FREE JOINT MULTI AIR CONDITIONER
INDOOR UNIT
MH026FNCA
MH035FNCA
MH052FNCA
MH026FECA
MH035FECA
MH052FECA
OUTDOOR UNIT
MH050FXCA2A
MH080FXCA4A
Manualꢀ
SERVICEꢀ
AIR CONDITIONER
THE FEATURE OF PRODUCT
■
■
Multi Inverter(Free Joint Multi) Series
– Variable Indoor Unit Combination(Free Joint Multi)
– Multi Inverter(Free Joint Multi) Series delivers
comfort to 2~4 rooms with a Single Outdoor Unit
– Smart & Low noise outdoor units in any condition.
Energy Saving
– High Efficiency DC inverter and BLDC Comp.
– Smart Inverter Control algorithm.
–
TBR Sine-Wave Compressor & Sine Wave Controller.
■
■
Convenient Installation
– 485 non Polarity / Auto addressing
– Easy checking system condition by 7-segment
Space Saving & Environmental Friendly
– Compact & Light Outdoor Unit
– Slim and Quiet Indoor Units
Refer to the service manual in the GSPN(see the rear cover) for the more information.
Contents
..............................................................................................................................
................................................................................................................
9. Troubleshooting
9-1
9-1
9-1 Items to be checked first
...............................................................................................
9-2 Checking and Testing operations
9-2
.......................................................................................................
9-3 Fault Diagnosis by Symptom
9-12
9-18
...................................................................................................................................
9-4 PCB Inspection
.......................................................................................................
10. Reference for Installation
10-1
10-1
10-3
10-5
10-7
10-8
10-9
....................................................................................................
.................................................................................
10-1 Selecting Area for Installation
10-2 Connecting Up and Purging the Circuit
..............................................................................................................................
10-3 Refrigerant Refill
.................................................................................................................
................................................................................................................
..............................................................................................................
10-4 Refrigerant Adjustment
10-5 Flare Nut Fixing Torque
10-6 "Pump down" Procedure
...............................................................................................................
.................................................................................................................
.....................................................................................................
11. Reference Information
11-1
11-1
11-3
11-5
11-5
11-6
11-9
11-1 Index for Model Name
11-2 Refrigerating Cycle Diagram
11-3 Pressure & Capacity mark
.........................................................................................................
..............
11-4 The abbreviated technology words & the definition of technology terms
...................................................................................................................
11-5 Q & A for Non-trouble
...............................................................................................
11-6 Common sense of refrigeration
1. Precautions
1-1 Installing the air conditioner
●
Users should not install the air conditioner by themselves.
Ask the dealer or authorized company to install the air conditioner except the window-type air conditioner in U.S.A and Canada.
If you don’t install the air conditioner properly, it may cause a fire, a water leakage or an electric shock.
You must install the air conditioner according to the national wiring regulations and safety regulations.
Install the indoor unit higher than 8.2ft(2.5m) from the floor to avoid the injury caused by the operation of the fan.
(except the window-type air conditioner)
●
●
●
●
●
The manufacturer is not responsible for any accidents or injury caused by an incorrect installation.
When installing the built-in type air conditioner, keep all electric cables such as the power cable and the connection cord in pipes,
ducts, or cable channels to protect them from the danger of impact or any other incidents.
More than 2 indoor units should be installed when you use Free Joint Multi air conditioner.
MH050FXCA2A
●
●
- MH052FNCA and MH052FECA indoor unit cannot be connected to the MH050FXCA2A outdoor unit.
1-2 Power supply and circuit breaker
●
If the power cord of the air conditioner is damaged, it must be replaced by the manufacturer or a qualified person in order to
avoid a hazard.
●
The air conditioner must be plugged into an independent circuit if applicable or connect the power cable to the auxiliary circuit
breaker.
An all pole disconnection from the power supply must be incorporated in the fixed wiring with a contact opening of >0.12inch(mm).
Do not extend an electric cord to the air conditioner.
●
●
The air conditioner must be plugged in after you complete the installation.
1-3 During operation
●
●
●
Do not repair the air conditioner at your discretion.
It is recommended to contact a service center directly.
Never spill any kind of liquid on the air conditioner.
If this happens, turn off the air conditioner and contact an authorized service center.
