Electra WNG 25 DCI Series Service Manual

WNG 25 / 35 DCI Series

CONTENTS

Indoor Units Outdoor Units

WNG 25 DCI ONG 25 DCI
WNG 35 DCI ONG 35 DCI

SM WNGDCI 1-E.1 GB

REFRIGERANT

R410A

NOVEMBER – 2008

HEAT PUMP

LIST OF EFFECTIVE PAGES

CONTENTS

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 ........ March 2006

Total number of pages in this publication is 76 consisting of the following:

Page
No.

Title ....................... 1

A ........................... 1

i ............................. 1

1-1 - 1-4 ................ 1

2-1 - 2-3 ................ 1

3-1 ........................ 1

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Appendix -A ...........1

Revision
No. #

Page
No.

Revision
No. #

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No.

Revision
No. #

● Zero in this column indicates an original page.

*Due to constant improvements please note that the data on this service manual can be modified
with out notice.
**Photos are not contractual

A

SM WNGDCI 1-E.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 ........................................................................................5-1

6. PRESSURE CURVES ...........................................................................................6-1

7. ELECTRICAL DATA ..............................................................................................7-1

8. WIRING DIAGRAMS .............................................................................................8-1

9. REFRIGERATION DIAGRAMS .............................................................................9-1

10. TUBING CONNECTIONS ......................................................................................10-1

11. CONTROL SYSTEM .............................................................................................11-1

12. TROUBLESHOOTING ..........................................................................................12-1

13. EXPLODED VIEWS AND SPARE PARTS LISTS .................................................13-1

14. APPENDIX A .........................................................................................................14-1

SM WNGDCI 1-E.1 GB

i

1. INTRODUCTION

CONTENTS

1.1 General

The new WNG DCI split wall mounted range has expanded, comprising two additional
RC (heat pump) models:

● WNG 25 DCI

● WNG 35 DCI

The indoor WNG units are available as LED or LCD display types featuring esthetic
design, compact dimensions, and low noise operation.

1.2 Main Features

The WNG DCI INV series benefits from the most advanced technological innovations,
namely:

● DC inverter technology.

INTRODUCTION

● R410A.

● High COP.

● Lego concept.

● Pre-Charged units up to the max’ allowing tubing distance.

● Networking system connectivity.

● A dry contact for clock or power shedding functions (configurable).

● Base heater connection.

● Cooling operation at outdoor temperature down to -10°C.

● Heating operation at outdoor temperature down to -15°C.

● Supports Indoor Air Quality features, such as – Ionizer, Active Electrostatic

Filter.

● Indoor large diameter cross flow fan, allowing low noise level operation.

● Bended indoor coil with treated aluminum fins and coating for improved

efficiency.

● Easy access to the interconnecting tubing and wiring connections, so that

removing the front grill or casing is not necessary.

● Refrigerant pipes can be connected to the indoor unit from 5 different optional

directions.

SM WNGDCI 1-E.1 GB

● Water condensate tray is equipped with two optional drain connections.

● Automatic treated air sweep.

● Low indoor and outdoor noise levels.

● Easy installation and service.

1-1

INTRODUCTION

CONTENTS

1.3 Indoor Unit

The indoor unit is wall mounted, and can be easily fitted to many types of residential
and commercials applications.

● WNG 25, 35

New design is available in LCD and LED versions.
Old design is available in LED version only.

Indoor Unit features:

Feature WNG 25, 35

Display LCD or LED

Ionizer YES

ESF YES

Fresh air Optional

Indoor fan motor Variable speed (PG)

Horizontal motorized louver YES

Vertical motorized louver Optional

Heating element NO

M2L Cable port YES

Dry contact

1.4 Filtration

The WNG DCI Series presents several types of air filters:

● Easily accessible, and re-usable pre-filters (mesh)

● Pre-charged electrostatic filter (disposable)

● Active carbon filter (disposable)

● ESF. Active Electro Static re-usable filter (optional)

1.5 Ionizer (Optional)

A special design Ionizer protected by unique patents integrated into the indoor unit,
generating negative ions to the room providing comfort and upgraded indoor air quality.

Presence detector or (jumper selected)

power shedding

1-2

SM WNGDCI 1-E.1 GB

1.6 Control

CONTENTS

The microprocessor indoor controller, and an infrared remote control, supplied as
standard, provide complete operating function and programming.
Remote controllers: RC-2/3/4/5/7, RC-4i-1, RCW, μBMS.
Networking system Airconet version 4.2 and up, MIU SW version H8 and up.
For further details please refer to the Operational Manual, Appendix A.

1.7 Outdoor Unit

The WNG DCI INV / LEX DCI INV outdoor units can be installed as floor or wall
mounted units by using a wall supporting bracket. The metal sheets are protected
by anti- corrosion paint work allowing long life resistance. All outdoor units are pre­charged. For further information please refer to the Product Data Sheet, Chapter 2.

● ONG 25 DCI

● ONG 35 DCI

Outdoor Unit Feature

INTRODUCTION

Feature ONG 25, 35 DCI

Display 3 LED’s

Base Heater Optional
Outdoor Fan Variable speed DC Inverter

M2L cable Port No

1.8 Tubing Connections

Flare type interconnecting tubing to be produced on site.
For further details please refer to the Installation Manual, Chapter 9.

1.9 Accessories

Item Description

MIU (WNG) MODBUS interface unit

MIU (K) MODBUS interface unit

RS485 Adapter

Base Heater

To be used as an interface

with RCW or μBMS remote

controllers

1.10 Inbox Documentation

SM WNGDCI 1-E.1 GB

M2L cable Port

For further details please refer to Optional Accessories, Chapter 17.

Each unit is supplied with its own installation and operation manuals.

1-3

INTRODUCTION

CONTENTS

1.11 Matching Table

1.11.1 R410A

OUTDOOR UNITS

MODEL REFR WNG25 DCI WNG35 DCI K25 DCI K35 DCI

INDOOR UNITS

ONG25 DCI R410A

ONG35 DCI R410A

The above table lists outdoor units and WNG indoor units which can be matched together. In
addition the listed outdoor units can be matched with other types of indoor units such as
cassettes.

For further information please refer to the relevant Service Manual.

√√

√√

1-4

SM WNGDCI 1-E.1 GB

PRODUCT DATA SHEET

CONTENTS

2. PRODUCT DATA SHEET

2.1 WNG 25 DCI

Model Indoor Unit WNG 25 DCI
Model Outdoor Unit DCI 25 R410A

Installation Method of Pipe Flared

Characteristics Units Cooling Heating

Capacity (4)
Power input (4) kW 0.595(0.42-1.0) 0.81(0.39-1.6)

EER (Cooling) or COP(Heating) (4) W/W 4.20 4.20
Energy efficiency class A A

Power supply

Rated current A 2.7 3.8
Power factor 0.97 0.97
Prated (IDU) W 32
Prated (IDU+ODU) W 1600
Starting current A 10.5
Circuit breaker rating A 15

Fan type & quantity Crossflow x 1
Fan speeds H/M/L RPM 1050/900/800
Air flow (1) H/M/L m3/hr 530/430/330
External static pressure Min Pa 0
Sound power level (2) H/M/L dB(A) 51/ - /39
Sound pressure level(3) H/M/L dB(A) 39/ - /26
Moisture removal l/hr 1
Condenstate drain tube I.D mm 16

INDOOR

Dimensions WxHxD mm 810x285x190
Net Weight kg 10.5
Package dimensions WxHxD mm 870x356x282
Packaged weight kg 13.5
Units per pallet units 28
Stacking height units 7evels
Refrigerant control Electronical Expansion Valve
Compressor type,model Single Rotary DC Inverter,Panasonic 5RS102XAB
Fan type & quantity Propeller x 1
Fan speeds H RPM 830
Air flow H m3/hr 1780
Sound power level H dB(A) 61
Sound pressure level(3) H dB(A) 51
Dimensions WxHxD mm 795x610x290
Net Weight kg 38
Package dimensions WxHxD mm 970x650x394
Packaged weight kg 42
Units per pallet Units 9

OUTDOOR

Stacking height units 3 levels
Refrigerant type R410A
Standard charge kg(7.5m) 1.1
Additional charge No need

Liquid line In.(mm) 1/4"(6.35)
Suction line In.(mm) 3/8"(9.53)

Connections between units

Operation control type Remote control
Heating elements (Option) kW
Others

Max.tubing length m. Max.20
Max.height
difference

Btu/hr 8530(4780-12280) 11600(5120-17060)

kW 2.5(1.4-3.6) 3.4(1.5-5.0)

V 220-240
Ph 1
Hz 50

m. Max.10

(1)Airflow in ducted units;at nominal external static pressure.
(2)Sound power in ducted units is measured at air discharge.
(3)Sound pressure level measured at 1-meter distance from unit.
(4)Rating conditions in accordance to ISO 5151 and ISO 13253 (for ducted units).

