Electra DELTA 21ST, GC 18 RC, DELTA 24RC, GC 18 ST, GC 22 ST Service Manual

DELTA 18-21-24

Indoor Units Outdoor Units

DELTA 18

GC 18

DELTA 21

GC 22

DELTA 24

OU7-24
OU7-24Z

Service Manual

SM DELTA 1-E.0 GB

JUNE – 2010

REFRIGERANT

R410A

HEAT PUMP

COOLING ONLY

A

LIST OF EFFECTIVE PAGES

SM DELTA 1-E.0 GB

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 2010

Total number of pages in this publication is 93 consisting of the following:

Page
No.

Revision
No. #

Page
No.

Revision
No. #

Page
No.

Revision
No. #

Title ....................... 0

A ........................... 0

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3-1 ........................ 0

4-1 - 4-2 ................ 0

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14-1-14-24 ............ 0

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Appendix -A ........... 0

• 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

i

TABLE OF CONTENTS

SM DELTA 1-E.0 GB

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. SOUND LEVEL CHARACTERISTICS ..................................................................6-1

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

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

9. ELECTRICAL CONNECTIONS .............................................................................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

1-1

INTRODUCTION

SM DELTA 1-E.0 GB

1. INTRODUCTION

1.1 General

The new DELTA split wall mounted is based on the compact range. It comprise the ST
(cooling only) and RC (heat pump) models, as follows:

Cooling Only:• DELTA 18ST, DELTA 21ST, DELTA 24ST
Heat Pump:• DELTA 18RC, DELTA 21RC, DELTA 24RC

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

1.2 Main Features

The DELTA series benefits from the most advanced technological innovations, namely:

 R410A refrigerant

 Micro processor control.

 Infrared remote control with LED display.

 Indoor large diameter cross flow fan, allowing low operation sound level.

 Bended Indoor coil with treated aluminum fins and coating for improved efficiency.

 High COP.

 Easy access to the interconnecting tubing and wiring connections.

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

directions.

 The units are equipped.

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

 Automatic treated air sweep.

 Low indoor noise levels.

 Easy installation and service.

1.3 Indoor Unit

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

It includes:

 Casing with air inlet and outlet grills.

 A large-diameter tangential fan.

 Bended coil with treated aluminum fins.

 Motorized flaps.

 3-speed motor with internal protection.

 Advanced electronic control box assembly.

 Interconnecting wiring terminal block.

 Mounting plate.

1-2

INTRODUCTION

SM DELTA 1-E.0 GB

1.4 Filtration

The DELTA series presents several types of air filters:

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

 Pre-charged electrostatic filter (diposable).

 Active carbon filter (optional).

 Active Electro Static re-usable filter (optional).

1.5 Control

The microprocessor indoor controller, and an infrared remote control, supplied as
standard, provide complete operating function and programming. For further details
please refer to the Operation Manual, Appendix A.

1.6 Outdoor Unit

The DELTA 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 pre-charged. For further information please
refer to the Product Data Sheet, Chapter 2.

It includes :

 Axial fan.

 Outdoor coil with hydrophilic louver fins for RC units.

 Compressor mounted in a soundproofed compartment.

 Outlet air fan grill.

 Service valves” flare” type connection.

 Interconnecting wiring terminal block.

1.7 Tubing Connections

Flare type interconnecting tubing can be produced on site.
For further details please refer to the Installation Manual, Chapter 11.

1.8 Accessories

ASK (All Season Kit):

For low ambient working conditions in cooling, an ASK can be installed inside the outdoor
unit. This kit allows cooling operation down to outdoor temp of -10 oC by gradually
controlling the outdoor fan speed motor.

RCW Wall Mounted Remote Control

The RCW remote control is mounted on the wall, and controls the unit either as an
infrared remote control or as a wired controller. The wired controller can control up to 10
Indoor units with the same program settings and adjustments.
For further details please refer to Optional Accessories, Chapter 15.

1.9 Inbox Documentation

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

1-3

INTRODUCTION

SM DELTA 1-E.0 GB

1.10 Matching Table

1.10.1 R410A

OUTDOOR UNITS

INDOOR UNITS

MODEL

REFRIGER.

DELTA 18 DELTA 21 DELTA 24

GC 18 ST/RC R410A



GC 22 ST/RC R410A



GC 24 ST/RC R410A



OU7-24 R410A



OU7-24Z R410A



The above table lists outdoor units and DELTA 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, floor/ceiling.
For further information please refer to the relevant Service Manual.

2-1

PRODUCT DATA SHEET

SM DELTA 1-E.0 GB

2. PRODUCT DATA SHEET

2.1 DELTA 18 / GC 18 R410A

Model Indoor Unit DELTA- 18
Model Outdoor Unit GC-18

Installation Method of Pipe Flared
Characteristics Units Cooling Only Cooling Heating

Capacity

(4)

Btu/hr 18250 18250 18420

kW 5.35 5.35 5.40

Power input

(4)

kW 1.66 1.66 1.56

EER (Cooling) or COP(Heating)

(4)

W/W 3.22 3.22 3.46
Energy efficiency class A A B
Power supply V/Hz/Ph 220-240V/50Hz/Single
Rated current A 7.5 7 7.1
Starting current A 43
Circuit breaker rating A 15

INDOOR

Fan type & quantity Cross flow*1
Fan speeds H/M/L RPM 1200/1100/1000
Air flow

(1)

H/M/L m3/hr 930/840/750
External static pressure Min-Max Pa N/A
Sound power level

(2)

H/M/L dB(A) 56/53/50
Sound pressure level

(3)

H/M/L dB(A) 43/40/37
Moisture removal l/hr 1.8
Condenstate drain tube I.D mm 16
Dimensions WxHxD mm 1060/295/210
Weight kg 14
Package dimensions WxHxD mm 1115/350/260
Packaged weight kg 17
Units per pallet units 16
Stacking height units 8

OUTDOOR

Refrigerant control Capillary tube
Compressor type,model Rotary,TOSHIBA PA200X2CS-4KU1
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 815
Air flow H/L m3/hr 2480
Sound power level H/L dB(A) 68
Sound pressure level

(3)

H/L dB(A) 57
Dimensions WxHxD mm 846/302/690
Weight kg 56
Package dimensions WxHxD mm 990/430/770
Packaged weight kg 61
Units per pallet Units 9
Stacking height units 3
Refrigerant type R410A
Refrigerant chargless distance kg/m 1.54kg/7.5m

Additional charge g/m

4mLength10m 1540g 10mLength18m 1690g

18mLength25m 1900g

Connections between

units

Liquid line In.(mm) 1/4"(6.35)
Suction line In.(mm) 1/2"(12.7)
Max.tubing length m. 25

Max.height difference m. 15
Operation control type Remote control
Heating elements kW
Others All season kit Factory option

(1)

Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units). and EN 14511

(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 meter distance from unit.

