrow)
Pipe
Vinyl tape(narrow)
Wrap with
vinyl tape(wide)
Indoor
unit piping
Indoor unit installation
1. Remove the spacer.
2. Ensure that the hooks are properly seated on the installation plate by moving it left and right.
3. Press the lower left and right sides of the unit against the
installation plate until the hooks engage into their
slots(clicking sound).
- 27 -
Piping for
passage through
piping hole
Connecting
cable
Drain hose
Service Manual
Flaring Work and Connection of Piping
Installation Information. For left piping. Follow the instruction below.
Good case
• Press on the upper side of clamp and unfold the tubing to slowly downward.
Bad case
• Bending the pipe from right to left may cause damage to the tubing.
Wall Mounted Multi-Zone Split System Air Conditioner
- 28 -
REMOTE CONTROL PREPARATION(OPTIONAL)
HOW TO MOUNT ONTO A WALL
HOW TO INSERT BATTERIES
HOW TO INSERT BATTERIES
Remove the battery cover from the remote controller.
• Slide the cover according to the arrow direction.
Insert the two batteries.(AAA, 1.5V)
• Be sure that the (+) and (-) directions are correct.
• Be sure that both batteries are new.
Re-attach the cover.
• Slide it back into position.
Flaring Work and Connection of Piping
• Do not use rechargeable batteries,
such batteries differ from standard dry
cells in shape, dimensions, and performance.
• Romove the batteries from the remote
controller if the air conditioner is not
going to be used for a long length of
time.
- 29 -
Service Manual
Flaring Work and Connection of Piping
Outdoor unit
36 kBtu/h
Outdoor unit
18/24 kBtu/h
Outdoor
Align the center of the piping and sufficiently tighten the flare
nut by hand.
Finally, tighten the flare nut with torque wrench until the
wrench clicks.
• When tightening the flare nut with torque wrench, ensure
the direction for tightening follows the arrow on the wrench.
Outside diameter Torque
mm inch kg.m lbf.in
Ø6.35 1/4 1.8 156.2
Ø9.52 3/8 4.2 364.5
A-UNIT
Gas side piping
B-UNIT
Liquid side piping
Torque wrench
A-UNIT
Gas side piping
B-UNIT
Liquid side piping
C-UNIT
Wall Mounted Multi-Zone Split System Air Conditioner
Torque wrench
- 30 -
Air
Conditioner
Main power source
Circuit Breaker
Use a circuit breaker
or time delay fuse.
Connecting the Cable between Indoor Unit and Outdoor Unit
GN/YL
20 mm
(0.79 inch)
Line voltage (208~230V)
18 / 24 kBtu/h 36 kBtu/h
GN/YL
20 mm
(0.79 inch)
Line voltage (208~230V)
AWG14
AWG12 (Allowable temperature
to the wire rated at least 90C˚)
Connecting the Cable between Indoor Unit and Outdoor Unit
Connect the cable to the Indoor unit.
Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individually
according to the outdoor unit connection. (Ensure that the color of the wires of the outdoor unit and the terminal No. are
the same as those of the indoor unit.)
The ground wire should be longer than the common wires.
The circuit diagram is subject to change without notice.
When installing, refer to the electrical diagram behind the front panel of Indoor Unit.
The wiring for the outdoor unit can be found on the inside of the Outdoor Unit control cover.
WARNING:
• The circuit diagram is subject to change without notice.
• Be sure to connect wires according to the wiring diagram.
• Connect the wires firmly, so that they can not be pulled out easily.
• Connect the wires according to color codes by referring to the wiring diagram.
WARNING: Provide a circuit breaker
between power source and the outdoor
unit as shown below.
WARNING:
The power cord connected to the outdoor unit should comply with the following specifica-
tions: ETL recognized and CSA certified.
The power connecting cable connected to the indoor and outdoor unit should comply with the following
specifications: ETL recognized and CSA certified.
AWG18
Low voltage (below 40V)
WARNING: When using the separate wires as the power cord, please secure the separate wires into
the control box panel using tie wraps to hold all wires together in place.
- 31 -
GN/YL
20mm
Service Manual
Connecting the Cable between Indoor Unit and Outdoor Unit
NOTICE
Outdoor unit
Over 5mm
(0.2inch)
Holder for
power supply
cord
Connecting
cable
Control cover
Terminal block
Power supply
cable
Connect the cable to the Outdoor unit.
1. Remove the control cover from the unit by loosening the
screw.
Connect the wires to the terminals on the control board
individually as the following.
2. Secure the cable onto the control board with the holder
(clamper).
3. Re-attach the control cover to the original position using
the screws.
18 kBtu/h
Power Source
208/230V AC
(High voltage)
Teminal on the Outdoor Unit
Power Source
208/230V AC
(High voltage)
Teminal on the Outdoor Unit
Power Source
208/230V AC
(High voltage)
Teminal on the Indoor Unit
A-UNIT
43
432121
Teminal on the Outdoor Unit Teminal on the Outdoor Unit
A Indoor B Indoor
Teminal on the Indoor Unit
Connecting cable(Low voltage)
4321L1 L2
24 kBtu/h
Teminal on the Indoor Unit
A-UNIT
L2L1
Teminal on the Outdoor Unit
432121
Teminal on the Indoor Unit
43
Teminal on the Outdoor Unit
B IndoorA Indoor
36 kBtu/h
Teminal on the Indoor Unit
A-UNIT
L2L1
Teminal on the Outdoor Unit
432121
Teminal on the Indoor Unit
43
Teminal on the Outdoor Unit
B IndoorA Indoor
B-UNIT
B-UNIT
B-UNIT
4321
4321
Connecting cable(Low voltage)
4321
Teminal on the Indoor Unit
4321
4321
C-UNIT
Teminal on the Outdoor Unit
C Indoor
4321
Connecting cable(Low voltage)
4321
:
1. Separately wire the high and low voltage lines.
2. Use heat resistant electrical wiring capable of withstanding temperatures up to 75°C(167°F).
3.Use outdoor waterproof connection cable rated for at least 300V for the connection between indoor and outdoor unit.
(For example, Type SJO-WA)
WARNING:
• Be sure to comply with local codes while running the wire from the indoor unit to the outdoor unit(size of
wire and wiring method, etc).
• Every wire must be connected firmly.
• No wire should be allowed to touch refrigerant tubing, the compressor or any moving parts.
Wall Mounted Multi-Zone Split System Air Conditioner
- 32 -
High voltage
Low voltage
Strip 10mm(3/8")
Round
terminal
Connecting cable
Loosening the
terminal block
screw
Fastening the
wire tightly
Strand wire
G
Terminal
block
Lock nut
Power supply line
(1ø, 230/208V)
Conduit panel
Cap(Reuse)
Cord clamp
Hole
(for low voltage line)
Cap(Remove)
Taping
(for sealing)
Low voltage line
(connecting cable)
Connecting the Cable between Indoor Unit and Outdoor Unit
Methods of connecting the cable
(1) Remove two-caps on the conduit panel.
(for low voltage line)
(2) Pull out connection cable through conduit.
(3) After conduit to the panel, fix nut to the opposite
side of panel.
(4) Pass the connection cable through the hole.
(5) Properly connect the cable on the terminal block.
(6) Fix the connection cable with cord clamp provided
on the unit to reduce strain at the terminal when the
connection cable is pulled outside up to a 35 pound
weight
When connecting each power wire to the corresponding terminal,
follow instructions "How to connect wiring to the terminals" and
fasten the wire tightly using the screw on the terminal plate.
How to connect wiring to the terminals
For strand wiring
(1) Cut the wire end with a wire cutter or wire-cutting pliers,
then strip the insulation to expose the strand wiring about
10mm(3/8").
(2) Using a screwdriver, remove the terminal screw(s) on the
terminal plate.
(3) Using a round terminal fastener or pliers, securely clamp
each stripped wire end with a round terminal.
(4) Position the round terminal wire, and replace and tighten
the terminal screw using a screwdriver.
WARNING: Loose wiring may cause the terminal to overheat or result in unit malfunction. A
fire hazard may also exist. Therefore, be sure
all wiring is tightly connected.
- 33 -
Service Manual
Connecting the Cable between Indoor Unit and Outdoor Unit
Air
Conditioner
Circuit Breaker
Use a circuit
breaker or time
delay fuse.
Main power source
Model Power source
Fuse or breaker
Capacity
1Ø, 230 / 208V
20 A
1Ø, 230 / 208V
25 A
1Ø, 230 / 208V
40 A
18 kBtu/h
24 kBtu/h
36 kBtu/h
Connecting cable
CAUTION: Provide a circuit breaker between power source and the unit as shown
below.
Connect the cable to the indoor unit
1. Connect the wires to the terminals on the control board
individually according to the outdoor unit connection.
• Ensure that the color of the wires of outdoor unit and the
terminal No. are the same as those of indoor unit respectively.
2. Attach the Grille onto the cabinet.
• Grasp the lower left and right side of the Grille and
engage four tabs on the top inside edge of the chassis.
• Press the Grille toward the chassis until it goes back into
place.
Wall Mounted Multi-Zone Split System Air Conditioner
- 34 -
Checking the Drainage, Insulating the Pipe and Special Piping Applications
Checking the Drainage, Insulating the Pipe and Special Piping Applications
Checking the drainage
To check the drainage.
1. Pour a glass of water on the evaporator.
2. Ensure the water flows through the drain hose of the
indoor unit without any leakage and goes out the drain exit.