SM WNGDCI 1-E.1 GB

2-1

PRODUCT DATA SHEET

CONTENTS

2.2 WNG 35 DCI

Model Indoor Unit WNG 35 DCI
Model Outdoor Unit DCI 35 R410A

Installation Method of Pipe Flared

Characteristics Units Cooling Heating

Capacity (4)

Power input (4) kW 0.99(0.42-1.25) 1.125(0.39-1.75)
EER (Cooling) or COP(Heating) (4) W/W 3.54 3.82
Energy efficiency class A A

Power supply

Rated current A 4.6 5.2
Power factor 0.97 0.97
Prated (IDU) W 40
Prated (IDU+ODU) W 1800
Starting current A 10.5
Circuit breaker rating A 15

Fan type & quantity Crossflow x 1
Fan speeds H/M/L RPM 1100/950/800
Air flow (1) H/M/L m3/hr 550/450/350
External static pressure Min Pa 0
Sound power level (2) H/M/L dB(A) 52/ - /39
Sound pressure level(3) H/M/L dB(A) 40/ - /26
Moisture removal l/hr 1.5
Condenstate drain tube I.D mm 16

INDOOR

Dimensions WxHxD mm 810x285x190
Net Weight kg 10.5
Package dimensions WxHxD mm 870x356x282
Packaged weight kg 13.5
Units per pallet units 28
Stacking height units 7levels
Refrigerant control Electronical Expansion Valve
Compressor type,model Single Rotary DC Inverter,Panasonic 5RS102XAB
Fan type & quantity Propeller x 1
Fan speeds H RPM 830
Air flow H m3/hr 1780
Sound power level H dB(A) 62
Sound pressure level(3) H dB(A) 52
Dimensions WxHxD mm 795x610x290
Net Weight kg 38.5
Package dimensions WxHxD mm 970x650x394
Packaged weight kg 42.5
Units per pallet Units 9

OUTDOOR

Stacking height units 3 levels
Refrigerant type R410A
Standard charge kg(7.5m) 1.2
Additional charge No need

Liquid line In.(mm) 1/4"(6.35)
Suction line In.(mm) 3/8"(9.53)

Connections between units

Operation control type Remote control
Heating elements (Option) kW
Others

Max.tubing length m. Max.20
Max.height
difference

Btu/hr 11940(4780-14670) 14670(5100-19790)

kW 3.5(1.4-4.3) 4.3(1.5-5.8)

V 220-240

Ph 1
Hz 50

m. Max.10

1)Airflow in ducted units;at nominal external static pressure.
(2)Sound power in ducted units is measured at air discharge.
(3)Sound pressure level measured at 1-meter distance from unit.
(4)Rating conditions in accordance to ISO 5151 and ISO 13253 (for ducted units).

2-2

SM WNGDCI 1-E.1 GB

3. RATING CONDITIONS

CONTENTS

Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units).

Cooling:

Indoor: 27oC DB 19oC WB
Outdoor: 35 oC DB

Heating:

Indoor: 20oC DB
Outdoor: 7oC DB 6oC WB

3.1 Operating Limits

3.1.1 R410A

RATING CONDITIONS

Cooling

Heating

Upper limit
Lower limit
Upper limit
Lower limit

Voltage

Indoor Outdoor

32oC DB 23oC WB 46oC DB

21oC DB 15oC WB -10oC DB

27oC DB 24oC DB 18oC WB

10oC DB -15oC DB -16oC WB

198 – 264 V

SM WNGDCI 1-E.1 GB

3-1

4. OUTLINE DIMENSIONS

CONTENTS

4.1 Indoor Unit: WNG 25, 35 DCI

OUTLINE DIMENSIONS

4.2

Outdoor Unit: ONG 25,35 DCI

SM WNGDCI 1-E.1 GB

4-1

5. PERFORMANCE DATA

CONTENTS

5.1 WNG 25 DCI

5.1.1 Cooling Capacity (kW) - Run Mode

ID COIL ENTERING AIR DB/WB TEMPERATURE [ºC]

OD COIL

ENTERING AIR DB

TEMPERATURE

[C

0

]

-10 - 20

(protection range)

25

30

35

40

46

DATA 22/15 24/17 27/19 29/21 32/23

TC
SC

PI
TC 2.42 2.57 2.73 2.89 3.05
SC 1.64 1.67 1.71 1.74 1.77

PI 0.47 0.48 0.49 0.49 0.50
TC 2.30 2.46 2.62 2.77 2.93
SC 1.60 1.63 1.67 1.70 1.73

PI 0.52 0.53 0.54 0.55 0.56

TC 2.18 2.34
SC 1.56 1.59

PI 0.58 0.59

TC 2.07 2.23 2.38 2.54 2.70
SC 1.52 1.55 1.58 1.62 1.65

PI 0.63 0.64 0.65 0.66 0.67
TC 1.93 2.09 2.24 2.40 2.56

SC 1.47 1.50 1.53 1.57 1.60

PI 0.70 0.71 0.72 0.72 0.73

PERFORMANCE DATA

80 - 110 % of nominal
80 - 105 % of nominal

25 - 50 % of nominal

2.50

1.63

0.60

2.66 2.82

1.66 1.69

0.60 0.61

LEGEND

TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
DB – Dry Bulb Temp., (

o

C)

o

C)
ID – Indoor
OU - Outdoor

5.1.2 Capacity Correction Factors

1.2

1.1

1

0.9

0.8

0.7

Capacity Ratio

0.6

0.5

20 25 30 35 40 45

Outdoor Tempera ture [deg C]

SM WNGDCI 1-E.1 GB

5-1

PERFORMANCE DATA

CONTENTS

5.1.3 Heating Capacity (kW) - Run Mode)

ID COIL ENTERING AIR DB TEMPERATURE [ºC]

OD COIL

ENTERING AIR

DB/WB

TEMPERATURE

[ºC]

-15/-16

-10/-12

-7/-8

-1/-2

2/1

7/6

10/9

15/12

15-24

(Protection Range)

DATA 15 20 25

TC 2.16 2.01 1.86

PI 0.49 0.54 0.58

TC 2.41 2.26 2.11

PI 0.59 0.64 0.68

TC 2.59 2.44 2.29

PI 0.66 0.71 0.76

TC 2.68 2.53 2.38

PI 0.70 0.75 0.80

TC 2.75 2.59 2.44

PI 0.72 0.77 0.82

TC 3.55

PI 0.76

TC 3.75 3.60 3.44

PI 0.81 0.86 0.90

TC 3.94 3.79 3.64

PI 0.85 0.90 0.95

TC 85 - 105 % of nominal

PI 80 - 120 % of nominal

3.40

0.81

3.25

0.86

LEGEND

TC

TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
DB – Dry Bulb Temp., (

o

C)

o

C)
ID – Indoor
OU - Outdoor

5.1.4 Capacity Correction Factors

1.2

1.1

1

0.9

0.8

0.7

Capaci ty Ratio

0.6

0.5

-15 -10 -5 0 5 10 15

Outdoor WB Temperature [deg C]

5-2

SM WNGDCI 1-E.1 GB

PERFORMANCE DATA

CONTENTS

5.2 Capacity Correction Factor Due to Tubing Length

5.2.1 Cooling

1.01

1.00

0.99

0.98

0.97

0.96

0.95

0.94

Capacity Ratio

0.93

0.92

0.91

3 4 5 6 7 8 9 1011121314151617181920

Tubing Length [m]

5.2.2 Heating

1.02

1.00

0.98

0.96

0.94

Capacity Ratio

0.92

0.90

3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Tubing Length [m]

SM WNGDCI 1-E.1 GB

5-3

PERFORMANCE DATA

CONTENTS

5.3 WNG 35 DCI

5.3.1 Cooling Capacity (kW) - Run Mode

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 22/15 24/17 27/19 29/21 32/23

TC
SC

PI
TC 3.38 3.60 3.83 4.05 4.27
SC 2.40 2.45 2.50 2.55 2.60

PI 0.78 0.79 0.81 0.82 0.84
TC 3.22 3.44 3.66 3.88 4.11
SC 2.34 2.39 2.44 2.49 2.54

PI 0.87 0.88 0.90 0.91 0.93

TC 3.06 3.28
SC 2.28 2.33

PI 0.96 0.98

TC 2.89 3.12 3.34 3.56 3.78
SC 2.22 2.27 2.32 2.37 2.42

PI 1.05 1.07 1.08 1.10 1.11
TC 2.70 2.92 3.14 3.36 3.58

SC 2.15 2.20 2.25 2.30 2.34

PI 1.16 1.18 1.19 1.21 1.22

80 - 110 % of nominal
80 - 105 % of nominal

25 - 50 % of nominal

3.50

2.38

0.99

3.72 3.94

2.43 2.48

1.00 1.02

LEGEND

TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
DB – Dry Bulb Temp., (

o

o

C)

C)

ID – Indoor
OU - Outdoor

5.3.2 Capacity Correction Factors

1.2

1.1

1

0.9

0.8

0.7

Capacity Ratio

0.6

0.5

20 25 30 35 40 45

Outdoor Temperature [deg C]

5-4

SM WNGDCI 1-E.1 GB

5.3.3 Heating Capacity (kW) - Run Mode

CONTENTS

ID COIL ENTERING AIR DB TEMPERATURE [ºC]

OD COIL

ENTERING AIR

DB/WB

TEMPERATURE

[ºC]

-15/-16

-10/-12

-7/-8

-1/-2

2/1

7/6

10/9

15/12

15-24

(Protection Range)

DATA 15 20 25

TC 2.74 2.55 2.35

PI 0.68 0.74 0.81

TC 3.05 2.86 2.66

PI 0.81 0.88 0.95

TC 3.28 3.09 2.90

PI 0.92 0.99 1.06

TC 3.39 3.20 3.01

PI 0.97 1.04 1.11

TC 3.47 3.28 3.09

PI 1.00 1.07 1.14

TC 4.49

PI 1.06

TC 4.74 4.55 4.36

PI 1.12 1.19 1.26

TC 4.99 4.80 4.60

PI 1.18 1.25 1.32

TC 85 - 105 % of nominal

PI 80 - 120 % of nominal

4.30

1.13

PERFORMANCE DATA

4.11

1.19

LEGEND

TC

TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
DB – Dry Bulb Temp., (

o

C)

o

C)
ID – Indoor
OU - Outdoor

5.3.4 Capacity Correction Factors

1.2

1.1

1

0.9

0.8

0.7

Capacity Ratio

0.6

0.5

-15 -10 -5 0 5 10 15

Outdoor WB Temperature [deg C]

SM WNGDCI 1-E.1 GB

5-5

PERFORMANCE DATA

CONTENTS

5.4 Capacity Correction Factor Due to TUbing Length

5.4.1 Cooling

1.01

1.00

0.99

0.98

0.97

0.96

0.95

0.94

Capaci ty Ratio

0.93

0.92

0.91

3 4 5 6 7 8 9 1011121314151617181920

Tubing Length [m]

5.4.2 Heating

1.02

1.00

0.98

0.96

0.94

Capacity Ratio

0.92

0.90

3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Tubing Length [m]

5-6

SM WNGDCI 1-E.1 GB

6. PRESSURE CURVES

CONTENTS

6.1 Model: WNG 25 DCI

6.1.1 Cooling - Test Mode

PRESSURE CURVES

Suction Pressure [kPa]

Discharge Pressure [kPa]

Suction Pressure V S. Outdoor Temp'

1400

1300

1200

1100

1000

900

800

700

600

500

10 15 20 25 30 35 40 45

Outdoor Temp.(°C DB)

Discharge Pressure VS. Outdoor Temp'

4000
3750
3500
3250
3000
2750
2500
2250
2000
1750
1500
1250
1000

10 15 20 25 30 35 40 45

Indoor DB/W B

Temp.