Do not insert anything between the airflow blades to prevent damage of the inner fan and consequent injury.
Keep children away from the air conditioner.
●
●
●
Do not place any obstacles in front of the air conditioner.
Do not spray any kind of liquid into the indoor unit. If this happens, turn off the air conditioner and contact a service center.
Make sure that the air conditioner is well ventilated at all times:
Do not place a cloth or other materials over it.
●
●
Remove the batteries if you don’t use the remote control for a long time. (If applicable)
Use the remote control within 23ft(7m) from the indoor unit. (If applicable)
Samsung Electronics
1-1
1-4 Disposing of the unit
●
●
Before throwing out the air conditioner, remove the batteries from the remote control.
When you dispose of the air conditioner, consult your dealer. If pipes are removed incorrectly, refrigerant may blow out and
cause air pollution. When it contacts with your skin, it can cause skin injury.
●
The package of the air conditioner should be recycled or disposed of properly for environmental reasons.
1-5 Others
●
●
●
●
Never store or load the air conditioner upside down or sideways to prevent the damage to the compressor.
Young children or infirm persons should be always supervised when they use the air conditioner.
Max current is measured according to IEC standard for safety.
Current is measured according to ISO standard for energy efficiency.
1-2
Samsung Electronics
2. Product Specifications
2-1 The Feature of Product
■ Multi Inverter(Free Joint Multi) Series delivers comfort to 2~4 rooms with a Single Outdoor Unit.
■ Inverter for High Efficiency Operation.
Thanks to inverter control, efficiency of operation of the outdoor unit is enhanced depending on the number of indoor units
operated and the temperature setting.
When only one indoor unit is used, power is saved, resulting in a smaller electricity bill. When all indoor units are used,
high-power operation achieves comfort quickly in all rooms.
■ Installation of indoor units on different floors is possible.
■ Convenient Installation
Auto addressing option : Automated checking of pipe connection.(Refer to the installation manual for detail)
■ Space saving & Environmental Friendly
• Compact & light outdoor unit
• Slim and quiet indoor units
• Pipe size reduction
• Ozone friendly Refrigerant(R410A)
• Lead Free controller.
■ Reliability
• Installation possibilities(Length/Height)
• Convenient installation(485 non polarity/auto-addressing)
• Intelligent control/network
• Easy checking system condition by 7-segment
■ Smart & Low Noise outdoor units in any condition
• TBR/Sine-Wave Controller/Noise Reduction Control/Dual Felt etc.
• Felt Structure : New felt has selected to reduce the noise coming out of the compressor.
Double layered felt structure absorbs noise by two times and felt is also covering top of the compressor to
reduce the noise even more.
Samsung Electronics
2-1
2-2 Product Specifications
Model
MH026FNCA
MH035FNCA
Item
INDOOR UNIT
Type
Wall-mounted
9,000
Wall-mounted
12,000
13,000
-
Cooling
Heating
Dehumidifying
Btu/hr
10,000
-
|/h
Cooling
Perfor-
8.31
9.54
Air Volume
m3/min
mance
Heating
8.56
9.93
Cooling
32
36ꢀ
Noise
dB
ø,V,Hz
W
Heating
32
36ꢀ
Power
1,208~230,60
30
1,208~230,60
35
Cooling
Power Consumption
Heating
30
35
Power
Cooling
0.18
0.19
Operating Current
Heating
A
0.18
0.19
mm
inch
825x285x189
32x11x7.4
7.8kgꢀ
825x285x189
32x11x7.4
7.8kgꢀ
WxHxD
Outer Dimension
Weight
kg
Liquid
Gas
OD(inch)xL(ft)
OD(inch)xL(ft)
DxL(mm)
ø1/4
ø1/4
Refrigerant Pipe
Drain Hose
Size
ø3/8x24.6
ø18x535
Cross-fan
Resin/steel
27ꢀ
ø3/8x24.6
ø18x535
Cross-fan
Resin/steel
27ꢀ
Type
Motor
Blower
Type
Rated Output
W
Heat Exchanger
2ROW 14STEP
EEV
2ROW 14STEP
EEV
Refrigerant Control Unit
2-2
Samsung Electronics
Product Specifications(cont.)