2-2

PRODUCT DATA SHEET

SM DELTA 1-E.0 GB

2.2 DELTA 21 / GC 22 R410A

Model Indoor Unit DELTA- 21
Model Outdoor Unit GC-22

Installation Method of Pipe Flared
Characteristics Units Cooling Only Cooling Heating

Capacity

(4)

Btu/hr 21150 21150 22180

kW 6.2 6.2 6.50

Power input

(4)

kW 2.05 2.05 2.00

EER (Cooling) or COP(Heating)

(4)

W/W 3.02 3.02 3.25
Energy efficiency class B B C
Power supply V/Hz/Ph 220-240V/50Hz/Single
Rated current A 9.3 9.3 9.7
Starting current A 50
Circuit breaker rating A 20

INDOOR

Fan type & quantity Cross flow*1
Fan speeds H/M/L RPM 1300/1200/1100
Air flow

(1)

H/M/L m3/hr 910/820/740
External static pressure Min-Max Pa 0
Sound power level

(2)

H/M/L dB(A) 60/57/55
Sound pressure level

(3)

H/M/L dB(A) 47/44/42
Moisture removal l/hr 2.3
Condenstate drain tube I.D mm 16
Dimensions WxHxD mm 1060x295x210
Weight kg 15
Package dimensions WxHxD mm 1125x360x280
Packaged weight kg 18
Units per pallet units 16
Stacking height units 8

OUTDOOR

Refrigerant control Capillary tube
Compressor type,model Rotary,TOSHIBA PA240X2CS-4KU1
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 815
Air flow H/L m3/hr 2860
Sound power level H/L dB(A) 69
Sound pressure level

(3)

H/L dB(A) 59
Dimensions WxHxD mm 846/302/690
Weight kg 56
Package dimensions WxHxD mm 990/720/430
Packaged weight kg 61
Units per pallet Units 9
Stacking height units 3 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 2.0kg/7.5m

Additional charge g/m

4mLength10m:+0g;
10mLength15m:+330g;
15mLength20m:+460g

Connections between

units

Liquid line In.(mm) 3/8"(9.53)
Suction line In.(mm) 5/8"(15.88)
Max.tubing length m. Max 20

Max.height difference m. Max 15
Operation control type Remote control
Heating elements kW 1.65/0.9
Others

(1)

Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units). and EN 14511

(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 meter distance from unit.

2-3

PRODUCT DATA SHEET

SM DELTA 1-E.0 GB

2.3 DELTA 24 / OU7-24 R410A

Model Indoor Unit DELTA- 24
Model Outdoor Unit OU7-24

Installation Method of Pipe Flared
Characteristics Units Cooling Only Cooling Heating

Capacity

(4)

Btu/hr 23100 23100 24150

kW 6.77 6.77 7.08

Power input

(4)

kW 2.24 2.24 2.35

EER (Cooling) or COP(Heating)

(4)

W/W 3.02 3.02 2.95
Energy efficiency class B B D
Power supply V/Hz/Ph 220-240V/50Hz/Single
Rated current A 10.5 10.5 11.0
Starting current A 63
Circuit breaker rating A 20

INDOOR

Fan type & quantity Cross flow*1
Fan speeds H/M/L RPM 1300/1200/1100
Air flow

(1)

H/M/L m3/hr 910/820/740
External static pressure Min-Max Pa N/A
Sound power level

(2)

H/M/L dB(A) 60/57/55
Sound pressure level

(3)

H/M/L dB(A) 47/44/42
Moisture removal l/hr 2.3
Condenstate drain tube I.D mm 16
Dimensions WxHxD mm 1060x295x210
Weight kg 15
Package dimensions WxHxD mm 1125x360x280
Packaged weight kg 18
Units per pallet units 16
Stacking height units 8

OUTDOOR

Refrigerant control Capillary tube
Compressor type,model Rotary
Fan type & quantity AXIAL*1
Fan speeds H/L RPM 850 720
Air flow H/L m3/hr 3100 2600
Sound power level H/L dB(A) 67 62
Sound pressure level

(3)

H/L dB(A) 58 54
Dimensions WxHxD mm 900/680/340
Weight kg 74
Package dimensions WxHxD mm 985/730/406
Packaged weight kg 77
Units per pallet Units 6
Stacking height units 2 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 2.035kg/12.5m

Additional charge g/m

12.5m<dd 350g<15m;
15m

<dd 1040g<20m;

Connections between

units

Liquid line In.(mm) 3/8"(9.53)
Suction line In.(mm) 5/8"(15.88)
Max.tubing length m. Max 20

Max.height difference m. Max 15
Operation control type Remote control
Heating elements kW
Others All season kit Factory option

(1)

Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units). and EN 14511

(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 meter distance from unit.

2-4

PRODUCT DATA SHEET

SM DELTA 1-E.0 GB

2.4 DELTA 24 / OU7-24Z R410A

Model Indoor Unit DELTA- 24
Model Outdoor Unit OU7-24Z

Installation Method of Pipe Flared
Characteristics Units Cooling Only Cooling Heating

Capacity

(4)

Btu/hr 23100 23100 24150

kW 6.77 6.77 7.08

Power input

(4)

kW 2.24 2.24 2.35

EER (Cooling) or COP(Heating)

(4)

W/W 3.02 3.02 2.95
Energy efficiency class B B D
Power supply V/Hz/Ph 220-240V/50Hz/Single
Rated current A 10.5 10.5 11.0
Starting current A 63
Circuit breaker rating A 20

INDOOR

Fan type & quantity Cross flow*1
Fan speeds H/M/L RPM 1300/1200/1100
Air flow

(1)

H/M/L m3/hr 910/820/740
External static pressure Min-Max Pa N/A
Sound power level

(2)

H/M/L dB(A) 60/57/55
Sound pressure level

(3)

H/M/L dB(A) 47/44/42
Moisture removal l/hr 2.3
Condenstate drain tube I.D mm 16
Dimensions WxHxD mm 1060x295x210
Weight kg 15
Package dimensions WxHxD mm 1125x360x280
Packaged weight kg 18
Units per pallet units 16
Stacking height units 8

OUTDOOR

Refrigerant control Capillary tube
Compressor type,model Rotary
Fan type & quantity AXIAL*1
Fan speeds H/L RPM 850 720
Air flow H/L m3/hr 3100 2600
Sound power level H/L dB(A) 67 62
Sound pressure level

(3)

H/L dB(A) 58 54
Dimensions WxHxD mm 900/680/340
Weight kg 64
Package dimensions WxHxD mm 985/730/406
Packaged weight kg 67
Units per pallet Units 6
Stacking height units 2 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 1.7kg / 7.5m

Additional charge g/m 7.5m<dd 30g / <15m;

Connections between

units

Liquid line In.(mm) 3/8"(9.53)
Suction line In.(mm) 5/8"(15.88)
Max.tubing length m. Max 15

Max.height difference m. Max 7
Operation control type LCD Remote control
Heating elements kW
Others

(1)

Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units). and EN 14511

(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 meter distance from unit.

2-5

PRODUCT DATA SHEET

SM DELTA 1-E.0 GB

2.4 DELTA 24 / OU7-24T R410A

Model Indoor Unit DELTA- 24
Model Outdoor Unit OU7-24T

Installation Method of Pipe Flared
Characteristics Units Cooling Only Cooling Heating

Capacity

(4)

Btu/hr 23220 23220 25130

kW 6.81 6.81 7.37

Power input

(4)

kW 2.26 2.26 2.4

EER (Cooling) or COP(Heating)

(4)

W/W 3.02 3.02 3.07
Energy efficiency class B B D
Power supply V/Hz/Ph 400V/50Hz/3N
Rated current A 4.1×3 4.1×3 4.4×3
Starting current A 55
Circuit breaker rating A 10×3

INDOOR

Fan type & quantity Cross flow*1
Fan speeds H/M/L RPM 1300/1200/1100
Air flow

(1)

H/M/L m3/hr 990/930/840
External static pressure Min-Max Pa N/A
Sound power level

(2)

H/M/L dB(A) 58/55/53
Sound pressure level

(3)

H/M/L dB(A) 45/42/40
Moisture removal l/hr 2.3
Condenstate drain tube I.D mm 16
Dimensions WxHxD mm 1060/295/210
Weight kg 15
Package dimensions WxHxD mm 1115/350/260
Packaged weight kg 18
Units per pallet units 16
Stacking height units 8

OUTDOOR

Refrigerant control Capillary tube
Compressor type,model Rotary
Fan type & quantity AXIAL*1
Fan speeds H/L RPM 850 720
Air flow H/L m3/hr 3100 2600
Sound power level H/L dB(A) 67 62
Sound pressure level

(3)

H/L dB(A) 58 54
Dimensions WxHxD mm 900/680/340
Weight kg 74
Package dimensions WxHxD mm 985/730/406
Packaged weight kg 74
Units per pallet Units 6
Stacking height units 2 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 2.035kg / 12.5m

Additional charge g/m

12.5m<dd 350g <15m;

12.5m<Add 1040g<20m

Connections between

units

Liquid line In.(mm) 3/8"(9.53)
Suction line In.(mm) 5/8"(15.88)
Max.tubing length m. Max 20

Max.height difference m. Max 15
Operation control type LCD Remote control
Heating elements kW
Others

All season kit Factory option

(1)

Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units). and EN 14511

(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 meter distance from unit.

