Conductos Gama SMART DLF-YBDE

Conductos Gama SMART DLF-YBDE
ECO DESIGN 2014
DLF DC Inverter Series
Indoor Units
Outdoor Units
DLF 18 DCI
YBDE018-H11
DLF 24 DCI
YBDE024-H11
REFRIGERANT
R410A
HEAT PUMP
SM DLF 1-A.1 GB
– 201
LIST OF EFFECTIVE PAGES
LIST OF EFFECTIVE PAGES
Note: Changes in the pages are indicated by a “Revision#” in the footer of each effected page
(when none indicates no changes in the relevant page). All pages in the following list represent
effected/ non effected pages divided by chapters.
Dates of issue for original and changed pages are:
Original ....... 0 ........ June 2013
Total number of pages in this publication is 10 consisting of the following:
Page
No.
Revision
No. #
Page
No.
Revision
No. #
Page
No.
Revision
No. #
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4-1 - 4-2................1
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6-1 - 6-2 ................1
7-1 - 7-2 ................1
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12-1 -12-41 ...........1
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14-1 - 14-10 ...........1
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Zero in this column indicates an original page.
*
** Photos are not contractual.
A
SM DLF 1-A.1 GB
TABLE OF CONTENTS
Table of Contents
1.
INTRODUCTION ...................................................................................................1-1
2.
PRODUCT DATA SHEET ......................................................................................2-1
3.
RATING CONDITIONS ..........................................................................................3-1
4.
OUTLINE DIMENSIONS .......................................................................................4-1
5.
PERFORMANCE DATA & PRESSURE CURVES ................................................5-1
6.
AIRFLOW CURVES ..............................................................................................6-1
7.
SOUND LEVEL CHARACTERISTICS ..................................................................7-1
8.
ELECTRICAL DATA ..............................................................................................8-1
9.
WIRING DIAGRAMS .............................................................................................9-1
10. REFRIGERATION DIAGRAMS .............................................................................10-1
11.
TUBING CONNECTIONS......................................................................................11-1
12. CONTROL SYSTEM .............................................................................................12-1
13. TROUBLESHOOTING ..........................................................................................13-1
14. EXPLODED VIEWS AND SPARE PARTS LISTS .................................................14-1
15. OPTIONAL ACCESSORIES .................................................................................15-1
16. APPENDIX A .........................................................................................................16-1
SM DLF 1-A.1 GB
i
INTRODUCTION
1.
INTRODUCTION
1.1
General
The new DLF DC INVERTER split unit range comprises the following RC (heat pump)
models:
F
F
Remote control compatibility
The units are compatible with remote controls RC3, RC4, RC7, RC8
Inverter description
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nominal capacity range unit.
It made possible due to the ability of inverters to reach a much higher capacity level
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Sine wave DC Compressor drive.
DC-BL-SL (DC Brush-Less Sensor less) Inverter Compressor
.
DC-BL Inverter Outdoor and Indoor Fan.
Fuzzy Logic Adaptive Control.
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Low noise levels.
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Networking connectivity.
Dry contact inputs:
) Forced Standby.
) Night mode (for silent operation).
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Dry contact output:
) Alarm
) Base Heater
) Crank Case Heater
HMI Display consists of 7-segments shows system diagnostics and setup.
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Q!<+;x& SM DLF 1-A.1 GB
1-1
INTRODUCTION
1.3
lndoor Unit
DLF
The DLF DCI indoor unit is a low silhouette ducted unit and low noise level (up to 29
DBA), can be easily fitted to many type of residential and commercials applications.
• Low silhouette units 200mm height.
• High technology plastic fan and fan housing.
• Drain pool at bottom of unit with internal downward slope.
• Over-low switch, stops compressor operation in case of a blocked drainage.
• Integrated water pump
• Hydrophilic coated aluminum fins coil.
• DC fan motor with maximum fan speed flexibility.
• Easy installation and service access.
(1) Horizontal/Vertical installation build in.
(2) 2 options of return air location, on back of the unit or bellow the unit.
• lnfrared remote control with liquid display unit (LCD).
• Advanced electronic control box assembly with 1 meter cable to allow installation at
a more accessible area.
1.4
Filtration
• The unit is equipped with pre filters.
• The air filter can be located in the back side or in the bottom of the unit for easy
access.
1.5
Control
The micro processor indoor controller, and an infrared remote control, supplied as
standard, provides complete operating function and programming.
For further details, please refer to the Operation Manual, Appendix A.
1.6
Outdoor Unit
The DCI outdoor units can be installed as floor or wall mounted units by using a wallsupporting bracket. The metal sheets are protected by anti- corrosion paint work
allowing long life resistance. All outdoor units are pre-charged. For further information,
please refer to the Product Data Sheet, Chapter 2.
• Compressor mounted in a soundproofed compartment.
• lmproved 3-blades axial fans for noise reduction.
• Outdoor coil with hydrophilic fins optimized for operation with R410A refrigerant.
• Fan grill air outlet.
• Service valves “flare” type connection.
• Service ports for high/low pressure measurement.
• Interconnecting wiring terminal blocks.
1-2
SM DLF 1-A.1 GB
INTRODUCTION
1.7
Inbox Documentation
Each unit includes its own installation and operation manuals.
1.8
Matching Table
OUTDOOR UNITS
INDOOR UNITS
OUTDOOR
W{|
DLF18
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DLF24
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SM DLF 1-A.1 GB
CONTENT
†
1-3
PRODUCT DATA SHEET
2.
PRODUCT DATA SHEET
2.1
DLF 18 DCI
Model Indoor Unit
Model Outdoor Unit
Installation Method
Units
Pdesign
SEER / SCOP (1)
Energy efficiency class
Annual energy consumption
Tbiv
Tol
Capacity Range (1) (min÷max)
Power supply
Circuit breaker rating
Fan type & quantity
Fan speeds
H/M/L
Air flow (2)
H/M/L
External static pressure
Min-Max
Sound power level (3)
H/M/L
Sound pressure level (4)
H/M/L
Moisture removal
Condensate drain tube I.D
Dimensions
WxHxD
Weight
Package dimensions
WxHxD
Packaged weight
Units per pallet
Stacking height
Refrigerant control
Compressor type, model
Fan type & quantity
Fan speeds
Air flow
Max.
Sound power level
Nom.
Sound pressure level
Nom.
Dimensions
WxHxD
Weight
Package dimensions
WxHxD
Packaged weight
Units per pallet
Stacking height
Refrigerant type
Refrigerant charge (standard connecting tubing
length)
Additional charge per 1 meter
Liquid line
Suction line
Connections between
units
Max. tubing length
Max. height difference
Operation control type
Heating elements
Others
kW
W/W
OUTDOOR
INDOOR
Characteristics
kWh
o
C
o
C
kW
V/Ph/Hz
A
RPM
m3/hr
Pa
dB(A)
dB(A)
l/hr
mm
mm
kg
mm
kg
units
units
RPM
m3/hr
dB(A)
dB(A)
mm
kg
mm
kg
Units
units
AWSI-DLF018 –N11
AWAU-YBDE018-H11
DUCTED
Heating
Cooling
Average
Warmer
5.0
4.8
4.8
3.9
5.4
4.3
A
A
A+
808
2549
1488
N/A
-3
6
N/A
-15
-15
1.5÷5.8
1.3÷6.8
220-240V/Single/50Hz
20
Centrifugal x 2
1110/980/860
710/600/540
0-40
54/51/48
35/32/29
1.8
19
750x630x200
21
890x710x243
23
14
7
EEV
Twin Rotary DC Inverter
Axial x 1
200 – 750 (continuous)
2500
65
53
900x700x340
56
985x730x435
58.5
6 units per pallet
2 levels
R410A
kg(7.5m)
1.55
gr / 1m
In.(mm)
In.(mm)
m.
m.
7.5m < 0gr < 15m < 35gr per 1m < 30m
1/4"(6.35)
1/2"(12.7)
30
15
Remote control
kW
(1) Rating conditions in accordance with EN14825 and EN14511 (for ducted units).
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1.4 meter distance from unit.
SM DLF 1-A.1 GB
2-1
PRODUCT DATA SHEET
2.2
DLF 24 DCI
Model Indoor Unit
Model Outdoor Unit
Installation Method
Units
Pdesign
SEER / SCOP
Energy efficiency class
Annual energy consumption
Tbiv
Tol
Capacity Range (1) (min÷max)
Power supply
Circuit breaker rating
Fan type & quantity
Fan speeds
H/M/L
Air flow (2)
H/M/L
External static pressure
Min-Max
Sound power level (3)
H/M/L
Sound pressure level (4)
H/M/L
Moisture removal
Condensate drain tube I.D
Dimensions
WxHxD
Weight
Package dimensions
WxHxD
Packaged weight
Units per pallet
Stacking height
Refrigerant control
Compressor type, model
Fan type & quantity
Fan speeds
Air flow
Max.
Sound power level
Nom.
Sound pressure level
Nom.
Dimensions
WxHxD
Weight
Package dimensions
WxHxD
Packaged weight
Units per pallet
Stacking height
Refrigerant type
Refrigerant charge (standard connecting tubing length)
Additional charge per 1 meter
Liquid line
Suction line
Connections between units
Max.tubing length
Max.height difference
Operation control type
Heating elements
Others
kW
W/W
OUTDOOR
INDOOR
Characteristics
kWh
o
C
o
C
kW
V/Ph/Hz
A
RPM
m3/hr
Pa
dB(A)
dB(A)
l/hr
mm
mm
kg
mm
kg
units
units
RPM
m3/hr
dB(A)
dB(A)
mm
kg
mm
kg
Units
units
kg(7.5m)
gr / 1m
In.(mm)
In.(mm)
m.
m.
kW
AWSI-DLF024 –N11
AWAU-YBDE024-H11
DUCTED
Heating
Cooling
Average
Warmer
7.0
7.5
7.5
5.6
4.7
3.8
A
A++
A+
1099
4019
1920
N/A
-3
6
N/A
-15
-15
1.5÷7.5
1.5÷8.8
220-240V/Single/50Hz
20
Centrifugal x 3
1200/1050/980
1150/950/900
0-40
63/59/56
39/35/32
2.7
19
1050x630x200
25
1190x710x243
28
14
7
EEV
Twin Rotary DC Inverter
Axial x 1
300 – 820 (continuous)
2750
67
55
900x700x340
61.0
985x730x435
63.5
6
2 levels
R410A
2.3
7.5m < 0gr < 15m < 35gr per 1m < 30m
3/8"(9.53)
5/8"(15.88)
30
15
Remote control
(1) Rating conditions in accordance with EN14825 and EN14511 (for ducted units).
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1.4 meter distance from unit.
2-2
SM DLF 1-A.1 GB
RATING CONDITIONS
3.
RATING CONDITIONS
Standard conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and
EN 14511.
Cooling:
Indoor:
27oC DB 19oC WB
Outdoor: 35 oC DB
Heating:
Indoor:
20oC DB
Outdoor: 7oC DB 6oC WB
3.1
Operating Limits
Indoor
Cooling
Heating
Voltage
SM DLF 1-A.1 GB
Upper limit
Lower limit
Upper limit
Lower limit
1PH
CONTENT
Outdoor
32oC DB 23oC WB 46oC DB
21oC DB 15oC WB -10oC DB
24oC DB 18oC WB
27oC DB
-15oC DB -16oC WB
10oC DB
198 – 264V
3-1
OUTLINE DIMENSIONS
OUTLINE DIMENSIONS
4.1
Indoor Unit: DLF 18, 24
B
C
A
59
4.
565
21
160
200
59
Nominal Capacity
5.0 kW
7.0 kW
SM DLF 1-A.1 GB
27
629 (640 With air filter)
A
B
C
750 696 790
1050 996 1090
CONTENT
4-1
OUTLINE DIMENSIONS
Outdoor Unit: YBDE 018/024
4.2
4-2
SM DLF 1-A.1 GB
PERFORMANCE DATA & PRESSURE CURVES
5.