Model
MH052FNCA
Item
INDOOR UNIT
Wall-mounted
18,000
Type
Cooling
Heating
Dehumidifying
Btu/hr
19,000
|/h
-
Cooling
Perfor-
13.21
Air Volume
m3/min
mance
Heating
14.22
Cooling
40
Noise
dB
ø,V,Hz
W
Heating
40
Power
1,208~230,60
50
Cooling
Power Consumption
Heating
50
Power
Cooling
0.30
Operating Current
Heating
A
0.30
mm
inch
1,065x298x128
42x12x8.6
13
WxHxD
Outer Dimension
Weight
kg
Liquid
Gas
OD(inch)xL(ft)
OD(inch)xL(ft)
DxL(mm)
ø1/4x24.6
ø1/2x24.6
ø18x600
Cross-fan
Resin/steel
40ꢀ
Refrigerant Pipe
Drain Hose
Size
Type
Motor
Blower
Type
Rated Output
W
Heat Exchanger
2ROW 16STEP
EEV
Refrigerant Control Unit
Samsung Electronics
2-3
Product Specifications(cont.)
Model
MH026FECA
MH035FECA
MH052FECA
Item
INDOOR UNIT
Slim Duct
12,000
Type
Slim Duct
9,000
Slim Duct
18,000
Cooling
Heating
Cooling
Btu/hr
10,000
8.6
13,000
19,000
9.8
13.6
Air Volume
Perfor-
mance
m3/min
Heating
9.0
10.3
14.2
Cooling
31
32
39ꢀ
Noise
dB
ø,V,Hz
W
Heating
31
32
39ꢀ
Power
1,208~230,60
76
1,208~230,60
76
1,208~230,60
150
Cooling
Power Consumption
Heating
76
76
150
Power
Cooling
0.35
0.35
0.69
Operating Current
Heating
A
0.35
0.35
0.69
mm
inch
900x199x600
35.4x7.8X23.6
26
900x199x600
38.2x7.1x15.4
26
1,100x199x600
1,100x199x600
31
WxHxD
Outer Dimension
Weight
kg
Liquid
Gas
OD(inch)xL(ft)
OD(inch)xL(ft)
ø1/4x24.6
ø3/8x24.6
Sirocco fan
Resin/steel
47ꢀ
ø1/4x24.6
ø3/8x24.6
Sirocco fan
Resin/steel
47ꢀ
ø1/4x24.6
ø1/2x24.6
Sirocco fan
Resin/steel
53ꢀ
Refrigerant Pipe
Size
Type
Motor
Blower
Type
Rated Output
W
Heat Exchanger
2ROW 12STEP
EEV
2ROW 12STEP
EEV
2ROW 12STEP
EEV
Refrigerant Control Unit
2-4
Samsung Electronics
Product Specifications(cont.)
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Samsung Electronics
2-5
2-3 Accessory and Option Specifications
2-3-1 Indoor Unit Accessories
■ MH✳✳✳FNCA
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2-6
Samsung Electronics
Product Specifications
Indoor Unit Accessories(cont.)
■ MH✳✳✳FECA
Item
Descriptions
Code-No.
Q'TY
Remark
S
ON
CTI
RU
'S
NER
I
NST
INST
OW
IO
NES
CC
RU
DE
AL
NU
MA
SO
L'U
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PER
ON
UZI
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ÕES
Ç
RU
INST
DE
AL
NU
MA
N
TIO
ISA
TIL
D'U
EL
NU
MA
N
G
EISU
NW
HSA
UC
RA
GEB
oner
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C
Room
-type
Splut
ma
S
plit
co
ad un
siste
mésti
e
parat
do do
er am
ciona
ità Se
plit
Aire
a
condi
bienti
onado
d
e
'aria
p
on
S
tore
iziona
Cond
tipo
dici
d
ar
c
lho
Apare
Clima
lte ra
sépa
ré
e
de typ
tiseur
lag
e
imaan
umkl
Getei
User
Manual
DB98-29159A
1
S
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R'S
NE
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-type
Splut
ma
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Installation Manual
Pattern Sheet
DB98-29160A
1
1
1
1
1
8
DB97-03906A/B
DB72-00143D
Insulation-Install Outlet
Insulation-Install Inlet
Drain Hose Joint
DB72-00143E
DB94-00758A
DB63-00237A
Indoor
Unit
Rubber
(Grommet Hanger)
Insulation-Drain Out
Insulation-Out
DB62-03439H
DB62-03439J
DB62-03440H
1
2
1
Insulation-Drain In
✳ The design and shape can be changed according to the model.