3-1

RATING CONDITIONS

SM DELTA 1-E.0 GB

3. RATING CONDITIONS

Standard conditions in accordance with ISO 5151, ISO 13253 (for ducted units)
and EN 14511.

Cooling:

Indoor: 27

o

C DB 19oC WB

Outdoor: 35

o

C DB

Heating:

Indoor: 20

o

C DB

Outdoor: 7

o

C DB 6oC WB

3.1 Operating Limits

3.1.1 R410A

Indoor Outdoor

Cooling

Upper limit

32

o

C DB 23oC WB 46oC DB

Lower limit 21

o

C DB 15oC WB 21oC DB

Heating

Upper limit 27

o

C DB 24oC DB 18oC WB

Lower limit 20

o

C DB -9oC DB -10oC WB

Voltage

1PH 198 – 264 V

3PH 360 – 440 V

4-1

OUTLINE DIMENSIONS

SM DELTA 1-E.0 GB

4. OUTLINE DIMENSIONS

4.1 Indoor Unit: DELTA 18, 21, 24

4.2

Outdoor Unit: GC 18, 22

4-2

OUTLINE DIMENSIONS

SM DELTA 1-E.0 GB

4.3 Outdoor Unit: OU7-24, OU7-24Z

5-1

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.1 DELTA18 GC18 R410A

5.1.1 Cooling Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

ENTERING AIR

DB OU COIL (°C)

DATA

ENTERING AIR WB/DB ID COIL ( °C)

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

15

(1)

TC

5.64 5.84 5.98 6.12 6.21

SC

3.87 4.03 4.19 4.30 4.38

PI

1.18 1.18 1.18 1.18 1.19

20

(1)

TC

5.46 5.75 5.93 6.07 6.20

SC

3.79 4.00 4.17 4.28 4.36

PI

1.28 1.28 1.29 1.29 1.30

25

TC

5.16 5.57 5.86 6.04 6.18

SC

3.69 3.92 4.13 4.25 4.33

PI

1.38 1.39 1.40 1.41 1.42

30

TC

4.83 5.26 5.68 5.88 6.05

SC

3.58 3.80 4.04 4.16 4.24

PI

1.49 1.51

1.52

1.54 1.55

35

TC

4.47 4.85

5.35

5.62 5.88

SC

3.40 3.65 3.95 4.06 4.14

PI

1.61 1.63

1.66

1.67 1.68

40

TC

4.06 4.42

4.83

5.28 5.55

SC

3.21 3.45 3.74 3.86 3.93

PI

1.73 1.76 1.79 1.81 1.83

46

TC

3.53 3.86 4.24 4.68 5.05

SC

2.95 3.16 3.41 3.53 3.60

PI

1.89 1.92 1.97 1.99 2.02

LEGEND

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

o

C)

DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OU – Outdoor

(1) Marked area is below standard operating limits. For operating in low ambient

conditions, refer to Optional Accessories (Chapter 15).

5. PERFORMANCE DATA & PRESSURE CURVES

5-2

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.1.2 Heating Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

ENTERING AIR DB ID COIL ( °C)

15 20 25

ENTERING AIR

WB OU COIL ( °C)

TH PI TH PI TH PI

-10 2.84 1.25 2.73 1.33 2.62 1.40

-7 3.05 1.28 2.94 1.35 2.84 1.42

-2 3.24 1.29 3.13 1.37 3.02 1.45
2 3.94 1.36

3.78 1.44

3.62 1.53

6 5.56 1.46 5.40 1.56 5.21 1.66

10 6.05 1.54

5.89 1.65

5.72 1.76
15 6.53 1.61 6.37 1.73 6.21 1.84
20 6.89 1.65 6.72 1.79 6.53 1.93

*

the above chart includes the weighted deicing infleuence.

LEGEND

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

o

C)

DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OU – Outdoor

5.2 Capacity Correction Factor Due to Tubing Length

5.2.1 Cooling

TOTAL TUBING LENGTH

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

1.02

1

0.99 0.975 0.965 0.950 --- --- ---

*

Minimum recommended tubing length between indoor and outdoor units is 3m.

5.2.2 Heating

TOTAL TUBING LENGTH

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

1.05

1

1 0.993 0.988 0.978 --- --- ---

*

Minimum recommended tubing length between indoor and outdoor units is 3m.

5-3

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.3 Pressure Curves.

5.3.1 Cooling.

Suction Pressure VS.Outdoor Temp

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

11.0

11.5

12.0

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Suction Pressure (Bar[g])

15/21(W B/DB ºC)
17/24(W B/DB ºC)
19/27(W B/DB ºC)
21/29(W B/DB ºC)
23/32(W B/DB ºC)

Discharge Pressure VS.Outdoor Temp

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Discharge Pressure (Bar[g])

15/21(W B/DB ºC)
17/24(W B/DB ºC)
19/27(W B/DB ºC)
21/29(W B/DB ºC)
23/32(W B/DB ºC)

5-4

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.3.2 Heating.

Suction Pressure VS.Outdoor Temp

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

11.0

12.0

-10-5 0 5 101520

Outdoor Temp.( WB oC )

Suction Pressure(Bar[g])

15 DB (ºC)

20 DB (ºC)

25 DB (ºC)

Discharge Pressure VS.Outdoor Temp

14

16

18

20

22

24

26

28

30

32

34

36

-10-5 0 5 101520

Outdoor Temp.( WB oC )

Discharge Pressure(Bar[g])

25 DB (ºC)

20 DB (ºC)

15 DB (ºC)

5-5

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.4 DELTA21 GC21 R410A

5.4.1 Cooling Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

ENTERING AIR

DB OU COIL (°C)

DATA

ENTERING AIR WB/DB ID COIL ( °C)

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

15

(1)

TC

6.53 6.77 6.93 7.09 7.20

SC

4.45 4.64 4.82 4.94 5.03

PI

1.45 1.46 1.46 1.46 1.47

20

(1)

TC

6.32 6.66 6.87 7.04 7.19

SC

4.36 4.59 4.79 4.92 5.01

PI

1.58 1.58 1.59 1.60 1.60

25

TC

5.98 6.46 6.79 7.00 7.17

SC

4.25 4.51 4.75 4.89 4.98

PI

1.71 1.72 1.73 1.74 1.75

30

TC

5.59 6.09 6.58 6.81 7.02

SC

4.11 4.37 4.65 4.78 4.87

PI

1.84 1.87

1.88

1.90 1.91

35

TC

5.18 5.62

6.20

6.51 6.82

SC

3.91 4.19 4.54 4.67 4.76

PI

1.98 2.02

2.05

2.07 2.08

40

TC

4.71 5.13

5.59

6.12 6.43

SC

3.69 3.97 4.29 4.43 4.52

PI

2.14 2.17 2.21 2.24 2.26

46

TC

4.09 4.47 4.91 5.43 5.85

SC

3.40 3.64 3.92 4.05 4.14

PI

2.34 2.37 2.43 2.46 2.49

LEGEND

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

o

C)

DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OU – Outdoor

(1) Marked area is below standard operating limits. For operating in low ambient

conditions, refer to Optional Accessories (Chapter 15).

