Samsung DH070EZM User manual

INDOOR UNIT
DH070EZM OUTDOOR UNIT UH070EZMC
SERVICE Manual
CONTENTSAIR CONDITIONER
1. Product Specifications
2. Installation
3. Disassembly and Reassembly
4. Refrigerating Cycle Diagram
5. Troubleshooting
6. Exploded Views and Parts List
7. PCB Diagram
8. Wiring Diagram
9. Schematic Diagram
DUCT TYPE AIR CONDITIONER
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1Samsung Electronics
1. Product Specifications
1-1 Table
Btu/hr
Watts
Btu/hr
Watts
Watts
Watts
A
A
r.p.m
r.p.m
r.p.m
r.p.m
m3/min
m3/min
m3/min
m3/min
dB(A)
dB(A)
dB(A)
W
mm
mm
mm
kg
Watts
Watts
A
A
r.p.m
r.p.m
dB(A)
W
kW
m2
kg
23,900
7,000
26,300
7,700
200
200
1.0
1.0
1,050
950
900
850
19.5
17.5
16.5
15.5
46
45
44
D-fin coil
2 x 10 x 1.7(1,100mm)
Sirocco
97
260
1,340
600
41 / 47
2,250
2,250
11.2
11.2
820
400
57
Propeller Fan
60
Rotary
SHV33YC6-G
2.22
Internal
wave fin coil
2 x 24 x 1.5(900mm)
0.55
EEV
R-22
2.1
1ø, 220-240V~, 50Hz
Sound Pressure Level
MODEL DH070EZM
UH070EZMC
INDOOR UNIT
OUTDOOR UNIT
Capacity
Power Supply
Power Input
Running Current
Fan Speed
Air Circulation
Noise Level
(Sound Pressure)
Heat Exchanger
Fan
Dimension
Weight
Power Input
Running Current
Fan Speed
Fan
Compressor
Heat Exchanger
Refrigerant
Cooling
Heating
Cooling
Heating
Cooling
Heating
H.H
Hi
Mid
Low
U-High
High
Mid
Low
High
Mid
Low
Motor Output
H
W
D
Net / Gross
Cooling
Heating
Cooling
Heating
High
Low
Motor Output
Capacity
Face Area
Charge
Type
Row x Stages x Fin Pitch
Type
Type
Type
Model
Protection
Type
Row x Stages x Fin Pitch
Control
Type
Outdoor Unit
Indoor Unit
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Table(cont.)
mm
mm
mm
kg
˚C
˚C
˚C
˚C
mm(inch)
mm(inch)
m
m
638
880
310
67 / 72
27 / 19
20 / 15
35 / 24
7 / 6
9.52(3/8")
15.88(5/8")
Flare
Max. 15
Max. 30
MODEL DH070EZM
UH070EZMC
INDOOR UNIT
OUTDOOR UNIT
Dimension
Weight
Indoor Unit
Outdoor Unit
Pipe O.D. Size
Between
H
W
D
Net / Gross
Cool(DB/WB)
Heat(DB/WB)
Cool(DB/WB)
Heat(DB/WB)
Liquid
Gas
Height
Pipe Length
Connection Method
Outdoor Unit
Condition
Piping
Notice : This model is tested under the external static pressure of 4mmAq.
Notice :Air Flow rate : Fan Step Control : Low → Mid → High → Ultra High
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(Unit : mm)
1-2 Dimensions
1-2-1 Indoor Unit
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Product Specifications
Samsung Electronics4
1-2-2 Outdoor Unit
(Unit : mm)
310
638
660
880
(Front View) (Rear View)
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1. Before installing the indoor unit, assign an address to the indoor unit according to the air conditioning system plan.
2. The address of the indoor unit is assigned by adjusting MAIN(SW02) and RMC(SW01) rotary switches.
3. The MAIN address is for communication between the indoor unit and the outdoor unit.
Therefore, you must set it to operate the air conditioner properly.