22/15
24/17
27/19
29/21
32/23

Indoor DB/WB

Temp.

22/15

24/17

27/19

29/21

32/23

SM WNGDCI 1-E.1 GB

Outdoor Tem p.(°C DB)

6-1

PRESSURE CURVES

CONTENTS

6.1.2 Heating - Test Mode

Suction Pressure VS. Outdoor Temp'

1300
1200
1100
1000

900
800
700
600
500
400

Suction Pressure [kPa]

300
200

-15 -10 -5 0 5 10 15

Indoor DB

Temp'

15
20
25

Outdoor Tem p.(°C WB)

3500
3250
3000
2750
2500
2250
2000
1750
1500
1250

Discharge Pressure [kPa]

1000

Discharge Pressure VS. Outdoor Temp'

Indoor DB

Temp'

15

20

25

-15 -10 -5 0 5 10 15

Outdoor Tem p.(°C WB)

6-2

SM WNGDCI 1-E.1 GB

6.2 Model: WNG 35 DCI

CONTENTS

6.2.1 Cooling - Test Mode

Suction Pressure VS. Outdoor Tem p'

PRESSURE CURVES

1400

1300

1200
1100

1000

Suction Pressure [kPa]

4000
3750
3500
3250
3000
2750
2500
2250
2000
1750
1500

Discharge Pressure [kPa]

1250
1000

900

800
700

600

500

10 15 20 25 30 35 40 45

Outdoor Tem p.(°C DB)

Discharge Pressure VS. Outdoor Temp'

10 15 20 25 30 35 40 45

Indoor DB/WB

Temp.

22/15

24/17

27/19

29/21

32/23

Indoor DB/WB

Temp.

22/15
24/17
27/19
29/21
32/23

SM WNGDCI 1-E.1 GB

Outdoor Te mp.(°C DB)

6-3

PRESSURE CURVES

CONTENTS

6.2.2 Heating - Test Mode

Suction Pressure VS. Outdoor Temp'

4000
3750
3500
3250
3000
2750
2500
2250
2000
1750
1500

Discharge Pressure [kPa]

1300
1200
1100
1000

900
800
700
600
500
400

Suction Pressure [kPa]

300
200

-15 -10 -5 0 5 10 15

Outdoor Temp.(°C WB)

Discharge Pressure VS. Outdoor Temp'

-15 -10 -5 0 5 10 15

Indoor DB

Temp'

15
20
25

Indoor DB

Tem p'

15

20

25

6-4

Outdoor Tem p.(°C WB)

SM WNGDCI 1-E.1 GB

ELECTRICAL DATA

CONTENTS

7. ELECTRICAL DATA

7.1 Single Phase Unit

Model WNG 25 DCI WNG 35 DCI

Power Supply 1 PH ,220-240VAC ,50HZ
Connected to Indoor
Maximum Current 10A
Inrush Current \
Starting Current\
Circuit Breaker 16A
Power Supply wiring no. x cross section 3 X 1.5 mm²
Interconnecting cable no. x cross section 4 X 1.5 mm²

NOTE

(a)

(b)

(a) Inrush current is the current when power is up (charging the DC capacitors

at outdoor unit controller).

(b) Starting current is the current at compressor start up.

Power wiring cord should comply with local lows and electrical
regulations requirements.

35A
10A

SM WNGDCI 1-E.1 GB

7-1

8. WIRING DIAGRAMS

CONTENTS

8.1 WNG 25 / 35 DCI

Display

(clock)

Dry contact

WIRING DIAGRAMS

P9

PH-12

Power supply

~230V 50Hz

4527310

Flash port

2

P1

1

To metal sheet

P30

INDOOR UNIT CIRCUIT DIAGRAM

OUTDOOR UNIT CIRCUIT DIAGRAM

45
3

M1

step motor

t

e

r

w

o

u

F

ESF

e

i

n

r

w

F

e

Ionzer

213

i

t

e

regulator

Voltage

ICTRAT

d

6

h

i

t

e

k

a

c

45

u

e

31

IFAN

2

a

y

r

n

o

b

w

capacitor

a

y

SUCT

CTT

OCT

OAT

G

F

s

V

p

c

V

c

H

T

R

A

OFAN

E

d

V

c

Base

heater

valve

Reverse

e

i

t

e

Choke coil

c

k

w

n

COMP

d

P6

2

1

2

o

p

S

E

P12

1

2

o

p

S

E

(red)

1

P8

l

u

b

P2

h

w

P10

212

P5

(red)

1

P4

e

r

w

b

l

l

b

g

r

1uF 400V

P16 P15P11 P3P19P14

g

r

22

1

1

2

1

2

1

B

l

u

e

Y

e

l

l

o

w

5 6

O

r

a

n

g

e

a

B

l

c

k

3 4

e

R

d

1 2

2

1

2

1

B

l

u

W

h

B

l

a

W

V

B

r

o

R

e

U

P13

P20

P22

Indoor unit controller PCB

P8

P20

P19

P2

P21P22

P18

P17

P16

P1

P4

P14

Outdoor unit controller PCB

P13

P11

P9

P3

magnetic ring

Jumper

P17

31

2 4

megatool

P7

42
3

megatool

1

P6

1

2

3

P7

4
5

6

5
4

JP9

31

26

P12

EARTH

Y/G

N-COM

P10

COM

N
L

Y/G

L

N

4/L

5/C

6

EEV

magnetic ring

EMI filter PCB

Blue

Brown

Y/G

Blue

Red

Brown

Y/G

Blue

Red

Brown

Y/G

N/3

L/4

C/5

Y/G

Brown

Red

FUSE

N

L

COM

EARTH

L-F

N-F

COM

NCOM

EARTH

Black

Red

Blue

SM WNGDCI 1-E.1 GB

8-1

9. REFRIGERATION DIAGRAMS

CONTENTS

9.1 Heat Pump Models

9.1.1 WNG 25 / 35 DCI: Cooling Mode

OUTDOOR UNIT

Sensor

REFRIGERATION DIAGRAMS

INDOOR UNIT

Sensor

Reverse

valve

EEV

Outdoor coil

Strainer

Strainer

9.1.2 WNG 25 / 35 DCI: Heating Mode

OUTDOOR UNIT

Sensor

Valves

Flared

connection

Indoor coil

INDOOR UNIT

Sensor

SM WNGDCI 1-E.1 GB

Outdoor coil

Reverse

Strainer

valve

EEV

Strainer

Valves

Flared

connection

Indoor coil

9-1

10. TUBING CONNECTIONS

CONTENTS

TUBE (Inch)

TORQUE (Nm)

TUBING CONNECTIONS

¼’’ Ǫ’’

Flare Nuts
Valve Cap
Service Port Cap

 6ALVE0ROTECTION#APEND
 2EFRIGERANT6ALVE0ORTUSE!LLENWRENCHTOOPENCLOSE
 6ALVE0ROTECTION#AP
 2EFRIGERANT6ALVE
 3ERVICE0ORT#AP
 &LARE.UT
 5NIT"ACK3IDE
 #OPPER4UBE

7HENTHEOUTDOORUNITISINSTALLEDABOVETHEINDOORUNITANOILTRAPISREQUIREDEVERYMALONGTHESUCTIONLINE
ATTHELOWESTPOINTOFTHERISER)NCASETHEINDOORUNITISINSTALLEDABOVETHEOUTDOORNOTRAPISREQUIRED

11-13 40-45
13-20 13-20
11-13 11-13

SM WNGDCI 1-E.1 GB

10-1

CONTROL SYSTEM

CONTENTS

11. CONTROL SYSTEM

11.1 General Functions and Operating Rules

The DCI software is fully parametric.
All the model dependent parameters are shown in Blue color and with Italic style [parameter].
The parameters values are given in the last section of this control logic chapter of the service
manual.

11.1.1 System Operation Concept

The control function is divided between indoor and outdoor unit controllers. Indoor unit is the
System ‘Master’, requesting the outdoor unit for cooling/heating capacity supply. The outdoor unit is
the system nless it enters into a protection mode'Slave’ and it must supply the required capacity
avoiding it from supplying the requested capacity.
The capacity request is transferred via indoor to outdoor communication, and is represented by a
parameter called ‘NLOAD’. NLOAD is an integer number with values between 0 and 127, and it
represents the heat or cool load felt by the indoor unit.