5-6

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.4.2 Heating Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

ENTERING AIR DB ID COIL ( °C)

15 20 25

ENTERING AIR

WB OU COIL ( °C)

TH PI TH PI TH PI

-10

3.41 1.60 3.28 1.70 3.15 1.79

-7 3.67 1.64 3.54 1.73 3.41 1.82

-2 3.90 1.66 3.77 1.76 3.64 1.86
2 4.75 1.74

4.55 1.85

4.36 1.96

6 6.70 1.87 6.50 2.00 6.27 2.12

10 7.28 1.97

7.09 2.11

6.89 2.26

15 7.87 2.06 7.67 2.22 7.48 2.36
20 8.29 2.12 8.09 2.30 7.87 2.48

*

the above chart includes the weighted deicing infleuence.

LEGEND

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

o

C)

DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OU – Outdoor

5.5 Capacity Correction Factor Due to Tubing Length

5.5.1 Cooling

TOTAL TUBING LENGTH

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

1.02

1

0.961 0.950 --- --- --- --- ---

*

Minimum recommended tubing length between indoor and outdoor units is 3m.

5.5.2 Heating

TOTAL TUBING LENGTH

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

1.04

1

0.975 0.961 --- --- --- --- ---

*

Minimum recommended tubing length between indoor and outdoor units is 3m.

5-7

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.6 Pressure Curves.

5.6.1 Cooling.

5-8

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.6.2 Heating.

5-9

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.7

DELTA24 / OU7- 24, DELTA24 / OU7-24Z 1PH/3PH R410A

5.7.1 Cooling Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

ENTERING AIR

DB OU COIL (°C)

DATA

ENTERING AIR WB/DB ID COIL ( °C)

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

15

(1)

TC

7.14 7.39 7.57 7.74 7.86

SC

4.80 5.00 5.20 5.33 5.43

PI

1.59 1.59 1.59 1.60 1.61

20

(1)

TC

6.90 7.28 7.51 7.68 7.85

SC

4.70 4.96 5.17 5.31 5.41

PI

1.72 1.73 1.74 1.75 1.75

25

TC

6.53 7.05 7.42 7.64 7.83

SC

4.58 4.86 5.13 5.28 5.37

PI

1.86 1.88 1.89 1.90 1.91

30

TC

6.11 6.65 7.19 7.44 7.66

SC

4.44 4.72 5.02 5.16 5.26

PI

2.01 2.04

2.06

2.07 2.09

35

TC

5.66 6.14

6.77

7.11 7.45

SC

4.22 4.52 4.90 5.04 5.14

PI

2.17 2.20

2.24

2.26 2.27

40

TC

5.14 5.60

6.11

6.68 7.02

SC

3.98 4.28 4.64 4.78 4.88

PI

2.34 2.37 2.41 2.44 2.47

46

TC

4.46 4.88 5.37 5.93 6.39

SC

3.66 3.93 4.23 4.37 4.47

PI

2.55 2.59 2.65 2.69 2.72

LEGEND

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

o

C)

DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OU – Outdoor

(1) Marked area is below standard operating limits. For operating in low ambient

conditions, refer to Optional Accessories (Chapter 15).

5-10

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.7.2 Heating Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

ENTERING AIR DB ID COIL ( °C)

15 20 25

ENTERING AIR

WB OU COIL ( °C)

TH PI TH PI TH PI

-10 3.72 1.88 3.58 2.00 3.43 2.10

-7 4.00 1.93 3.86 2.03 3.72 2.14

-2 4.25 1.95 4.11 2.07 3.96 2.19
2 5.17 2.04

4.96 2.17

4.74 2.30

6 7.29 2.20 7.08 2.35 6.83 2.50

10 7.93 2.32

7.72 2.48

7.50 2.65
15 8.57 2.42 8.35 2.61 8.14 2.77
20 9.03 2.49 8.81 2.70 8.57 2.91

*

the above chart includes the weighted deicing infleuence.

LEGEND

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

o

C)

DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OU – Outdoor

5.8 Capacity Correction Factor Due to Tubing Length

5.8.1 Cooling

TOTAL TUBING LENGTH

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

1.01

1

0.980 0.970 0.960 --- --- --- ---

*

Minimum recommended tubing length between indoor and outdoor units is 3m.

5.8.2 Heating

TOTAL TUBING LENGTH

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

1.02

1

0.990 0.990 0.980 --- --- --- ---

*

Minimum recommended tubing length between indoor and outdoor units is 3m.

5-11

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.9 Pressure Curves.

5.9.1 Cooling.

Suction Pressure VS.Outdoor Temp

5

6

7

8

9

10

11

12

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Suction Pressure (Bar[g])

21/15(DB/WB ºC)
24/17(DB/W B ºC)
27/19(DB/WB ºC)
29/21(DB/WB ºC)
32/23(DB/WB ºC)

Discharge Pressure VS.Outdoor Temp

14

16

18

20

22

24

26

28

30

32

34

36

38

40

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Discharge Pressure (Barg])

21/15(DB/WB ºC)
24/17(DB/W B ºC)
27/19(DB/WB ºC)
29/21(DB/W B ºC)
32/23(DB/W B ºC)

5-12

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.9.2 Heating.

Suction Pressure VS.Outdoor Temp

3

4

5

6

7

8

9

10

11

12

-10 -5 0 5 10 15 20

Outdoor Temp.( WB oC )

Suction Pressure(Bar[g])

15 DB (ºC)

20 DB (ºC)

25 DB (ºC)

Discharge Pressure VS.Outdoor Temp

14

16

18

20

22

24

26

28

30

32

34

36

38

40

-10-5 0 5 101520

Outdoor Temp.( WB oC )

Discharge Pressure(Bar[g])

25 DB (ºC)

20 DB (ºC)

15 DB (ºC)

6-1

SOUND LEVEL CHARACTERISTICS

SM DELTA 1-E.0 GB

6. SOUND LEVEL CHARACTERISTICS

6.1 Sound Pressure Level

6.2 Sound Pressure Level Spectrum

(Measured as Figure 1)

FAN SPEED LINE

HI

ME

LO

0.8m

Mic.

Unit

Wall

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

DELTA 24

DELTA 18 DELTA 21

Figure 1

6-2

SOUND LEVEL CHARACTERISTICS

SM DELTA 1-E.0 GB

6.3 Outdoor units

6.4 Sound Pressure Level Spectrum (Measured as Figure 2)

GC 18 Cooling GC 18 Heating

GC 22 Cooling GC 22 Heating

Mic.