PERFORMANCE DATA & PRESSURE CURVES
5.1
DLF 18 DCI - H11
5.1.1
Cooling Capacity (kW)
ID COIL ENTERING AIR DB/WB TEMPERATURE [ oC]
OD COIL ENTERING
AIR DB
TEMPERATURE [oC]
-10 - 20
(protection range)
25
30
35
40
46
DATA
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
22/15
24/17
27/19
29/21
32/23
4.83
3.94
0.97
4.60
3.84
1.09
4.37
3.74
1.20
4.14
3.64
1.32
3.86
3.52
1.45
80 - 110 % of nominal
80 - 105 % of nominal
25 - 50 % of nominal
5.15
5.47
5.78
4.02
4.10
4.18
0.99
1.01
1.03
4.92
5.23
5.55
3.92
4.00
4.08
1.11
1.13
1.14
4.68
5.00
5.32
3.82
3.90
3.98
1.22
1.24
1.26
4.45
4.77
5.08
3.72
3.80
3.88
1.34
1.35
1.37
4.17
4.49
4.80
3.60
3.68
3.76
1.47
1.49
1.51
6.10
4.26
1.05
5.86
4.16
1.16
5.63
4.06
1.28
5.40
3.96
1.39
5.12
3.84
1.53
LEGEND
TC
SC
PI
WB
DB
ID
OD
–
–
–
–
–
–
–
SM DLF 1-A.1 GB
Total Cooling Capacity, kW
Sensible Capacity, kW
Power Input, kW
Wet Bulb Temp., (oC)
Dry Bulb Temp., (oC)
Indoor
Outdoor
CONTENT
5-1
PERFORMANCE DATA & PRESSURE CURVES
5.1.2
Heating
ID COIL ENTERING AIR DB
OD COIL ENTERING
AIR DB/WB
TEMPERATURE [°C]
-15/-16
-10/-12
-7/-8
-1/-2
2/1
7/6
10/9
15/12
15-24
(Protection Range)
DATA
15
20
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
3.06
0.79
3.40
0.95
3.66
1.08
3.79
1.14
3.88
1.18
5.01
1.24
5.29
1.31
5.57
1.39
25
2.84
2.63
0.87
0.95
3.19
2.97
1.04
1.12
3.45
3.23
1.16
1.24
3.58
3.36
1.22
1.30
3.66
3.45
1.26
1.34
4.80
4.59
1.32
1.40
5.08
4.86
1.39
1.47
5.35
5.14
1.47
1.55
85 - 105 % of nominal
80 - 120 % of nominal
LEGEND
TH
PI
WB
DB
ID
OD
5-2
–
–
–
–
–
–
Total Heating Capacity, kW
Power Input, kW
Wet Bulb Temp., (oC)
Dry Bulb Temp., (oC)
Indoor
Outdoor
CONTENT
SM DLF 1-A.1 GB
PERFORMANCE DATA & PRESSURE CURVES
5.2
DLF 24 DCI - H11
5.2.1
Cooling Capacity (kW)
ID COIL ENTERING AIR DB/WB TEMPERATURE [ oC]
OD COIL ENTERING
AIR DB
TEMPERATURE [oC]
-10 - 20
(protection range)
25
30
35
40
46
DATA
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
22/15
24/17
27/19
29/21
32/23
6.77
5.71
1.34
6.44
5.56
1.49
6.12
5.42
1.65
5.79
5.27
1.81
5.40
5.10
1.99
80 - 110 % of nominal
80 - 105 % of nominal
25 - 50 % of nominal
7.21
7.65
8.09
5.82
5.94
6.05
1.36
1.39
1.41
6.88
7.33
7.77
5.68
5.79
5.91
1.52
1.54
1.57
6.56
7.00
7.44
5.53
5.65
5.77
1.67
1.70
1.73
6.23
6.67
7.12
5.39
5.51
5.62
1.83
1.86
1.88
5.84
6.28
6.73
5.22
5.33
5.45
2.02
2.04
2.07
8.54
6.17
1.44
8.21
6.03
1.59
7.88
5.88
1.75
7.56
5.74
1.91
7.17
5.57
2.10
LEGEND
TC
SC
PI
WB
DB
ID
OD
–
–
–
–
–
–
–
SM DLF 1-A.1 GB
Total Cooling Capacity, kW
Sensible Capacity, kW
Power Input, kW
Wet Bulb Temp., (oC)
Dry Bulb Temp., (oC)
Indoor
Outdoor
CONTENT
5-3
PERFORMANCE DATA & PRESSURE CURVES
5.2.2
Heating
ID COIL ENTERING AIR DB
TEMPERATURE [°C]
OD COIL
ENTERIN
G AIR
DB/WB
TEMPER
ATURE
[°C]
-15/-16
-10/-12
-7/-8
-1/-2
2/1
7/6
10/9
15/12
15-24
(Protectio
n Range)
DATA
15
20
25
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
4.77
4.44
4.11
1.06
1.16
1.27
5.31
4.98
4.65
1.27
1.38
1.49
5.72
5.39
5.05
1.44
1.54
1.65
5.92
5.59
5.25
1.52
1.62
1.73
6.06
5.72
5.39
1.57
1.68
1.79
7.83
7.50
7.17
1.65
1.76
1.87
8.27
7.93
7.60
1.75
1.86
1.97
8.70
8.36
8.03
1.85
1.96
2.06
85 - 105 % of nominal
PI
80 - 120 % of nominal
LEGEND
TH
PI
WB
DB
ID
OD
5-4
–
–
–
–
–
–
Total Heating Capacity, kW
Power Input, kW
Wet Bulb Temp., (oC)
Dry Bulb Temp., (oC)
Indoor
Outdoor
CONTENT
SM DLF 1-A.1 GB
PERFORMANCE DATA & PRESSURE CURVES
5.3
Capacity Correction Factor for Tubing Length
5.3.1
Cooling
1.05
Capacity Ratio
1.00
0.95
0.90
0.85
0.80
0.75
5
10
15
20
25
30
35
40
45
50
55
60
65
70
50
55
60
65
70
Tubing Lenght [m]
5.3.2
Heating
1.05
Capacity Ratio
1.00
0.95
0.90
0.85
0.80
0.75
5
10
15
20
25
30
35
40
45
Tubing Lenght [m]
SM DLF 1-A.1 GB
5-5
PERFORMANCE DATA & PRESSURE CURVES
5.4
Pressure Correction Factor for Tubing Length
5.4.1
Cooling
1.02
1.02
1.00
1.00
Cooling Discharge Pressure
0.98
0.98
0.96
0.96
0.94
0.94
Cooling Suction Pressure
0.92
0.92
0.90
0.90
0.88
0.88
0.86
0.86
5
10
15
20
25
30
35
40
45
50
55
60
65
Discharge Pressure Ratio
Suction Pressure Ratio
Pressure vs Tubing Lenght (COOLING)
70
Total Tubing Length [m]
5.4.2
Heating
Pressure vs Tubing Lenght (HEATING)
1.02
1.01
1.01
Heating Suction Pressure
1.00
1.00
0.99
0.99
0.98
0.98
0.97
0.97
0.96
0.96
Heating Discharge Pressure
0.95
0.95
0.94
0.94
5
10
15
20
25
30
35
40
45
50
55
60
65
Discharge Pressure Ratio
Suction Pressure Ratio
1.02
70
Total Tubing Lengtht [m]
5-6
SM DLF 1-A.1 GB
PERFORMANCE DATA & PRESSURE CURVES
Capacity Correction Factors (Cooling)
5.5
1.4
1.3
1.2
Capacity Factor
1.1
1.0
0.9
0.8
0.7
0.6
0.5
20
5.6
25
30
35
Outdoor Temperature DB [deg C]
40
45
Capacity Correction Factors (Heating)
1.2
1.1
Capacity Factor
1.0
0.9
0.8
0.7
0.6
0.5
-20
-15
SM DLF 1-A.1 GB
-10
-5
0
5
Outdoor WB Temperature [deg C]
10
15
5-7
AIRFLOW CURVES
6.
AIRFLOW CURVES
6.1
Model: DLF 18 DCI
5KW AIR FLOW CHART
48
10PA
20Pa
44
40PA
40
36
High
32
Med
ESP
28
24
Low
20
SHigh
16
12
SMed
8
4
Slow
0
0
50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900
M³ /HR
SM DLF 1-A.1 GB
CONTENT
6-1
AIRFLOW CURVES
Model: DLF 24 DCI
6.2
7.0KW AIR FLOW CHART
60
56
52
48
10PA
44
20PA
40
40PA
36
ESP
High
32
28
Med
24
Low
20
SHigh
16
12
SMed
8
Slow
4
0
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000 1050 1100 1150 1200 1250 1300
M³ /HR
6.3
DLF UNITS RANGE AIR FLOW CORRECTION FACTORS
(at nominal rating conditions — Test mode).
Cooling
Heating
TC
SC
PI
PI
TC
60%
0.88
0.78
0.95
1.07
0.90
Air Flow Rate [% of nominal]
70%
80%
90%
0.91
0.94
0.97
0.84
0.89
0.95
0.97
0.98
0.99
1.05
1.03
1.02
0.92
0.95
0.97
100%
1
1
1
1
1
* Permissible Air flow Rate - according to model Air Flow Curves
SM DLF 1-A.1 GB
CONTENT
6-2
SOUND LEVEL CHARACTERISTICS
7.
SOUND LEVEL CHARACTERISTICS
7.1
Sound Pressure Level
Figure 1
7.2
Soud Pressure Level Spectrum (Measured as Figure 1)
DLF 24
NC-70
NC-60
NC-50
NC-40
NC-30
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-20
NC-10
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
DLF 18
NC-60
NC-50
NC-40
NC-30
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-20
BAND CENTER FREQUENCIES, Hz
BAND CENTER FREQUENCIES, Hz
FAN SPEED
NC-70
LINE
HI
ME
LO
SM DLF 1-A.1 GB
CONTENT
7-1
SOUND LEVEL CHARACTERISTICS
7.3
Outdoor Units
1.0 m
Center
for Unit
Figure 2
7.4
Sound Pressure Level Spectrum (Measured as Figure 2)
YBDE 018/024 - H11 Cooling
YBDE 018/024 - H11 Heating
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SM DLF 1-A.1 GB
J>
<=
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7-2
ELECTRICAL DATA
8.
ELECTRICAL DATA
8.1
Single Phase Units
DLF 18
DLF 24
1 PH ,220-240VAC ,50HZ
Indoor or Outdoor
Outdoor
15A
15A
45 A
15 A
15A
20 A
MODEL
Power Supply
Connected to
Maximum Current
Inrush Current (c)
Starting Current (d)
Circuit Breaker
(a)
Power supply can be connected in both ways:
To outdoor unit to supply both outdoor and indoor unit.
To outdoor unit and to Indoor unit separately.
(b) Communication wires must be separated from the power wires and should be shielded type, earth connected at
both ends.
(c) Inrush current is the current when power is up (charging the DC capacitors at outdoor unit controller).
(d) Starting current is the current peak when starting the compressor.
NOTE:
Power wiring cord should comply with local lows and electrical regulations requirements.
SM DLF 1-A.1 GB
CONTENT
8-1
WIRING DIAGRAMS
9.
WIRING DIAGRAMS
9.1
Indoor Unit: DLF 18/24 DCI
Outdoor Unit: YBDE 18/24 - H11
WHT
P202
C
AC
OFAN
YEL/GRN
HPS
1
2
2
P104
1
2
P604
P106
P105
P109
P108
Outdoor Unit Controller
P602
1 2 3
P102
P101
L
N
P107
DMSMP
P601
1
2
3
HST
OCT
1
1
CTT
OAT
OMT
1
3
RED
BLUE
BH
Optional
1
P201
FUSE
20A
REVERSE
VALVE
BLUE
WHTIE
FERRITE
BLACK
BROWN
RED
U
V W
P503
P501
P502
P103
CAP BRN
CHOCK
COIL
COMP
BLACK
9.2
2
2
1
2
3
4
CN802
CN801
ON
DIP
FLASH
P805
6 5 4 3 2 1
MODEL
1 2 3 4 SETTING
4
2
P802
P801
P803
P804
EEV
M2L
FERRITE
BROWN
BLUE
RED
ON
DIP
YEL/GRN
1
2
3 4
1
2
3
4
ODU Model
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
OU7 DCI 50
OU7 DCI 72
Controller Display - General description
C
N
The display uses 3-seven segments. The default presentation will be alternation among:
L
Mode
TO AC MAINS
(FOR POWER
SOURCE
FROM ODU)
TO INDOOR UNIT
Number of detected IDUs
Fault Code
The navigation through the menu can be performed by RC8
(press both "SPT-" and "SPT+" more then for 5 seconds to enter or
exit technician mode)
REMOTE
FUNCTION CONTROL
DISPLAY
FAN
SELECT
SPT DOWN
POWER
UP
SPT +
LED
I.R RECEIVER
ESCAPE
OPER/STBY
- - - - - - - OPTIONAL
426708 Rev. 01
SM DLF 1-A.1 GB
9-1
WIRING DIAGRAMS
9.3
1PH UNITS POWER SUPPLY TO INDOOR
(DLF 18)
NC
(5.0 kW ‫)יחידת‬
C N L
1.
2.
3.
4.
5.
6.
7.
8.
Indoor Unit
Power Supply Cable
Outdoor Unit
Interconnecting Cable (4x2.5mm2)**
Wireless Remote Control
Display Unit
Display Connector
Power Breaker (*by installer)
* The power breaker must be of type that disconnects all poles with 3 mm contact opening.
** Use shielded cable and connect the shield to earth point
SM DLF 1-A.1 GB
9-2
WIRING DIAGRAMS
9.4
1PH UNITS POWER SUPPLY TO OUTDOOR
NC
(DLF 18,24)
9
C N L
1.
2.
3.
4.
5.
6.
7.
8.
9.
Indoor Unit
Power Supply Cable
Main Power Breaker
Outdoor Unit
Interconnecting Cable (4x2.5mm2)**
Wireless Remote Control
Display Unit
Display Connector
Power Breaker (*by installer)
* The power breaker must be of type that disconnects all poles with 3 mm contact opening.
** Use shielded cable and connect the shield to earth point
9-3
SM DLF 1-A.1 GB
REFRIGERATION DIAGRAMS
10.
REFRIGERATION DIAGRAMS
10.1
Heat Pump Models
SV
LPS
(Optional) (Optional)
P
Oil cappilary tube
2.5mmx0.6mmx1000mm
CTT
Line
accumulator
3.0
Compressor
Oil
separator (Optional)
P
HPS (Optional)
ICT
Gas valve
SV
4 Way
valve
Flared
Connection
RAT
EEV
Filter
OMT
OAT
Outdoor heat
exchanger
Liquid
valve
OCT
OUTDOOR UNIT
INDOOR UNIT
Refrigerant flow (Cooling)
Refrigerant flow (Heating)
SM DLF 1-A.1GB
10-1
TUBING CONNECTIONS
11.
TUBING CONNECTIONS
TUBE (Inch)
¼”
½”
¾”
15-18
13-20
11-13
40-45
13-20
11-13
60-65
18-25
11-13
70-75
18-25
11-13
80-85
40-50
11-13
TORQUE (Nm)
Flare Nuts
Valve Cap
Service Port Cap
1.
2.
3.
4.
5.
6.
7.
8.
SM DLF 1-A.1 GB
Valve Protection Cap-end
Refrigerant Valve Port (use Allen wrench to open/close)
Valve Protection Cap
Refrigerant Valve
Service Port Cap
Flare Nut
Unit Back Side
Copper Tube
11-1
CONTROL SYSTEM
12.
CONTROL SYSTEM
12.1
Abbreviations
Abbreviation
A/C
BMS
CCR
CCH
COMP
CTT
DCI
DMSMP
E²PROM, EEP
EEV
HE
HMI
HPS
HST
Hz
ICT
IDU
IFAN
LPS
M2L
MCU
NA
OAT
OCT
OMT
ODU
ODUC
OFAN
PD
PFC
RAC
RAT
R/C
RC
RGT
RLT
RPS
RV
SB,STBY
SH
SPT
S/W
TBD
TEMP
TMR
TPT
SM DLF 1-A.1 GB
€
Air Conditioner
Building Management System
Compressor Current
Crankcase Heater
Compressor
Compressor Top Temperature sensor
DC Inverter
Dummy Multi Split multi Pipe – Control board
Erase Enable Programmable Read Only Memory
Electronic Expansion Valve
Heating Element
Human Machine Interface
High Pressure Switch
Heat Sink Temperature sensor
Hertz (1/sec) – electrical frequency
Indoor Coil Temperature (RT2) sensor
Indoor Unit
Indoor Fan
Low Pressure Switch
Mega Tool (Monitoring SW)
Micro Controller Unit
Not Applicable
Outdoor Air Temperature sensor
ODU Coil Temperature sensor
Outdoor middle coil temperature sensor
Outdoor Unit
Outdoor Unit Control board
Outdoor Fan
Presence Detector
Power Factor Corrector
Residential A/C
Return (Room) Air Temperature sensor
Remote Control
Reverse Cycle (Heat Pump)
Return Gas Temperature sensor
Return Liquid Temperature sensor
Rounds per second (mechanical speed)
Reverse Valve
Stand By
Super-Heat
Set Point Temperature (In R/C)
Software
^\
Temperature
Timer
Technician peripherial Test
12-1
CONTROL SYSTEM
12.2
Product Overview
12.2.1
Block Diagram
Compressor
Driver
Line Filter
230VAC
or
400VAC
Inrush
Control
M
Speed
HST
AC Current
DC Current
Fault codes
Driver
Control
M
ODU Controller
OFAN
Control
IFAN
Control
M
Inputs
R/C
RAT
ICT
Overflow
Display
IDU
Communication
IDU Controller
Dry
contacts
RC
RCW
PBMS
PD
Temp.