11.1.2 Compressor Frequency Control

11.1.2.1 NLOAD setting

The NLOAD setting is done by the indoor unit controller, based on a PI control scheme.
The actual NLOAD to be sent to the outdoor unit controller is based on the preliminary LOAD
calculation, the indoor fan speed, and the power shedding function.

NLOAD limits as a function of indoor fan speed:
Indoor Fan Speed Maximum NLOAD Cooling Maximum NLOAD Heating
Low
Medium
High
Turbo
Auto

NLOAD limits as a function of power shedding:
Mode Power Shedding OFF Power Shedding ON
Cool No limit Nominal Cooling
Heat No limit Nominal Heating

Max NLOADIF1C
Max NLOADIF2C
Max NLOADIF3C
Max NLOADIF4C
Max NLOADIF5C

127
127
127
127
127

11.1.3 Target Frequency Setting

The compressor target frequency is a function of the NLOAD number sent from the indoor
controller and the outdoor air temperature.
Basic Target Frequency Setting:

NLOAD Target Frequency
127
10 < NLOAD < 127 Interpolated value between minimum and maximum frequency
10
0 Compressor is stopped

SM WNGDCI 1-E.1 GB

Maximum frequency

Minimum frequency

11-1

CONTROL SYSTEM

CONTENTS

Target frequency limits as a function of outdoor air temperature )OAT(:
OAT Range Cool mode limits Heat mode limits
OAT No limit<6
6≤OAT<15
15 ≤ OAT < 24
24 ≤ OAT No limit

MaxFreqAsOATC

MaxFreqAsOAT1H

MaxFreqAsOAT2H

11.1.4 Frequency Changes Control

Frequency change rate is 1 Hz/sec.

11.1.5 Compressor Starting Control

Frequency

Step 3

Step 2

Step 1

1

Minute

1

Minute

Time

Min 10 Minutes

11.1.6 Minimum On and Off Time

3 minutes.

11.1.7 Indoor Fan Control

10 Indoor fan speeds are determined for each model. 5 speeds for cool/dry/fan modes and 5
speeds for heat mode.
When user sets the indoor fan speed to a fixed speed )Low/ Medium/ High(, unit will operate
constantly at set speed.
When Auto Fan is selected, indoor unit controller can operate in all speeds. The actual speed is set
according to the cool/heat load.

11.1.7.1 Turbo Speed

The Turbo speed is activated during the first 30 minutes of unit operation when auto fan speed is
selected and under the following conditions:
Difference between set point and actual room temperature is bigger then 3 degrees.
Room temperature 22 for cooling, or 25 for heating.><

11-2

SM WNGDCI 1-E.1 GB

CONTROL SYSTEM

CONTENTS

11.1.8 Heating Element Control

Heating element can be started if LOAD 0.8 mumNLOAD AND Indoor Coil temperature> * Maxi
<45.
The heating element will be stopped when LOAD 0.5 MaximumNLOAD OR if Indoor Coil<*
Temperature 50.>

11.1.9 Outdoor Fan Control

7 outdoor fan speeds are determined for each model. 3 speeds for cool and dry modes, and 3
speeds for heat mode, and a very low speed.
Outdoor fan speed is a function of compressor frequency and outdoor air temperature (OAT).
4 routines for fan control are determined. The control routine selection depends on operation
mode, compressor speed, outdoor air temperature (OAT) and heat sink temperature (HST).

Routine Conditions
A Heating with OAT 15<

or
Cooling with OAT > 20

0

C

0

C, or HST 50>0C
or
Faulty OAT

B Cooling with 20
C Cooling with 7
D Heating with OAT 15>

0

C>OAT>500C

0

C>OAT

0

C

Outdoor Fan Speed
Compressor Frequency (CF) Routine A Routine B Routine C Routine D
CF 0 OFF OFF OFF OFF=
10 ≤ CF < OFLowFreq Low Low Very Low Low
10 ≤ CF < OFMedFreq Medium Low Very Low Low

OFMedFreq ≤ CF High Low Low Medium

When compressor is switched to OFF and the heat sink temperature is above 55 degrees, the
outdoor fan will remain ON in low speed for up to 3 minutes.

11.1.10 EEV (electronic Expansion valve) Control

EEV opening is defined as EEV = EEVOL+EEV
EEVOLis the initial EEV opening as a function of the compressor frequency, operation mode, unit
model and capacity.
EEV

is a correction value for the EEV opening that is based on the compressor temperature.

CV

During the first 10 minutes of compressor operation EEV
Once the first 10 minutes are over, the correction value is calculated as follow: EEV
EEV
EEV

(N-1) + EEV

CV

is the correction based on the compressor temperature. A target compressor temperature

CTT

CTT

is set depending on frequency and outdoor air temperature, and the actual compressor
temperature is compared to the target temperature to set the required correction to the EEV
opening.

CV

CV

0.=
(n) =

CV

11.1.11 Reversing Valve (RV) Control

Reversing valve is on in heat mode.
Switching of RV state is done only after compressor is off for over 3 minutes.

11.1.12 Ioniser Control

Ioniser is on when unit is on AND indoor fan is on AND Ioniser power switch (on Ioniser) is on.

SM WNGDCI 1-E.1 GB

11-3

CONTROL SYSTEM

CONTENTS

11.1.13 Electro Static Filter )ESF( Control

ESF is on when ESF switch is on, Safety switch is pressed, unit is on, AND indoor fan is on.

11.1.14 Base Heater Control

0

When OAT is connected, Base Heater will be on when unit is in heating and OAT<2
When OAT is disconnected, Base Heater will be on when unit is in heating.

C.

11.2 Fan Mode

In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed.
In AutoFan user setting, fan speed will be ad ng to the differencejusti automatically according
between actual room temperature and user set point temperature.

11.3 Cool Mode

NLOAD is calculated according to the difference between actual room temperature and user set
point temperature by PI control.
In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed.
In AutoFan user setting, fan speed will be ad8usted automatically according to the calculated
NLOAD.

11.4 Heat Mode

NLOAD is calculated according to the difference between actual room temperature and user set
point temperature by PI control.
In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed.
In AutoFan user setting, fan speed will be adng to the calculated
NLOAD.

11.4.1 Temperature Compensation

In wall mounted, ducted, and cassette models, 3 degrees are reduced from room temperature
reading (except when in I-Feel mode), to compensate for temperature difference between high and
low areas in the heated room, and for coil heat radiation on room thermistor.
The temperature compensation can be enabled/disabled by shortening of J2 on the indoor unit
controller.

Model J2 Shorted J2 Opened
Wall mounted Compensation

Disabled
Cassette Compensation Enabled Compensation Disabled
Ducted Compensation Enabled Compensation Disabled
Floor/Ceiling Compensation

Disabled

Compensation Enabled

Compensation Enabled

11-4

SM WNGDCI 1-E.1 GB

11.4.2 Indoor Fan Control in Heat Mode

CONTENTS

Indoor fan speed depends on the indoor coil temperature:

CONTROL SYSTEM

ICTST

ICTVL ICTTICTHICTL

11.5 Auto Cool/Heat Mode

When in auto cool heat mode unit will automatically select between cool and heat mode according
to the difference between actual room temperature and user set point temperature )ΔT(.
Unit will switch from cool to heat when compressor is off for 3 minutes, and ΔT < -3.
Unit will switch from heat to cool when compressor is off for 5 minutes, and ΔT < -3.

11.6 Dry Mode

As long as room temperature is higher then the set point, indoor fan will work in low speed and
compressor will work between 0 and MaxNLOADIF1C Hz.
When the room temperature is lower than the set point, compressor will be switched OFF and
indoor fan will cycle 3 minutes OFF, 1 minute ON.

11.7 Protections

There are 5 protection codes.
Normal (Norm) – unit operate normally.
Stop Rise (SR) – compressor frequency can not be raised but does not have to be decreased.
HzDown1 (D1) – Compressor frequency is reduced by 2 to 5 Hz per minute.
HzDown2 (D2) – Compressor frequency is reduced by 5 to 10 Hz per minute.
Stop Compressor (SC) – Compressor is stopped.

11.7.1 Indoor Coil Defrost Protection

ICT<-2SCSCSCSCSC

-2 ≤ ICT < 0 D1 D1 D2 D2 D2
0 ≤ ICT < 2 SR SR D1 D2 D2
2 ≤ ICT < 4 SR SR SR D1 D2
4 ≤ ICT < 6 Norm Norm SR SR D1
6 ≤ ICT < 8 Norm Norm Norm SR SR
8 ≤ ICT Normal

SM WNGDCI 1-E.1 GB

ICT TrendICT
Fast
Increasing

Increasing No change Decreasing Fast

Decreasing

11-5

CONTROL SYSTEM

CONTENTS

11.7.2 Indoor Coil over Heating Protection

ICT TrendICT

Fast

Decreasing

Decreasing No Change Increasing Fast

Increasing
ICT55SCSCSCSCSC>
53 <ICT ≤ 55 D1 D1 D2 D2 D2
49 < ICT ≤ 53 SR SR D1 D2 D2
47<ICT≤49SRSRSRD1D2
45 < ICT ≤ 47 Norm Norm SR SR D1
43 < ICT ≤ 45 Norm Norm Norm SR SR
ICT ≤ 43 Normal

11.7.3 Compressor over Heating Protection

Compressor temperature can be in one of 5 control zones )4 in protection, and 1 normal(,
according to the following chart.