Unit

Ground

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

Figure 2

6-3

SOUND LEVEL CHARACTERISTICS

SM DELTA 1-E.0 GB

Sound Pressure Level Spectrum (Measured as Figure 2)

OU7- 24 Z Cooling OU7- 24Z Heating

OU7- 24 Cooling OU7- 24 Heating

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

7-1

ELECTRICAL DATA

SM DELTA 1-E.0 GB

7. ELECTRICAL DATA

7.1 Single Phase Units

MODEL DELTA 18 DELTA 21/24 DELTA 21/24

Power Supply

To indoor To Outdoor To Outdoor

1PH-230V-50Hz 1PH-230V-50Hz 3PH-400V-50Hz

Max Current, A 11.1 14 3×6

Circuit Breaker,A 15 20 3×10

Power Supply Wiring No. X
Cross Section mm

2

3×1.5 mm

2

3×2.5 mm

2

5×1.5 mm

2

Interconnecting Cable RC
Model No. X Cross Section mm

2

5×1.5 mm2 + 2×0.5 mm2

(OCT senser)

6×1.5 mm2 + 2×0.5 mm2

(OCT senser)

6×1.5 mm2 + 2×0.5 mm2

(OCT senser)

Interconnecting Cable ST
Model No. X Cross Section mm

2

4×1.5 mm

2

5×1.5 mm2 + 2×0.5 mm

2

5×1.5 mm2 + 2×0.5 mm2

(OCT senser)

NOTE

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

8-1

WIRING DIAGRAMS

SM DELTA 1-E.0 GB

8. WIRING DIAGRAMS

8.1 Indoor Unit: DELTA 18, 21, 24

8-2

WIRING DIAGRAMS

SM DELTA 1-E.0 GB

8.2 Outdoor Unit: GC 18 1PH R410A

8-3

WIRING DIAGRAMS

SM DELTA 1-E.0 GB

8.3 Outdoor Unit: GC 24 1PH R410A

8-4

WIRING DIAGRAMS

SM DELTA 1-E.0 GB

8.4 Outdoor Unit: OU7-24 1PH R410A

8-5

WIRING DIAGRAMS

SM DELTA 1-E.0 GB

8.5 Outdoor Unit: OU7-24 3PH R410A

8-6

WIRING DIAGRAMS

SM DELTA 1-E.0 GB

8.6 Outdoor Unit: OU7-24Z R410A

9-1

ELECTRICAL CONNECTIONS

SM DELTA 1-E.0 GB

9. ELECTRICAL CONNECTIONS

9.1 DELTA 18 / 21 1PH

9.2 DELTA 24 1PH (power supply to Outdoor unit)

INDOOR UNIT

POWER SUPPLY
1PH 220-240V 50Hz

CIRCULIT BREAKER
(NOT SUPPLIED)

CONNECTED ONLY
HEAT - PUMP UNIT

OUTDOOR UNIT

INDOOR UNIT

POWER SUPPLY
1PH 220-240V 50Hz

CIRCULIT BREAKER
(NOT SUPPLIED)

CONNECTED ONLY

HEAT - PUMP UNIT

OUTDOOR UNIT

10-1

REFRIGERATION DIAGRAMS

SM DELTA 1-E.0 GB

10. REFRIGERATION DIAGRAMS

10.1 Heat Pump Models

10.1.1 DELTA 18 R410A

HEATING MODE

Service

COOLING MODE

S

ervice

Outdoor coil

Sensor

Capillary

tube

Strainer

Check

valve

OUTDOOR UNIT

valve

Reverse

tube

Capillary

Compressor

Outdoor coil

Sensor

tube

Capillary

Reverse

Strainer

valve

Compressor

tube

Capillary

Check

valve

O

UTDOOR UNIT

INDOOR UNIT

Flared

connection

Val ves

port

Indoor coil

Sensor

INDOOR UNIT

connection

Flared

Val ves

port

Indoor coil

Sensor

10-2

REFRIGERATION DIAGRAMS

Service Manual - ALPHA

10.1.2 DELTA 24 / OU7-24 R410A

10-3

REFRIGERATION DIAGRAMS

SM DELTA 1-E.0 GB

10.1.3 DELTA 24 / OU7-24Z R410A

10-4

REFRIGERATION DIAGRAMS

Service Manual - ALPHA

10.2 Cooling Only Models

10.2.1 DELTA 18, 21, 24 R410A

Outdoor coil

Strainer

Capillary

tube

Compressor

Service

port

OUTDOOR UNIT

connection

Valves

Flared

Indoor coil

Sensor

INDOOR UNIT

11-1

TUBING CONNECTIONS

SM DELTA 1-E.0 GB

11. TUBING CONNECTIONS

TUBE (Inch)

TORQUE (Nm)

¼” ” ½” ” ¾”

Flare Nuts 11-13 40-45 60-65 70-75 80-85
Valve Cap 13-20 13-20 18-25 18-25 40-50

Service Port Cap 11-13 11-13 11-13 11-13 11-13

1. Valve Protection Cap-end

2. Refrigerant Valve Port (use Allen wrench to open/close)

3. Valve Protection Cap

4. Refrigerant Valve

5. Service Port Cap

6. Flare Nut

7. Unit Back Side

8. Copper Tube

When the outdoor unit is installed above the indoor unit an oil trap is required every 5m along
the suction line at the lowest point of the riser. Incase the indoor unit is installed above the
outdoor, no trap is required.

12-1

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12. CONTROL SYSTEM DELTA18-21-24 TYPE UNITS

12.1 Electronic Control

12.1.1 Introduction

The electronic control information is designed for service applications, and is common
to the following groups of air-conditioners:

• ST/ RC group -Cooling only / cooling and heating by heat pump.

• SH group -Cooling and heating by heat pump and supplementary

heater.

• RH group -Cooling, heating by heaters only.

12.1.2 Jumpers Settings

GROUP J6 Setting J2 Setting

ST / RC Open Open

SH Closed Open

RH Closed Closed

12-2

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.2 Legend

AC - Alternate Current

A/C - Air-Conditioner
ANY - ON or OFF status
CLOCK - ON/OFF Operation Input, (dry contact)
COMP - Compressor
CPU - Central Processing Unit
ELUM - Extended Louver Upward Movement (Software Jumper)
E²PROM, EEP - Erase Enable Programmable Read Only Memory
HE - Heating Element
HPC - High Pressure Control
H/W - Hardware
ICP - Indoor Condensation Pump
ICT - Indoor Coil Temperature (RT2) sensor
IF, IFAN - Indoor Fan
IR - Infra Red
LEVEL1 - Normal Water Level
LEVEL2/3 - Medium/High Water Level
LEVEL4 - Overflow Level
Max - Maximum
Min - Minimum
min - Minute (time)
NA - Not Applicable
OCP - Outdoor Condensation Pump
OCT - Outdoor Coil Temperature (RT3) sensor
OF, OFAN - Outdoor Fan
OPER - Operate
Para. - Paragraph
RAT - Return Air Temperature (RT1) sensor
RC - Reverse Cycle (Heat Pump)
R/C - Remote Control
RCT - Remote Control Temperature
RH - Resistance Heater
RT - Room Temperature (i.e. RCT in IFEEL mode, RAT otherwise)
RV - Reversing Valve
SB, STBY - Stand-By
sec - Second (time)
Sect - Section
SH - Supplementary Heater
SPT - Set Point Temperature
ST - Standard (a Model with Cooling Only)
S/W - Software
TEMP - Temperature
W/O - Without

WVL - Water Valve
ΔT - The difference between SPT and RT.

in Heat Mode: ΔT = SPT-RT
in Cool/Dry/Fan Mode: ΔT = RT-SPT

12-3

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.3 Main PCB Controller

12.3.1 LED Display DELTA

STAND BY & OPER. INDICATOR

SIGNAL RECEIVER

MODE & RESET BUTTON FILTER LED TIMER LED

5HVHWEXWWRQ 0RGHEXWWRQ

7RURRPVHQVRU

7RLQGRRUVHQVRU %X]]HU

7RGLVSOD\

7RVWHSPRWRU

7RRXWGRRUVHQVRU

/RFN

&RPSUHVVRUUHOD\

)XVH$

/('OLJKW

12-4

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.4 General functions

12.4.1 COMP operation

For each Mode including POWER OFF & SB, a Min time delay of 3 min

before COMP restarting, excluding DEICING Mode

The Min operation time of COMP under different operating conditions is

Operation Mode

Min operation time of

COMP

Heat, Cool or Auto Modes 3 min.