Drain piping
1. The drain hose should point downward for easy drain flow.
2. See below for examples of incorrect drain pipe applications, which will cause poor condensate flow.
Accumulated
drain water
Air
Kinking
Water
leakage
Do not raise
Water
leakage
Water
leakage
Tip of drain hose
dipped in water
Ditch
Downward slope
Less than
50mm gap
- 35 -
Service Manual
Checking the Drainage, Insulating the Pipe and Special Piping Applications
Seal any small opening
around the piping
with gum type sealant.
Trap
Trap
• Trap is required to prevent water from entering
into electrical parts.
Plastic
band
Taping
Drain hose
Piping
Connecting
cable
Power supply
cord
Seal any small
opening around
the piping with
gum type sealant.
Insulating the Pipe and Special Piping Applications
Insulate the piping by wrapping the connecting portion of the indoor unit with
insulation material and secure it with
two layers of vinyl tape.
• If you want to connect an additional drain hose, the end
of the drain outlet should be routed above the ground.
Secure the drain hose appropriately.
In cases where the outdoor unit is
installed below the indoor unit, perform
the following:
1. Tape the piping, drain hose and connecting cable from
downward to upward.
2. Secure the taped piping along the exterior wall using
saddle or equivalent.
In cases where the Outdoor unit is
installed above the Indoor unit, perform
the following.
1. Tape the piping and connecting cable from down to up.
2. Secure the taped piping along the exterior wall. Form a
trap to prevent water entering the room.
3.
Secure the piping onto the wall using a saddle or equivalent.
Wall Mounted Multi-Zone Split System Air Conditioner
- 36 -
NOTICE
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
Indoor unit
Outdoor unit
Lo Hi
Manifold valve
Pressure
gauge
Air Purging and Evacuation
Air Purging and Evacuation
Air and moisture remaining in the refrigerant system have undesirable effects as indicated below.
1. Pressure in the system rises.
2. Operating current rises.
3. Cooling(or heating) efficiency drops.
4. Moisture in the refrigerant circuit may freeze and block capillary tubing.
5. Water may lead to corrosion of parts in the refrigeration system.
Therefore, the indoor/outdoor unit and connecting tube must be checked for leaks, and vacuumed to remove incondensible
gas and moisture in the system.
Leak checking
Preparation
• Check that each copper pipe(both liquid and gas side) between
the indoor and outdoor units have been properly connected and
all wiring for the test run has been completed. Remove the service valve caps from both the gas and the liquid side on the outdoor unit. Check that both the liquid and the gas side service
valves on the outdoor unit are kept closed at this stage.
Leakage test
• Connect the manifold valve(with pressure gauges) and dry nitrogen gas cylinder to this service port with charge hoses.
CAUTION: Be sure to use a manifold
valve for leak testing.
The high side manifold valve must always
be kept closed.
• Pressurize the system to no more than 150 P.S.I.G. with dry
nitrogen gas and close the cylinder valve when the gauge
reading reached 150 P.S.I.G. Next, test for leaks with liquid
soap.
CAUTION:
refrigerant system in a liquid state, the top
To avoid nitrogen entering the
of the cylinder must be higher than its bottom
when you pressurize the system. Usually, the
cylinder is used in a vertical standing position.
1. Do a leakage test of all joints of the copper piping(both
indoor and outdoor) and both gas and liquid side service
valves.
Bubbles indicate a leak. Be sure to wipe off the soap with a
clean cloth.
2. After the system is found to be free of leaks, relieve the
nitrogen pressure by loosening the charge hose connector
at the nitrogen cylinder. When the system pressure is
reduced to normal, disconnect the hose from the cylinder.
:
Leakage testing shoud be done for each
indoor unit connection set, separately.
- 37 -
Service Manual
Air Purging and Evacuation
NOTICE
Indoor unit
Outdoor unit
Lo Hi
Manifold valve
Vacuum pump
Pressure
gauge
Open
Close
Evacuation
1. Connect the charge hose end described in the preceding
steps to the vacuum pump to evacuate the tubing and
indoor unit.
Confirm the "Lo" knob of the manifold valve is open. Then,
run the vacuum pump.
The operation time for evacuation varies with tubing length
and capacity of the pump. The following table shows the
time required for evacuation.
Required time for evacuation when 4 CFM vacuum
If tubing length is less
than 10m (33 ft)
10 min. or more 15 min. or more
pump is used
If tubing length is longer
than 10m (33 ft)
2. When the desired vacuum is reached, close the "Lo" knob
of the manifold valve and stop the vacuum pump.
Finishing the job
1. With a service valve wrench, turn the valve stem of liquid
side valve counter-clockwise to fully open the valve.
2. Turn the valve stem of gas side valve counter-clockwise to
fully open the valve.
3. Loosen the charge hose connected to the gas side service
port slightly to release the pressure, then remove the hose.
4. Replace the flare nut and its bonnet on the gas side service port and fasten the flare nut securely with an
adjustable wrench. This process is very important to prevent leakage from the system.
5. Replace the valve caps at both gas and liquid side service
valves and fasten them tight.
This completes air purging with a vacuum pump.
The air conditioner is now ready for test running.
: Repeat evacuation procedure for each indoor
unit.
Wall Mounted Multi-Zone Split System Air Conditioner
- 38 -
Charging
Charging
■ Each outdoor unit is factory charged (see rating plate) for the evaporator as well as a 7.5m(25ft) line set for each indoor line.
Any time the total line set is used either shorter or longer then the nominal line set length the refrigerant charge has to be
adjusted.
■ Whether the line set is made shorter or longer you must adjust the charge based on how many m(ft) of tubing are either
added or removed based on 20g(0.22oz) of R-410A per meter(foot).
Max total length
Capacity (Btu/h)
18k 30m(100ft) 15m(50ft) 3m(10ft) 7.5m(25ft) 7.5m(25ft) 20g/m(0.22oz/ft)
24k 30m(100ft) 15m(50ft) 3m(10ft) 7.5m(25ft) 7.5m(25ft) 20g/m(0.22oz/ft)
Capacity (Btu/h)
36k 45m(150ft) 15m(50ft) 3m(10ft) 7.5m(25ft) 7.5m(25ft) 20g/m(0.22oz/ft)
of all pipes
(A+B)
Max total length
of all pipes
(A+B+C)
Max length of
each pipe (A/B)
Max length of
each pipe
(A/B/C)
Min length of
each pipe (A/B)
Min length of
each pipe
(A/B/C)
Max Elevation
between each indoor
unit and outdoor unit
(h1)
Max Elevation
between each indoor
unit and outdoor unit
(h1)
Max elevation
between indoor
units (h2)
Max elevation
between indoor
units (h2)
Additional
Refrigerant
Additional
Refrigerant
Example: A 80ft line set is used for tri-zone, an additional 5 ft X 0.22 ounces per foot= add 1.1 ounces of R-410A
Important:
If you are ever uncertain of the unit charge, reclaim, evacuate and weigh in the correct charge using the charge amount specified on the unit's rating plate, adjusting for line sets longer or shorter than 7.5m(25ft) for each indoor unit. Unit is critically
charged.
- 39 -
Service Manual
Test Running
Bolt
Tubing connection
Discharge
temperature
Discharge air
Intake temperature
Test Running
Split Type
1. Check that all copper piping and wiring has been properly connected.
2. Check that the gas and liquid side service valves are
fully open.
1) Prepare remote controller
Remove the battery cover by pulling it according to
the arrow direction.
Insert new batteries making sure that the (+) and (–)
of battery are installed correctly.
Reattach the cover by pushing it back into position.
4) Evaluation of the performance
Operate unit for 15~20 minutes, then check the system
refrigerant charge:
1. Measure the pressure of the gas side service valve.
2. Measure the temperature of the intake and discharge of
air.
3. Ensure the difference between the intake temperature
and the discharge is more than 8°C(14.4°F) (Cooling) or
reversely (Heating).
NOTE:
• Use 2 AAA(1.5volt) batteries. Do not use rechargeable
batteries.
• Remove the batteries from the remote controller if the system is not going to be used for a long time.
2) Precautions in test run
3) Settlement of outdoor unit
■ The initial power supply must provide at least 90% of
the rated voltage.
Otherwise, the air conditioner should not be operated.
■ First operate the unit in cooling, even if you are testing the unit in the winter/heating season.
Operating the unit in heating first during the test run
can cause compressor trouble.
■ Carry out the test run more than 5 minutes without
failure. (Test run will be cancelled 18 minutes later
automatically)
■ The test run is started by pressing timer cancel button
five times continuously.
■ To cancel the test run, press any button.
■ Anchor the outdoor unit with a bolt and
nut(ø10mm/0.4inch) tightly and horizontally on a concrete or rigid mount.
■ When installing on the wall, roof or rooftop, anchor the
mounting base securely with a nail or wire assuming the
influence of wind and earthquake.
■ If the vibration from the unit is being transferred to
the indoor unit via the connection of the condensation
hose and/or copper tubing, secure the outdoor unit with
anti-vibration rubber grommets.
Refrigerant
R-410A 35°C (95°F) 8.5~9.5kg/cm2G(120~135 P.S.I.G.)
Outside ambient
TEMP.
The pressure of the gas side
service valve.