CTT

Stop-Compresor

CTTOH4

CTTOH3

CTTOH2

CTTOH1

Control Status Compressor Temperature

P3

P2

P1

Normal

Else

Increases
P1 Norm SR
P2 D1 SR
P3 D2 D1
Stop Compressor SC

11.7.4 Compressor over Current Protection

CCR

Stop-Compresor

CCROC4

11-6

CCROC3

HzDown2

HzDown1

CCROC2

Stop-Rise

CCROC1

Normal

SM WNGDCI 1-E.1 GB

CONTROL SYSTEM

CONTENTS

11.7.5 Heat Sink Over Heating Protection (NA for DCI 25 and 35)

HST TrendHST

Decreasing No Change Increasing
HST SC SC SC>90
85<HST≤90D1D2D2
82 < HST ≤ 85 SR D1 D2
80 < HST ≤ 82 SR SR D1
78 < HST ≤ 80 Norm Norm SR
HST ≤ 78 Normal

11.7.6 Outdoor Coil Deicing Protection

11.7.6.1 Deicing Starting Conditions

Deicing operation will start when either one of the following conditions exist:
Case 1: OCT OAT – 8 AND TLD<>DI
Case 2: OCT OAT – 12 AND TLD 30 minutes.<>
Case 3: OCT is Invalid AND TLD DI>
Case 4: Unit is ust switched to STBY AND OCTj<OAT-8
Case 5: NLOAD 0 AND OCT OAT -8=<

OCT – Outdoor Coil Temperature
OAT – Outdoor Air Temperature
TLD – Time from Last Deicing
DI – Deicing Interval (Time Interval Between Two Deicing)

Deicing interval time when compressor is first started in heat mode, is 10 minutes if OCT < -2, and
is 40 minutes in other cases.
Deicing interval time is changed (increased/ decreased in 10 minutes steps) as a function of
deicing time. If deicing time is shorter then former deicing time, the deicing interval time will be
increased. If deicing time is longer then former deicing time, the deicing interval time will be
decreased.

SM WNGDCI 1-E.1 GB

11-7

CONTROL SYSTEM

T

CONTENTS

11.7.6.2 Deicing Protection Procedure

OCT

12

0

Threshold

COMP

RV

OFAN

EEV

ON

HEAT

COOL

ON

OFF

Any

T1 T2

EEVDeicerOpen

36 seconds, T3 nds= 6 seco

T1

max. 12 minutes

DT

T3 T3

11.8 Condensate Water Over Flow Protection

Each of the pins P1, P2, P3 can have two options:
1 – When it is shorted with P4
0 – When it is not shorted to P4

11.8.1 3 Levels Logic (used in floor/ceiling models)

P2 P3 Level

00 L0
1 0 L1
11 L23&
01 L4

11-8

SM WNGDCI 1-E.1 GB

Water Level

CONTENTS

LEVEL4

LEVEL 3

LEVEL1

Pump

NLOAD

OPER LED

CONTROL SYSTEM

ON

OFF

ANY

0

BLINK

NORMAL

11.8.2 1 Level Logic (used in all models except for floor/ceiling
models)

P2 P3 Level

Water Level

OPER

LED

NLOAD

PUMP

Don`t
care
Don`t
care

Overflow

Normal

ON

OFF

BLINK

ANY

0

ON

OFF

1 Normal

0 Overflow

Overflow when

unit is ON

NLOAD is

forced to 0

8min 8min

Overflow when

unit is OFF

8min

11.9 Indoor Unit Dry Contact

Indoor unit Dry contact has two alternative functions that are selected by J8.

J8 Presence Detector Connection No Limit Forced to STBY=Open
J8 Power Shedding Function No Limit Limit NLOAD=Open

SM WNGDCI 1-E.1 GB

Function Contact = Open Contact = Short

11-9

CONTROL SYSTEM

CONTENTS

11.10 Operating the Unit from the Mode Button

Forced operation allows to start, stop and operate in Cooling or Heating, in pre-set temperature
according to the following table:

Forced operation Mode Pre-set Temperature
Cooling 200C

0

Heating 28

C

11.11 On Unit Controls and Indicators

11.11.1 Indoor Unit Controller Controls and Indicators For All Models
Except for Floor/Ceiling model

STAND BY

INDICATOR

OPERATION INDICATOR

TIMER INDICATOR Lights up during Timer and Sleep operation.

FILTER INDICATOR Lights up when Air Filter needs to be cleaned.

COOLING INDICATOR

HEATING INDICATOR

Mode SWITCH

(COOL/HEAT/OFF)

RESET / FILTER

SWITCH

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 a R/C infrared signal has
been received and stored.
Blinks continuously during protections (according to the relevant spec
section).

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.
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.
For short pressing:
When Filter LED is on - turn off the FILTER INDICATOR after a clean
filter has been reinstalled.
When Filter LED is off able/disable the buzzer announcer, if
selected.

11-10

SM WNGDCI 1-E.1 GB

11.11.2 Indoor Unit Controls and Indicators for LCD Display

CONTENTS

STBY Cool Heat Auto Fan Dry
OFF SPT(1*)

SPT(1*)

SPT(1*)SPT(1*) SPT(1*) SPT(1*)

CONTROL SYSTEM

OFF(2*)

OFF(2*) OFF(2*) OFF(2*) OFF(2*) OFF(2*) OFF(2*)

(Low)

(Med)

(High)

(Turbo)

(Auto)
Backlight(red) OFF OFF ON(3*) ON(3*)
Backlight(green) OFF ON(3*) OFF

OFF

OFF

OFF

OFF

OFF

User
setting
IFAN
speed

ON(2*)ON(2*) ON(2*) ON(2*) ON(2*)

User
setting
IFAN
speed

User
setting
IFAN
speed

ON(3*)

User
setting
IFAN
speed

ON(3*)
ON(3*) ON(3*)

User
setting
IFAN
speed

OFF

SM WNGDCI 1-E.1 GB

11-11

CONTROL SYSTEM

CONTENTS

11.11.3 Indoor Unit Controller Controls and Indicators for Floor/Ceiling
Model

STANDBY
INDICATOR

OPERATE
INDICATOR

(4)

TIMER
INDICATOR
FILTER
INDICATOR
COOLING
INDICATOR
HEATING
INDICATOR
FAN MODE
INDICATOR

(4)

FAN SPEED
INDICATORS

TEMP.
SETTING
INDICATORS
FAN SPEED
BUTTON

TEMP.
SETTING UP
BUTTON
TEMP.
SETTING
DOWN BUTTON

MODE
BUTTON

POWER
BUTTON
RESET /
FILTER
BUTTON

Lights up when the Air Conditioner is connected to power and is ready
for operation

1. Lights up during operation.

2. Blinks for 300 msec., to announce that a R/C infrared signal
has been received and stored.

3. Blinks continuously during protections (according to the relevant spec
section).

Lights up during Timer and Sleep operation.

1. Lights up when Air Filter needs to be cleaned.

2. Blinks during Water Over Flow in PXD models. (Cf. Sect. 7.3)
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.
Lights up in Fan Mode activated by local switches.

L -- Lights up when IFAN setting is Low.
M -- Lights up when IFAN setting is Medium.
H -- Lights up when IFAN setting is High.
A -- Lights up when IFAN setting is Auto.
Each one of the seven indicators indicates the following SPT: 18, 20,
22, 24, 26, 28, 30 ]

o

c[. The odd number temperatures are indicated by
turning on the two adcent indicators.
Press this button to change the speed of the IFAN. Each pressing
change the speed in the sequence of:

..... L → M → H → Auto → L → ...

Pressing this button increases the SPT by 1
Note: The Max SPT is 30

Pressing this button decreases the SPT by 1
Note: The Min SPT is 18

o

C.

o

C.

o

C.

o

C.

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.
Toggle the unit between OPER & STBY modes.

For short pressing:
When Filter LED is on - turn off the FILTER INDICATOR after a clean
filter has been reinstalled.
When Filter LED is off able/disable the buzzer announcer, if
selected.
In long pressing system enters set up mode (if in SB).

11.11.4 Outdoor Unit Controller Indicators

Unit has three LED
SB LED is ON when power is ON (230 VAC, even when no communication).
STATUS LED is ON when COMP is ON, and Blinks according to diagnostics mode definitions
when either fault or protection occurs.
FAULT LED Blinks according to diagnostics mode definitions when either fault or protection
occurs.

11-12

SM WNGDCI 1-E.1 GB

CONTROL SYSTEM

CONTENTS

11.12 Test Mode

11.12.1 Entering Test Mode

System can enter Test mode in two ways:
Automatically when the following conditions exists for 30 minutes continuously:
Mode l, Set point 16, Room temper= Coo = ature = 27±1, Outdoor temperature = 35±1
Or
Mode = Heat, Set point = 30, Room temperature = 20±1, Outdoor temperature = 7±1
Manually when entering diagnostics with the following settings:
Mode = Cool, Set point = 16
Mode = Heat, Set point = 30

11.12.2 Unit Operation in Test Mode

In test mode, the unit will operate in fixed settings according to the indoor fan speed setting:

Indoor Fan Speed Setting Unit Setting
Low Minimum Capacity Setting
High Nominal Capacity Setting
Auto Maximum Capacity Setting
During test mode, protections are disabled, except for stop compressor status.