Inputs
230V
Outputs
OAT
CTT
OMT
OCT
RV
BH
CCH
EEV
Output
EEV
OFAN
Control
M
Dry
contacts
SB
Night
Power Sheding
Alarm
HPS
LPS
Power Lines
Low Voltage
12-2
SM DLF 1-A.1 GB
CONTROL SYSTEM
12.2.2
Controller
overview
12.2.2.1 Main Controller Indoor Unit DLF 18,24
SM DLF 1-A.1 GB
12-3
CONTROL SYSTEM
12.2.2.3 Main Controller Outdoor Unit YBDE018/024
12.2.2.4 Main Controller Outdoor Unit YBDE030
12-4
SM DLF 1-A.1 GB
CONTROL SYSTEM
12.2.2.5 Display Board
Display
Display Board PCB
Legend
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Name Plate
Cooling LED
Heating LED
Push Button (Mode)
Timer LED
STBY LED
Operation LED
IR Receiver
Buzzer
Display Port Connection
12.2.2.6 New Display Board
Legend
1.
2.
3.
4.
5.
6.
7.
Mode Button
Stand-By Led
Timer led
Filter Led
Cool Mode Led
Heat mode Led
IR Reciever
1
12-=
2
3
4
5
6
7
SM DLF 1-A.1 GB
CONTROL SYSTEM
12.2.3
12.2.3.1
Control Features
Compressor
DC brush less and sensor less motor inverter driven compressor.
12.2.3.2
Compressor Drive
DC inverter module to drive compressor.
12.2.3.3
Outdoor Fan
DC brush less motor(s) drive the outdoor unit fan(s).
12.2.3.4
RV
K
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[email protected]!
heating.
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"
12.2.3.5
EEV
{
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12.2.3.6
HMI
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12.2.3.7
Dry Contacts
Dry contacts are used to interface the system with an external building management system
(BMS).
12.2.3.7.1 ODU Dry Contacts
x Night q
"
! ! ! % outdoor unit fan motor(s) and compressor speed will be reduced in order to reduce the
system noise level.
x SB input. System will be turned to Stand-by when the contact is closed.
x Power Shedding input. Limits the maximum power consumption when closed.
x Alarm output indicates a failure in the system.
Alarm output will be activated when an ODU Faults/Protections occure. Alarm output will be
OFF when the Fault/Protection is cleared.
12.2.3.7.2 IDU Dry Contacts
x Presence detector input / clock.
12.2.3.8
Temperature Sensors
Action
Compressor Speed Cool/Dry
Compressor Speed Heat
OFAN Speed Cool
OFAN Speed Heat
EEV Cool
EEV Heat
Deicing
Base Heater
Cranck case Heater
Indoor load (NLOAD)
IFAN Speed (Cool)
IFAN Speed (Heat)
Heating Element (Indoor)
CTT
P
P
P
+
+
+
OAT
OCT
OMT
HST
P
P
P
+
+
+
P
P
P
P
+(Multi)
+
+
+
+
+
+
+
+
+
RGT
RLT
+(Multi)
+(Multi)
ICT
RAT
P
P
+
+
+
+
+
+
+
+
P – Sensor is acting only for protection
+ - Sensor is active part of the control.
SM DLF 1-A.1 GB
12-F
+
+
+
CONTROL SYSTEM
12.2.3.9
Base Heater
Heating element designed to melt any ice that is accumulated on the outdoor unit base during low
heating operation.
The base heater will be working only when RV is “ON” according to the following graph:
Base
Heater
OFF
ON
0
2
OAT
When OAT is faulty the base heater will be “ON” continuously in HEAT mode.
12.2.3.10
Cranckcase Heater
Heating element designed to heatup the compressor oil cranck case during low outdoor ambient
temeratures.
The crank case heater operates only when compressor is off and according to OAT and CTT as following:
x '
@W[^@<&^^
@%W[^!
x In case of CTT failure - Coil heating is disabled.
12-
SM DLF 1-A.1 GB
CONTROL SYSTEM
12.3
General Operating Rules
12.3.1
Power up Sequence
After Power up A/C must perform some initialization procedures.
x
Thermistors short/disconnect.
x
Compressor Driver communication connected and error codes if any.
x
Fans connected – check feedback.
x
EEPROM power up parameters uploads.
x
EEV initialization – zero process.
x
ODU-IDU-DMSMP communication check.
SM DLF 1-A.1 GB
12-J
CONTROL SYSTEM
12.3.2
Communication with Indoor Unit
%##!€
12.3.2.1.1 ‘Bad Communication’ fault
The system keeps a balance of a good/bad communication packet ratio. When the ratio becomes high the system
enters ‘Bad Communication’ fault. The system recovers from that fault when the ratio becomes small again.
Æ\&Ç@%
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12.3.2.1.2 ‘No Communication’ fault
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compressor to off.
The system will recover from ‘No Communication’ fault when counter is below 10 and legal massage is received.
+ 
!
%
%
the ODU unit will be forced to Idle mode.
} 
%
IDUs messages
All IDUs Loose comm.
All IDUs Loose comm.
Does DMSMP
Message exist?
No
Yes
ODU report ‘nocommunication
Yes
No
Some IDUs loose comm.
Yes
No
ODU force to Idle
Yes
Yes
No
The
IDU
channel
Lost
inactive channel.
"#%€
This test is continuously performed while the system is on:
12.3.3.1
Communication Channel Auto Detection (Single or Multi)
System is continuoesly checking wether it is a single or multi system according its 2 seperate communication lines.
Single split
Channel
Case
1 (Normal)
Detected
Not
2 (Normal)
Detected
Not
3 (Abnormal)
Detected
4 (Abnormal) Detected
12.3.3.2
Multi Split
Channel
Fault
Action
Not detected
No Fault
Continue to the next step
Detected
No Fault
Continue to the next step
Not Detected
‘No Communication’
Detected
‘Mismatch between
IDU and ODU models’
Present Fault under the HMI.
Unit is forced to Idle mode.
Model Plug & Indoor Capacity Test
Test
How to check?
System Action
(ODU Mode)
Error to report?
Jumper is inserted/
'
!
ODU model is 0 (zero).
“Missing ODU
Force to Idle mode.
Jumper/DIP is
software
W
Force to Idle mode
IDU-ODU capacity
group mismatch
When ODU model is
"
group is not allowed.
“Mismatch between IDU
and ODU models “
Force to Idle mode
12-K
SM DLF 1-A.1 GB
CONTROL SYSTEM
The following combinations show the allowed and not allowed capacity group:
ODU Model
0
No
AB (GCD36 DCI)
AV(YBD036-H13/4HP 3Phase)
AE (4HP DCI 3-Phase)
AF (YBD042-H13/5HP DCI 3-Phase)
AG (YBD060-H13/6HP DCI 3-Phase)
AO (YBD042/5HP DCI)
AP (YBD060/6HP DCI)
AS (YBDE018 DCI)
AT (YBDE024 DCI)
AU (YBDE030 DCI)
No
No
No
No
No
No
No
No
No
Is it allowed capacity group?
Indoor Capacity
1
2
3
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
Capacity group
Capacity Code
Non Connected unit
0
1
2
3
4
0
1.0
1.5
1.7
2
3
12.3.4
4
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Temperature Measurements
12.3.4.1 Thermistors default value.
Thermistor
Default value
OCT
OAT
CTT
HST
OMT
RGT
RLT
ICT
RAT
COOL
1°C
43°C
43°C
75°C
43°C
43°C
43°C
43°C
SPT+4°C
System Reaction
HEAT
1°C
6°C
43°C
75°C
43°C
43°C
43°C
43°C
SPT-4°C
(1)
Replaced by OCT(1)
Notes:
(1) Whenever both OCT and OMT are faulty the compressor will be forced to OFF.
(2) Thermistor is defined as faulty (shorted/disconnected) if it’s faulty for more than 10 seconds continuously.
During this time, the system uses the last valid temperature
12.3.4.2 The following thermistor faults are detected by the system:
Thermistor
Thermistor is Disconnected
OCT
OAT
CTT
HST
OMT
RGT
RLT
ICT
RAT
SM DLF 1-A.1 GB
Temp < -35
Temp < -30
Temp < -30
Temp < -30
Temp < -30
Temp < -30
Temp < -30
Temp < -30
Temp < -30
°C
°C
°C
°C
°C
°C
°C
°C
°C
Thermistor is Shorted
Temp > 75 °C
Temp > 75 °C
Temp > 130 °C
Temp > 125 °C
Temp > 75 °C
Temp > 75 °C
Temp > 75 °C
Temp > 75 °C
Temp > 75 °C
12-<>
CONTROL SYSTEM
Any
H/NH
Any
5
CTT
Any
H/NH
Any
6
CTT
Any
H/NH
Any
7
HST
Any
H/NH
Any
†
8
OMT
Any
H/NH
Any
†
9
OMT
Any
H/NH
Any
†
†
†
†
†
†
†
†
†
†
†
†
†
†
†
†
†
†
†
†
†
†
†
†
†
Stop Comp
Normal
†
†
†
Yes
Normal
†
†
†
No
Normal
†
†
†
Yes
Normal
†
†
†
Yes
Normal
†
†
†
Yes
Normal
Yes
Stop Comp
†
†
12
RGTi
Multi
NH
Active
13
RLTi
Multi
NH
Active
14
RGTi/ RLTi/
ICTi
Multi
NH
Any
15
ICT
single
H/NH
NA
16
ICT
single
H/NH
NA
17
LWT
single
H
NA
†
†
†
†
†
18
19
LWT
EWT
single
single
H
H
NA
NA
†
†
†
†
†
20
EWT
single
H
NA
21
22
IRT
IRT
single
single
H
H
NA
NA
†
†
†
†
†
†
†
Normal
Yes
Stop Comp
Inactive
(Unavailable)
†
Stop Comp
Yes
Yes
NH
†
Yes
Yes
Multi
†
Stop Comp
†
RGTi/RLTi
†
Yes
†
11
†
Normal
Stop Comp
Normal
†
NH
†
Yes
Yes
Yes
†
Multi
Load calculation
†
†
RGTi/RLTi
12.4.1
†
†
10
Indoor Unit Control
†
†
Inactive
(Available)
12.4
†
†
System
Operation
OCT
†
TPT
4
†
ITU
Any
Any
Any
Technician/
Installation
H/NH
H/NH
H/NH
Idle
IDU Status
Any
Any
Any
Deicer
Hydro/
Non Hydro
OAT
OAT
OCT
Heat
Single/Multi
1
2
3
Cool
#
Sensor
ODU Mode
Fault
indication
12.3.4.3 System operation whenever a thermistor fault occurs
No
Normal
Yes
Stop Comp
Yes
Yes
Normal
Stop Comp
†
†
†
†
Yes
Normal
†
Yes
No
Stop Comp
Normal
†
LOAD is calculated according to the difference between actual room temperature and user set point temperature
by PI control.
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scheme.
The actual NLOAD to be sent to the outdoor unit controller is based on the preliminary LOAD
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[email protected]
NLOAD limits as a function of indoor fan speed:
Indoor Fan Speed
Maxium NLOAD Cooling
Maxium NLOAD Heating
Low
MaxNLOADIF1C
MaxNLOADIF1H
Medium
MaxNLOADIF2C
MaxNLOADIF2H
High
MaxNLOADIF3C
MaxNLOADIF3H
Turbo
MaxNLOADIF4C
MaxNLOADIF4H
Auto
MaxNLOADIF5C
MaxNLOADIF5H
12-1<
SM DLF 1-A.1 GB
CONTROL SYSTEM
NLOAD limits as a function of power shedding:
12.4.2
Mode
Power Shedding OFF
Power Shedding ON
Cooling
Heating
No limit
No limit
Nominal Cooling
Nominal heating
Indoor Fan Control
12.4.2.1 Indoor fan control - FAN Mode
x
x
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Turbo
HIGH
MEDIUM
LOW
VLOW
-1
SM DLF 1-A.1 GB
0
1
2
3
4
DT
12-1
CONTROL SYSTEM
12.4.2.2 Indoor fan control - Cool Mode
x
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following graph:
IFAN Speed
IFTURBO
IFHIGH
IFMED
IFLOW
IFVLOW
25
12.4.2.3
50
75
100
LOAD(n)
Indoor fan control – Heat Mode
12.4.2.3.1 IFAN Operation in set speed
%!
!%'[ž!
according to the graph below.
12.4.2.3.2 IFAN Operation in Auto Fan Mode
IFAN speed will be set automatically according to Load(n) by the following graph:
IFAN Speed
IFTURBO
IFHIGH
IFMED
IFLOW
IFVLOW
50
12-1?
75
100
LOAD(n)
SM DLF 1-A.1 GB
CONTROL SYSTEM
12.4.3
Cooling Mode
12.4.3.1
Cooling Mode – General
¡ &WW|%[^W&!
Temp: Selected desired temperature.
¡ |W%{%Q'ºQ%^\W%[^W
Timer: Any
I-FEEL: ON or OFF
^%^%
"¡
[^%
RCT (R/C sensor) in I-FEEL mode.
c.
12.4.3.2
Indoor Coil Temp is detected by ICT.
Control Functions
a.
COMP Operation
In general – the operation is set by the NLOAD calculation in indoor unit side.
Other rules are according to section 12.5.1.
b.
OFAN Operation
In normal operation OFAN operates together with the COMP.
Other rules are according to section12.5.3.
c.
IFAN Operation
IFAN will operate in ANY speed regardless the ICT or COMP state.
IFAN speed will be determined according to user selection or
AUTO-FAN logic (see para. 12.4.2.2)
12.4.3.3
d.
RV is OFF during COOL mode.
e.
HEATERS are OFF during COOL mode.
f.
PUMP operates in cool/dry mode (see protection section 12.6.1.1).
Sequence Diagrams
!
"!^q^
'[ž
(RT - SPT) [°C]
+3
+2
+1
0
-1
-2
-3
COMP Speed
decrease
ON
COMP
OFF
ON
OFAN
COMP Speed
increase
OFAN Speed
decrease
OFAN Speed
increase
OFF
User Fan Speed
IFAN
Very Low
OFF
ON
RV
SM DLF 1-A.1 GB
OFF
[email protected]
CONTROL SYSTEM
12.4.4
Heating Mode
12.4.4.1
Heating - General
¡Q{[^%[^W!
Temp: Selected desired temperature
¡ |W%{%Q'ºQ%^\W%[^W
Timer: Any
I-FEEL: ON or OFF
^%^%
"¡
[^%
RCT (R/C sensor) in I-FEEL mode.
c.
12.4.4.2
Indoor Coil Temp is detected by ICT.
Control Functions
a.
COMP Operation
In general – the operation is set by the NLOAD calculation in indoor unit side.
Other rules are according to section 12.5.1.
b.
OFAN Operation
In normal operation OFAN operates together with the COMP.
Other rules are according to section 12.5.3.
c.
IFAN operation:IFAN will operates according heat mode rules. See section 12.4.2.3.
12.4.4.3
d.
RV is ON during HEAT mode.
e.
f.
HEATERS – See section 12.4.9.
PUMP is OFF during heat mode.
Sequence Diagram
Maintains room temp. at desired level by comparing RAT or RCT to SPT.