Wall Mounted Multi-Zone Split System Air Conditioner
- 40 -
Operation
Operation
Function of control
1. MAIN UNIT FUNCTION
• DISPLAY
Operation Indicator
• On while in appliance operation, off while in appliance pause
• Flashing if unit is disconnected or has experienced a short in the thermistor (3 seconds off/0.5 sec on).
Sleep Timer Indicator
• On while in sleep time mode, off when sleep timer mode is canceled or appliance operation is paused.
Timer Indicator
• On while in timer mode (on/off), off when timer mode is completed or canceled
Defrost Indicator
•
Off except when units is in hot start mode (heat pump model only) or while unit is running in defrost control mode.
■ Cooling Mode Operation
• When the intake air temperature reaches 0.5°C(0.9
door fan stop.
°F)
• When it reaches 0.5°C(0.9
Compressor ON Temp ➲ Set point Temp+0.5°C(0.9
Compressor OFF Temp ➲ Set point Temp-0.5°C(0.9
• While the compressor is running, operating with the airflow speed set by the remote control. While compressor
is off, fan operates at low speed regardless of the set point.
above the set point temp, they start to operate again.
°F)
below the set point temp, the compressor and the out-
°F)
°F)
■ Soft Dry Operation Mode
• When the dehumidification operation input by the remote control is received, the intake air temperature is
detected and the set point temp is automatically set according to the intake air temperature.
26°C(78.8
24°C(75.2
18°C(64.4
Intake Air Temp<18°C(64.4
• While the compressor is off, the indoor fan repeats low airflow speed and stop.
• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidification
operation and 4-min compressor off repeat.
Compressor ON Temp. ➲ Set point Temp+0.5°C(0.9
Compressor OFF Temp. ➲ Set point Temp-0.5°C(0.9
• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.
°F)
≤ Intake Air Temp ➲ 25°C(77
°F)
≤ Intake Intake Air Temp<26°C(78.8
°F)
≤ Intake Intake Air Temp<24°C(75.2
°F)
°F)
°F)
➲ Intake Air Temp-1°C(30.2
➲ Intake Air Temp-0.5°C(31.1
➲ 18°C(64.4
°F)
°F)
°F)
°F)
°F)
°F)
■ Heating Mode Operation
• When the intake air temp reaches +3°(37.4
below the set point temp, the compressor is turned on.
Compressor ON Temp. ➲ Set point Temp.
Compressor OFF Temp. ➲ Set point Temp.+3°C(37.4
• While compressor is on, the indoor fan is off when the indoor pipe temp. is below 20°C(68
27°C(80.6
°F)
, it operates at low speed. When the indoor pipe temp is between 20°C(68
°F)
…above the set point temp, the compressor is turned off. When
°F)
- 41 -
°F)
, when above
°F)
and 27°C(80.6
°F)
, it
Service Manual
Operation
operates (except in sleep mode, the airflow will be at medium speed).
• While compressor is off, the indoor fan is off when the indoor pipe temp is below 33°C(91.4
°F)
35°C(95
• While in defrost mode, the indoor and outdoor fans are turned off.
, it operates with the low airflow speed.
°F)
, when above
■ Defrost Control(Heating)
• While in defrost mode, the indoor and outdoor fans are turned off.
• Defrost operation is controlled by timer and sensing temperature of the outdoor pipe.
• The first defrost cycle starts only when the outdoor pipe temperature falls below -6°C (21.2° F) after 35 minutes has passed from the start of the heating operation and more than 4 minutes since the last of operation of
the compressor.
• Defrost ends after 12 minutes passed from starting of defrost operation when the outdoor pipe temperature
rises over 15°C(59
• The second defrost cycle starts only when the outdoor pipe temperature falls below -6°C(21.2
utes passed from ending the second defrost cycle and more than 4 minutes since the last operation of the
compressor.
°F)
even before 12 minutes.
°F)
after 35 min-
■ Fuzzy Operation
• When the unit is turned on and an operation mode has not been selected, after 3 hours has passed, the operation mode will be automatically selected via fuzzy operation.
• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and only
the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake air
temp at that moment as follows.
24°C(75.2
21°C(69.8
Intake Air Temp<21°C(69.8
• However, if any of the operation modes among cooling / dehumidification / heating mode operations has been
carried out for 10 sec or longer before Fuzzy operation, the last mode that the unit operated in will be automatically selected.
°F)
≤ Intake Air Temp ➲ Fuzzy Operation for Cooling
°F)
≤ Intake Air Temp<24°C(75.2
°F)
°F)
➲ Fuzzy Operation for Dehumidification
➲ Fuzzy Operation for Heating
1) Fuzzy Operation for Cooling
• According to the set point temperature selected by Fuzzy rule, when the intake air temp is 0.5°C(0.9
below the set point temp, the compressor is turned off. When 0.5°C(0.9
the compressor is turned on.
Compressor ON Temp ➲ Set point Temp +0.5°C(0.9
Compressor OFF Temp ➲ Set point Temp + 0.5°C(0.9
• At the beginning of Fuzzy mode operation, the set point temperature is automatically selected according to the
intake air temp at that time.
26°C(78.8
24°C(75.2
22°C(71.6
18°C(64.4
Intake Air Temp<18°C(64.4
• When the Fuzzy key (Temperature Control key) is input after the initial set point temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the set point temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.
°F)
≤ Intake Air Temp ➲ 25°C(77
°F)
≤ Intake Air Temp<26°C(78.8
°F)
≤ Intake Air Temp<24°C(75.2
°F)
≤ Intake Air Temp<22°C(71.6
°F)
°F)
°F)
°F)
➲ Intake Air Temp + 1°C(1.8
➲ Intake Air Temp + 0.5°C(0.9
➲ Intake Air Temp
➲ 18°C(64.4
°F)
°F)
°F)
°F)
°F)
or more above the set point temp,
°F)
°F)
°F)
or more
Wall Mounted Multi-Zone Split System Air Conditioner
- 42 -
Operation
2) Fuzzy Operation for Dehumidification
• According to the set point temperature selected by Fuzzy rule, when the intake air temp is 0.5°C(0.9
°F)
more below the set point temp, the compressor is turned off. When 0.5°C(0.9
temp, the compressor is turned on.
Compressor ON Temp ➲ Set point Temp + 0.5°C(0.9
Compressor OFF Temp ➲ Set point Temp+0.5°C(0.9
• At the beginning of Fuzzy mode operation, the set point temperature is automatically selected according to the
intake air temp at that time.
26°C(78.8
24°C(75.2
22°C(71.6
18°C(64.4
Intake Air Temp<18°C(64.4
• When the Fuzzy key (Temperature Control key) is input after the initial set point temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the set point temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or , except in dehu-
midification mode where the indoor fan may pause.
3) Fuzzy Operation for Heating
°F)
≤ Intake Air Temp ➲ 25°C(77
°F)
≤ Intake Air Temp<26°C(78.8
°F)
≤ Intake Air Temp<24°C(75.2
°F)
≤ Intake Air Temp<22°C(71.6
°F)
°F)
°F)
°F)
➲ Intake Air Temp+1°C(1.8
➲ Intake Air Temp+0.5°C(0.9
➲ Intake Air Temp
➲ 18°C(64.4
°F)
°F)
°F)
°F)
or more above the set point
°F)
°F)
°F)
or
• According to the set point temperature selected by Fuzzy rule, when the intake air temp is 3°C(37.4
above the set point temp, the compressor is turned off. When below the set point temp, the compressor is
turned on.
Compressor ON Temp ➲ Set point Temp
Compressor OFF Temp ➲ Set point Temp + 3°C(5.4
• At the beginning of Fuzzy mode operation, the set point temperature is automatically selected according to the
intake air temp at that time.
20°C(68
Intake Air Temp<20°C(68
• When the Fuzzy key (Temperature Control key) is input after the initial set point temperature is selected, the
Fuzzy key value and the intake air temperature at that time are compared to select the set point temperature
automatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or medium according to the
intake air temperature and the set point temperature.
°F)
≤Intake Air Temp ➲ Intake Air Temp + 0.5°C(0.9
°F)
➲ 20°C(68
°F)
°F)
°F)
°F)
or more
■ Airflow Speed Selection
• The airflow speed of the indoor fan is set to high, medium, low, or power (auto) by the input of the airflow
speed selection key on the remote control.
■ On-Timer Operation
• When the set time is reached after the time is input by the remote control, the appliance starts to operate.
• The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.
• If the appliance is operating at the time set by the timer, the operation continues.
While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.
■ Off-Timer Operation
• When the set time is reached after the time is input by the remote control, the appliance stops operating.
• The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.
- 43 -
Service Manual
Operation
• If the appliance is paused at the time set by the timer, the pause continues.
■ Off-Timer <=> On-Timer Operation
• When the set time is reached after the on/off time is input by the remote control, the on/off-timer operation is
carried out according to the set time.
■ Sleep Timer Operation
• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote control while in appliance operation, the operation of the appliance stops.
• While the appliance is paused, the sleep timer mode cannot be input.
• While in cooling mode, 30 min later the start of the sleep timer, the set point temperature increases by
1°C(33.8
• When the sleep timer mode is input while in cooling mode, the airflow speed of the indoor fan is set to the low.
• When the sleep timer mode is input while in heating mode, the airflow speed of the indoor fan is set to the
medium.
°F)
. After another 30 min elapse, it increases by 1°C(1.8
°F)
again.