SM WNGDCI 1-E.1 GB

11-13

CONTROL SYSTEM

CONTENTS

11.13 SW Parameters

11.13.1 Indoor Units SW Parameters

General Parameters for All Models:

Parameters defining the indoor fan speed as a function of Indoor Coil temperature in
heat mode (ICT):

ICTST Speed ICT to stop indoor fan 25
ICTVLSpeed ICT to go down to very low speed 28
ICTLSpeed ICT to start in very low speed 30
ICTHSpeed ICT to start in increase speed from very low 32
ICTTSpeed ICT to enable Turbo fan speed 40

Model Depended Parameters:

Parameter name

NLOAD limits as a function of selected indoor fan speed

MaxNLOADIF1C 40 40
MaxNLOADIF2C 53 53
MaxNLOADIF3C 120 120
MaxNLOADIF4C 127 127
MaxNLOADIF5C 127 127

IFVLOWC 700 700
IFLOWC 800 800
IFMEDC 900 950
IFHIGHC 1050 1100
IFTURBOC 1150 1200
IFVLOWH 700 700
IFLOWH 800 850
IFMEDH 950 1000
IFHIGHH 1100 1150
IFTURBOH 1200 1250

Nominal Compressor Frequency

NomLoadC 40 62
NomLoadH 55 67

Parameter Name

NLOAD limits as a function of selected indoor fan speed

MaxNLOADIF1C 40 40 40 40
MaxNLOADIF2C 53 56 56 60
MaxNLOADIF3C 120 90 90 90
MaxNLOADIF4C 127 90 90 90
MaxNLOADIF5C 127 90 90 90

Nominal Compressor Frequency

NomLoadC 40 60 56 63

DCI 25 DCI 35

Indoor Fan speeds

K 25 K 35 K 35S K 50

Wall Mounted Models

Cassette Models

NomLoadH 55 69 73 80

11-14

SM WNGDCI 1-E.1 GB

11.13.2 Outdoor Units SW Parameters

CONTENTS

Parameter Name DCI25 DCI35 DCI 50 DCI50 DUO

Compressor Parameters

MinFreqC 30 33 20 20

MaxFreqC 64 80 85 97

MinFreqH 30 35 20 26
MaxFreqH 81 93 99 106
Step1Freq 60 60 60 60
Step2Freq 70 70 70 80
Step3Freq 90 90 90 90

Frequency limits as a function of outdoor air temperature

MaxFreqAsOATC 50 50 64 62
MaxFreqAsOAT1H 65 75 85 85
MaxFreqAsOAT2H 60 60 60 60

CONTROL SYSTEM

Compressor Over Heating Protection

CTTOH1 94 94 94 90
CTTOH2 98 98 98 95
CTTOH3 102 102 102 102
CTTOH4 105 105 105 105

Compressor Over Current Protection [A]

CCR01 7.1 7.1 10 10
CCR02 7.5 7.5 10.5 10.5
CCR03 7.9 7.9 10.8 10.8
CCR04 8.3 8.3 11.2 11.2

Outdoor Fan Speed (RPM)

VL 200 200 200 200

OFLOWC 550 550 600 600

OFMEDC 700 700 760 830
OFMAXC 830 830 920 920

OFLOWH 550 550 600 600

OFMEDH 700 700 830 920
OFMAXH 830 830 1000 1000

SM WNGDCI 1-E.1 GB

Outdoor Fan Limit Control

OFLowFreq 45 45 40 40
OFMedFreq 57 57 70 70

11-15

TROUBLESHOOTING

CONTENTS

12. TROUBLESHOOTING WNG 25 / 35 DCI

Warning

When Power Up – the whole outdoor unit controller, including the wiring, is under HIGH

VOLTAGE

Never open the Outdoor unit before turning off the PowerHIG

When turned off, the system is still charged (400V)yle

It takes about 4 Min. to discharge the system.

Touching the controller before discharging may cause an electrical shock

For safe handling of the controller please refer to section 12.6 below.

12.1 Single Split system failures and corrective actions

No SYMPTOM PROBABLE

CAUSE

1 Power supply indicator

(Red LED) does not light
up.

2 Unit does not respond to

remote control message

3 Unit responds to remote

control message but
Operate indicator (Green
LED) does not light up

(louvers are opened and
Green LED does light
up)

5 Indoor fan works when

unit is OFF, and indoor
fan speed is not
changed by remote
control command.

6 Compressor does not

start

7 Compressor stops

during operation and
Green LED remains on

No power supply Check power supply. If power supply

Remote control
message not
reached the indoor
unit

Problem with
display PCB

Unit in heat mode
and coil is still not
warm.
Problem with PCB
or capacitor

PCB problem Replace controller

Electronics control
problem or
protection
Electronic control
or power supply
problem

CORRECTIVE ACTION

is OK, check display and display
wiring. if OK, replace controller.
Check remote control batteries, if
batteries are OK, check display and
display wiring, if OK, replace display
PCB.
If still not OK replace controller.
Replace display PCB.
If still not OK replace controller.

Change to cool mode and check.4 Indoor fan does not start

Change to high speed and Check
power supply to motor is higher than
130VAC (for triack controlled motor)
or higher than 220VAC for fixed
speed motors, if OK replace
capacitor, if not OK replace
controller

Perform diagnostics (See 12.3
below), and follow the actions
described.
Perform diagnostics (See 12.3
below), and follow the actions
described.

SM WNGDCI 1-E.1 GB

12-1

TROUBLESHOOTING

CONTENTS

No SYMPTOM PROBABLE

CAUSE

8 Compressor is on but

outdoor fan does not
work

9 Unit works in wrong

mode )cool instead of
heat or heat instead of
cool(

10 All components are

operating properly but
no cooling or no heating

11 Compressor is over

heated and unit does not
generate capacity

12 Units goes into

protections and
compressor is stopped
with no clear reason

13 Compressor motor is

generating noise and no
suction occurs

14 Water leakage from

indoor unit

15 Freezing of outdoor unit

in heat mode and
outdoor unit base is
blocked with ice

16 Unit operates with wrong

fan speeds or wrong
frequency

Problem with
outdoor electronics
or outdoor fan
Electronics or
power connection
to RV

Refrigerant leak Check refrigeration system.

EEV problem Check EEV

Control problem or
refrigeration
system problem

Phase order to
compressor is
wrong
Indoor unit
drainage tube is
blocked

Wrong umperj
settings

CORRECTIVE ACTION

Check outdoor fan motor according
to the procedure in section 12.5.3
below, if not OK replace controller
Check RV power connections, if OK,
Check RV operation with direct
230VAC power supply, if OK,
Replace outdoor controller.

Perform diagnostics )See 12.3
below(, and follow the actions
described.

Check compressor phase order.

Check and open drainage tube.

Connect base heater.

Perform diagnostics (See 12.3
below), and check if units is
operating by EEPROM parameters.

12.2 Checking the refrigeration system

Checking system pressures and other thermodynamic measures should be done when system
is in Test Mode (in Test mode, system operates in fixed settings). The performance curves
given in this manual are given for unit performance in test mode when high indoor fan speed is
selected.
Entering test mode:
Set unit to Cool/16 degrees/High indoor fan speed, or Heat/30 degrees/High indoor fan speed,
and enter diagnostics.

12-2

SM WNGDCI 1-E.1 GB

TROUBLESHOOTING

CONTENTS

12.3 Judgment by Indoor/Outdoor Unit Diagnostics

Enter diagnostics mode - press for five seconds Mode button in any operation mode.
Acknowledgment is by 3 short beeps and lights of COOL and HEAT LEDs. Then, every short
pressing of Mode button will scroll between Indoor and Outdoor unit diagnostic modes by the
acknowledgment of 3 short beeps and lighting of COOL and HEAT LED s.'
During the Outdoor unit diagnostics all four Indoor LED’s, (STBY, Operate, Filter and Timer)
are blinking. When Indoor diagnostics is displayed, all four LED’s (STBY, Operate, Filter and
Timer) are ON.
When system enters diagnostics mode, only one fault code is shown. Order of priority is from
the lower to the higher number. Diagnostics is continuously ON as long as power is ON. The
current system operation mode will not be changed.
If no fault occurred in the system, no fault code will be displayed during normal operation
mode. The last fault code will be displayed even if the system has recovered from that
fault. The last fault will be deleted from the EEPROM after the system has exit diagnostics
mode.
In diagnostics mode, system fault / status will be indicated by blinking of Heat d Cool LEDs.
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 Indoor / Outdoor unit
tables:
Note: 0 – OFF, 1-ON

12.3.1 Indoor unit Diagnostics

No Problem 54321

1 RT-1 is disconnected 00001
2 RT-1 is shorted 00010
3 RT-2 is disconnected 00011
4 RT-2 is shorted 00100
5 Reserved 00101
7 Communication mismatch 0 0111
8 No Communication 0 1 0 0 0

No Encoder 0 1 0 0 19
10 Reserved 0 1 0 1 0
11 Outdoor Unit Fault 01011

... Reserved

17 Defrost protection 10001

Deicing Protection 1 0 0 1 0

18
19 Outdoor Unit Protection 1 0 0 1 1
20 Indoor Coil HP Protection 10100

21 Overflow Protection 1 0 1 0 1

22 Reserved
24 EEPROM Not Updated 11000
25 Bad EEPROM 1 1 0 0 1
26 Bad Communication 11010
27 Using EEPROM data 11011
28ModelA 11100

Model B 1 1 1 0 1

29
30 Model C 11110
31 Model D 1 1111

SM WNGDCI 1-E.1 GB

12-3

TROUBLESHOOTING

CONTENTS

12.3.2 Indoor unit diagnosis and corrective actions

No.

1

2

3

4

5

6

7

8

9

Fault

Sensor failures of
all types

Communication
mismatch

No Communication

No Encoder

Outdoor Unit Fault

EEPROM Not
Updated

Bad EEPROM

Bad
Communication

Using EEPROM
data

Probable Cause Corrective Action

Check sensor connections or
replace sensor.

Indoor and Outdoor
controllers are with different
Versions.
Communication or grounding
wiring is not good.
Indoor electronics or motor Checkmotorwiring,ifok,.

Outdoor controller problem Switch to Outdoor.

System is using ROM
parameters and not
EEPROM parameters.

Communication quality is low
Reliability.

No problem. System is using
EEPROM parameters.

Replace Indoor controller.

Check Indoor to Outdoor
wiring and grounding.

replace motor, if still not ok,
replace Indoor controller.

diagnostics.
No action, unless special
parameters are required for
unit operation.
No action, unless special
parameters are required for
unit operation.
Check Indoor to Outdoor
wiring and grounding.