Samsung Electronics
2-7
Product Specifications
Indoor Unit Accessories(cont.)
■ MH✳✳✳FECA(cont.)
Item
Descriptions
Code-No.
Q'TY
Remark
Cable-tie
DB65-10088C
8
Indoor
Unit
Drain Pipe Holder
DB90-02064A
2
✳ The design and shape can be changed according to the model.
2-8
Samsung Electronics
Product Specifications
2-3-2 Outdoor Unit Accessories
■ MH050FXCA2A/MH080FXCA4A
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Samsung Electronics
2-9
Product Specifications
2-3-3 Transmitter Unit Accessories
Item
Descriptions
Code-No.
Q'TY
Remark
Transmitter
(Ass'y PCB-DVM Plus I/M)
DB9303568A
(MIM-B13)
1
Transmitter Power cable
(Wire Harness-DC Source)
DB39-00378E
(MIM-B13)
1
1
1
Transmitter communication cable
(Connect Wire-COM)
DB39-00253B
(MIM-B13)
Transmitter
Case
DB61-00450B
(MIM-B13)
(Case-Relay PCB Out)
Cable-tie
DB65-10088B
3
1
NS
TIO
UC
TR
INS
R'S
NE
OW
ES
ION
CC
RU
INST
DE
AL
NU
MA
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R
L
PE
NI
ZIO
RU
IST
S
ÕE
UÇ
TR
INS
DE
AL
NU
MA
N
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ISA
TIL
D'U
EL
NU
MA
N
N
G
G
G
EISU
NW
HSA
UC
RA
GEB
EISU
NW
HSA
UC
RA
GEB
N
EISU
NW
ioner
HSA
UC
RA
Air
GEB
C
ondit
Room
type
Splut-
ma
ità Se
plit
S
plit
co
mésti
do do
ciona
siste
parate
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a
r
am
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iziona
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tipo
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c
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ndici
onado
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d
ar
ré
Apare
Clima
lte ra
sépa
lag
e
e
de typ
tiseur
umkl
imaan
DB98-25776A
(MIM-B13)
e
imaan
Getei
lte ra
lag
umkl
Getei
Installation Manual
✳ The design and shape can be changed according to the model.
2-10
Samsung Electronics
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Samsung Electronics
3-1
Alignment and Adjustments
■ MH✳✳✳FECA
The error indicated on the LED display of Indoor unit
Indicators
Concealed Type
Abnormal conditions
Operating
Blue
Red
Standard Type
Power reset
Displayed on
appropriate indoor unit
which is operating
Error of temperature sensor in indoor unit(OPEN/SHORT)
Displayed on
appropriate indoor unit
which is operating
Error of heat exchanger sensor in indoor unit
Error of heat exchanger OUT sensor in indoor unit
Error of outlet temperature sensor in indoor unit
(OPEN/SHORT): For heat pump models only
Error of mixed operation
Displayed on
appropriate indoor unit
which is operating
Displayed on outdoor
unit
Error of outdoor temperature sensor
Error of COND sensor
Error of DISCHARGE sensor
1. No communication for 2 minutes between indoor unit
and outdoor unit (communication error for more than
2 minutes)
1. Error of indoor unit :
Displayed on the
indoor unit regardless
of operation
2. Indoor unit receiving the communication error from
outdoor unit
2. Error of outdoor unit :
Displayed on the
indoor unit which is
operating
3. Outdoor unit tracking 3 minutes error
4. When sending the communication error from outdoor
unit the mismatching of the communication numbers
and installed numbers after completion of tracking.
(communication error for more than 2 minutes)
Self-diagnostic error
(including the indoor unit not detected)
Displayed on
appropriate indoor unit
which is operating
Displayed on outdoor
unit
1. Error of electronic expansion valve close
2. Error of electronic expansion valve open
3. Breakaway of EVA OUT sensor
4. Breakaway of EVA IN sensor
: On
: Flickering
: Off
◆ If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
◆ If you re-operate the air conditioner, it operates normally at first, then detect an error again.