■ Chaos Swing Mode
• By the Chaos Swing key input, the upper/lower vane automatically operates with the Chaos Swing or they are
fixed to the desired direction.
• While in Chaos Swing mode, the angles of cooling and heating cycle operations are different.
■ Chaos Natural Wind Mode
• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the airflow mode is operated for 2~15 sec. randomly by the Chaos Simulation.
■ Jet Cool Mode Operation
• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in cooling,
dehumidification, ventilation the Jet Cool mode is operated.
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min in cooling mode.
• In the Jet Cool mode operation, the room temperature is controlled to the set point temperature, 18°C(64.4
• When the sleep timer mode is input while in Jet Cool mode, Jet Cool mode has the priority.
• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then
operated in order that the air outflow could reach further.
■ Auto Restarting Operation
• When the power is restored after a sudden power failure the appliance is in operation, the mode before the
power failure is kept in the memory. Because of this feature, the appliance automatically operates in the
mode on the memory.
°F)
.
Wall Mounted Multi-Zone Split System Air Conditioner
- 44 -
Operation
■ Forced Operation
• To operate the appliance by force (in case the remote control is lost), the forced operation selection switch is
on the main unit of the appliance and operates it in standard conditions.
• When the power is supplied while the slide switch is in the forced operation position, or the Auto Restart (or
test operation) position or switched from the remote control position to the forced operation position while the
power is on, the forced operation is carried out.
• When the slide switch position is switched from the forced operation position to the Auto Restarting position or
the remote control position, the forced operation is canceled and the appliance stops operating.
• In the forced operation mode, the indoor fan is operated at low speed for 15 sec and then the operation condition is set according to the intake air temperature as follows.
24°C(43.2
21°C(37.8
Intake Air Temp<21°C(37.8
°F)
≤Intake Air Temp ➲ Cooling Mode Operation, 22°C(39.6
°F)
≤Intake Air Temp<24°C(43.2
°F)
°F)
➲ Dehumidification Operation, 23°C(41.4
➲ Heating Mode Operation, 24°C(43.2
°F)
, High Speed
°F)
, High Speed
°F)
, High Speed
■ Buzzer Sound
• When the appliance-operation key is input by the remote control, the short "beep-beep-" sounds.
• When the appliance-pause key is input by the remote control, the long "beep—" sounds.
- 45 -
Service Manual
Operation
On/Off : Lights up during the system operation.
Sleep Mode : Lights up during Sleep Mode Auto operation.
Timer : Lights up during Timer operation.
Defrost Mode
Outdoor unit
operation
: Lights up during Defrost Mode or Hot Start operation (Heat pump model only)
: Lights up during outdoor unit operation.(Cooling model only)
Desire temperature For cooling,dehumidification,heating modes it display Destired temperature
indicator • Cooling : 18°C~30°C(64°F~86°F) • AI : Auto Operation
• Dehumidification : 18°C~30°C(64°F~86°F) • Po : Jet Cool
• Heating : 16~30°C(60°F~86°F) • Lo : Test Mode
• Room temperature sensor. (THERMISTOR)
• Maintains the room temperature in accordance with the set point Temp.
• Indoor fan is delayed for 5 seconds at the starting.
• Restarting is delayed for approx. 3 minutes.
• High, Med, Low, Chaos, Jet Cool
• Intermittent operation of fan at low speed.
• The fan is switched to low(Cooling), med(Heating) speed.
•
The unit will be stopped after user selected1, 2, 3, 4, 5, 6, 7 hours.
• The fan is switched to intermittent or irregular operation
•
The fan speed is automatically switched from high to low speed.
• The louver can be set at the desired position or swing
up and down automatically.(Model base)
Split Type
Indoor Unit
Operation ON/OFF by Remote controlle
r
Sensing the Room Temperature
Room temperature control
Starting Current Control
Time Delay Safety Control
Indoor Fan Speed Control
Operation indication Lamps (LED)
Soft Dry Operation Mode
• Both the indoor and outdoor fans
stop during de-icing.
• Hot start after de-Ice ends.
• The indoor fan stops until the
evaporator piping temperature
reaches 27°C(80.6°F).
Sleep Mode Auto Control
Natural Air Control by CHAOS Logic
* Airflow Direction Control
De-Ice or Defrost Control (Heating)
Hot-start Control (Heating)
Function of Indoor Unit
"Wall Mounted Type is standard"
* Functions is dependent on model type.
Wall Mounted Multi-Zone Split System Air Conditioner
- 46 -
Function of Outdoor Unit
Outdoor Unit
Operating Step
LEV Control
Outdoor Fan Control
• Compressor step varies considering conditions such as room temperature, operating room number,
temperature gap between room temperature and set point temperature and so on.
• The linear expansion valve is pulse is modulated to keep constant superheat or subcooling.
• Outdoor fan operates at High or Off to respond to the load condition.
R/Valve Control(Heating Model Only)
• Reversing valves is used to change cooling to heating, heating to cooling.
Defrost Function
• After 45 minutes in heating mode, defrost mode will take effect if the outdoor pipe temp is below 5°C
(23°F). The defrost mode will end when the outdoor pipe temp is above 12°C (53.6°F) or after the unit
has been operated in cooling mode for 9 minutes.
• To de-ice the outdoor heat exchanger in low temperature conditions, the unit will defrost by changing
the operating mode from heating to cooling, while turning off both indoor and outdoor fans.
Oil Return System
• In single(one) compressor operation duration, another compressor will operate for 30 seconds every 1
hours.
compressor Overload Protection
• To protect compressor from being overloaded, the compressor overload protector will turn the
compressor off.
High Pressure Protction
• If the refrigerant cycle's pressure is too high, above 36.7 kgf/cm2 (521.997psi), the high pressure
switch will turn the compressor off.
Operation
- 47 -
Service Manual
Operation
ON
OFF
CANCEL
AUTO CLEAN
SET
1
3
5
4
9
10
12
14
16
7
2
8
13
11
6
Cooling Operation
Auto Operation or Auto Changeover
Healthy Dehumidification Operation
Flip-up door
(opened)
Heating Operation
Signal transmitter
•
Cooling Model( ), Heat Pump Model( )
15
Operation Mode
(Heat Pump)
(Cooling Only)
Remote Control Operation
The Remote Controller transmits the signals to the system.
1. START/STOP BUTTON
Operation starts when this button is
pressed and stops when the button is pressed again.
2. OPERATION MODE SELECTION BUTTON
Used to select the operation mode.
3. ROOM TEMPERATURE SETTING BUTTONS
Used to select the room temperature.
4. INDOOR FAN SPEED SELECTOR
Used to select fan speed in four steps
low, medium, high and CHAOS.
JET COOL
5.
Used to start or stop the speed cooling/heating.
(speed cooling/heating operates super high fan speed.)
6. CHAOS SWING BUTTON
Used to stop or start louver movement
and set the desired up/down airflow direction.
7. ON/OFF TIMER BUTTONS
Used to set the time of starting and stopping operation.
8. TIME SETTING BUTTONS
Used to adjust the time.
9. TIMER SET/CANCEL BUTTON
Used to set the timer when the desired time is obtained
and to cancel the Timer operation.
10. SLEEP MODE AUTO BUTTON
Used to set Sleep Mode Auto operation.
11. AIR CIRCULATION BUTTON
Used to circulate the room air without cooling or heating.
Wall Mounted Multi-Zone Split System Air Conditioner
12. ROOM TEMPERATURE CHECKING BUTTON
Used to check the room temperature.
13. RESET BUTTON
Used prior to resetting time.
14. 2nd F Button
Used prior to using modes printed in blue at the bottom of
buttons.
15. AUTO CLEAN
Used to set Auto Clean mode.
16. ˚C TO ˚F SWITCHING BUTTON
Used to switch temperature reading from Centigrade to
Fahrenheit.
- 48 -
Disassembly
Ground
Conductor
Indoor Unit
Split Type Indoor Unit
Disconnect the unit from power supply before making any checks.
Be sure the power switch is set to “OFF”.
To remove the Grille from the Chassis.
• Set the up-and-down air discharge louver to open
position (horizontally) by finger pressure.
• Remove the securing screws.
• To remove the Grille, pull the lower left and right
side of the grille toward you (slightly tilted) and lift it
straight upward.
Disassembly
1. Before removing the control box, be sure to
take out the wire screwed at the other end.
- 49 -
Service Manual
Disassembly
Screw
2. To remove the Control Box.
• Remove securing screws.
• Pull the control box out from the chassis
carefully.
3. To remove the Discharge Grille.
• Unhook the discharge grille and pull the
discharge grille out from the chassis carefully.
4. To remove the Evaporator.
• Remove 3 screws securing the evaporator(at the
left 2EA in the Evaporator Holder, at the right
1EA).
• Repairing the unit, do not damage the Caution
label.
Wall Mounted Multi-Zone Split System Air Conditioner
- 50 -
• Unhook the tab on the right inside of the chassis
Motor cover
Bearing
Cross-flow fan
at the same time, slightly pull the evaporator
toward you until the tab is clear of the slot.
5. To remove the Motor Cover
• Remove 2 securing screws.
• Pull the motor cover out from the chassis
carefully.
Disassembly
6. To remove the Cross-Flow Fan
• Loosen the screw securing the cross-flow fan to
the fan motor (do not remove).
• Lift up the right side of the cross-flow fan and the
fan motor, separate the fan motor from the
cross-flow fan.