12-4

SM WNGDCI 1-E.1 GB

 2XWGRRU XQLW 'LDJQRVWLFV

CONTENTS

No Problem 5 4 3 2 1

1 OCT is disconnected
2 OCT is shorted
3 CTT is disconnected
4 CTT is shorted
5 HST is disconnected (when enabled)
6 HST is shorted (when enabled)
7 OAT is disconnected (when enabled)
8 OAT is shorted (when enabled)

9 TSUC is disconnected (when enabled)
10 TSUC is shorted (when enabled)
11 IPM Fault
12 Bad EEPROM
13 DC under voltage
14 DC over voltage
15 AC under voltage
16 IDU/ODU Communication mismatch
17 No Communication
18 Reserved

20 Heat sink Over Heating
21 Deicing
22 Compressor Over Heating
23 Compressor Over Current
24 No OFAN Feedback
25 OFAN locked
26 Compressor Lock
27 Bad Communication

TROUBLESHOOTING

0 0 0 0 1
0 0 0 1 0
0 0 0 1 1
0 0 1 0 0
0 0 1 0 1
0 0 1 1 0
0 0 1 1 1
0 1 0 0 0
0 1 0 0 1
0 1 0 1 0
0 1 0 1 1
0 1 1 0 0
0 1 1 0 1
0 1 1 1 0
0 1 1 1 1
1 0 0 0 0
1 0 0 0 1
1 0 0 1 0
1 0 1 0 0
1 0 1 0 1
1 0 1 1 0
1 0 1 1 1
1 1 0 0 0
1 1 0 0 1
1 1 0 1 0
1 1 0 1 1

SM WNGDCI 1-E.1 GB

1 – ON, 0 – OFF

Only one code is shown. Order of priority is 1-24. Diagnostics is continuously

ON as long power is on.

12-5

TROUBLESHOOTING

CONTENTS

12.3.4 Outdoor unit diagnosis and corrective actions

o.

Fault

Sensors failures of all
types

IPM Fault Electronics HW

Bad EEPROM No action, unless special

DC under/over Voltage Electronics HW

AC under Voltage Check outdoor unit power

Indoor / Outdoor unit
Communication
mismatch
No Communication Communication or

Compressor Lock Switch unit to STBY and

Bad Communication Communication quality is

Probable Cause Corrective Action

Check sensors
connections or replace
sensors.
Check all wiring and

problem

problem

Indoor and Outdoor
controllers are with
different versions

grounding wiring is not
good.

low reliability

umper settings, if OK,
replace electronics.

parameters are required
for unit operation.
Check outdoor unit power
supply voltage

supply voltage
Replace Indoor controller

Check Indoor to Outdoor
wiring and grounding

restart
Check Indoor to Outdoor
wiring and grounding

12-6

SM WNGDCI 1-E.1 GB

TROUBLESHOOTING

CONTENTS

12.4 Judgment by MegaTool

MegaTool is a special tool to monitor the system states.

Using MegaTool requires:

• A computer with RS232C port.

• A connection wire for MegaTool.

• A special MegaTool software.
Use MegaTool according to following procedure:

• Setup MegaTool software: copy the software to the computer.

• Connect RS232C port in computer with MegaTool port in Indoor/Outdoor unit

controller by the connection wire.

• Run the software and choose the COM port, you can monitor the A/C system state
in monitor tab.

12.5 Simple procedures for checking the Main Parts

12.5.1 Checking Mains Voltage.

Confirm that the Mains voltage is between 198 and 264 VAC. If Mains voltage is out of this
range, abnormal operation of the system is expected. If in range check the Power (Circuit)
Breaker and look for broken or loosed cable lugs or wiring mistake(s).

12.5.2 Checking Power Input.

If Indoor unit power LED is unlighted, power down the system and check the fuse of the Indoor
unit. If the fuse is OK replace the Indoor unit controller. If the fuse has blown, replace the fuse
and power up again.
Checking Power Input procedure for the Outdoor unit is the same as with the Indoor unit.

12.5.3 Checking the Outdoor Fan Motor.

Enter Test Mode (where the OFAN speed is high)
Check the voltage between lead wires according to the normal value as following:

• Between red wire and black wire: 310VDC +/- 20V

• Between orange wire and black wire: 15VDC +/- 1V

• Between yellow wire and black wire: 2-6VDC

12.5.4 Checking the Compressor.

The compressor is brushless permanence magnetic DC motor. Three coil resistance is
same. Check the resistance between three poles. The normal value should be below 0.5
ohm (TBD).

12.5.5 Checking the Reverse Valve (RV).

Running in heating mode, check the voltage between two pins of reverse valve

connector, normal voltage is 220VAC.

12.5.6 Checking the electrical expansion valve (EEV).

SM WNGDCI 1-E.1 GB

The EEV has two parts, drive part and valve. The drive part is a step motor
the valve. Check the drive voltage (12VDC). When Outdoor unit is power on, EEV shall
run and have click and vibration.

12-7

TROUBLESHOOTING

CONTENTS

12.6 Precaution, Advise and Notice Items

12.6.1 High voltage in Outdoor unit controller.

Whole controller, including the wires that are connected to the Outdoor unit controller may
have the potential hazard voltage when power is on. Touching the Outdoor unit controller
may cause an electrical shock.
Advise: Don naked lead wire and don t insert finger, conductor or anything''t touch the
else into the controller when power is on.

12.6.2 Charged Capacitors

Three large-capacity electrolytic capacitors are used in the Outdoor unit controller.
Therefore, charging voltage (380VDC) remains after power down. Discharging takes
about four minutes after power is off. Touching the Outdoor unit controller before
discharging may cause an electrical shock.

12.6.3 Additional advises

• When disassemble the controller or the front panel, turn off the power supply.

• When connecting or disconnecting the connectors on the PCB, hold the whole housing,
dont pull the wire.

• There are sharp fringes and sting on shell. Use gloves when disassemble the A/C
units.

12-8

SM WNGDCI 1-E.1 GB

EXPLODED VIEWS AND SPARE PARTS LISTS

CONTENTS

13. EXPLODED VIEWS AND SPARE PARTS LISTS

13.1 Outdoor Unit: ONG 25 / 35 DCI

SM WNGDCI 1-E.1 GB

13-1

EXPLODED VIEWS AND SPARE PARTS LISTS

CONTENTS

13.2 Outdoor Unit: ONG 25 / 35 DCI

No. Part No. Description Unit

1 433218

2 4526340

3 433223

4 4526476

5 4527092

6 433215

7 4523060

8 4526299 Partition 1

9 4526403

10 4524177 Gas valve (R410A) 1

11 4524176 Liquid valve(R410A) 1

12 4526224 EMI fliter board 901-098-00 1

13 4526396 Chock Assy. 167-021-01 1

14 4526223 AC-IN connected wire 1

15 4526968 Earthing wire for DCI 1

16 4526222 Fuse connecting wire 1

17 4526300

18 4526220

19 4526219

204107 Cable clip nylon

20

4519188 4 poles terminal block

21

433229 Value cover

22

4522509 4-Way valve coil

23

24 4526367

4526393

4518952 4-way valve (DCI25)

25

4518951 4-way valve (DCI35)

26 4526221

27 4526204

4526775 Compressor top thermistor(CTT)

28

29 4526774

30 4526776

31 4526969

32 4526828

33 4526827

34 4519606

433228 Back side net

35

36 4526368

37 4526298

38 4519614

39 4526480

4519300 Nut M5 L

40

41 433225

42 4519607

Front panel A

Air inlet ring-420

Painting insulation plate

Axial fan OD=401

DC motor for DCI25/35

Motor support

Base painting Assy.

Outdoor DC inverter controller (English)

Therminal sheet

Fuse stand JEF-511B(EHK P/N:150-038-00)

Fuse 65TS(15A,230)150-031-00

4-way valve welding Assy. (DCI25)

4-way valve welding Assy. (DCI35)

Compressor wire

DC Inverter compressor Assy. 5RS102XAB

Outside air thermistor(OAT)

Outside coil thermistor(OCT)

Suction coil thermistor(SUCT)

EEV Coil (CAN-MD 12FKS-1 White)

Electronic expansion value (CAMB20YGFKS-1)

Right side panel

Condenser soldering assy

Bridge

Painting top cover

Gasket for axial fan

Handle

Left side panel painting plate

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

1

1

1

13-2

SM WNGDCI 1-E.1 GB

EXPLODED VIEWS AND SPARE PARTS LISTS

CONTENTS

13.3 Indoor Unit: N-WNG 25 / 35 LCD DCI

SM WNGDCI 1-E.1 GB

13-3

EXPLODED VIEWS AND SPARE PARTS LISTS

CONTENTS

13.4 Indoor Unit: N-WNG 25 / 35 LCD DCI

No. Part No. Name Total Quan. Version

1A 4526940 Grille A 1 1
1B 4526941 Grille B 1 1
1C 4526942 Grille C 1 1
1D 4526943 Grille D 1 1
1E 4526944 Grille E 1 1

2 452811300 LCD Display 1 1
3 4518655 Air Filter 2 2
4 4519132 Active Carrbon Filter 1 1

4519744 Cold Catalyst Filter 1 1
5 4527029 Frame Assy 1 1
6 4526946 LCD Display Lens Assy 1 1
7 4526952 Screw Cover 2 1
8 433133 Ionizer Unit(Optional) 1 3

8A 4526951 Ionizer Cover(Optional) 1 1

9 4526389 R410Aevaporator Assy HPI DC WNG9/12 1 1

10 4518664 Draining Hose 1 1
11 4518682 Gear BoxAssy 1 1
12 4527434 Air Outlet Assy 1 1
13 4518646 Louver Support 2 1
14 4518638 Upper Flap 1 1
15 4526953 Lower Flap 1 1
16 4518642 Vert. Louver Link 1 1
17 4518640 Vert. Louver A 2 1