Samsung Electronics
3-2ꢀ
Alignment and Adjustments
■ MH✳✳✳FECA(cont.)
The error indicated on the LED display of Indoor unit
Indicators
Concealed Type
Abnormal conditions
Operating
Blue
Red
Standard Type
Displayed on appropriate
indoor unit which is
operating
Displayed on outdoor
unit
5. Breakaway of COND MID sensor
6. 2nd detection of refrigerant completely leak
7. 2nd detection of high temperature COND
8. 2nd detection of high temperature DISCHARGE
9. COMP DOWN due to 2nd detection of low pressure
switch
10. Error of reverse phase
11. Compressor down due to 6th detection of freezing
12. Self-diagnosis of condensation sensor (G8, G9)
13. Compressor down due to condensation ratio control
Error of float switch
Error of setting option switches for optional accessories
EEPROM error
EEPROM option error
: On
: Flickering
: Off
◆ If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
◆ If you re-operate the air conditioner, it operates normally at first, then detect an error again.
3-3ꢀ
Samsung Electronics
Alignment and Adjustments
3-1-2 Outdoor Unit
Display
REMARK
EXPLANATION(The error indicated on the PCB display of outdoor unit)
Check electrical connection
and setting
Communication error(indoor unable to receive data)
Outdoor unit communication error
(Abnormal data from indoor unit over 60 packet)
Check electrical connection
and setting
Indoor unit room temperature sensor error (Open/Short)
Indoor unit heat exchanger in temperature sensor error (Open/Short)
Indoor unit heat exchanger out temperature sensor error (Open/Short)
Indoor unit sensor error-Evaporator pipe in sensor - Self diagnosis
Indoor unit sensor error-Evaporator pipe out sensor - Self diagnosis
Indoor Unit FAN Error
More than two indoor units cool and heat simultaneously
Indoor Unit EEPROM Error
Indoor Unit EEPROM Option Error
Failure of pipe check operation
Check electrical connection
and setting
No pipe check operation check
- occasion : try to operation after the installation through auto addressing
mode without pipe check operation.
Check setting
Check electrical connection
and setting
The number of Indoor unit mismatched
Check electrical connection
and setting
Communication error between the outdoor and indoor unit
Outdoor communication error between main PCB and sub PCB
Outside temperature sensor error(Short/Open)
- Error level: over 4.9V(-50˚C) under 0.4V(93˚C)
Condenser temperature sensor error(Short/Open)
- Error level: over 4.9V(-50˚C) under 0.4V(93˚C)
Outdoor unit sensor error - Condenser out sensor(Short/Open) - Self diagnosis
Compressor Discharge temperature sensor error
Compressor discharge sensor detached - Self diagnosis
Compressor OLP sensor error (Short/Open)
- Error condition : outdoor temperature under -20˚C
- Error level : over 4.95V(-30˚C) under 0.5V(151˚C)
Samsung Electronics
3-4ꢀ
Alignment and Adjustments
Outdoor Unit(cont.)
Display
REMARK
EXPLANATION(The error indicated on the PCB display of outdoor unit)
check pipe length, indoor
unit filter, refrigerant leakage/
charge and service port
Outdoor unit freezing(Compressor stop)
check pipe length, refrigerant
leakage/charge
Outdoor unit overload - Safety control(Compressor stop)
check pipe length, refrigerant
leakage/charge
Outdoor unit high discharge temperature - Safety control
(Compressor stop)
Outdoor unit EEV open (Stopped indoor unit s) -Self diagnosis
Outdoor unit EEV open (operating indoor unit s) -Self diagnosis
High temperature(over 30˚C) of outdoor as heating mode
Low temperature(under -10˚C) of outdoor as cooling mode
Outdoor Fan Error
Check electrical connection
Communication cable mismatched between indoor and outdoor unit
Inverter compressor starting failure (5 times)
Compressor trip by input current control mode (PFC over current)
Compressor trip by OLP temperature control mode
DC peak error (IPM Over Current)
Compressor Limit Error
DC link Voltage error (under 150V, over 410V)
Abnormal compressor running
(Compressor Rotation Error)
Current sensor error
DC link Voltage sensor error
OTP Error
Inverter micom zero-crossing error
NO GAS error(self diagnosis)
Piping(gas leak)
3-5ꢀ
Samsung Electronics
|