• Remove the left end of the cross-flow fan from
the self-aligning bearing.
- 51 -
Service Manual
Disassembly
Schematic Diagram
Electronic Control Device
1. Indoor Unit
1) Split Type
Wall Mounted Multi-Zone Split System Air Conditioner
- 52 -
2. Outdoor Unit
P07
SW01F
OR2H,OR7H,OR10H:91K,OR3H-4H,OR8H-9H,OR11H-12H:15K(ETC:20K)
R03T
11
DC 5V
56K
R04T
1K
1
2
7036P
IC01A
CN-JIG
3
4
3
4
22
JIG_RX
JIG_TX
DC 5V
10K
R01T
1K
R02T
C01H-C04H : 103
P21
21
JIG_RX
26
OSC01B
CST-8.00MGW
JIG_TX
+
3
C02A
10
R03A,100
50V
25V
0.01
C01A
R02A,4.7K
R01A,1K
Xin
Vss
Xout
R01B,1M
25
24
P22
RESET
23
22
P20
19
R01F,1K
R02F,10K
R02G,10K
R01G,10K
R04G,10K
R03G,10K
P32
29
30
P33
28
27
P31
P30
L4(C)
L3(C)
L1(A)
L2(B)
PWM(A)
PWM(C)
PWM(B)
P53
P54
46
47
P52
45
51
P60
50
P62
P63
P61
52
53
31
P37
343536
P41
P40
33
32
P36
P35
RX(C)
RX(B)
TX(C)
RX(A)
TX(B)
14
13
P13
P12
P34
111012
P10
P11
TX(A)
CN-LEV(C)
CN-LEV(B)
DC 5V
+
C52M
220
50V
231
231
5
4
5
4
IC03M
44
220
50V
+
C51M
1 132
3
2
50V
55
1
+
220
C50M
1
22
11
OUT_PIPE
OUT_TH
22
33
44
CN-TH2
SUCTION
33
44
DC 5V
R05H-R20H
(ETC: 12.1K 1%)
(R05H,R06H,R07H:6.2K 1%)
DISCHARGE
CN-TH1
11
41
R01H,1K
60
P71
P66
P65
P64
555654
P70
P67
59
57
63
P73
P72
R04H,1K
62
61
P76
P74
P75
R02H,1K
R03H,1K
1
64
7 8 9
P05
P06
5
6
P02
P04
P03
P51
44 4 3
P00
P01
42
43
P47
P50
MICOM
TMP87CM41F
58
TEST
P77
20
2
VSS
AVDD
49
48
VDD
Q01Z
KRA107M
39
40
P44
P46
P45
38
37
P42
P43
DC 5V
CN-LEV(A)
IC02M
423
423
5 5
RY-COMP(A)
RY-FAN(H)
RY-COMP(B)
IC01M
R01Z-R07Z : 4.7K
RY-LIQ
RY-FAN(L)
RY-GAS
RY-4WAY
DC 15V
Schematic Diagram
- 53 -
Service Manual
Schematic Diagram
23.2K
8.06K
8.06K
23.2K
23.2K
8.06K
1%
1%
51.1K
102
100V
C25M
1%
9.1k
R27M
100uf
C24M
+
2
5
4
6
100uF
25V
C26M
R28M
13K
1%
1
5
+
R29M,2K,1%
4
22
51.1K
10K
1
2.94K
6
7
4.7K
PWM(C)
35.7K
4.3K
R26M
10.2K
3
2
1
21.5K
6.04K
KRA101M
Q07M
DC 5V
7
3K 5.23K39.2K 13K
20 20
9
8
R04S
20K
14
51.1K
102
C14M
100V
R15MC13M+1%
100uf 9.1k
2
5
4
6
C15M
25V
100uF
R16M
1
5
+
1%
13K
R17M,2K,1%
4
22 10K
1
51.1K
2.94K
6
7
4.7K
PWM(B)
35.7K
4.3K
10.2K
R14M
2
3
1
21.5K
6.04K
Q04M
KRA101M
DC 5V
7
3K 5.23K39.2K 13K
20
8
20
9
R04S
14
20K
51.1K
102
100V
C02M
R02M
9.1k
1%
100uf
C01M
+
2
5
4
6
100uF
25V
C03M
1
5
R03M
13K
1%
+
R04M,2K,1%
4
22 10K
1
51.1K
6
7
2.94K
PWM(A)
4.7K
35.7K
4.3K
R01M
10.2K
1%
2
3
1
21.5K
6.04K
KRA101M
Q01M
7
DC 5V
3K 5.23K39.2K 13K
R04S
8
20 20
9
14
20K
51.1K
RY-COMP(B)
RY-COMP(A)
51.1K
2SD2220
Q08M
51.1K
R31M
220
3
34K
100K
R33M
1.5K103K
100V
R34MC31M
Vm(C)
MT 15V
94
S/W TRANS6
2
3 7
Q09M
30,1W
R37M
ZD03M
12V
200
R36M
472/250V
C30M
100V
473K
C27M
2
8
10K
R32M
IC06M
63V
680uF
C28M
+
821K
C29M
1KV
L10M
L09M
FMX12S
D05M
Q05M
2SD2220
R19M
51.1K
220
3
34K
R21M
100K
1.5K103K
100V
R22MC21M
Vm(B)
ERB-44-08
D06M
8 4
6
S/W TRANS5
L12M
L11M
11 2
1KV
222K
C33M
3W
68K
R35M
C32M
MT 15V
94
S/W TRANS4
2
3 7
Q06M
R25M
30,1W
12V
200
R24M
ZD02M
u-POWER MODULE
NF02J
C09J~C10J
1uF
C08J
222*2
25V
ZNR01J~ZNR02J
uRM1515-2B
302
D01J
C04J
1M
C06J~C07J
C05J
9mH
472*3
R01J
1mH
NF01J
1uF
1uF
C03J
35V
C10D
102M
561*2
C04D
35V
470UF
12uH
L01D
1000UF
35V
220uF
C05D
10V
220uF
C03D
DC 5V
DC 15V
IC04D
C06D
50V
103
7805
C07D
50V
+
+
103
C02D
470uF
+
2K
R02D
1/2W
MT 15V
C08D
103
50V
L02D
12uH
D101
FB
12
OUT
R202
9
7
+
C01D
GND
PC201
D201
R201
D202
268
C102
BP
TNY
S
D
13
+
C101
R102
OUT
GND
3
NC
DC 0V
6
5
PC201
GND
NC
DC 310V
1
IN
R101
D01D
1N4937
RY-FAN(L)
RY-FAN(H)
RY-GAS
LIVE1
3 3
CN-POWER
NEUTRAL
1
FUSE
ZNR01J
250V/T5A
INR14D471K
SVC561D-14A
1
COMP B
COMP A
43
LIVE2
43
NF01M
HOT GAS
FAN LOW
FAN HI
1
1
NF02M
1
1
1
NF04M
NF03M
1
CN-FAN
COM(A)
COM(B)
COM(C)
DKS-10D-22
1/2W
560K
R11M
51.1K
472/250V
C19M
C16M
100V
473K
8
2
10K
R20M
IC05M
63V
C17M
680uF
+
C18M
821K
1KV
L06M
L05M
FMX12S
D03M
Q02M
2SD2220
51.1K
R06M
220
3
34K
R08M
100K
1.5K103K
100V
R09MC09M
Vm(A)
ERB-44-08
D04M
8 4
6
S/W TRANS3
L08M
L07M
11 2
C23M
1KV
222K
R23M3W68K
C22M
MT 15V
94
S/W TRANS2
3
2
7
Q03M
30,1W
R13M
ZD01M
12V
200
R12M
472/250V
C07M
C04M
473K
100V
8
2
R07M
10K
IC04M
C05M+63V
680uF
C06M
821K
1KV
L02M
L01M
D01M
FMX12S
ERB-44-08
D02M
8 4
6
S/W TRANS1
L03M
L04M
11 2
1KV
C11M
222K
3W
68K
R10M
C10M
+
NTC
450V
330UF
C12M
COM(B)
3
20TX(B)
1K
R14K
102
C03K
TX(C)
RX(C)
RX(B)
RY-LIQ
RY-4WAY
R15K
10K
R12K
10K
R16K
3
2
1
8
4
20
8
4
7
5
6
R10K
1K
C02K
102
2
1
4
IC03K
4
7
5
6
8
COM(C)
DC 15V
Vm(C)
Vm(B)
DC 15V
DC 0V
BD01M
D15XB60
DC 310V
RX(A)
DC 15V
TX(A)
DC 5V
R13K
1K1K
R01K
1K
R09K
10K
R07K
R05K
R11K
10K
C01K
1K
102
8
4
7
5
6
10K
R06K
IC02K
10K
R08K
8
R02K
R04K
10K
R03K
IC01K
2
3
1
8
4
20
COM(A)
Vm(A)
DC 15V
LIQUID
1
NF05M
1
1
1
4WAY
324
324
314
3
1
CN-COM3
4
412
412
CN-COM2
231
CN-COM1
231
Wall Mounted Multi-Zone Split System Air Conditioner
- 54 -
Wiring Diagram
1. Indoor Unit
Schematic Diagram
2. Outdoor Unit
1)A-MMC18FA-1 2)A-MMH18FA-1
- 55 -
Service Manual
Schematic Diagram
3) A-MMC24FA-1 4) A-MMH24FA-1
5) A-MMC36FA-1 6) A-MMH36FA-1
Wall Mounted Multi-Zone Split System Air Conditioner
- 56 -
Component Locations
PCB :6870A90409B
ASSY:6871A20771
6871A20782
1. Indoor Unit
MAIN P.C.B. ASSEMBLY
1) Split Type
• TOP VIEW
Schematic Diagram
• BOTTOM VIEW
- 57 -
Service Manual
Schematic Diagram
2. Display ASSEMBLY
1) Split Type (6871A20680)
Wall Mounted Multi-Zone Split System Air Conditioner
- 58 -
3. Outdoor Unit
1) Component side
Schematic Diagram
- 59 -
Service Manual
Schematic Diagram
2) Solder side
Wall Mounted Multi-Zone Split System Air Conditioner
- 60 -
Troubleshooting Guide
Field Piping
Gas
Field Piping
Liquid
Refrigerant Flow
Th1: Discharge thermistor
Th2: Discharge thermistor
Th3: Outdoor temperature thermistor
Room A
Cooling
EEV-B
EEV-A
Heat
Exchanger
Header
OUTDOOR UNIT
Room B
Ø9.52
Room A
Room B
Ø6.35
Ø6.35
Ø9.52
Th2
High pressure S/W
Th3
Th1
Constant
Compressor
Constant
Compressor
Accumulator
Strainer
Refrigeration Cycle Diagram
1. A-MMC18FA-1
Troubleshooting Guide
2. A-MMH18FA-1
Ø9.52
Field Piping
Gas
Field Piping
Liquid
Room B
Room A
Room B
Room A
Ø9.52
Ø6.35
Ø6.35
Refrigerant Flow
Cooling
Heating
Th1: Discharge thermistor
Th2: Discharge thermistor
Th3: Outdoor temperature thermistor
Th4: Defrost thermistor
Header
EEV-B
EEV-A
Accumulator
Strainer
Th1
Constant
Compressor
High pressure S/W
Th2
Constant
Compressor
OUTDOOR UNIT
Th3
Heat
Exchanger
Th4
- 61 -
Service Manual
Troubleshooting Guide
Field Piping
Gas
Field Piping
Liquid