(RT - SPT) [qC]
+3
+2
+1
0
-1
-2
-3
COMP Speed
decrease
ON
COMP
OFF
ON
OFAN
COMP Speed
increase
OFAN Speed
decrease
OFAN Speed
increase
OFF
User Fan Speed
IFAN
OFF
See IFAN Rules
ON
RV
12-1=
OFF
SM DLF 1-A.1 GB
CONTROL SYSTEM
12.4.4.4
Temperature Compensation
[
@}<ƒ!
@!'<%
@@@!
%@
on room thermistor.
The temperature compensation can be enabled/disabled by closing/opening J2 on the indoor unit controller.
No compensation will be activated in Forced operation modes.
12.4.4.5
Indoor Fan Control in Heat Mode
%!
!%
@%'[ž!!!
12.4.5
Automatic Cooling or Heating
12.4.5.1
Automatic Cooling or Heating - General
Mode: AUTO
Temp: Selected desired temperature
Fan:
Any
Timer: Any
I-FEEL: ON or OFF
12.4.5.2
Control Functions
a.
b.
c.
Switching-temperature between Cooling and Heating is SPT ± 3OC.
When the AUTO Mode is started with SPT +/-0 O&%
[Q
[&"'
%"[ž
with IFAN operating at low speed. The proper Auto Heat mode or Auto Cool will be
started whenever the RT reaches SPT-1OC or SPT+1OC respectively.
Mode change between Auto Heat & Auto Cool Modes is possible only after the
COMP has been OFF during the last T minutes.
Mode Change
Time, T
Auto Cool to Auto Heat
Auto Heat to Auto Cool
3 min
4 min

[email protected]&`"[%
operate in (Auto) Cool Mode until the conditions for switching from Auto Cool to
[Q

[email protected][%
operate in (Auto) Heat Mode until the conditions for switching from Auto Heat to
[&
SM DLF 1-A.1 GB
12-1F
CONTROL SYSTEM
12.4.6
Dry Mode
12.4.6.1
DRY - General
Mode: DRY
Temp: Selected desired temperature
Fan:
LOW (automatically selected by software)
Timer: Any
I-FEEL: ON or OFF
12.4.6.2
Control function
a.
COMP Operation
In general – the operation is set by the NLOAD calculation in indoor unit side.
Other rules are according to section 12.5.1.
b.
OFAN Operation
In normal operation OFAN operates together with the COMP.
Other rules are according to section 12.5.3.
c.
IFAN Operation
LOW only.
d.
RV
RV is in OFF state during DRY mode.
e.
HEATERS
f.
Pump
HEATERS are in OFF state during DRY mode.
Pump operates in cool/dry mode.
12.4.6.3
Sequence Diagrams
"
"!&
LOW speed IFAN.
RAT-SPT
1
0
IFAN Low
''#"
NLOAD
#"
Note 1
Note 1
0
NLOAD
Note 1
min{!
",127}
MaxNLOADIF1C
#$
"
12-1
#%&
"
Min(ICT,ICTE)
SM DLF 1-A.1 GB
CONTROL SYSTEM
12.4.7
Sleep Mode
12.4.7.1
Sleep Mode - General
Mode: Any
Temp: Selected desired temperature
IFan:
Any
Timer: See below
I-FEEL: ON or OFF
12.4.7.2
Control function
o The Sleep mode is activated by using the SLEEP button on the R/C. In Sleep
%"€
q^`
temperature (RT) gradually to provide maximum comfort for the sleeping user.
q
^'{@^@%^'{|{
12.4.7.3
to TIMER function.
'&WW|%[^W&WW|„
%q^€
(from 0 to +3oC).
'Q{[^[^WQ{[^
%q^€
!
(from 0 to -3oC).
'
%
q^€
^q^€
q
'@W<
%"!q\@@_
@
operation.
Sequence Diagrams
RT
7 Hours Sleep operation
for Normal Sleep Mode
Unit is turned to SB
after Sleep
SPT+3
Cool, Dry modes
SPT+2
SPT+1
SPT
SPT-1
SPT-2
Heat mode
SPT-3
Start
Sleep
12.4.8
1
2
3
4
5
6
7
8
Time [Hr]
Forced Operation

"
"\
%
&!
Q!%<
[email protected]!¡
Forced operation Mode
Pre-set Temperature
Cooling
Heating
200C
280C
NOTES
Ì @% temperature compensation is disabled.
Ì ^'[ž
"
to Autofan Speed in forced operation.
SM DLF 1-A.1 GB
12-1J
CONTROL SYSTEM
12.4.9
x
x
x
Indoor Units Operation when Indoor Unit Mode is Different than
Outdoor Unit Mode
Open louvers according to user selection.
Indoor fan is forced to OFF.
Indoor unit led is blinking
12.4.10
Indoor Unit Dry Contact
Status
Function
Contact = Open
Contact = Short
J9 = Open
Clock
See below
See below
J9 = Short
Presence Detector Connection
No action - normal operation
Forced to STBY
The Clock is activated according to the following table:
A/C STATE
(before clock is
changed)
CLOCK STATE
(before clock is changed)
CLOCK ACTION (clock
is changed)
A/C NEW STATE
(after clock is
changed)
ON
1
0
OFF
ON
0
1
ON
OFF
0
1
ON
OFF
1
0
OFF
12.4.11
On Unit Controls and Indicators
STAND BY
INDICATOR
OPERATION
INDICATOR
Lights up when the Air Conditioner is connected to power and ready to receive
the R/C commands
Lights up during operation.
Blinks for 300 mSec to announce that R/C infrared signal has been received and
stored.
Blinks continuously during protections (according to the relevant spec section).
TIMER INDICATOR
Lights up during Timer and Sleep operation.
FILTER INDICATOR
Lights up after fix period of operation to indicate that filter needs to be cleaned.
COOLING
INDICATOR
HEATING
INDICATOR
Lights up when system is switched to Cool Mode by using the Mode Switch on the
unit.
Lights up when system is switched Heat Mode by using the Mode Switch on the
unit.
Mode SWITCH
(COOL/HEAT/OFF)
Every short pressing , the next operation mode is selected, in this order :
SB Cool Mode Heat Mode SB …
In long pressing system enters diagnostic mode.
12-1K
SM DLF 1-A.1 GB
CONTROL SYSTEM
12.5
Run Mode
@@
"
^
(at customer site).
System can go from run mode to other operation modes through keyboard or serial ports.
12.5.1
Mode Setting
^
W^
¡
1.
STBY – Standby mode
2.
COOL - the unit operate at cooling cycle
3. HEAT - the unit operates at heat pump cycle (deicer will be treated as sub-mode of heat
mode in the thermal Mode setting).
^
{{W%
"
%@
STBY.
12.5.2
Compressor Speed Control
The following diagram describes the sequence of the Target Frequency calculations:
NLOAD calculation
Max/Min freq limitation
In Protection (Prot status
other than Normal)?
No
Yes
NLOAD re-calculation
(Every 1minute)
StepFreq control
Illegal freq checking
Final target freq
SM DLF 1-A.1 GB
12->
CONTROL SYSTEM
12.5.2.1
Compressor Min On/Off time
Compressor minimum ON and OFF time is 3 minutes except during protections.
12.5.2.2
Compressor Startup

%
"=>΃>q!!
;
@W
12.5.2.3
Compressor start up fail
'@
%
"+>
second and up to 3 minutes it will report a compressor lock or unusal behavior.
12.5.2.4
Compressor operation while OFAN Error
'
W[ž@+>
%
to OFF until OFAN error will recover.
12.5.2.5
Speed Change Limitations
Acceleration and deceleration will be 1 RPS/sec.
12.5.2.6
Speed Step Limitations
Max Allowed
Frequency
Step4Freq
Step3Freq
Step2Freq
Step1Freq
Step1Time
Maximum Allowed Frequncy
after compressor starts up
Step2Time
Step3Time
Step4Time
Time (min)
Compressor Starts up
(Actual Freq>0)
12.5.2.7
Illegal frequencies
Illegal Frequencies are values that the unit is not allowed to be working at. The frequencies and values within
tolerance of ±2 Hz are not allowed.
12.5.2.8
Compressor shutdown Cases
#
Shutdown Reason
1
Single: ODU NLOAD=0 (or IDU protections)
2
Single: IDU change to STBY.
3
Multi: All IDU`s become inactive.
4
Deicing (both when going from heat to cool and from cool to heat)
5
ODU Protections
6
Sensor fault: according sensor fault list
7
HPS protection
8
9
LPS protection
OFAN-ERR (Up and Down)
10
PFC TRIP
11
W
12-2
SM DLF 1-A.1 GB
CONTROL SYSTEM
12.5.2.9 Compressor taget frequency
During normal operation (excluding protections) the compressor target frequency is set according to
the ODU NLOAD number received from the indoor unit.
ODU NLOAD
Target Frequency [Hz]
0
0•'+='<“–
>MinFreq
0
MinFreq
Linear relation between Min and Max freq.
12.5.3
EEV Control
12.5.3.1 EEV General Rules
The EEV is controlled to keep the optimal system performance at all times. It is done by means of discharge
superheat temperature and optimum compressor temperature control.
The target EEV value is the sum of open loop value (OL) and a result of the accumulative correction values (CV).
EEV = EEVOL —˜$$Š%Š
i
i
i
12.5.3.2 EEV initialization procedure
[@%{{K
@‚
"
position.
12.5.3.3 Balance time
!
;
@q\
[@
"
EEVCVTConst seconds.
12.5.3.4 Operation Range
^{{K!
!
@!¡
Comp Status
ODU Mode
EEV
On
COOL
From !!()) to !!())
On
HEAT
From !!()) to !!())
On/Off
De-ice
EEVDeiceOpenSingle
OFF
Cool/Heat/Idle
400
12.5.3.5 EEV initial value determination (EEVOL )
i
^{{K
!%
and indoor/outdoor conditions.
SM DLF 1-A.1 GB
12-2
CONTROL SYSTEM
)
i
^{{K
!%
the actual compressor speed and indoor/outdoor conditions. The correction
value is targeting towrds optimal behavior of the system.
The following table describes the closed loop control type (EEV correction):
Mode
Main EEV
Cool
Target CTT
Discharge super heat protection
CTT Protection
Heat
Target CTT
Discharge super heat protection
CTT Protection
Sub-cooling (SC) protection
12.5.4
Outdoor Fan Speed Control
12.5.4.1 General Rules
^W[ž
!
"
!
reducing the OFAN speed.
ž<W[ž
%W^W&^
OFAN Speed Cool mode
OFAN Speed Heat mode
Max
Max
Min
Min
27
38
Max (OCT,OMT)
8
15
Min (OCT,OMT)
12.5.4.2 Night mode
!!%W[ž
12.5.4.3 Behavior when there is a failure in OFAN
Whenever OFAN fault occurs the compressor will be stopped immediately.
12.5.4.4 Protection Behavior
OFAN will enter protection speed according to CTT / HST / OMT protection level. Whenever one of these
%W[ž
`&`!"
12-2
SM DLF 1-A.1 GB
CONTROL SYSTEM
12.6
Thermodynamic Protections
12.6.1
IDU Protections
12.6.1.1 Condensate Water over Flow Protection
{@
+%}%=
¡
1 – When it is shorted with P4
0 – When it is not shorted to P4
P2
P3
Level
Don’t care
Don’t care
1
0
Normal
W
Overflow when
unit is ON
Overflow
Water Level
Overflow when
unit is OFF
Normal
ON
OPER
LED
OFF
BLINK
ANY
NLOAD
NLOAD is
forced to 0
0
ON
PUMP
OFF
8 min
12.6.2
8 min
8 min
ODU Protections
12.6.2.1 Protection types
There are 2 types of protection: Thermodynamic protections and Cut-Off protection
Thermodynamic
Cut-Off protection
Compressor AC Over Current
Low Pressure Switch
Compressor DC Over Current / Driver Overload
High Pressure Switch
Heat Sink Overheating
W
Indoor Coil Overheating
Exceeding Operating Conditions
Outdoor Coil Overheating
Compressor Overheat Protection
Indoor Coil Defrost
12.6.2.2 Protection status
Thermodynamic protections are based on reducing compressor frequency when needed. The following represent the
possible protection status and their actions
SM DLF 1-A.1 GB
12-2
CONTROL SYSTEM
Protection Status
General Description
Normal
No protection
Hz Up
Compressor frequency is allowed to increase slowly
Stop Rise
Compressor frequency is not allowed to rise
Hz Down 1
Compressor frequency is reduce
Hz Down 2
Compressor frequency is reduce
Stop Compressor
Compressor is stopped
Each protection has protection status. The following are the possible protection status:
Active In?
Protection Status
Cool/Heat
Deicer
Technician/TPT/
Installation
ITU
Normal
Hz Up
x
x
x
Stop Rise
x
x
x
Hz Down 1
x
x
x
Hz Down 2
x
x
x
Stop compressor
W ! @ " ^ &^^% Qq^% [&&% &&%W^ controlled by changing the protection level using the fuzzy logic algorithm according the input level and the change rate.
The following table summarizes the basic levels of each protection:
Protection Compressor Heat Sink
level
Overheat
Overheat
SC
D2
D1
SR
Hz Up
Normal
CTTOH5
CTTOH4
CTTOH3
CTTOH2
CTTOH1
CTTOH0
HSTOH5
HSTOH4
HSTOH3
HSTOH2
HSTOH1
HSTOH0
Compressor Compressor
Outdoor Coil Indoor Coil Indoor Coil
DC
AC
Overheat
Overheat
Freeze
Overcurrent Overcurrent
CCROC3
DCROC3
OMTOH5
ICTOH5
ICTDEF5
OMTOH4
ICTOH4
ICTDEF4
CCROC2
DCROC2
OMTOH3
ICTOH3
ICTDEF3
CCROC1
DCROC1
OMTOH2
ICTOH2
ICTDEF2
CCROC0
CCROC0
OMTOH1
ICTOH1
ICTDEF1
OMTOH0
ICTOH0
ICTDEF0
Stop Compressor
CTTOH5
CTTOH4
Hz Down2
CTT
+ CTTOH3
Hz Down1
CTTOH2
Stop-Rise
CTTOH1
Hz Up
CTTOH0
Normal
12-2
SM DLF 1-A.1 GB
CONTROL SYSTEM
^
"[email protected]
12.6.3
Deicing
12.6.3.1 Deicing Starting Conditions
12.6.4.1 Deicing Starting Conditions
Deicing operation will start when either one of the following conditions exist:
Case 1: OCT is 8 degree lower then the ambiant temp and the minimum time from the last deicer is passed.
Case 2: OCT is 12 degree lower then the ambiant temp and 30 minutes from the last deicer wa passed.
!
%
+>
@W&^Ð<}%
ƒ>
in other cases.
Deicing interval time is changed (increased/ decreased in 10 minutes steps) as a function of deicing time.