Fan, Dry, Overflow, Protection modes, or mode change ignored

12.4.2 IFAN operation

• Min time interval between IFAN speed change in AUTOFAN Mode, is 30 sec.

• Min time interval between IFAN speed change in H/M/L Mode is 1 sec.

• IFAN speed in Heat/Cool Autofan Mode is determined according to the following table:

ΔT IFAN Speed

ΔT ≥ 2 HIGH

2 ≥ ΔT ≥ 1 MED

1 ≥ ΔT LOW

where in Heat Mode: ΔT = SPT-RT
in Cool Mode: ΔT = RT-SPT

Note:

• In Heat Mode, the rules in section 4.0.3 have the higher priority.

• The table above can be represent by a hysteresis curve which

will minimize the switching of the IFAN relay and will minimize the
change in IFAN speed:

T [oc]

L

M

H

IFAN speed

321

12.4.3 OFAN operation

• Min time interval between OFAN ON/OFF state change is 30 sec.

• In general, OFAN starts together with COMP.

12.4.4 HE operation

• Minimum Heaters ON or OFF time is 30 sec.

• Heaters can be activated only if IFAN is on.

12-5

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.4.5 Protections

• High pressure protection is applicable to all operating modes.

• Deicing control is valid in Heat and Auto Heat Mode only.

• Defrosting control is valid in Dry, Cool, Heat and Auto Modes.

• No reset after protection modes.

12.4.6 Thermistors operation

• Return air Temp. is detected by RAT (RT1) in normal Mode, or by RCT (R/C sensor)
in I-FEEL Mode.

• Indoor Coil Temp. is detected by ICT (RT2).

12.4.6.1 Definition of thermistor faults:

a. Thermistor is disconnected -

The thermistor reading is below -30

o

c.

b. Thermistor is shorted -

The thermistor reading is over 75

o

c.

c. Thermistor Temp reading doesn’t change (irrelevant for RT1) -

(i) This test is performed only once after a unit is switched from

OFF/STBY to operation. At the first occurrence of 10 min
continuous COMP operation, the current ICT & OCT are
compared with those when the COMP was switched from OFF
to ON 10 min before. If the ΔT is less than 3

o

c, the thermistor is

regarded as defective.

(ii) The ICT and OCT no-change error can be disabled together by

connecting a4.7 kohm resistor (5%) to the OCT connector. These
resistors are equivalent to a thermistor at 43+/-1

o

c and 48+/-1oc

respectively.

(iii) Connecting a 4.7k resistor to the ICT connector will disable the

ICT no-change error only.

12-6

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.4.6.2 Cases for disabling thermistor short/disconnected detection

i. The detection of thermistor faults (a) and (b) above, are disabled when Deicer

Protection is started. The detection will be enabled again only after (1) the
deicing is completed, and (2) COMP has been restarted and operated for 30
sec.

ii. When all the following conditions are fulfilled:

a. 4.7K Ohm resistor is connected on the OCT
b. IFAN is OFF
c. Compressor is ON
d. ICT < -30 (disconnected)
This condition come to detect and prevent IFAN operation in Deicer in multi spilt
units.

12.4.6.3 Handling the thermistor faults in a COMP unit

i. ICT/OCT thermistor is disconnected or shorted -

The invalid thermistor temperature is replaced by 43oc, so that the unit
can continue the normal operation. All protections related to that faulty
thermistor will be disabled. For example, in case of any ICT fault, the ICT
high pressure protection in Heat Mode and ICT defrost protection in Cool
Mode will not operate anymore. The same is also applied to the OCT fault.

ii. RAT thermistor is disconnected or shorted –

The RAT will be derived from the ICT by using the equations :
Heat Mode: RAT=ICT/2.3

Cool Mode RAT=ICT*4

Notes:

• In case of any thermistor failure, the STBY LED will be blinking until the
fault condition is corrected.

• User can use the system diagnostics function to find out the nature of
the thermistor faults.

i. RAT thermistor is disconnected or shorted –

System will operate continuously in the last IFAN & WVL status when
turned ON.

Notes:

• As in the COMP unit, the STBY LED will be blinking to indicate a
thermistor fault. And, the user can use the system diagnostics function
to find out the nature of the fault.

12-7

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.5 Cooling Mode - General

1) Room Temperature, RT, is detected by

• RAT in normal operation, or

• RCT (R/C sensor) in I-FEEL mode.

2) The resolution of RT is 1

o

c.

• RT is activating COMP/WVL if (RT > SPT), and

• RT is stopping COMP/WVL if (RT =< SPT).

3) Indoor Coil Temp is detected by ICT (RT2).

4) Outdoor Coil Temp is detected by OCT (RT3).

5) A WVL-RC/SH will work in Cooling Mode when

• ICT < 16

o

c in general (see Sect 2.2.2 for details), and

• Unit is not operating in Fan Mode.

6) OFAN OPERATIONS

• OFAN starts together with COMP in general.

12-8

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.5.1 Cooling

Mode: Cool, Auto (at Cooling)
Temp: Selected desired temperature.
Fan: HIGH, MED, LOW
Timer: Any
I Feel: On or Off

Control function

Maintains room temp at desired level by comparing RT and SPT.

(RT - SPT) [oc]

+3

+2

+1

0

-1

-2

ON

OFF

ON

OFF

USER FAN SPEED

ON

OFF

COMP
(WVL)

OFAN

IFAN

RV

Note:

1) IFAN is always running at High, Medium or Low speed selected by user.

2) In IFEEL mode, the Room Temperature (RT) is the RCT from a R/C. Otherwise, the
RT is the RAT from the Room Thermistor.

12-9

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.5.2 Cooling with Autofan

Mode: Cool, Auto (at cooling)
Temp: Selected desired temperature
Fan: Auto
Timer: Any
I Feel: On or Off

Control function

Maintains room temp at desired level and controls the IFAN speed for optimal comfort.

(RT - SPT) [oc]

+3

+2

+1

0

-1

-2

ON

OFF

ON

OFF

H

L

M

ON

OFF

COMP

(WVL)

OFAN

IFAN

RV

12-10

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.6 Heating Mode

12.6.1 Heating Mode - General

• In heating Mode, temp. compensation schedule will be activated for wall mounted

units.

SPT [oc]

Add to SPT

I-FEEL ON I-FEEL OFF

18 ≤ SPT ≤ 27 0

o

c +2 oc

27 < SPT ≤ 30 0

o

c +3 oc

Notes :

• No compensation will be activated in Forced operation modes

12.6.2 IF operating rules

• As a general rule for RC and SH groups, when COMP is ON, excluding

protection modes, IFAN will be switched ON if

• ICT > 35

o

c or
at the IFTC 30 sec after the COMP is switched ON. In
this case, the IFAN will be started at low speed.

Notes :

1) In SH or RC group, if HE is set to OFF due to low ICT, IFAN will be

switched to LOW and will be turned OFF after 30 sec.

2) An exception to this rule (4.0.3.a) is the Back-up mode for SH.

• In RC and SH groups, whenever COMP & HE are both
OFF, excluding protection modes, IFAN operation will be according

to the following:

In other models IFAN will operate in low speed for 30 sec and then stop. If

COMP is OFF for more than 3 minutes and IFEEL Mode is inactive, IFAN will
operate in low speed according to the following graph:

IFAN Speed

Any

Low

Stop

30 35 40

EMD/ELD

EMD/ELD

ICT [oc]

15 20 25

General :
For WAX :

SPT+4 SPT+6 ICT

[

o

c

]

ON

OFF

IFAN (Low Speed)

12-11

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.6.3 HE operation

• For all Groups, HE can be ON only when IFAN is ON.