Refrigerant Flow
Th1: Discharge thermistor
Th2: Discharge thermistor
Th3: Outdoor temperature thermistor
Room A
Cooling
EEV-B
EEV-A
Heat
Exchanger
Header
OUTDOOR UNIT
Room B
Ø9.52
Room A
Room B
Ø6.35
Ø6.35
Ø9.52
Th2
High pressure S/W
Th3
Th1
Constant
Compressor
Constant
Compressor
Accumulator
Strainer
Strainer
Refrigerant Flow
Cooling
Heating
Th1: Discharge thermistor
Th2: Discharge thermistor
Th3: Outdoor temperature thermistor
Th4: Defrost thermistor
Field Piping
Gas
Field Piping
Liquid
Room A
EEV-B
EEV-A
Heat
Exchanger
Header
OUTDOOR UNIT
Room B
Ø9.52
Room A
Room B
Ø6.35
Ø6.35
Ø9.52
Th2
High pressure S/W
Th3
Th4
Th1
Constant
Compressor
Constant
Compressor
Accumulator
Strainer
Strainer
3. A-MMC24FA-1
4. A-MMH24FA-1
Wall Mounted Multi-Zone Split System Air Conditioner
- 62 -
Field Piping
Gas
Field Piping
Liquid
Refrigerant Flow
Th1: Discharge thermistor
Th2: Discharge thermistor
Th3: Outdoor temperature thermistor
Room A
Cooling
EEV-B
EEV-A
Heat
Exchanger
Header
OUTDOOR UNIT
Room B
Ø9.52
Room A
Room B
Ø6.35
Ø6.35
Ø6.35
Ø9.52
Room C
Ø9.52
Th2
High pressure S/W
Th3
Th1
EEV-C
Room C
Constant
Compressor
Constant
Compressor
Accumulator
Refrigerant Flow
Cooling
Heating
Th1: Discharge thermistor
Th2: Discharge thermistor
Th3: Outdoor temperature thermistor
Th4: Defrost thermistor
Field Piping
Gas
Field Piping
Liquid
Room A
EEV-B
EEV-A
Heat
Exchanger
Header
OUTDOOR UNIT
Room B
Ø9.52
Room A
Room B
Ø6.35
Ø6.35
Ø9.52
Room C
Ø9.52
Th2
High pressure S/W
Th3
Th4
Th1
EEV-C
Room C
Ø6.35
Constant
Compressor
Constant
Compressor
Accumulator
5. A-MMC36FA-1
Troubleshooting Guide
6. A-MMH36FA-1
- 63 -
Service Manual
Troubleshooting Guide
LED1
LED2
Self-diagnosis Function
■ Error Indicator
• The self-diagnosis function of the air conditioner is used to identify any troubles that may exist.
• Refer to the table below to determine the error code associated with the LED signals given by the indoor air conditioner's display.
• If more than two problems occur simultaneously, one error code of most severity is displayed.
• After an error has occurred, if the error is fixed/cleared, the LED display representing the error code (shown in
the table below) will also be cleared simultaneously.
• To operate the unit after the occurrence of an error code, it is best to power off the unit and then power on again.
Indoor Error
Error code Description MPS Variable LED1 LED2 Indoor Status
00 No Error ON
01 Indoor Room Thermistor Error 1 time OFF
02 Indoor In-Piping Error 2 times OFF
05 Communication Error between In and Out 5 times OFF
06 Indoor Out-Piping Error 6 times OFF
07 Differnt mode operation 7 times OFF
10 Indoor fan motor locked error 1 times OFF
Outdoor Error
Error code Description MPS Variable LED1(Red) LED2(Green) Indoor Status
33 D-Pipe High(Normal) 3 times 3 times OFF
44 Outdoor Air Thermistor Error(Open/Short) 4 times 4 times OFF
45 Cond Pipe Thermistor Error(Open/Short) 4 times 5 times OFF
47
51 Capcity Error(High/Low)
Wall Mounted Multi-Zone Split System Air Conditioner
Const. D-Pipe Thermistor Error(Open/Short)
- 64 -
4 times 7 times OFF
5 times 1 times OFF
Troubleshooting Guide
Cycle Troubleshooting Guide
Trouble analysis
1. Check temperature difference between intake and discharge air, as well as the operating current.
Temp. difference : approx. 0°C(0°F)
Current : less than 80% of
rated current
Temp. Difference
Temp. difference : approx. 8°C
Current : less than 80% of
rated current
Operating Current
Temp. difference : less than 8°C
Current : near the rated cur-
rent
Temp. difference : over 8°C
Notice:
Temperature difference between intake and discharge air depends on room air humidity. When the room air
humidity is relatively higher, temperature difference is smaller. When the room air humidity is relatively lower
temperature difference is larger.
(14.4°F)
(14.4°F)
(14.4°F)
All of the refrigerant many have
leaked out.
Restriction in the refrigeration cycle.
Refrigerant leakage
Clog of refrigeration cycle
Defective compressor
Excessive amount of refrigerant
Normal
2. Check temperature and pressure of refrigeration cycle.
Suction pressure Temperature
(Compared with (Compared with Cause of Trouble Description
the normal value) the normal value)
High Defective compressor Current is low.
Higher
Normal Excessive amount of High pressure does not quickly
refrigerant rise at the beginning of operation.
Insufficient amount of Current is low.
Lower Higher
Notice:
1. The suction pressure is usually 4.5~6.0 kg/cm2(64.0~85.34psi) at normal condition.
2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrapping it
with putty.
refrigerant(Leakage)
or Refrigerant Cycle Restrictions.
Clogging
- 65 -
Service Manual
Troubleshooting Guide
Electronic Parts Troubleshooting Guide
❇ Refer to electronic contorol device drawing & schematic diagram.
Trouble 1
Check the voltage of power(AC208V/AC230V, 60Hz).
• The voltage of main power.
• The voltage applied to the unit.
• The connecting method of Indoor/Outdoor connecting cable (each color)
• The P.C.B. Ass'y
(Fuse, Noise Filter, Power Transformer, IC01D, IC02D, etc.)
The Product doesn’t operate at all.
Turn off the main power and wait until LED on outdoor PCB is off.
Turn on the main power again.
Is "Beeping" sound is made from the indoor unit?
NO
YES
• Primarily, the operating condition of Micom is O.K.
• Check CN-DISP1
The operation check of the P.C.B. Ass'y
Procedure
1) The input voltage of power transformer.
2) The output voltage of power
transformer.
3) IC01D(7812)
4) IC02D(7805)
5) IC01A(KIA7036)
Wall Mounted Multi-Zone Split System Air Conditioner
1) AC230V ± 30V
: Check the rated voltage
2) 15V ± 1.5V
3) DC12V
4) DC5V
5) The voltage of micom pin 29
: DC4.5V↑
Specification
- 66 -
Remedy
1) Replace
power transfomer.
2) Replace
power transfomer.
3) Replace IC01D.
4) Replace IC02D.
5) Replace IC01A.
Troubleshooting Guide
Trouble 2
due to the designed 3 minute delay, which is a protective function anytime the compres-
(When operated in the Sleeping Mode, the fan speed is set to the low speed as designed.)
Caused by the remote controller.
Product doesn't operate with the remote controller.
Turn on main power.
While the compressor has been stopped, the compressor does not operate
sor is stopped.