'
@
Deicer may accure also when the unit switch to stanby and the OCT is 8 degree lower then ambiant
temperature
12.6.3.2 Deicing Protection Procedure
OCT
12
0
Threshold
COMP
ON
T1
T2
T1
max. 12 minutes
RV
COOL
OFAN
DT
HEAT
T3
T3
ON
OFF
!!()
EEV
Any
^+Ñ^}Ñ=~
%^=Ñ~
SM DLF 1-A.1 GB
12-2
CONTROL SYSTEM
12.6.4
High/Low Pressure Protection
!
"
"
<
%!
and low pressure switchs turns on (short) and stops the compressor until these limits are redrawn.
Fault code error 8 (HPS) or 9 (LPS) will be shown until compressor will resume operation.
12.7
Technician Test Mode
This test is aimed for the technicians to check the system under a preset compressor and outdoor
fan values while the expansion valves will function according to the normal running mode.
12.7.1
Entering Technician Mode
This mode is entered through the outdoor unit using the HMI (refer to user interface
section).
o It can be selected either for cool or heat.
o Technician test is not possible to enter during deicer.
o
12.7.2
Technician Mode Procedure
All the connected Indoor units will enter technician test at high indoor fan speed.
The outdoor unit will be working normally (according to the run mode control logic) except
the following changes:
R The dry contacts inputs will be ignored.
R Protections will be operative for stop compressor only.
R The compressor and the outdoor fan will be working in target preset values according to
the number and size of IDUs.
12.7.3
Exiting Technician Mode
Technician mode will be exited either when:
Escaping by the HMI (exiting the ttC or ttH menus)
o
o
60 minutes are passed from entering
12.8
User Interface
12.8.1
User interface description
o ^
@
_
!
%ƒ"
o ¹"
%^ƒ"
¡
- Scroll - used to scroll between options (up and down)
Up
- Select - use to select an option
- Escape - Will go up one level in the menu
Esc
Select
o The user interface concept is Tree menus.
o Active selection or status will be indicated by a dot at the
Down
right side of the third digit.
12.8.2
Keys functionality
o Scrolling will be done whenever the button is pressed.
o 
!
%@
%
!
of one step per second.
o !!`
!%@
%
!
@
[@}
%@
%
rate of change will increase to 10 steps per second.
The display will not roll over during selection (for example stop/Ode/Dia/Stp/Par/stop)
12-2
SM DLF 1-A.1 GB
CONTROL SYSTEM
12.8.3
Menus
12.8.3.1 Main Menu
Mode (Cl/Ht/Sb)
Technician Test (tt)
Technician Test Cool (PtC)
Technician Test Heat (PtH)
Charge Test Cool (CtC)
Charge Test Heat (CtH)
Installation Test (it)
(Multi Only)
Number of IDU`s
Begin test
Test Result
Matrix Table Test Result
Problem Correction
Diagnostics (dia)
Outdoor Unit (oxx)
Indoor Unit A (axx)
Indoor Unit B (bxx) (Multi Only)
Indoor Unit C (Cxx) (Multi Only)
Indoor Unit D (dxx) (Multi Only)
Indoor Unit E (Exx) (Multi Only)
Set Up (Stp)
(Multi Only)
First IDU Wins (Idu)
IDU A is master (A-P)
IDU B is master (b-P)
IDU C is master (C-P)
IDU D is master (d-P)
IDU E is master (E-P)
Status (Stt)
IDU (Idu)
ODU (odu)
Timer (tr)
SM DLF 1-A.1 GB
12-2
CONTROL SYSTEM
Notes:
o
The default presentation will be the mode of the unit (Cl/Ht/Sb).
o
In diagnostics menu, xx means failure code. Only the last active (operative) failure code will
be shown, if there is no active failure a “-“sign will be shown (the faults Numbers are the one
shown in the single split table).
o
Technician Test mode is exited after 60 minutes from entry.
o
All the menus, except technician menus- Status, Technician Test and their sub menus, are
automatically exited to the main menu after 1 continuous minute out of any press.
o
When Technician test cool or heat menu is selected, it will blink constantly until this menu is
escaped.
o
Pressing select and escape buttons together when in RST for more than 5 seconds will
restore only the parameters of the factory settings. Acknowledge for restored parameters
will be indicated by blinking RST for 3 seconds.
o
When a thermistor is shorted or disconnected it shows FLT (FLt), when it is disabled it
shows DIS (dis).
o
It’s possible to present a number between 999 and 99,999 by alternating between two
numbers (each number is presented for 1 second). The two numbers format is "xx, yyy".
o
Pressing select + escape together for 5 seconds will reset the counter to 0.
o
The compressor time is measured in hours.
SM DLF 1-A.1
12-29
CONTROL SYSTEM
12.8.3. Status (Sub Menu)
Status (Stt)
IDU
ICT
(Multi Only)
(Multi Only)
(Multi Only)
(Multi Only)
ICT-A
ICT-B
ICT-C
ICT-D
ICT-E
RAT
(Multi Only)
(Multi Only)
(Multi Only)
(Multi Only)
RAT-A
RAT -B
RAT -C
RAT -D
RAT -E
Operation Mode
(Multi Only)
(Multi Only)
(Multi Only)
(Multi Only)
Operation Mode-A
Operation Mode-B
Operation Mode-C
Operation Mode-D
Operation Mode-E
Load
(Multi Only)
(Multi Only)
(Multi Only)
(Multi Only)
Load-A
Load-B
Load-C
Load-D
Load-E
Capacity Code
(Multi Only)
(Multi Only)
(Multi Only)
(Multi Only)
Code-A
Code -B
Code -C
Code -D
Code -E
Family
(Multi Only)
(Multi Only)
(Multi Only)
(Multi Only)
Family -A
Family -B
Family -C
Family -D
Family -E
Model
SM DLF 1-A.1
12-
CONTROL SYSTEM
(Multi Only)
(Multi Only)
(Multi Only)
(Multi Only)
Model -A
Model -B
Model -C
Model -D
Model -E
ODU
#of IDUs
Operation Mode
OFAN Up
OFAN Down
RV
Speed
CTT
OMT
OCT
HST
OAT
RGT-A
(Multi Only)
RGT-B
(Multi Only)
RGT-C
(Multi Only)
RGT-D
(Multi Only)
RGT-E
(Multi Only)
RLT-A
(Multi Only)
RLT-B
(Multi Only)
RLT-C
(Multi Only)
RLT-D
(Multi Only)
RLT-E
EEV A
EEV B
(Multi Only)
EEV C
(Multi Only)
EEV D
(Multi Only)
EEV E
Power (System)
AC Current
DC Current
ODU Model
SW version
(Multi Only)
(Multi Only)
(Multi Only)
Timer
Compressor Time
SM DLF 1-A.1
12-
CONTROL SYSTEM
12.8.4
Technician Perpherial Test (TPT)
Technician Peripheral test mode designed especially for Technician personal to provide
"
W[ž%{{K%K%&W%
Each item is operated directly so no software logic can deny the operation.
12.8.4.1 General Rules
™
Entering TPT – Set Jumper J8 to ON and Power Up. The main menu will be switched to
the TPT menu.
Navigate the HMI For the required test and press the “Select” for more than 5sec until the
test name will blink.
™
™
™
Exiting TPT<W%qÓӅW^
switched back to normal menu.
All the menus and their sub menus are automatically exited to the top of TPT menu after 1
continuous minute out of any press.

!!
%
[email protected]
code will be shown in diagnostics and the fault code will blink continuously for 30sec (or until
“esc” has been pressed).
™ @
%X{]
@X^
^]
“ESC” button was pushed or “OFF” was pushed. The display will show: “End” for 5 seconds
and return to normal display according the menu.
12.8.4.2 TPT Sub-Menu
SM DLF 1-A.1 GB
12-3
CONTROL SYSTEM
12.8.4.3 Pump Down Test procedure
Pump Down is used to evacuate the refrigerant back to the ODU in case of need to dis-connect the
indoor unit or the inter-connecting piping for repair.
1.
Start the operation by navigating the HMI.
2.
A/C will start operate.
3.
After about 1 @<
%
"
¡
At this stage - close the Liquid valve.
4.
[@+
%
+;!%
theLPS - Low pressure status will blink:
5.
Close the suction valve
6.
Shut the unit power OFF
The test will end after about 2 minutes. This is for percussion reasons in case the unit
7.
will not be shut OFF (or not closes the valves).
12.8.4.4 OFAN Test procedure
1.
2.
3.
4.
Start the operation by navigating the HMI.
Both OFANs will start operation.
After about 30 sec the fans will be shut off.
'@"@W[ž
!%W[ž
@
faulty.
12.8.4.5 EEV Test procedure
1. Start the operation by navigating the HMI.
2. Press up or down to move the EEV by 10 steps each push.
3. Replace if faulty.
12.8.4.6 Compressor Test procedure
1.
2.
3.
Start the operation by navigating the HMI.
A/C will start operate.
|
%^
measurements to assure the operation.
4. After about 30 sec the A/C will be shut off.
5. '@
!%
@@"
12.8.4.7 RV Test procedure
1.
2.
Start the operation by navigating the HMI.
Listen to RV “clicks” (2 cycles) to assure operation.
3. Replace if faulty.
12.8.4.8 Temperature Sensor Test procedure
1.
Start the operation by navigating the HMI.
2.
[`&
!
%"
3. '@
%
@"
4. The display will show the faulty thermistor name following by “FLT” display:
%%
5.
6.
12-3
This message should be displayed blinking for 30 sec.
Replace the faulty sensor.
Note š the fault is NOT send diagnostics as “Short” or “Disconnected”.
SM DLF 1-A.1 GB
CONTROL SYSTEM
12.8.4.9 Gas Block Test procedure
This test is used for technician to check the blockage within the system. The test is operates in heat
mode and the technician should close the liquid valve manually.
1.
2.
Start the operation by navigating the HMI.
Note - The test is not operable when OAT<5q&'@
%
"
¡X[]
3.
4.
A/C will start operate in Heat Mode.
[@+
@<
%
"
¡
At this stage - close the Liquid valve.
5.
6.
[@+
%
+;!%
LPS - Low pressure status will blink:
At this stage the technician should observe if any ice accumulates on the coil or EEV
7.
section that may indicate on any gas block.
The test will end after about 15 minutes. This acts as percussion in case the unit will not be
shut OFF (or not closes the valves).
12.8.4.10 Communication Test procedure
Check if communication fault occurs between the Indoor and outdoor units.
Note – Require test tool (560Ohm) P/N 416765.
Start the operation by navigating the HMI.
1. Disconnect the IDU-ODU communication connector from main board of ODU.
2. Connect test tool between the 2 pins.
3. [@=>
%
"
X[q]X|]¡
4.
'@ X|^] W '@ X
] % indoor controller.
12.9
Jumper/DIP-Switch Setting
>
›#œ*žŸ €
0 = Open (Disconnected)
1 = Close (Shorted)
12.9.2
IDU Jumpers/DIP-Switch
12.9.2.1
Self test Jumper/DIP – J1
Position
Status
0
Open (Disconnected)
1
Close (Shorted)
Description
Normal Operation (Default)
Self Test enabled
Used for internal production line testing. For normal use must be set to OFF (0).
SM DLF 1-A.1 GB
12-3
CONTRO
OL SYSTEM
M
12.9.2.2
1
Compe
ensation Jumper/DIP
J
P – J2
Possition Statuus
Descriptio
on
0
Openn (Disconneected)
Compensaation deactiv
vated
1
Closse (Shorted))
Compensaation activatted (Defaultt)
Used ffor height coompensation in heat m
mode
12.9.2.3
1
Family selection Jumper/D
DIP – J3, J4,
J J5, J11
1
#
Fam
mily Name
DLS
SE 36
DLS
S 43
DLS
SE 18-30
12.9.2.4
1
J3
J
J4
J5
1
1
0
NA
1
NA
1
0
1
Model selection
s
Jumper/D
DIP – J7, J8
J
J7
J8
A
0
0
B
1
0
C
0
1
D
1
1
Model
12.9.2.5
1
Clock/P
Presence Detector/D
DIP – J9
Possition Statuus
Descriptio
on
0
Openn (Disconneected)
Clock enab
bled (Defau
ult)
1
Closse (Shorted))
Presence detector
d
enaabled
12.9.3
1
O
ODU Jumpers
12.9.3.1
1
Self tes
st Jumper/
r/DIP – J1
Possition Statuus
Descriptio
on
0
Openn (Disconneected)
Normal Op
peration (Default)
1
Closse (Shorted))
Self Test enabled
e
Used ffor internal production line testingg. For normaal use must be set to OFFF (0).
SM DLF 1-A.1
12-
12.9.3.2
1
ODU Model Selection Jum per/DIP – J2, J3, J4, J5, J6, J7
See
S below taable
12.9.3.3
1
TPT test Jumper /DIP – J8
Possition Statuus
Descriptio
on
0
Openn (Disconneected)
Normal Op
peration (Default)
1
Closse (Shorted))
Test enablled
Used ffor techniciaan testing – TPT. For nnormal use must
m be set to OFF (0)..
12.9.4
Dip-Switc
ch Setting
g Table
#
1
2
3
4
5
6
7
8
J
J2 J3 J5 J7 J8 J9 J10 J12
DLF IDU
DLF 18
ON
OFF
DLF 24
ON
OFF
ODU
ODU
Model
J1
YBDE 018-H11
AS
ON
OFF
YBDE 024-H11
AT
ON
OFF
SM DLF 1-A.1
J2
J3
J4
12-
CONTROL SYSTEM
12.9.5
Remote Control RC-8
Reset Operation – ! "! !#! SM DL) -A.1 GB
12-37
CONTROL SYSTEM
12.10
System Parameters
12.10.1
General Parameters for All Models
#
Name
Default Value
Units
1.
MinOFFTime
3
minute
2.
MinONTime
3
minute
3.
DImin
30
minute
4.
DImax
240
minute
5.
TimeD
1
minute
6.
DTmin
2
minute
7.
DIT
10
minute
8.
CTMRUP
10
minute
9.
DIF
30
minute
10.
TCT
240
second
11.
DEICT1
60
second
12.
DEICT2
36
second
13.
DEICT3
6
second
14.
DSTF
12
°C
15.
OMTOH0
50
°C
16.
OMTOH1
53
°C
17.
OMTOH2
56
°C
18.
OMTOH3
59
°C
19.
OMTOH4
61
°C
20.