• For all Groups, HE switches to OFF when ICT > 50

o

c, and is activated

again when ICT ≤ 45

o

c.

• In SH or RC group, HE operation is limited by the following graph:

• Back-up mode for SH group

After COMP has been working for 5 minutes, HE & IFAN are activated even
if the ICT is still below 35

o

c. This situation is called Back-up Mode. Both

HE & IFAN will work in Back-up Mode until the ICT reaches 35

o

c. Then, the

operation goes on in the usual mode .

HE

ON

OFF

30

45 50

ICT [oc]

15

General :
For WAX :

35
20

40

12-12

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.6.4 Heating, RC or SH Group

Mode: Heat, Auto (at heating)
Temp: Selected desired temperature
Fan: HIGH, MED, LOW
Timer: Any
I Feel: On or Off

Control function
Maintains room temp. at desired level by comparing RAT or RCT to SPT.

(RT - SPT) [oc]

+2

+1

0

-1

-2

-3

ON

OFF

ON

OFF

H/M/L

OFF

L

ON

OFF

Note 1 Note 2

COMP
(WVL)

HE1

HE2

IFAN

ON

OFF

RV

12-13

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.6.5 Heating, RC or SH Group with Autofan

Mode: Heat, Auto (at heating)
Temp: Selected desired temperature
Fan: Auto
Timer: Any
I Feel: On or Off

Control function
Maintains room temp at desired level by controlling COMP, IFAN and OFAN.

(RT - SPT) [oc]

+2

+1

0

-1

-2

-3

ON

OFF

ON

OFF

H

OFF

L

M

ON

OFF

Note 1 Note 2

COMP

(WVL)

HE1

HE2

IFAN

RV

ON

OFF

12-14

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.6.6 OFAN operation is controlled by the graph below when

1. (RAT ≥ SPT – 2oc), AND

2. (ICT ≥ 45

o

c), AND

3. (COMP is ON)

Otherwise, OFAN runs together with COMP.

OCT [oc]

+3

+2

+1

0

-1

OFAN

ON

OFF

12-15

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.7 Automatic Cooling or Heating

12.7.1 Automatic Cooling or Heating - General

• Switching-temperature between Cooling and Heating is SPT ± 3oc.

• Autofan in Automatic Cooling and Heating Mode will activate “Cooling

with Autofan Mode” and “Heating with Autofan Mode” respectively.

• When the Auto Mode is started with SPT +/-0

o

c, the unit will not select
Auto Heat or Auto Cool mode immediately. Instead, the unit will be in
a temporary Fan Mode with IFAN operating at low speed.
The proper Auto Heat mode or Auto Cool will be started whenever the RT
reaches SPT-1

o

c or SPT+1oc respectively.

• For RC & SH units, 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 3 min
Auto Heat to Auto Cool 4 min

• When unit is changed form Cool/Dry mode to Auto Mode, the unit

will continue to operate at (Auto) Cool Mode until the conditions for
switching from Auto Cool to Auto Heat are satisfied.

Similarly, when unit is changed from Heat Mode to Auto Mode, the

unit will continue to operate at (Auto) Heat Mode until the conditions
for switching from Auto Heat to Auto Cool are satisfied.

12-16

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.7.2 Auto Cooling or Heating, RC or SH Groups

Mode: Auto
Temp: Selected desired temperature
Fan: Any
Timer: Any
I Feel: On or Off

Control function
Maintains room temp at desired level by selecting between cooling and heating modes.

(RT - SPT) [oc]

+3

+2

+1

0

-1

-2

-3

ON

OFF

ON

OFF

H/M/L/OFF

L/OFF

ON

OFF

ON

OFF

COMP

& OFAN

HE1

HE2

IFAN

RV

H/M/L/OFF

L/OFF

USER FAN SPEED H/M/L/OFF

L/OFF

Auto Cool Mode Auto Heat Mode

> 4 min > 3 min

> 3 min > 2 min

(3) (3)

(4)

(4)

(5)

Auto Heat Mode

12-17

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.8 Dry Mode

12.8.1 Dry, ST or RC group

Mode: Dry
Temp: Selected desired temp
Fan: Low (automatically selected by software)
Timer: Any
I FEEL: Any

Control function
Reduce room humidity with minimum temp. fluctuations by operating in Cool Mode with
low speed IFAN.

Notes :

• When Dry is ON, the COMP is forced OFF for 3.5 min (longer than the
3 min Min COMP-Off time) after every 15 min of continuous COMP
operation.

• When Dry is OFF, the COMP is forced ON for 6 min (longer than the 3
min Min COMP-On time) after every 15 min of continuous COMP OFF
time.

• When Dry is changed from ON to OFF or vice versa, the limits
mentioned in (1) & (2) are ignored. The COMP operation is only
controlled by the 3 min Min OFF time and 1 min Min ON time.

• In Dry Mode, IFAN is LOW when COMP is ON, and is OFF when
COMP is OFF.

DRY

(RT - SPT) [oc]

+2

+1

0

-1

-2

ON

OFF

ON

OFF

LOW

OFF

DRY-ON

DRY-OFF

ON

OFF

Time [min]

10

20

30

40 50

Max 15 minutes

3.5
min

Note1

6 min

Note 2

COMP

& OFAN

HE1

& HE2

IFAN

RV

Max 15 minutes

5 minutes COMP

ON time

12-18

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.9 Protection

12.9.1 Cooling Mode Protections

Indoor Coil Defrost

Mode: Cooling, Dry, Auto
Temp: Selected desired temp.
Fan: Any
Timer: Any
I Feel: On or Off

Control Function
Protect the indoor coil from ice formation at low ambient temperature.

t1 = 5 min minimum for each COMP starting
t2 = OFAN cycling (alternate between ON and OFF every 30 sec) for 20 min
maximum
t3 = COMP and OFAN stop for 10 min minimum

Notes:

• When J7 is closed (connected), OFAN cycling is cancelled and the
set temperature for COMP & OFAN cut-out and cut-in are changed.
COMP & OFAN are forced OFF when ICT =< -6

o

c, and are kept OFF

until ICT > 14

o

c.

• For WAX model, the defrost processes is simpler. When J7 is open,
COMP & OFAN are forced OFF when ICT =< -1

o

c, and are kept OFF

until ICT > 5

o

c. When J7 is closed, the WAX defrosting process is the
same as that of the other models (R.H.S. of the graph above). In both
cases, the ICT checking in t2 and t3 are not applied.

ICT [oc]

+2

ON

OFF

ON

OFF

t1 t2 t3

COMP

OFAN

+1

+5

+14

0

-1

-6

ON

OFF

IFAN

J7 OPEN J7 CLOSED

t1 t1

12-19

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.3.2 High Pressure Protection

Mode: (Auto) Cooling or Dry
Temp: Selected desired temp.
Fan: Any
Timer: Any
I Feel: On or Off

Control Function
To protect the COMP from the high pressure built-up in the outdoor coil during normal
cooling operation, by switching OFF the IFAN and COMP.

OCT [oc]

Any

OFF

Any

ON

Any

Blink

ON

COMP

OFAN

IFAN

OPER

LED

52

55

61

66

L

COMP is forced OFF

OFAN is forced ON

IFAN forced

to LOW

68

OFAN follow operation of

COMP

COMP is forced OFF

OFAN is forced ON

For all models except WAX & P2000 For WAX & P2000 models

Note:

• The ICT is also monitored during Cool and Dry mode, in case the RV control circuit
is faulty. Whenever ICT reaches 70

o

c, which indicates a high pressure in the indoor
coil, the COMP will be forced off automatically. The COMP can be turned on again only
after the ICT is under 70

o

c again and after the 3 min COMP ON delay time. The OPER

LED will not blink in this case.