When the compressor is stopped, the Indoor Fan is driven by a low speed.
At this point the fan speed is not controlled by the remote controller.
Caused by other parts except
the remote controller
When the mark ( ) is displayed in LCD
screen, replace battery.
When the detect switch (double key) inside the
remote controller door is fault, it is impossible to
operate temperature regulating(▲ / ▼) and wind
speed selecting.
Check the Display PCB Ass'y • Check receiver ass'y
Check the contact of CN-DISP 1 connector
Check DISP PCB Ass'y
-Voltage between CN1 ➀ - ➆ : DC +5V
- 67 -
Service Manual
Troubleshooting Guide
Trouble 3
Operate Cooling Mode by setting the disired temperature of the remote controller to less
than one of the Indoor temperature by 1°C(33.8°F) at least.
Check that the sensor for Indoor temperature is attatched and as close as to the Heat
Exchanger (Evaporator.)
When the sensor circuit for Indoor temperature and connector have a bad connection or are
not engaged, Compressor/Outdoor fan is stopped.
The Compressor/Outdoor Fan don't operate
Turn on the main power.
When in air circulation mode, compressor/outdoor fan is stopped.
• Check the related circuit of R01H(1K), R02H(1K), R03H(1K), R04H(1K), Micom(pin No. 74 ,
75 , 76 , 77 ).
• Check that the Indoor temperature sensor is disconnected (about 10K at 25°C(77°F)).
Check the Relay(RY-PWR, RY-START) for driving Compressor.
• Check the voltage between brown and blue cable of terminal which connects to the Outdoor unit
(About AC208V / 230V).
• Check the Outdoor PCB Assembly's relay circuit.
Check Point
Between Micom(No. 50,51) and
GND
Between IC01M(No. 10) and
GND
Comp. ON Comp. OFF
DC 5V DC 0V
DC 12VDC 1V↓
Turn off main power.
Check the electrical wiring diagram of Outdoor side.
Check the open or short of connecting wires between Indoor and Outdoor.
Wall Mounted Multi-Zone Split System Air Conditioner
- 68 -
Troubleshooting Guide
Trouble 4
When indoor Fan does not operate.
When indoor Fan does not operate.
Does the voltage of each terminals of CN-MOTOR CONNECTOR in
Indoor unit corresponds to values in the Table of page 70
Does the voltage of terminal of CN-DC/DC CONNECTOR in Indoor
unit that corresponds to the values in the table of page 70
Does the voltage of terminal of
CN-DC/DC CONNECTOR in
Outdoor unit corresponds to the
values in the table of page 70
NO
Check the patterns and the
conditions of outdoor unit PCB
Assy's.
Check the pattern and the
condition of Indoor unit PCB
Ass'y.
YES
Check the condition of connecting wires between Indoor
and Outdoor unit.
Check connection condition of the CN-MOTOR CONNECTOR
Check for any interference of Indoor Fan.
Check the motor of Indoor Fan
Indoor Fan may be off in the Soft Dry Mode(change to the Cooling Operation Mode).
Indoor Fan is off when Indoor pipe(coil) termperature is lower than 79°F.
(At that time, the defrost indicator is turn on.)
- 69 -
Service Manual
Troubleshooting Guide
1 2 3 4
1
3
4
1 2 3 4
INDOOR
FAN
MOTOR
INDOOR PWB ASSY
Connecting wires
between Indoor
and Outdoor
Indoor
Connecting Terminal
Outdoor
Connecting Terminal
Input Power
TAB-N
CN-MOTOR
CN-DC/DC
RY-COMP-A
3
4
RY-COMP-B
BL BK BR RD
4
3
2
1
CN-COM
BL
BK
BR
RD
+
-
S-Hi Hi Med Low Off
OUTDOO
R CN-
COM
INDOOR
CN-
DC/DC
INDOOR
CN-
MOTOR
No. of pins
DC Voltage(±10%)
4
2
4
3
4
3
3
3
2
2
2
2
35.5
11.97
35.5
15.87
35.5
15.87
32.96
11.97
32.96
15.87
32.96
15.87
25.17
11.97
25.17
15.87
25.17
15.87
17.28
11.97
17.28
15.87
17.28
15.87
0
11.97
0
15.87
0
15.87
Voltage of Connectors according to Indoor Fan Speed
Wall Mounted Multi-Zone Split System Air Conditioner
- 70 -
Troubleshooting Guide
Trouble 5
When Vertical Louver does not operate.
• Confirm that the Vertical Louver is normally geared with the shaft of
Stepping Motor.
• If the regular torque is detected when rotating the Vertical Louver with
hands Normal
• Check the connection condition of CN-UP/DOWN Connector
• Check the soldering condition(on PCB) of CN-UP/DOWN Connector
Check the operating circuit of the Vertical Louver
• Confirm that there is DC +12V between pin (RED) of CN-UP/DOWN and
GND.
• Confirm that there is a soldering short at following terminals.
- Between 60 , 61 , 62 and 63 of MICOM
- Between
- Between 12 , 13 ,
- Between
2 , 3 , 4 and 5 of IC01M
14 , 15
of IC01M
1 , 2 , 3 , 4 and 5 of CN-UP/DOWN
If there are no problems after above checks
• Confirm if the assembly parts are catching and interfering in the rotation of
the Vertical Louver
- 71 -
Service Manual
Troubleshooting Guide
Error Code
■ Trouble Shooting
Error
code
01 Indoor air sensor
02 Indoor inlet pipe sensor
06 Indoor outlet pipe sensor
Description Cause of error Check point & Normal condition
• Open / Short
• Soldered poorly
• Internal circuit error
• Open / Short
• Soldered poorly
• Internal circuit error
• Open / Short
• Soldered poorly
• Internal circuit error
10KΩ
Ω
Normal resistor : 10KΩ / at 25°C(77°F) (Unplugged)
Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged)
Normal resistor : 5KΩ/ at 25°C(77°F) (Unplugged)
Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged)
Normal resistor : 5KΩ/ at 25°C(77°F) (Unplugged)
Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged)
2.5Vdc
V
Check the resistance / voltage
❑ Check Point
1. Unplug the sensor on Indoor unit PCB.
2. Estimate the resistance of each sensor
3. If the resistance of the sensor is 10KΩ/5KΩ at 25°C(77°F), then sensor is normal
4. If the resistance of the sensor is 0 KΩ or ∞, then sensor is abnormal. ➔ Change the sensor.
5. Plug the sensor onto the Indoor unit PCB and Power ON.
6. Estimate the voltage of each sensor.
7. If the voltage of the sensor is 2.5Vdc / at 25°C(77°F), then sensor is normal.
8. If the resistance of the sensor is 0 or 5Vdc, then sensor is abnormal. ➔ Repair or Change the PCB
Wall Mounted Multi-Zone Split System Air Conditioner
- 72 -
Troubleshooting Guide
Error
code
05 / 53
Communication
(Indoor ➔ Outdoor)
Description Cause of error Check point & Normal condition
• Power input AC 230V.(Outdoor, Indoor)
• The connector for transmission is disconnected.
• The connecting wires are misconnected.
• Poor Communication
• The GND 1,2 is not connected at main GND.
• The communication line is shorted at GND.
• Transmission circuit of outdoor PCB is abnormal.
• Transmission circuit of indoor PCB is abnormal.
❑ Check Point
1. Check the input power AC 230V.(Outdoor, Indoor)
2. Check that the communication wires are correctly connected.
➔ Adjust the connection of wire
➔ Confirm the "Live", "Neutral“ wires.
3. Check the resistance between communication line and GND.(Normal : Over 2MΩ)
4. Check the connector for communication is correctly connected.
5. Check the connection of GND1, GND2, and main GND.
6. If one indoor unit is operating normally, outdoor PCB has no problem.
➔ Check the other indoor unit.
* CH05 is displayed at indoor unit, CH53 is displayed at outdoor unit.
- 73 -
Service Manual
Troubleshooting Guide
Error
code
33 D-Pipe Temp. High
Description Cause of error Check point & Normal condition
115°C(239°F)
100°C(212°F)
95°C(203°F)
❑ Check Point
1. Check the install condition for over load.
2. Check is the Service Valve (SVC V/V) is open.
3. Check for leakage of refrigerent.
4. Check the constant compressor.
• Discharge sensor
temp. high
COMP OFF
LEV OPEN(16PULSE/MIN)
LEV OPEN(10PULSE/MIN)
NORMAL
• Check the discharge pipe sensor.
• Check the install condition for over load.
• Check for leakage of refrigerent.
• Check is the Service Valve (SVC V/V) is open.
Error
code
51 Capacitor error
Description Cause of error Check point & Normal condition
❑ Check Point
1. Check the indoor unit capacity.
2. Check the combination table.
➔ single cycle has no error for over capacity.
• Over Capacitor combination
• Check the indoor unit capacity.