OMTOH5
63
°C
12-38
SM DLF 1-A.1 GB
CONTROL SYSTEM
AT
YBDE024-H11
AU
YBDE030-H11
AB
YBD036-H11
AV
YAD036-H13
AF
YAD042-H13
AG
YAD060-H13
AO
YBD042-H11
ODU Model Dependent Parameters
AS
YBDE018-H11
12.10.2
Range
MinFreqC
23
24
20
20
20
20
20
20
0-127
1
Hz
MaxFreqC
79
89
70
90
57
65
70
65
0-127
1
Hz
MinFreqH
23
24
20
20
20
20
20
20
0-127
1
Hz
MaxFreqH
80
89
75
95
61
70
75
65
0-127
1
Hz
DeicerFreq
65
80
80
90
65
70
75
65
0-127
1
Hz
Step1Freq
40
40
40
40
40
40
40
40
0-127
1
Hz
Step2Freq
65
65
55
60
50
55
55
60
0-127
1
Hz
Step3Freq
75
75
65
70
60
65
65
70
0-127
1
Hz
Step4Freq
95
95
85
80
80
80
80
80
0-127
1
Hz
Step1Time
3
3
3
3
3
3
3
3
0-7
1
Min
Step2Time
3
3
3
5
3
3
3
3
0-7
1
Min
Step3Time
1
1
1
1
1
1
1
1
0-7
1
Min
Step4Time
1
1
1
1
1
1
1
1
0-7
1
Min
NightRPS
NA
27
NA
20
70
45
50
55
50
0-110
1
RPS
OFMinRPMC
NA
27
20
15
15
15
15
0-130
1
*10RPM
OFMinRPMH
27
27
30
20
20
20
20
20
0-130
1
*10RPM
OFMaxRPMC
85
85
85
95
80
85
85
85
0-130
1
*10RPM
OFMaxRPMH
NA
85
NA
75
NA
60
95
80
85
85
85
0-130
1
*10RPM
NightRPM
80
50
60
60
60
0-130
1
*10RPM
OFNNoiseMaxRPMC
NA
NA
78
90
75
75
75
75
0-130
1
*10RPM
OFNNoiseMaxRPMH
NA
8
NA
8
NA
8
95
75
75
75
75
0-130
1
*10RPM
OCT_OFAN_Noise_Max
8
8
8
8
8
0-15
1
°C
OMT_OFAN_Noise_Max
38
38
35
38
35
35
35
35
27-42
1
°C
Parameter Name
Res.
Unit
EEVMinOperOpenC
70
70
70
70
70
70
70
70
0 – 1023
1
step
EEVMaxOperOpenC
480
480
480
480
480
480
480
480
0 – 1023
1
step
EEVMinOperOpenH
70
70
80
80
70
70
70
80
0 – 1023
1
step
EEVMaxOperOpenH
480
480
480
480
480
480
480
480
0 – 1023
1
step
CTTOH0
78
78
78
80
80
80
80
80
0-120
1
°C
CTTOH1
85
85
85
87
87
87
87
87
0-120
1
°C
CTTOH2
90
90
90
90
90
90
90
90
0-120
1
°C
CTTOH3
95
95
95
92
92
92
92
92
0-120
1
°C
CTTOH4
100
100
100
95
95
95
95
95
0-120
1
°C
CTTOH5
105
105
105
96
96
96
96
96
0-120
1
°C
CCROC0
8.5
8.5
12
17.0
10.0
10.0
10.0
22.0
5-40
0.1
A
CCROC1
9.5
9.5
12.6
17.6
11.0
11.0
11.0
23.0
5-40
0.1
A
CCROC2
10.5
10.5
13.5
18.2
12.0
12.0
12.0
24.0
5-40
0.1
A
CCROC3
11.5
11.5
15.5
19.0
13.0
13.0
13.0
25.0
5-40
0.1
A
DCCOC0/ OVRPWR0
2350
2350
2950
12.0
12.0
12.0
12.0
22.0
5-40
0.1
A
DCCOC1/ OVRPWR1
2500
2500
3050
12.8
13.0
13.0
13.0
23.0
5-40
0.1
A
DCCOC2/ OVRPWR2
2650
2650
3200
13.2
14.0
14.0
14.0
24.0
5-40
0.1
A
DCCOC3/ OVRPWR3
2800
2800
3400
13.6
15.0
15.0
15.0
25.0
5-40
0.1
A
65
65
59
64
62
62
62
62
0 –110
1
°C
HSTOH0
SM DLF 1-A.1
12-39
AS
YBDE018-H11
AT
YBDE024-H11
AU
YBDE030-H11
AB
YBD036-H11
AV
YAD036-H13
AF
YAD042-H13
AG
YAD060-H13
AO
YBD042-H11
Range
HSTOH1
71
71
65
70
73
73
73
68
0 –110
1
°C
HSTOH2
74
74
67
73
75
75
75
73
0 –110
1
°C
HSTOH3
77
77
69
75
77
77
77
75
0 –110
1
°C
HSTOH4
78
78
78
78
78
78
78
77
0 –110
1
°C
HSTOH5
85
85
85
80
81
81
81
80
0 –110
1
°C
ICTDef0
13
13
13
6
6
6
6
6
-23 – 8
1
°C
ICTDef1
10
10
10
4
4
4
4
4
-23 – 8
1
°C
ICTDef2
8
8
8
3
3
3
3
3
-23 – 8
1
°C
ICTDef3
6
6
6
2
2
2
2
2
-23 – 8
1
°C
ICTDef4
3
3
3
1
1
1
1
1
-23 – 8
1
°C
ICTDef5
0
0
0
0
0
0
0
0
-23 – 8
1
°C
ICTOH0
44
44
44
45
50
50
50
45
35– 66
1
°C
ICTOH1
50
50
50
49
52
52
52
49
35– 66
1
°C
ICTOH2
54
54
54
51
54
54
54
51
35– 66
1
°C
ICTOH3
58
58
58
53
58
58
58
53
35– 66
1
°C
ICTOH4
60
60
60
55
61
61
61
55
35– 66
1
°C
ICTOH5
61
61
61
61
63
63
63
61
35– 66
1
°C
OCTExitDeicer
10
10
10
12
12
12
12
12
12 - 28
1
°C
MaxDeicerTime
12
12
12
12
12
12
12
12
12 – 20
1
Min
EEVDecierOpenSingle
350
150
500
480
480
480
480
480
0 – 1023
1
Step
DeicerCoef
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.7 – 1
0.1
NA
Parameter Name
Res.
Unit
12.10.3. IDU Model Dependent Parameters
Parameter Name
Cap.Group
ICTSTSpeed
ICTVLSpeed
ICTLSpeed
ICTHSpeed
ICTTSpeed
SM DLF 1-A.1
DLSE18
DLSE24
DLSE30
DLSE36
DLS43
3
25
28
30
32
40
4
25
28
30
32
40
4
25
28
30
32
40
4
25
28
30
32
40
4
25
28
30
32
40
12-0
CONTROL SYSTEM
12.11
7-Segment Legend
7-segments legeend
SM DLF 1-A.1 GB
12-41
TROUBLESHOOTING
13.
TROUBLESHOOTING
13.1
Precaution, Advise and Notice Items
13.1.1
High voltage in Indoor and Outdoor unit electrical assembly
ƒ Open the Outdoor unit controller assembly only after one minute from power off.
ƒ Whole controller assembly, including the wires, connected to the Outdoor unit may
have the potential hazard voltage when power is on.
ƒ Touching the Outdoor unit controller assembly may cause an electrical shock.
ƒ into the controller when power is on.
13.1.2
Charged Capacitors
ƒ Large capacity electrolytic capacitors are used in the outdoor unit controller and
driver.
ƒ Charging voltage (380VDC) remains after power is down.
ƒ Discharging takes about one minute after turned off.
ƒ Touching the outdoor unit electrical assembly before discharging may cause an
electrical shock.
ƒ Measure the electrolytic capacitors voltage to be below 50VDC before further checking
electrical assembly parts.
13.1.3
Advisory Notes
ƒ When open the Outdoor unit electrical assembly, don’t touch the soldering pin by
hand or by any conductive material.
ƒ When connecting or disconnecting the connectors on the PCB, hold the whole
housing, don’t pull the wire.
WARNING!!!
¾When Power Up – the outdoor and indoor unit electrical assemblies, including
the wiring, are under HIGH VOLTAGE!!!
¾Never open the outdoor or indoor units before turning off ALL Power sources!!!
¾When turned off, the outdoor unit electrical assembly is still charged (400V)!!!
¾DC capacitors are discharging for about 3 Minute after power is OFF.
¾Touching the electrical before discharging may cause an electrical shock!!!
¾ For safe handling of the electrical assembly please refer to section 13.1 above.
SM DLF 1-A.1 GB
13-1
TROUBLESHOOTING
13.2
General System Failures and Corrective Actions
SYMPTOM /
PROBLEM
No.
PROBABLE
CAUSE
CORRECTIVE ACTION
Indoor unit
No Power supply
Miss-wiring
1.
2.
3.
Indoor unit power supply
indicator (Red LED)
does not light up.
Fuse burned in indoor
unit controller
Indoor unit does not
respond to remote
control message
Check supply voltage to main terminals L and N
with volt meter.
Check all supply wiring to controller and terminals
according to wiring diagram
Loose connection
Check all power wiring connections
Display and
display cable
Check continuity of each wire of the display wires/
pins with Ohm meter
If still not OK
Check if fuse burnt
Short Circuit
between wires
Failure of Indoor
Unit Fan Motor
Check for any cuts or exposed supply wires or
miss-wiring
Check the motor and capacitor (13.5.19)
Check for any cuts or exposed wires
If still not OK
Replace fuse
Remote control
message not
reached the
indoor unit
Check remote control batteries
Check continuity of each wire of the display wires/
pins with Ohm meter
If still not OK
Replace display box or indoor Electronic
Assembly
Problem with
display PCB
Replace display PCB.
If still not OK
Replace indoor Electronic Assembly
Unit in heat mode
and coil is still not
warm
Change to Cool or Fan mode
Failure of Indoor
Unit Fan Motor
Check the motor and capacitor (13.5.19)
Check for any cuts or exposed wires
Problem with
controller or motor
capacitor
Change to high speed and Check power supply to
motor is higher than 220VAC
If still not OK
Replace indoor Electronic Assembly
6.
Indoor fan works
when unit is OFF, and
indoor fan speed is not
changed by remote
control command.
Controller
problem
Replace indoor Electronic Assembly
7.
Water leakage from
indoor unit
Indoor unit
drainage tube is
blocked
Check and open drainage tube
4.
5.
13-2
Indoor unit responds to
remote control message
but Operate indicator
(Green LED) does not
light up
Indoor fan does not start
(louvers are opened and
Green LED is ON)
SM DLF 1-A.1 GB
TROUBLESHOOTING
No.
8.
9.
SYMPTOM /
PROBLEM
One indoor unit or more
are operating in cool
mode with no capacity,
and the other units have
water leaks/freezing
problems
One indoor or more are
operating in heat mode
with a limited capacity,
and the coil on the other
units are very hot.
PROBABLE
CAUSE
CORRECTIVE ACTION
The
communication
wires of the
indoor units are
switched
Check and correct the communication wires
connection
No power supply
Check supply voltage to main terminals L and N
with volt meter.
Miss-wiring
Check all supply wiring to controller and terminals
according to wiring diagram
Loose connection
Check all power wiring connections
Burnt fuse
Check fuse on the main board (13.5.8)
If still not OK
Replace main board (14.1.13)
Outdoor unit
10.
Outdoor unit display
board and LEDs are off
One or some
components are
not operating well
Electronics
control problem or
protection
11.
Compressor does not
start operation
SM DLF 1-A.1 GB
Check for any fault code shown on display board
and act accordingly
PFC Chock coil
Check the PFC Chock coil (13.5.6)
Driver failure
Check if fault code # is shown on display board.
(13.5.5) or
replace driver
If still not OK
Replace compressor
13-3
TROUBLESHOOTING
No.
SYMPTOM /
PROBLEM
PROBABLE
CAUSE
Unit size not
match the load
Check if the size chosen for the complete room(s)
load is enough or need bigger units
Piping size not
matching system
Check if piping is installed correctly and proper
diameter size and total length is according to unit
Refrigerant
leakage
Refrigerant overcharge
12.
Cooling capacity is not
CORRECTIVE ACTION
Check refrigeration system (13.3)
Refrigerant clog
Check and repair clogging specially near the EEV
Electronics
control problem or
protection
Check for any fault code shown on display board
and act accordingly
Compressor
failure
Check if fault code # is shown on display board.
(13.5.10) or
replace driver
Indoor coil block
"
$
Indoor fan
malfunction
Check the motor and capacitor (13.5.19)
Outdoor coil block
Remove block and/or avoid air by-pass
Outdoor fan
malfunction
Check outdoor fan motors (13.5.9)
EEV malfunction
Check EEV (13.5.12)
Thermistor(s)
malfunction
Check if any of fault codes #1-7 is shown on display
board. Replace faulty thermistors (13.5.13)
Check all according to above cooling problem (12)
13.
14.
Heating capacity is not
Compressor is over
heated
Reverse valve
Check reversing valve operation (13.5.11)
Deicing not
performed
well (during
low outdoors
temperatures)
Check OCT and OAT thermistors fault codes (#1
and 4)
Check OCT thermistor if connected well to pipe
Check OAT thermistor if connected well
Check the thermistors operation (13.5.13)
Electronic control
Check for any fault code shown on display board
and act accordingly.
EEV problem
Refrigerant
leakage
Indoor coil block
Indoor fan
malfunction
Outdoor coil block
Outdoor fan
malfunction
Compressor
malfunction
13-4
Check EEV (13.5.12)
Check refrigeration system (13.3)
"
Check indoor fan motor and capacitor (13.5.19)
Remove block and/or avoid air by-pass
Check outdoor fan motors (13.5.9)
Check the compressor (13.5.10)
SM DLF 1-A.1 GB
TROUBLESHOOTING
No.
SYMPTOM /
PROBLEM
PROBABLE
CAUSE
CORRECTIVE ACTION
Check all according to above problem
15.
Compressor stops many
times during operation
Communication
problems
Check if HPS fault code (#8) is accruing
frequently. If so, check the switch operation
(13.5.14)
Check if LPS fault code (#9) is accruing
frequently. If so, check the switch operation
(13.5.15)
Check the communication between outdoor and
indoor units (13.5.17)
RV problem
Check RV operation (13.5.11)
IDU-ODU
communication
Phase order to
compressor is
wrong
Check the communication between outdoor and
indoor units (13.5.17)
HP Switch
LP Switch
16.
Not all units are
operating
17.
Unit is cooling while in
heat mode
18.
Compressor is
generating abnormal
noise
19.
Freezing of outdoor unit
coil in heat mode and
outdoor unit base is
blocked with ice
20.
The unit stop suddenly
during operation
21.
Indoor unit Indicator leds
%
Check compressor phase order
Compressor
internal parts
wearing
Replace compressor
Vibration
Check all piping connections
Check all screws on unit metal chassis are
tightened
Check that no piping is in contact with each other
or with other parts.
Check that no obstructions to outdoor unit coil air
inlet.
Hard conditions of
low temperatures
and high humidity
Check that all holes in bottom of outdoor unit base
are open and clean from dirt.
Check OCT and OAT thermistors
Connect base heater
EMC interference
to the A/C unit
Check for EMC problems (13.5.20.1)
22.
Other home appliances
operation is faulty such
as noise appears in the
television picture, or the
picture is distorted or
static occurs in the radio
sound
EMC interference
by the A/C unit
Check for EMC problems (13.5.20.1)
23.