4. It is required to set the RMC address if you install the wired remote controller and/or the centralized controller.
5. If you install optional accessories such as the wired remote controller, centralized controller, etc. see an appropriate
installation manual.
6. If an optional accessory is not installed, you do not have to set the RMC address. However, adjust K1 and K2 switches of
the SW03 DIP switch to "ON" position in this case.
7. Set the MAIN address by adjusting the rotary switch(SW02) from 0 to F. Each indoor unit connected to the same outdoor
unit must have different address.
7. i. e. If an indoor unit does not have an optional accessory and its
MAIN address is "4".
K1 K2 K3 K4
K5 K6 K7 K8
K9
K10 K11 K12
SW02 MAIN SW01 RMC
SW03
SW04
SW05
K1 K2 K3 K4
K5 K6 K7 K8
K9
K10 K11 K12
SW02 MAIN
SW03
SW04
SW05
SW01 RMC
2. Installation
2-1 Assigning Address to Indoor Unit
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2-2 Additional Functions
■Compensation for lost temperature in heating operation
■ •Reduces the difference between an actual room temperature and a sensed
■ •temperature by the air conditioner when heating.
■Adjusting filter cleaning cycle
■ •You can adjust the cycle for filter sign indicator.
■Hot water heater
■ •You must adjust the K7 when you install the hot water heater.
K6 1000 hours 2000 hours
Switch No. Switch ON Switch OFF
K7 No use of hot water heater Use of hot water heater
Switch No. Switch ON Switch OFF
SW04
K5 K6 K7 K8
SW04
K5 K6 K7 K8
SW04
K5 K6 K7 K8
K5 2°C compensation 5°C compensation
Switch No. Switch ON Switch OFF
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■Rotary Switch
■ You should display that how many indoor units are connected to the
outdoor unit. Refer to the table below, then turn the arrow to appropriate
position.
■Option Switch
0 or 1
2
3
4
5
6
7
8
One
Two
Three
Four
Five
Six
Seven
Eight
9
A
B
C
D
E
F
-
Nine
Ten
Eleven
Twelve
Thirteen
Fourteen
Fifteen
-
Switch No. Number of
indoor unit(s) Switch No. Number of
indoor unit(s)
RESETCHECK MODE DISPLAY
MODE
K1 K2 K3 K4
DIS 1
SEG 1 SEG 2 SEG 3 SEG 4
DIS 2
■KEY ■Display
2-3 Setting Up Option Switches
Rotary Switch
Key
Display
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Installation
Samsung Electronics8
K1
1
2
3
1
2
3
4
1
2
3
4
5
6
7
Adding refrigerant for heat pump models
Test operation for heat pump models
End
Adding refrigerant for cooling only models
Test operation for cooling only models
Pump Down for recovery of refrigerant
End
Reset
Discharge temperature of compressor
Temperature of outdoor heat exchanger
Outdoor temperature
Step of electronic expansion valve
(0 step : all closed, 480 step : all open)
Temperature of evaporator
Indoor temperature
Stopping view mode & display communication data
110 °C
38 °C
34 °C
120STEP
(12 x 10)
-2 °C
12 °C
22 °C
KEY Number of
press Item Example
Display Meaning
K2
K3
K4
Function
Number
of press times
1
2
3
4
✳ Use the K1 only for heat pump models.
K1
(Displayed on SEG 3, 4)
Adding refrigerant at
heating mode
Test operation at
heating mode
End
-
K2
(Displayed on SEG 3, 4)
Adding refrigerant at
cooling mode
Test operation at
cooling mode
Pump Down for recovery
of refrigerant
End
K3
(Displayed on SEG 3, 4)
Reset
-
-
-
K4
(Displayed on SEG 3, 4)
Displays data
-
-
-
■Summary of KEY functions
■Reading data indicated on the display
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3. Disassembly and Reassembly
3-1 Indoor Unit
Stop operation of the air conditioner and remove the power cord before repairing the unit.