4518641 Vert. Louver B 10 1

18 4518643 Vert. Louver Lock 1 1 1

4518644 Vert. Louver Lock 2 1 1

4518645 Vert. Louver Lock 3 1 1

19 4518662 Bearing Assy 1 1
20 4518661 Cross Flow Fan 1 1
21 4518730 Base Assy 1 1
22 4518656 Mounting Hook 2 1
23 4518657 Tube Lock 1 1
24 4518670 Installation Plate 1 1
25 4518654 Tube Bracket 1 1
26 4519864 Motor 1 4
27 4518651 Motor Side Cover 1 1
28 4518650 Motor Cover 1 1
29 4519365 Step Motor Wire B 1 1
30 4518737 Step Motor Wire A 1 1
31 4518679 Step Motor 2 1
32 4520061 Power Wire (Elco) 1 1

Power Wire (Electra) 1 1

Power Wire (Airwell) 1 1
33 4519900 Ionizer Cable A(Optional) 1 1
34 433134 Ionizer Power(Optional) 1 1
35 452867800 Transformer (Optional) 1 2
36 4526180 Indoor DC inverter controller 916-512-00 1 1
37 452872800 Electrostatic Filter (Optional) 1 1

37A 4519338 Filter Frame (Optional) 1 1

38 4526950 Terminal Cover 1 1

13-4

SM WNGDCI 1-E.1 GB

EXPLODED VIEWS AND SPARE PARTS LISTS

CONTENTS

13.5 Indoor Unit: WNG 25 / 35 LED DCI

SM WNGDCI 1-E.1 GB

13-5

EXPLODED VIEWS AND SPARE PARTS LISTS

r

CONTENTS

13.6 Indoor Unit: WNG 25 / 35 LED DCI

No. Part No. Name Total Quan. Version

1 4518647 Grill A 1 1

1A 4519364

2 4518648
3 4523611
4 4518655
5 4519132

4519744
6 4518734
7 4518653
8 433133

8A 4519337

9 4526389

10 4518664

4522754

11 4518682
12 4518637

4518733

13 4518646
14 4518638
15 4518639
16 4518642
17 4518640

4518641

18 4518643

4518644

4518645

19 4518662 Bearing Assy 1 1
20 4518661
21 4518730 Base Assy 1 1
22 4518656
23 4518657
24 4518670
25 4518654
26 4519864 Motor 1 3
27 4518651
28 4518650
29 4519900
30 433134
31 4518737
32 4518679
33 4521158
34 452867800
35 4526180
36 452872800
37 4518792

Grill B
Display panel (Only for grille A)
Display
Air filter
Active carrbon filter
Cold catalyst filter
Frame Assy
Screw cover
Ionizer unit(optional)
Ionizer cover(optional)
R410A evaporator Assy HPI DC WNG9/12
Draining hose
Draining hose (for Australia market)
Gear box Assy
Air outlet
Air outlet Assy (It is including from No.13 to No.19)
Louver support
Upper flap
Lower flap
Vert. louver link
Vert. louver A
Vert. louver B
Vert. louver lock 1
Vert. louver lock 2
Vert. louver lock 3

Cross flow fan

Mounting hook
Tube lock
Installation plate
Tube bracket

Motor side cover
Motor cover
Ionizer cable A (optional)
Ionizer power (optional)
Step motor wire
Step motor
Power wire (European plug)
Transformer (optional)
Inddor DC inverter controller 916-512-00
Electrostatic filter (optional)

Terminal cove

11
11
11
21
11
11
11
21
13
11
11
11

11
11

21
11
11
11
21

10 1

11
11
11

11

21
11
11
11

11
11
11
11
11
11
11
12
11
11
11

13-6

SM WNGDCI 1-E.1 GB

EXPLODED VIEWS AND SPARE PARTS LISTS

CONTENTS

13.7 Indoor Unit: WNG 25 / 35 LED DCI

SM WNGDCI 1-E.1 GB

13-7

EXPLODED VIEWS AND SPARE PARTS LISTS

No.P

N

T

n

A

A

)

A

r

A

0

CONTENTS

13.8 Indoor Unit: N-WNG 25 / 35 LED DCI

artNo.

1
1B
1C
1D
1E

8A 4526951

10 4518664 Draining Hose 1 1
11 4518682 Gear BoxAssy 1 1
12 4527434 Air Outlet Assy 1 1
13 4518646 Louver Support 2 1
14 4518638 Upper Flap 1 1
15 4526953 Lower Flap 1 1
16 4518642 Vert. Louver Link 1 1
17 4518640 Vert. Louver A 2 1

18 4518643 Vert. Louver Lock 1 1 1

19 4518662 Bearing Assy 1 1
20 4518661 Cross Flow Fan 1 1
21 4518730 Base Assy 1 1
22 4518656 Mounting Hook 2 1
23 4518657 Tube Lock 1 1
24 4518670 Installation Plate 1 1
25 4518654 Tube Bracket 1 1
26 4519864 Motor 1 1
27 4518651 Motor Side Cover 1 1
28 4518650 Motor Cover 1 1
29 4518737 Step Motor Wire A 1 1
30 4518679 Step Motor 1 1
31 4520061 Power Wire (Elco) 1 1

33 4519900
34 433134
35 452867800
36 4526180
37 452872800 Electrostatic Filter (Optional) 1 1

37

38 452695

4526940
4526941 Grille B 1 1
4526942
4526943

4526944
2 4527557
3 4518655 Air Filter 2 2
4 4519132 Active Carrbon Filter 1 1

4519744 Cold Catalyst Filter 1 1
5 4527029 Frame Asy 1 1
6 452818600 Display Cover Assy. 1 1
7 4526952 Screw Cover 2 1
8 433133 Ionizer Unit(Optional) 1 3

9 4526389

4518641 Vert. Louver B 10 1

4518644 Vert. Louver Lock 2 1 1

4518645 Vert. Louver Lock 3 1 1

4520278

4521158

4522565

4521159

4519338

Grille A

Grille C
Grille D
Grille E
LED Display

Ionizer Cover(Optional)
R410

Power Wire (Electra without plug)
Power Wire (European plug
Power Wire (Airwell for Australia)
Power Wire (Gorenje)
Ionizer Cable
Ionizer Powe
Transformer (Optional)
Indoor DC inverter controller 916-512-00

Filter Frame (Optional)
Terminal Cover 1 1

evaporator Assy HPI DC WNG9/12

(Optional)

ame

(Optional)

otalQuan.Versio

11

11
11
11
11

11
11

11
11
11
11
11
11
11
11

11

13-8

SM WNGDCI 1-E.1 GB

EXPLODED VIEWS AND SPARE PARTS LISTS

CONTENTS

13.9 Outdoor Unit: ONG 25 / 35 DCI (new)

SM WNGDCI 1-E.1 GB

13-9

EXPLODED VIEWS AND SPARE PARTS LISTS

CONTENTS

13.10 Outdoor Unit: ONG 25 / 35 DCI (new)

No. Part No. Description Unit

1433218
2 4526340
3433223
44526476
5452889600

6 433215
7 4523060

464600016
84526299 Partition 1
94526403 Outdoor DC inverter controller (English) 1

10 4524177 Gas valve (R410A)1
11 4524176 Liquid valve(R410A)1
12 4526224 EMI fliter board 901-098-00 1
13 4526396 Chock Assy. 167-021-01 1
14 4526223 AC-IN connected wire 1
15 4526968Earthing wire for DCI 1
16 4526222 Fuse connecting wire 1
17 4526300 Therminal sheet 1
18 4526220 Fuse stand
19 4526219 Fuse 65TS(15A,230)150-031-00 1

20 204107 Cable clip nylon 1
21 4519188 4 poles terminal block 1
22 433229 Value cover 1
234522509 4-Way valve coil 1
244526367 4-way valve welding Assy. (DCI25) 1

4526393 4-way valve welding Assy. (DCI35) 1

25 4518951 4-way valve (DCI25) 1

4518952 4-way valve (DCI35) 1

26 4526221

26204 DC Inverter compressor Assy. 5RS102XAB1

27 45
284526775Compressor top thermistor(CTT) 1
294526774

453238900

30 4526776
31 4526828EEV Coil (CAN-MD 12FKS-1 White) 1
32 4526827 Electronic expansion value (CAMB20YGFKS-1) 1
33 4519606
34 433228

464800002

35 4526368
36 4526298
37 4519614
38 4526480

39 4519300 Nut M5 L 1
40 433225
41 4519607
42 453225500
43 467100004

Front panel A
Air inlet ring-420
Painting insulation plate
Axial fan OD=401
DC motor for DCI25/35

Motor support
Base painting Assy.
Base plate painting Assy.(for Nordic ma

JEF-511B(EHK P/N:150-038-00) 1

Compressor wire

Outside air thermistor(OAT)
Sensor /OAT (for Nordic market)
Outside coil thermistor(OCT)

Right side panel
Back side net
Guard net painting assy. (for Nordic market)
Condenser soldering assy
Bridge
Painting top cover
Gasket for axial fan

Handle
Left side panel painting plate
Support/ OAT 7

Heater/Base plate (for Nordic market)

(for Nordic market)

rket)

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

13-10

SM WNGDCI 1-E.1 GB

APPENDIX A

CONTENTS

APPENDIX A

INSTALLATION AND OPERATION MANUAL

► INSTALLATION MANUAL WNG 25 / 35 DCI

► OPERATING MANUAL WNG 25 / 35 DCI

SM WNGDCI 1-E.1 GB

14-1