All others
&
of indoor or
outdoor units
Check for any fault code shown on display board
and act accordingly
SM DLF 1-A.1 GB
13-5
TROUBLESHOOTING
13.3
Checking the refrigeration system
Checking system pressures and other thermodynamic measures should be done when system
'
*+
"
given in this manual are given for unit performance in Technician mode when high indoor fan
speed is selected.
For entering technician mode see 12.7.
13.4
Troubleshooting by Diagnostics Codes
13.4.1
Fault Code for Outdoor Unit
If any fault exists in the system, its fault will be shown according to the following coding method.
The 5 last fault occurred in the system will be stored in the EEPROM.
If no fault exist in the system, no fault code will be displayed during normal operation mode.
STATUS LED is blinking 5 times in 5 seconds, and shut off for the next 5 seconds.
FAULT LED will blink during the same 5 seconds according to the following table
The LED coding method is as follow:
STATUS
13-6
FAULT
SM DLF 1-A.1 GB
TROUBLESHOOTING
No
Problem
AO
5
4
3
2
1
1
2
3
4
5
6
7
8
9
10
OCT is shorted/disconnected
CTT is shorted/disconnected
HST is shorted/disconnected
OAT is shorted/disconnected
OMT is shorted/disconnected
RGT is shorted/disconnected
RLT is shorted/disconnected
High pressure protection
Low pressure protection
No communication to Driver
x Compressor IPM Fault
x IPM Driver Pin
x Compressor Current Sensor Fault
No Water Flow (For Hydro Units only)
Refrigerant Leakage
x DC over voltage
x DC under voltage
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
Yes
0
1
0
1
1
Yes
No
0
0
1
1
1
1
0
0
0
1
Yes
0
1
1
1
0
Yes
0
1
1
1
1
Yes
1
0
0
0
0
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
x
x
x
AC under voltage
AC over Voltage
Zero Crossing detection
x Mismatch between IDU & ODU models
x '<=
x =
<='
No Communication
System Over Power
> PFC Current sensor
> Missing phase
> Phase order mismatch
> PFC Trip (Oveload)
Heat sink Over Heating
Deicing
Compressor Over Heating
Compressor Over Current
No OFAN Feedback (Both OFAN_UP or OFAN_DN)
Yes
Yes
1
1
0
0
0
0
0
1
1
0
Yes
1
0
0
1
1
Yes
No
Yes
Yes
Yes
1
1
1
1
1
0
0
0
0
1
1
1
1
1
0
0
0
1
1
0
0
1
0
1
0
x
x
Yes
1
1
0
0
1
Yes
Yes
No
Yes
1
1
1
1
1
1
1
1
0
0
1
1
1
1
0
0
0
0
1
Yes
1
1
1
1
0
Yes
1
1
1
1
1
OFAN IPM fault
OFAN IPM Driver Pin
Compressor Lock
Indoor Coil defrost
Abnormal system behave
Indoor Sensor fault
x Outdoor Coil Overheating
x Indoor Coil Overheating
Operation conditions are exceeded
1
1 - ON, 0 - OFF
Only one code is shown. Order of priority is lower to the higher number. Diagnostics is continuously
ON as long power is on.
SM DLF 1-A.1 GB
13-7
TROUBLESHOOTING
13.4.2
No
1
2
3
4
5
6
7
Outdoor unit diagnostics and corrective actions
Fault Name
OCT short/disconnect
CTT short/disconnect
HST short/disconnect
OAT short/disconnect
OMT short/disconnect
RGT short/disconnect
RLT short/disconnect
Fault Description
Corrective Action
Thermistor not connected or
damaged
Check Thermistor (13.5.13)
High pressure protection
Normally no action is required
Compressor stopped due to If the problem persists for more than twice
high pressure protection
on each hour, check for refrigerant clog.
Check the switch operation (13.5.14)
9
Low pressure protection
Normally no action is required
Compressor stopped due to If the problem persists for more than twice
low pressure protection
on each hour, check for refrigerant leak.
Check the switch operation (13.5.15)
10
No communication to
Driver
Driver fault
Check power supply to driver
Check driver communication (13.5.16)
Over current / IPM
malfunction
Check no obstruction to electrical box and
outdoor coil air inlet.
Check Compressor (13.5.10)
8
x
11
x
x
Compressor IPM
Fault
IPM Driver Pin
Compressor Current
Sensor Fault
12
No Water Flow (For Hydro
NA
Units only)
NA
13
Refrigerant Leakage
NA
NA
DC voltage exceeds its limit
Check if input voltage out of limit, if not
and the problem persists, replace driver.
If voltage is high/Low, shut off the power
power supply
14
DC Under/over voltage
15
AC under voltage/AC over AC input voltage is lower/
higher than limit
Voltage/Zero Crossing
Check if input voltage is out of limit, if not
and the problem persists, replace driver.
If voltage is High/low, recommend the
Mismatch between IDU &
ODU models
Mismatch between IDU and
ODU models
Indoor unit sizes are exceeding outdoor
unit capacity, check indoor units model
plugs. Either too high or too low capacity
indoor units
Missing ODU
=
<='
ODU dip switches are not
Check ODU dip switch setting if correct
16
17
No Communication to IDU IDU-ODU communication
Check communication between indoor
and outdoor units (13.5.17)
18
System Over Power
-
13-8
Protection – not available
SM DLF 1-A.1 GB
TROUBLESHOOTING
No
Fault Name
PFC Current sensor
Missing phase
Phase order mismatch
Fault Description
Driver fault
Installation incorrect
19
20
Corrective Action
Replace Compressor Driver
Check power supply lines
Switch between 2 supply lines
Can occur during high current conditions.
If problem persists,
Check power supply to driver.
Check driver communication (13.5.16).
Check no obstruction to electrical box and
outdoor coil air inlet.
PFC Trip (Overload)
Protection of driver
Heat sink Over Heating
%
<=
free and the fan is running free
Compressor stopped due to
Check the screws connecting the driver to
heat sink protection
heat sink are tighten
Check outdoor fan motors. (13.5.9)
During deicing procedure
Normally no action is required
If the problem persists for more than twice
on each hour, check for refrigerant leak
and thermodynamic operation (13.3)
21
Deicing
22
Normally no action is required
Compressor stopped due to If the problem persists for more than twice
Compressor Over Heating
over heat protection
on each hour, check for refrigerant leak
and thermodynamic operation (13.3)
23
Normally no action is required
Compressor stopped due to If the problem persists for more than twice
Compressor Over Current
over current protection
on each hour, check for refrigerant leak or
clog and thermodynamic operation (13.3)
24
No OFAN Feedback
(Both OFAN_UP or
OFAN_DN)
Outdoor fan(s) does not
rotate
Check no obstruction to outdoor unit coil
air path
Check OFAN motor (13.5.9)
25
OFAN IPM fault / OFAN
IPM Driver Pin
Not available
-
26
Compressor Lock
Compressor does not rotate
Check Compressor (13.5.10)
Check driver (13.5.5)
27
Indoor Coil defrost
Indoor coil is freezing protection
Normally no action is required
If the problem persists for more than twice
on each hour.
Check refrigerant leakage – add refrigerant
if required according pressure charts on
section 5.
Check ICT sensor – replace if required
Check IFAN motor and capacitor (13.5.19)
28
Abnormal
29
Indoor Sensor fault
30
Outdoor/Indoor Coil
Overheating
SM DLF 1-A.1 GB
Compressor cannot start
Reset power and check again after 5 min.
properly.
If happens again, replace driver.
Thermistor not connected or
Check Thermistor (13.5.13)
damaged
Normally no action is required
Compressor stopped due to If the problem persists for more than twice
over pressure protection
on each hour, check for refrigerant clog
and thermodynamic operation (13.3)
13-9
TROUBLESHOOTING
No
31
Fault Name
Operation conditions are
exceeded
Fault Description
System is performing out
of its outdoor condition
limitations:
Cooling: >46°C , <-11°C.
Heating: >30°C , <-18°C.
Indication only, no action.
Corrective Action
Check if indeed the conditions are
exceeded. If not, check OAT thermistor, if
OK, check no obstructions to outdoor air
path.
13.4.3
Fault Code for Indoor unit
Note: Indoor unit diagnostics can be viewed by the outdoor unit display board (13.4).
The below procedure is for viewing the indoor unit codes via the indoor unit led display.
Pressing Mode button for more than 5 seconds will activate diagnostic mode by the acknowledgment
of 3 short beeps and lighting of COOL and HEAT LED’s.
When Indoor diagnostics is displayed, all four LED’s (STBY, Operate, Filter, TMR) are on.
Entering diagnostics in STBY mode allows only viewing of status (fault-display).
In diagnostic mode, system problems / information will be indicated by blinking of Heat & Cool LED’s.
The coding method will be as follows:
Heat led will blink 5 times in 5 seconds, and then will be shut off for the next 5 seconds. Cool Led will
blink during the same 5 seconds according to the following table:
No
1
2
3
4
5
6
7
8
9
10
11
…
17
18
19
20
21
…
24
25
26
27
28
29
30
31
Fault Name
ICT is disconnected
ICT is shorted
RAT is disconnected
is shorted
Reserved
ICTE Shorted/Disconnected
=
=J'
No Communication
No Encoder
Reserved
Outdoor Unit Fault
Reserved
Defrost protection
Deicing Protection
Outdoor Unit Protection
Indoor Coil HP Protection
<"
%Q
Reserved
EEPROM Not Updated
Bad EEPROM
Bad Communication
Using EEPROM data
Model A
Model B
Model C
Model D
5
0
0
0
0
0
0
0
0
0
0
0
4
0
0
0
0
0
0
0
1
1
1
1
3
0
0
0
1
1
1
1
0
0
0
0
2
0
1
1
0
0
1
1
0
0
1
1
1
1
0
1
0
1
0
1
0
1
0
0
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
0
1
1
0
0
1
0
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1 - ON, 0 - OFF
Only one code is shown. Order of priority is lower to the higher number. Diagnostics is continuously
ON as long power is on.
13-10
SM DLF 1-A.1 GB
TROUBLESHOOTING
13.4.4
No.
Indoor unit diagnostics and corrective actions
Fault
Probable Cause
Corrective Action
1-4,
6
Sensor failures
Sensors not
connected or
damaged
Check Thermistor (13.5.13)
7
=
=
Family/Model
IDU is not a valid
model or family
=X
8
No Communication
IDU-ODU
communication
Check communication between indoor
and outdoor units (13.5.17)
Indoor electronics or
motor
Check motor wiring, if OK, replace motor
If still not ok
Replace Indoor electronic assembly
(14.2.2)
Outdoor controller
problem
Check for any fault code shown on
outdoor unit display board and act
accordingly (13.4)
Indication
No action
Compressor stopped
due to outdoor unit
protection
Normally no action is required
If the problem persists for more than
twice on each hour, Check for any fault
code shown on outdoor unit display board
and act accordingly (13.4)
Check the EEV (13.5.12)
Check the Outdoor fans (13.5.9)
Check the Indoor fans (13.5.19)
Check the Compressor (13.5.10)
Check the CTT Thermistor (13.5.13)
Compressor stopped
due to high pressure
(heating) protection
Normally no action is required
If the problem persists for more than
twice on each hour, check for refrigerant
leak and thermodynamic operation (13.3)
Check the EEV (13.5.12)
Check the Outdoor fans (13.5.9)
Check the Indoor fans (13.5.19)
Check the Compressor (13.5.10)
Check the CTT Thermistor (13.5.13)
Compressor stopped
due to water level
"
%
Check the drainage tube for any clog.
%
needed.
It is highly recommended to install a
siphon into the unit drainage point.
9
11
No Encoder
Outdoor Unit Fault
17-18 Protections
19
20
21
Outdoor Unit
Protection
Indoor Coil HP
Protection
<"
%Q
SM DLF 1-A.1 GB
13-11
TROUBLESHOOTING
No.
Fault
Probable Cause
System is using
ROM parameters
and not EEPROM
parameters
24
EEPROM Not
Updated
25
Bad EEPROM
26
Bad Communication
IDU-ODU
communication
27
Using EEPROM
data
No problem
28
29
IDU model
30
31
13-12
Corrective Action
No action, unless special parameters are
required for unit operation.
No action, unless special parameters are
required for unit operation.
Indoor unit model
connected is shown:
Model A - 4HP unit
Indoor unit model
connected is shown:
Model B - 5HP unit
Indoor unit model
connected is shown:
Model C - 6HP unit
Check communication between indoor
and outdoor units (13.5.17)
No problem
Not applicable
SM DLF 1-A.1 GB
TROUBLESHOOTING
13.5
Procedures for checking Main Parts
13.5.1
Discharge DC Voltage
High voltage!!!
Wait for DC voltage to be discharged before
re touching any part of the driver to
avoid electric shock.
Check to ensure that DC voltage has reduced to below 50VDC, if not, keep
waiting until it does.
13.5.2
Checking Mains Voltage
'"
*'"
the system is expected. If in range, check the Power (Circuit) Breaker and look for broken or loosed
cable lugs or wiring mistakes.
13.5.3
Checking Line Filter Board
[\ *
]\ "
*"
*
^\ `
both and driver.
j
${14.1.16)
13.5.4
13.5.4.1
Checking Compressor Driver
YBD 018-024
In normal operation the 7-segments display is ON continuously. Even is that case, there can still be
a Hardware problem that prevents the system to perform well or at all. If no other problem is found,
replace the driver.
ΠCheck power supply to driver connected well and no burn marks on wiring.
ΠPFC chock is connected well. Correct if needed.
ΠCheck PFC Chock (13.5.4.3). Replace chock if needed.
ΠCheck main fuse (20A). In case fuse is burnt, replace driver.
If all is well but still leds are OFF, Replace driver.
SM DLF 1-A.1 GB
13-13
TROUBLESHOOTING
13.5.5
Checking PFC Chock coil
1)
2)
3)
Check PFC chock connections – repair if needed.
Visually check to see any burn marks on the wires – replace the chock(s) if needed.
Disconnect the chock from the driver and check if the 2 ending wires of each chock are shorted
(continuity check) – if they are NOT shorted replace the chock(s), if they are shorted – check the
driver (13.5.4).
Replacing PFC chock - (14.1.17)
13.5.6
Checking DC Capacitors
1)
Check visually for burn marks on the capacitor PCB and the capacitors for swelling casing –
replace if needed.
2) When power is ON - Check that red led is ON, if not check voltage between + and - poles to be
according table:
Unit
3)
Voltage
GC036-43 / INV40-50
380±50VDC
YAD036-42-60-H13 / INV40T/50T/60T
560±50VDC
YBD042-60-H11
310±50VDC
When power is OFF - Check capacitance between + and – poles, should be according table :
Unit
Capacitance
GC036-43 / INV40-50
2820±560μF
YAD036-42-60-H13 / INV40T/50T/60T
1360±270μF
YBD042-60-H11
3360±670μF
Replacing driver - (14.1.18)
13.5.7
Checking fuse on Main Board
If the 3.15A fuse on the main Board is burnt check the outdoor fans or any other peripheral that can
cause a short:
1) In case of a problematic peripheral - replace it.