• Check the combination table
Wall Mounted Multi-Zone Split System Air Conditioner
- 74 -
Troubleshooting Guide
Error
code
44 Outdoor air sensor
45 Condensor pipe sensor
47 D-Pipe sensor
Description Cause of error Check point & Normal condition
• Open / Short
• Soldered poorly
• Internal circuit error
• Open / Short
• Soldered poorly
• Internal circuit error
• Open / Short
• Soldered poorly
• Internal circuit error
Ω
Ω
Normal resistor : 10KΩ / at 25°C(77°F) (Unplugged)
Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged)
Normal resistor : 5KΩ/ at 25°C
Normal voltage : 2.5Vdc / at 25°C
Normal resistor : 200KΩ/ at 25°C
Normal voltage : 4.5Vdc / at 25°C
(77°F)
(77°F)
(77°F)
(77°F)
(Unplugged)
(plugged)
(Unplugged)
(plugged)
Check the resistance
❑ Check Point
1. Estimate the resistance of each sensor.(Unplugged)
2. Estimate the voltage of each sensor.(Plugged)
3. If the resistance is 0V or 5Vdc, then sensor is abnormal
- 75 -
Service Manual
2-way, 3-way Valve
Flare nut
To
piping
connection
Open position
Closed position
Flare nut
Valve cap
To
piping
connection
Open position
Closed position
Hexagonal wrench
(4mm)
To outdoor unit
Pin
Service
port
Service
port cap
To outdoor unit
2-way, 3-way Valve
2-way Valve (Liguid Side) 3-way Valve (Gas Side)
Control Mechanism Shaft position Shaft position Service port
Factory Setting Closed Closed Closed
(with valve cap) (with valve cap) (with cap)
Air purging Open Closed Open
(Installation) (counter-clockwise) (clockwise) (push-pin or with
1.
vacuum pump)
Operation Open Open Closed
(with valve cap) (with valve cap) (with cap)
Pumping down Closed Open Open
2.
(Transfering) (clockwise) (counter-clockwise) (connected
manifold gauge)
Evacuation Open Open Open
3.
4.
(Servicing) (with charging
cylinder)
Gas charging Open Open Open
(Servicing) (with charging
cylinder)
Pressure check Open Open Open
5.
6.
Wall Mounted Multi-Zone Split System Air Conditioner
(Servicing) (with charging
Gas releasing Open Open Open
(Servicing) (with charging
- 76 -
cylinder)
cylinder)
(1) Pumping down
Indoor unit
Outdoor unit
Liquid side
Close
Gas side
2-Way
valve
Open
3-Way
valve
manifold gauge
Indoor unit
Liquid side
Close
Gas side
2-Way
valve
Open
3-Way
valve
Hi- handle
(CLOSE)
Lowhandle
(CLOSE)
2-way, 3-way Valve
• Procedure
1. Confirm that both the gas side and liquid side
valves are set to the open position.
- Remove the valve stem caps and confirm that the
valve stems are in the raised position.
- Be sure to use a hexagonal wrench to operate
the valve stems.
2. Operate the unit for 10 to 15 minutes.
3.
Stop operation and wait for 3 minutes, then connect the
manifold gauge to the service port of the gas side valve.
- Connect the hose of the gauge with the push pin
to the service port.
4. Air purging of the charge hose.
- Open the Low-handle valve on the gauge
slightly to air purge from the hose.
5. Set the liquid side valve to the closed position.
6.
Operate the air conditioner at the cooling cycle and
stop it when the gauge indicates 1kgf/cm
2
(14.22psi).
7.
Immediately set the gas side valve to the closed position.
- Do this quickly so that the gauge ends up indicating 1kg/
8.
Disconnect the charge set, and replace the liquid side
(14.22psi)
.
and gas side valve caps and the service port nut.
- Use torque wrench to tighten the service port nut to
a torque as indicated below.
Outside diameter Turque
mm inch kg.m lbf.in
Ø6.35 1/4 1.8 156.2
Ø9.52 3/8 4.2 364.5
Ø12.7 1/2 5.5 477.4
- Be sure to check for gas leakage.
•
Be sure not to short the pressure switch S/W, otherwise if the low pressure switch S/W detects low pressure it will stop the compressor.
- 77 -
Service Manual
2-way, 3-way Valve
Indoor unit
Outdoor unit
Liquid side
Open
Gas side
2-Way
valve
Open
3-Way
valve
manifold gauge
Indoor unit
Liquid side
Open
Gas side
2-Way
valve
Open
3-Way
valve
Vacuum pump
Hi- handle
(OPEN)
Lowhandle
(OPEN)
(2) Evacuation
(All the refrigerant leaked)
• Procedure
1. Confirm that both the liguid side valve and gas
side valve are set to the opened position.
2. Connect the vaccum pump to the center hose of
the manifold gauge.
3. Connect the service port of the gas side valve to
the low side of the gauge.
4. Evacuate for approximately one hour.
- Confirm that the gauge needle has moved
toward-76 cmHg (vacuum of 4 mmHg or less).
5. Close the Low handle of the gauge, turn off the
vacuum pump and confirm that the gauge needle
does not move(approximately 5 minutes after
turning off the vacuum pump).
Wall Mounted Multi-Zone Split System Air Conditioner
6. Disconnect the charge hose from the vacuum
pump.
- If the vacuum pump oil becomes dirty or deplet-
ed, replenish as needed.
7. Replace the valve and service port caps.
- 78 -
(3) Gas Charging
manifold gauge
Charging
cylinder
Hi- handle
(OPEN)
Low-handle
(OPEN)
Check valve
Indoor unit
Outdoor unit
Liquid side
Open
Gas side
2-Way
valve
Open
3-Way
valve
Indoor unit
Liquid side
Open
Gas side
2-Way
valve
Open
3-Way
valve
(After Evacuation)
2-way, 3-way Valve
• Procedure
1. Connect the gauge to the charging cylinder.
- Connect the charge hose, which you disconnected from the vacuum pump, to the valve at
the bottom of the cylinder.
- If you are using a gas cylinder, also use a scale
and reverse the cylinder so that the system can
be charged with liquid.
2. Purge the air from the charge hose.
-
Open the valve at the bottom of the cylinder and press
the check valve on the charge set to purge the air.
The procedure is the same if using a gas cylinder.
3. Open the low handle on the gauge and charge
the system with liquid refrigerant.
-
If the system can not be charged with the specified
amount of refrigerant, it can be charged with a little at a
time (approximately 150g(5.29oz) each time) while operating the air conditioner in the cooling cycle; however,
one time is not sufficient, wait approximately 1 minute
and then repeat the procedure(pumping down-pin).
4. Immediately disconnect the charge hose from
the gas side valve's service port.
This is different from previous procedures.
Because you are charging with liquid refrigerant
from the gas side, absolutely do not attempt to
charge with larger amounts of liquid refrigerant
while operating the air conditioner.
-
Stopping part way will allow the gas to be discharged.
-
If the system has been charged with liquid refrigerant while operating the air conditioner turn off
the air conditioner before disconnecting the hose.
5.
Replace the valve stem nuts and the service port nut.
- Use torque wrench to tighten the service port
nut to a torque as indicated below.
Outside diameter Turque
mm inch kg.m lbf.in
Ø6.35 1/4 1.8 156.2
Ø9.52 3/8 4.2 364.5
Ø12.7 1/2 5.5 477.4
- Be sure to check for gas leakage.
- 79 -
Service Manual
135301
152302B
152302A
342800
359011
131410 733010
135312
135311
147581
268711A
146811
147582
346810
135516
35211B
354210
249951
352150
268711B
268711C
267110
135500
152313
567480A
567480B
Exploded View
Exploded View
Indoor Unit
Model : B-MMC09FA-1, B-MMH09FA-1, B-MMC12FA-1, B-MMH12FA-1
Wall Mounted Multi-Zone Split System Air Conditioner
- 80 -
435512
435301
349480
437211
430411
559010
447910
546810
349600
554030
137213B
137213A
435300
567480C
552112
552113A
548490
435511A
552203A
552203B
552203A
552203B
554160A
554160B
661400A
552200
566000
H/P switch
552113B
552114
552201
661400B
649950
W0CZZB
W0CZZA
268711F
561410
567480D
Discharge
552116
435511B
268711H
552202
Outdoor Unit
Model : A-MMC18FA-1, A-MMH18FA-1
Exploded View
- 81 -
Service Manual
Exploded View
552113B
552202
561410
Heat pump type
Heat pump type
Heat pump type
649950
268711F
268711H
435511
552203A
552203B
552203A
552203B
554160A
554160B
Internal
OLP Type
Internal
OLP Type
661400A
552200
552200
567480C
Inlet air + pipe
567480D
Discharge
W0CZZA
349600
W0CZZB
554030
435512
559010
435301
349480
546810
447910
437210
430410
437211
552201
137213A137213B
435300
566000
L/P switch
552114
552116
552113A
552112
661400B
Model : A-MMC24FA-1, A-MMH24FA-1
Wall Mounted Multi-Zone Split System Air Conditioner
- 82 -
546810
546810
349600
552113B
559010
559010
552116
Heat pump type
552203A
552203B
554160B
Internal
OLP type
554160A
567502
554030
447910
430410
435512
435301
349480
435301
349480
437211
137213A137213B
435300
548490
552112
552113
552114
567480C
Air inlet+Pipe
W6640
567480D
Discharge
649950
268711F
268711H
W0CZZA
W0CZZB
435511
561410
552201
552202
661400A
552200
552200
552200
661400B
661400C
Model : A-MMC36FA-1, A-MMH36FA-1
Exploded View
- 83 -
Service Manual
Specifications and performance data subject to change without notice.
HEAT CONTROLLER, INC.
1900 WELLWORTH AVENUE • JACKSON, MICHIGAN 49203
THE QUALITY LEADER IN CONDITIONING AIR
P/No.:3828A20390X 08/06/2008
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