No Parts Procedure Remark
1
2
Filter-pre
Blower & DUCT
1) Disassemble 2 screws of indication part
and then assemble the direction of
2 plate-handle places by use of screw
as shown in 2).
2) Turn the plate handle by hand when
removing the Filter-pre.
3) When pulling the Filter-pre handle,
the Filter-pre can be assembled.
✳Be sure to remove the cushion on the
marked part after initial installation.
(It cause the damage of noise).
1) After disassembling 9 places indicating
screws, separate Ass'y cover bottom.
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Disassembly and Reassembly
No Parts Procedure Remark
2) Disassemble 6 indicating screws.
3) Separate the sensor holder from the
Ass'y fan case.
4) Separate from Ass'y control in the
capacitor connection wire between the
motor-fan in and housing connector.
5) Separate the Ass'y blower and duct from
the set.
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Disassembly and Reassembly
No Parts Procedure Remark
3 Control In 1) After disassembling 1 indicating screw,
separate the cover-control.
2) Separate the motor-fan in and sensor
connector connected to PCB.
3) Disassemble 2 indicating screws.
(arrow mark)
4) Hold the Ass'y control In by hand to lift up
a little and then release the status of
hanging on the hanging slot.
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Disassembly and Reassembly
No Parts Procedure Remark
4
5
Drain pan
EVAP
1) Disassemble 4 indicating screws to
separate Ass'y drain pan. (2 screws
each at left and right side)
✳Work is possible when disassembling the
ass'y drain pan.
1) Disassemble 8 indicating screws. (4 each
at left and right side)
2) Disassemble 6 indicating screws.
3) Disassemble 5 indicating screws.
✳It is possible at the status of No.3 Ass'y
control In disassembly at the time.
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Disassembly and Reassembly
No Parts Procedure Remark
4) After disassembling 4 indicating screws.
5) Pull the cabinet-side RH, BH by hand to
disassemble.
6) Separate 4 indicating screws. (2 each at
left and right side)
7) Separate it from the set if the ass'y-evap
pull up.
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Disassembly and Reassembly
No Parts Procedure Remark
6Holder outlet ✳When connecting canvas to the discharge
side.
1) Disassemble 4 indicating screws.
(2 each at left and right side)
2) Disassemble 12 indicating screws.
(6 each at upper and lower side)
✳After connecting canvas to the
disassembled Ass'y holder outlet 2),
attach the Ass'y holder outlet to the
set in the reverse order.
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3-2 Outdoor Unit
No Parts Procedure Remark
1
2
Cabinet
Fan Motor
&
Propeller Fan
1) Turn off the unit and remove the power
cable.
2) Detach the top cover.
3) Detach the control box cover.
4) Unplug the ass'y cable.
5) Detach the cabi-side.
6) Detach the cabi-front.
✳When you assemble the parts, check if the
each parts and component electric box are
fixed firmly.
1) Detach the nut flange.
(Turn to the right to remove as it is a left
turned screw)
2) Disassemble the propeller fan.