2) In case no problematic peripheral replace the burnt fuse.
3) In case of frequent burning fuse, replace the controller.
Replacing main board - (14.1.13)
13.5.8
Checking Outdoor Fan Motor
13.5.8.1. YBD018-027
Check motor capacitor.
Check voltage to motor, should be 230-130VAC. If voltage is not in range, replace the motor.
Check that OMT sensor reading is OK.
If motor is Ok, replace the controller.
SM DLF 1-A.1 GB
13-14
TROUBLESHOOTING
13.5.9
1)
2)
Checking Compressor
Check Compressor connections - Repair if needed.
Check the resistance between the three phases – all three coil resistances should be the same:
UNIT
RESISTANCE
YBD036 - H11 / INV38
INV40-50 / YBD042-060 - H11
YAD036-042-060 - H13
YBD030
YBD018-024
3)
Check the compressor current while operating to be the same on each wire - In case of abnormal
current (no current or excessive current), the problem could be of driver or compressor – if driver
is checked to be operating well (13.5.5), replace the compressor.
COMPESSOR
8
:
9
3) Check Compressor motor current
Replacing compressor- (14.1.11)
SM DLF 1-A.1 GB
13-15
TROUBLESHOOTING
13.5.10
Checking Reverse Valve (RV)
The RV has two parts, Solenoid and valve.
1) Disconnect the RV connector from the main board and operate the unit in heating mode, check
the voltage between two pins of reverse valve connector on the controller, normal voltage is
230VAC - if no power supply to RV, replace outdoor main board.
2) Check RV operation with direct 230VAC power supply. If RV solenoid is OK (but still no heating
operation while compressor is ON), replace the RV valve from the refrigeration system.if not,
replace the RV coil.
Replacing RV Coil (14.1.7)
Replacing RV Valve - (14.1.10)
Replacing main board - (14.1.13)
13.5.11
Checking Electrical Expansion Valve (EEV)
The EEV has two parts, step motor and valve. Use additional set of valve and coil to check the
system.
1) Check the impedance in the coil wires to be as following:
€
`[‚
<
`
{
\`|‚
2) When Outdoor unit is powered on, EEV shall have vibration and click sound. If not, replace the
coil with the additional one and check again – turn OFF the unit and than turn it ON, vibration
and click sound should be performed. If OK, the coil was damaged and require to be replaced.
3) Turn OFF the unit, insert a good coil onto an additional operating valve and turn the unit ON,
vibration and click sound should be performed. If OK, replace EEV valve from the unit.
4) If both EEV coil and valve are still not operating, replace the ODU main board.
Replacing EEV Valve Coil - (14.1.9)
Replacing EEV Valve - (14.1.9)
Replacing main board - (14.1.13)
13.5.12
1)
2)
3)
4)
5)
Checking Thermistors
Check Thermistor connections and wiring - Replace if needed.
Check sensor visually - Replace if needed.
Check thermistor sensor attachment to pipe (or other parts), specially pay attention to the spring
holding the sensor towards its sensing part – repair if needed.
Disconnect the connector from the main board and check Thermistor resistance – should be
according the charts below for each sensor. If not in range of 10%, replace thermistor.
If thermistor resistance check is OK but reading is still wrong, replace main board.
13-16
SM DLF 1-A.1 GB
TROUBLESHOOTING
CTT (YBDE018-024), OAT, OCT, OMT, ICT, RAT, HST Chart
R-T Table
R25°C=10k:
‡25/85°C=39K
1000.0
Resistance [kOhm]
100.0
10.0
1.0
0.1
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
Temperature [C]
SM DLF 1-A.1 GB
13-17
TROUBLESHOOTING
13.5.13
Checking High Pressure Switch (HPS)
1) Disconnect HPS connector from the main board and check resistance between the 2 pins of the
HPS connector – if shorted the HPS is OK, otherwise replace HPS.
Replacing HPS - (14.1.10)
13.5.14
Checking Low Pressure Switch (LPS)
1) Disconnect LPS connector from the main board and check resistance between the 2 pins of the
HPS connector – if shorted the LPS is OK otherwise replace LPS.
Replacing LPS - (14.1.9)
13.5.15
Checking Compressor Driver Communications
1)
Disconnect the wire cable from the connectors on both sides (driver and main board), check
the wiring continuity – Repair or replace wiring if needed.
2) Turn power ON and check if the red led in the driver is lighted. If OK and still no
communications, replace main board. If the led is OFF, replace driver.
Replacing Outdoor Unit main board - (14.1.13)
Replacing driver - (14.1.15)
13-18
SM DLF 1-A.1 GB
TROUBLESHOOTING
13.5.16.2 YBD 018-030
1) Check voltage on the interconnection wiring – should be 22VDC±1VDC. If not:
2) Disconnect the wire cable from the connector on the IDU main board side and Check voltage
on the IDU terminals “N” and “C” – should be 43VDC±1VDC. If not, replace IDU controller. If it is
43VDC:
3) Connect back the wires to the IDU side and disconnect at ODU side. Check voltage on the
interconnection wiring – should be 43VDC±1VDC. If not, replace wiring. If it is 43VDC replace
Outdoor unit controller.
SM DLF 1-A.1 GB
13-19
TROUBLESHOOTING
13.5.17
Checking Indoor Unit Fuse on Controller
If the 3.15A fuse on the main Board is burnt check the fan or any other peripheral that can cause a
short:
1) In case of a problematic peripheral - replace it.
2) In case no problematic peripheral replace the burnt fuse.
3) In case of frequent burning fuse, replace the controller.
13.5.18
1)
2)
3)
4)
Checking Indoor Unit Fan Motor
Check the motor wiring from the controller.
Check the motor capacitor for capacitance according to the capacitor name plate.
Check the resistance between each coil of the motor to be within normal range (30-300:).
Check resistance between each wire to ground to be above 5:.
13.5.19
Checking for electromagnetic interference (EMC problems)
13.5.19.1 EMC interference to the A/C unit
Locations most susceptible to interference
1) Locations near broadcast stations where there are strong electromagnetic waves.
2) Locations near amateur radio (short wave) stations.
3) Locations near electronic sewing machines and arc-welding machines.
Problem:
1) The unit may stop suddenly during operation.
]\ %
Correction Actions:
The fundamental concept is to make the system less susceptible to noise by Insulation for noise or
distance from the noise source.
1) Use shielded wires.
2) Move unit away from the noise source.
13.5.19.2 EMC interference to near by home appliances
Locations most susceptible to interference:
1) A television or radio is located near the A/C and A/C wiring.
2) The antenna cable for a television or radio is located close to the A/C and A/C wiring.
3) Locations where television and radio signals are weak.
Problem:
1) Noise appears in the television picture, or the picture is distorted.
2) Static occurs in the radio sound.
Correction Actions:
1) Select a separate power source.
2) Keep the A/C and A/C wiring at least 1 meter away from wireless devices and antenna
cables.
3) Change the wireless device’s antenna to a high sensitivity antenna.
4) Change the antenna cable to a BS coaxial cable.
|\ =
{
"
\*
6) Use a signal booster.
13-20
SM DLF 1-A.1 GB
EXPLODED VIEWS AND SPARE PARTS LISTS
EXPLODED VIEWS AND SPARE PARTS LISTS
14.1
Indoor Unit: DLF 18
G
F
8
E
SM DLF 1-A.1 GB
7a
D
16
D
D
E
D
E
14.
14-1
EXPLODED VIEWS AND SPARE PARTS LISTS
14.2
14-2
Indoor Unit: DLF 18 DCI
SM DLF 1-A.1 GB
EXPLODED VIEWS AND SPARE PARTS LISTS
14.3
Outdoor Units: YBDE 018-H11 - Exploded View
14.3.1
Outdoor Unit General Assembly
65
7
10
11
71
1
31
18
12
5
4
23
9
46
47
3
8
14
13
2
6
14-3
SM DLF 1-A.1 GB
EXPLODED VIEWS AND SPARE PARTS LISTS
14.3.2
Outdoor Unit Parts Assembly
53
33
43b
50
70
19
52
43a
51
31
43
14
33
21
50
16
42
17
39
69
14-4
SM DLF 1-A.1 GB
EXPLODED VIEWS AND SPARE PARTS LISTS
14.3.3
Outdoor Unit: YBDE 018-H11 Spare Part List
No.
PN
71
253054
416320
416910
416910
417000
425713
426630
426631
426632
426634
426641
426678
426690
426705
426793
426798
426903
433281
436357
436358
437045
439342
439357
4399281
442007
4529604
460170013R
467400040
467400078
467400200
467420025
474239
455879
426662
417200
9
65
65
5
50
43
43a
43b
13
2
7
17
31
21
46
70
10
3
11
1
12
4
23
18
8
14
19
51
52
47
69
39
42
6
14-5
Description
Supply Cord Clamp
Motor 70W,2S,OU7 DCI
Cable Holder
Cable Holder
OU Square Fan Guard
EEV Coil (C) QA (Q) 12-YLT-07-RK
Compressor Internal Insulation
Compressor External Insulation
Compressor Top Insulation OU7
Compressor Base Plate OU7-22-30 DCI
Side Panel OU7 DCI
Coil OU7-22 DCI Eco Export As
Tubing Assembly OU7-22 DCI
Controller Assy OU7 DCI
Compressor Wiring
PFC Chock (1PH/DCI50)
Terminal Cover Compressor GMCC
Side Guard OU7-24
Small Electrical Cover OU
OU Leading Handle
Upper Cover EL13 OU Large
Motor Support OU7
Front Cover OU7
Outlet Plastic Ring OU7/8/12
Capacitor 6mF 450V/P2
Axial Fan D493*143
Compressor DA150S1C-20FZ
OMT/OAT Thermistor with connector
OCT-Thermistor+CAP With Connector
CTT-Thermistor With Connector
Terminal Block 4P
Liquid Valve Assemby OU12-50
Service Valve 1/4"F
EEV Assy OUI7-22 DCI
Base Assembly
Qty
2
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
SM DLF 1-A.1 GB
EXPLODED VIEWS AND SPARE PARTS LISTS
Indoor Unit: DLF 24 DCI EXPLODED VIEWS AND SPARE PARTS LISTS
14.4
15.1
Indoor Unit: DLF 18
G
D
D
E
D
F
F
E
SM DLF 1-A.1 GB
SM DLF 1-A.1 GB
7a
8
E
E
D
D
16
D
D
D
G E
E
EXPLODED VIEWS AND SPARE PARTS LISTS
15.
15-1
CONTENT
14-6
EXPLODED VIEWS AND SPARE PARTS LISTS
14.5
Indoor Unit: DLF 24 DCI
SM DLF 1-A.1 GB
14-7
EXPLODED VIEWS AND SPARE PARTS LISTS
14.6
Outdoor Unit: YBDE 024-H11 - Exploded View
14.6.1
Outdoor Unit General Assembly
65
7
10
11
1
71
45
18
12
5
4
23
9
46
47
3
8
14
22
13
2
6
SM DLF 1-A.1 GB
14-8
EXPLODED VIEWS AND SPARE PARTS LISTS
14.6.2
Outdoor Unit Parts Assembly
53
33
43b
50
70
19
52
43a
51
31
43
14
33
21
50
16
42
17
39
69
14-9
SM DLF 1-A.1 GB
EXPLODED VIEWS AND SPARE PARTS LISTS
14.6.3
Outdoor Unit: YBDE 024-H11 - Spare Part List
No.
PN
71
253054
402283
416320
416910
416910
417000
425713
426630
426631
426632
426634
426641
426686
426680
426705
426793
426794
426798
426903
433281
436357
436358
437045
439342
439357
4399281
442007
4529604
460170013R
467400040
467400078
467400200
467420025
426589
455877
426665
417200
22
9
65
65
5
50
43
43a
43b
13
2
7
17
31
21
53
46
70
10
3
11
1
12
4
23
18
8
14
19
51
52
47
69
39
42
6
SM DLF 1-A.1 GB
Description
Supply Cord Clamp
Suction Accumulator 3"x5/8"
Motor 70W,2S,OU7 DCI
Cable Holder
Cable Holder
OU Square Fan Guard
EEV Coil (C) QA (Q) 12-YLT-07-RK
Compressor Internal Insulation
Compressor External Insulation
Compressor Top Insulation OU7
Compressor Base Plate OU7-22-30 DCI
Side Panel OU7 DCI
Coil OU7-30 DCI Eco
Tubing Assembly OU7-30 DCI
Controller Assy OU7 DCI
Compressor Wiring
OU7 DCI Motor Wiring
PFC Chock (1PH/DCI50)
Terminal Cover Compressor GMCC
Side Guard OU7-24
Small Electrical Cover OU
OU Leading Handle
Upper Cover EL13 OU Large
Motor Support OU7
Front Cover OU7
Outlet Plastic Ring OU7/8/12
Capacitor 6mF 450V/P2
Axial Fan D493*143
Compressor DA150S1C-20FZ
OMT/OAT Thermistor with connector
OCT-Thermistor+CAP With Connector
CTT-Thermistor With Connector
Terminal Block 4P
Nipple 3/8" Assy OU8 DCI
Service Valve 5/8"F 3 Way
EEV Assy OU7-30 DCI
Base Assembly
Qty
2
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
14-10
OPTIONAL ACCESSORIES
15.
OPTIONAL ACCESSORIES
15.1
Base
Heater
Before starting the heaters connection verify that the unit is
disconnected from main power supply!!
BASE HEATERT INSTALLATION INSTRUCTIONS
Instructions:
1. Open the outdoor unit electrical cover and service panel.
2. Connect the base heater wires to connections marked as “BH” on the main controller (refer to
Figure 1).
3. Route the wires into the cable holders and through the grommet and attach the wires with
strips to other wires as per Figure 1 & 2.
4. Locate the heater under the outdoor base.
5. Close the outdoor electrical cover and service panel.
Install off-shelf heater up to 70Watts
Figure 1
SM DLF 1-A.1 GB
Figure 2
15-1
OPTIONAL ACCESSORIES
15.2
Crank Case Heater
Before starting the heaters connection verify that the unit is
disconnected from main power supply!!
CRANK CASE HEATERS INSTALLATION INSTRUCTIONS
Instructions:
1. Open the outdoor unit electrical cover and service panel.
2. Remove the compressor insulation layers.
3. Locate the heater around the compressor and close with the
spring according to Figure 1.
4. Route the wires into the cable holders as per Figure 2.
5. Connect the heater wires to connections marked as “CCH”
on the main controller (refer to Figure 3).
6. Attach the wires with strips to other wires as per Figure 3.
7. Put back the compressor insulation layers.
8. Close the outdoor electrical cover and service panel.
Figure 1
15-2
Figure 3
Figure 2
SM DLF 1-A.1 GB
APPENDIX A
APPENDIX A
INSTALLATION AND OPERATION MANUALS
SM DLF 1-A.1 GB
£
INFRARED REMOTE CONTROL RECEIVER
£
OPERATION MANUAL RC-8
16-1
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