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4. Refrigerating Cycle Diagram
Liquid Side
*Allowable pipe length : Max. 50m
*Allowable drop distance : Max. 30m
Gas Side
INDOOR UNIT OUTDOOR UNIT
Heat
Exchanger
(Evaporator)
Heat
Exchanger
(Condensor)
Muffler
Compressor High pressure switch
Accumulator
Cooling
Heating
Gas leak check point
3-Way Valve
Filter Filter
EEV
3-Way Valve
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1. Error of indoor unit: Displayed on
the indoor unit regardless of
operation
2. Error of outdoor unit: Displayed on
the indoor unit which is operating
Displayed on appropriate indoor unit
which is operating
Displayed on outdoor unit
Displayed on appropriate indoor unit
which is operating
Displayed on appropriate indoor unit
which is operating
1. No communication for 2 minutes between
indoor unit and outdoor unit
(communication error for more than
2 minutes)
2. Indoor unit receiving the communication
error from outdoor unit
3. Outdoor unit tracking 3 minute error
4. When sending the communication error from
outdoor unit the mismatching of the
communication numbers and installed
numbers after completion of tracking. (com-
munication error for more than 2 minutes)
Error of outdoor temperature sensor
Error of COND sensor
Error of DISCHARGE sensor
(OPEN/SHORT)
Error of heat exchanger sensor in indoor
unit(OPEN/SHORT)
Error of temperature sensor in indoor unit
(OPEN/SHORT)
Power reset
- If you turn off the air conditioner when the LED is flickering, the LED is also turned off. : On : Flickering : Off
-
If you re-operate the air conditioner, it operates normally at first, then detect an error again.
Error of indoor unit: Displayed on the
indoor unit regardless of operation
1. Communication error between indoors
(Communication error for more than
2 minutes)
2. Slave of indoor unit tracking error
Operating
Indicators
Abnormal conditions Blue Red
Concealed Type
Standard Type
■Detection of errors
●If an error occurs during the operation, an LED flickers and the operation is stopped except the LED.
● If you re-operate the air conditioner, it operates normally at first, then detect an error again.
5-1 LED Display on the receiver & display unit
■LED Display
5. Troubleshooting
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Troubleshooting
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Displayed on appropriate indoor
unit which is operating
Displayed on outdoor unit
1. 2nd detection of high temperature COND
2. 2nd detection of high temperature
DISCHARGE
3. Error of reverse phase
- If you turn off the air conditioner when the LED is flickering, the LED is also turned off. : On : Flickering : Off
- If you re-operate the air conditioner, it operates normally at first, then detect an error again.
Error of float switch
Error of setting option switches for optional
accessories
EEPROM error
EEPROM option error
Operating
Indicators
Abnormal conditions Blue Red
Concealed Type
Standard Type
■LED Display(cont.)
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Error about protection
control of outdoor unit
Errors about outdoor unit
sensor (OPEN/SHORT)
Detection during the
operation of indoor unit
(Sensing and sending errors
into the communication data)
Communication and
indoor unit errors
Self-diagnosis of indoor and
outdoor unit (x:indoor unit
address)
Displays of operating status
x
x
Flicker
Flicker
K1, K2, K3, K4,
K5 Flicker
x
x
High temperature of Discharge (Protection control)
High temperature of outdoor heat exchanger (Protection control)
COMP DOWN to protect being frozen
Error of momentary power failure (disappears when the unit is Off/On)
Error of OUT TEMP sensor (OPEN/SHORT)
Error of temperature sensor in outdoor heat exchanger (OPEN/SHORT)
Error of Discharge TEMP sensor (OPEN/SHORT)
System Down caused by communication error after completion of tracking
Mismatching of the indoor unit numbers set with those
communicated after completion of tracking
Error of float switch in indoor unit
Error of setting option switches for optional accessories
OPEN/SHORT error of room sensor in indoor unit
OPEN/SHORT error of eva in sensor in indoor unit
EEPROM option error
Error of fan starting
Open error of electronic expansion valve in outdoor unit
(Detected once or more times)
Close error of electronic expansion valve in outdoor unit
(Detected once or more times)
Below -5°C when cooling (Outdoor temperature)
Over 30°C when heating (Outdoor temperature)
The order of priority : E1 → E2 → E4 → E5 → P0 → P1 → P5 → P6 → t1 → t2 → t3 → tu → to → G4 → G5 → E3 → qx → rx → vx →
K1, K2, K3, K4, K5
The order of priority : - In case that the same error displays from multi-indoor units, the one having the faster address has the priority.
Remark
Display Explanation
5-2 Outdoor Unit
If an error occurs during the operation, it is displayed on the outdoor unit PCB.
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