12-20

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.9.3 Heating Mode Protections

Outdoor coil Deicing (excluding RH Group)

Mode: Heating, Auto (at heating)
Temp: Selected desired Temp
Fan: Any
Timer: Any
I FEEL: Any

Control function

Protects the Outdoor coil from ice formation by controlling COMP & RV operation.

Scope

This new deicer is designed to operate at extreme temp conditions. The deicing cycle
could be triggered from:

1. OCT temp and time between two consecutive deicing cycles.

2. Detection of ice forming by change of the OCT temp.

Both algorithms adjust the time between deicing cycles to optimize the A/C
performance. The algorithm will automatically increase the time between deicing cycles
and reduce the deicing cycle as needed.

The algorithm uses EEPROM data to operate.

12-21

CONTROL SYSTEM

SM DELTA 1-E.0 GB

Deicing procedure

OCT [oc]

ON

OFF

ON

OFF

ON

L

ANY

COMP

OFAN

RV

IFAN

DST

(DDT)

0

12

OFF

HEs are forced ON

DOC

ANY

ON

HE

36s 36s

DT

30s

max 12 min.

Note 3

DI (note 1)

DI (note 2)

30s

3 min 3 min

IFAN

OFF

ANY

HE

OFF

ANY

all SH units

except WAX

RC or WAX units

HEs are forced OFF

IFAN is forced to Low Speed

BLINK

ON

OPER

LED

Notes :

• At the first COMP activation after SB or OFF, if (OCT < 0

o

c), then DI = 10

min, else DI = 40 min.

• In the following Deicing cycles, the time interval between two Deicing
cycles activation is between 30 to 80 min (refer to the flow chart).

• For RC group, HEs are forced OFF. IFAN operation is as in Heat

Mode, Sect 4.0.3.a, i.e. IFAN will be set to OFF when ICT<30

o

c.

For WAX, the IFAN is simply forced OFF.

• For SH group, HEs are forced ON and IFAN is forced to operate in Low
speed, regardless of the ICT and difference between RAT & SPT.

12-22

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.9.4 High pressure protection (excluding RH Group)

Mode: (Auto) Heating
Fan: Any
Timer: Any
I Feel: On or Off

Control Function

Protect the Compressor from high pressure by switching OFF the OFAN and COMP.

ICT [oc]

Any

Off

Any

Off

COMP

OFAN

52

55

61

66

COMP is forced OFF

67

OFAN is force

Off

COMP is forced OFF

For all models except WAX For WAX model

ON

BLINK

OPER

LED

Notes:

• IFAN, HE1 and HE2 will be activated according to the relevant
Heating Mode Sect.

• In case of any malfunction in the relay control circuit, the OCT is also
monitored during heating mode. Whenever OCT reaches 70

o

c, which indicates
a high pressure in the outdoor coil, the COMP will be forced off automatically.
The COMP can be turned on again only after the 3 min COMP ON delay and the
OCT is under 70

o

c. The OPER LED will not blink in this case.

12-23

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.10 Timer

Mode: Any
Temp. Selected desired temp
Fan: Any
Timer: Timer On, Timer Off
I Feel: On or Off

Control function

• Starts or stops the unit operation after pre-set time. If RC-1 is used,
the timer setting will be (0.5 - 24 Hr) from the moment the timer is set.
The minimum resolution is 30 minutes.

If RC-2 or later version of remote controls is used, the timer

setting will be (0:00 - 23:50) real time with 10 minutes resolution.

• After power failure, all pre-set timers are cleared. The system is
forced to STBY mode and the Timer LED indicator is blinked to
indicate the situation. The LED keeps blinking until the timer settings
can be reloaded from a R/C message.

Note: If all timers are inactive, the system will not be forced
OFF after the power failure. The last OPER/STBY status will
be loaded from the EEP instead.

• When the A/C receives any valid message from a R/C, the current
ON/OFF timer settings will be replaced by the new timer settings in
the R/C message.

Note: The following timer related operations will not affect the
A/C operating mode (Heat/Cool/Auto/Dry/Fan) setting.

• Set ON/OFF timer

• Clear ON/OFF timer

• R/C ON Timer is time-up

• R/C OFF Timer is time-up

E.g. When a STBY A/C unit (with Cool Mode setting in its EEP) is

turned on by the ON-TIMER of a R/C with heat mode setting,
the A/C will start in Cool Mode.

12-24

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.11 Forced Operation

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

Forced operation

mode

Pre-set Temp for :

WMF, WMN, WNG models

Cooling 22°C

Heating 28°C

Note:

• While under the forced operation, the temperature compensation
schedule.

• The forced operation is activated when the mode button on the
Display Board is used to switch the unit to Cool or Heat mode.

• The IFAN is always set to Autofan Speed in forced operation.

12-25

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.12 Sleep Mode

Mode: Any
Temp: Set – desired temperature selected
Fan: Any
Timer: Interact with Sleep Timer as described in sect 12.2
I Feel: On or Off

The Sleep mode is activated by using the sleep button on the R/C. In Sleep Mode,
the unit will automatically adjust the SPT to turn up/down the room temperature (RT)
gradually to provide maximum comfort to the user in sleep.

Sleep is treated as TIMER function. Therefore, the TIMER LED is activated similar to
TIMER function.

12.12.1 Adjustment in Sleep Mode

1. in cool, auto cool or dry modes, the SPT adjustment is positive (from 0 to +3oc).

2. In heat or auto heat modes, the SPT adjustment is negative (from 0 to -3

o

c).

3. In other modes, there is no SPT adjustment.

4. The SPT adjustment is cancelled when the Sleep mode is cancelled.

Note: If Off-timer is active, the unit may go to SB before or after 7 hours of

sleep operation.

SPT

Time [Hr]

485326

Start

Sleep

7

RT

SPT-1

SPT-2

SPT-3

SPT+2

SPT+1

SPT+3

1

7 Hours Sleep operation

for Normal Sleep Mode

Unit is turned to SB

after Sleep

Cool, Dry modes

Heat mode

12-26

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.12.2 Time adjustment in Sleep Mode

The user can make use of the Off-Timer to extend the Sleep Time from 7 hours to 12
hour (max). The operation of the new “Extended Sleep Mode” is illustrated by the
graphs below.

Case 1 is the Standard Sleep Mode, which is the only sleep mode in previous version
of MCU. The A/C unit simply works for 7 hours, then goes to SB.

Case 2 is the new Extended Sleep Mode. If an active Off-Timer is set to turn off the
A/C between 7-12 hour, relative to the starting of Sleep, the Sleep time is extended.

And, instead of going to SB at the 7th hour, the A/C will work until reaching the Off-time.

Case 3 is an exception to case 2. The Sleep Mode will not be extended to the Off-Time
when the Off-Timer is preceded by an On-Timer, which is also between 7-12 hour.

Oper

Time [Hr]

4 8 10 1226

Start

Sleep

7

Case 1 : Standard Sleep Mode

Condition : Off-timer is not set or is beyond 12 hour.

SB

Oper

Time [Hr]

4 8 10 1226

Start

Sleep

7

Case 2 : Extended Sleep Mode

Condition : Off-timer is set at 7-12 hour.

SB

Off-timer

Oper

Time [Hr]

4 8 10 1226

Start

Sleep

7

Case 3 : Exception to Case 2

Condition : Off-timer is set at 7-12 hour

On-timer is set at 7-12 hour and before Off-timer

SB

Off-timerOn-timer

12-27

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.13 Clogged Air Filter

Filter LED ON after 512 HR.

Filter LED is turned OFF, and the Filter Timer is restarted by pressing the reset button.

12-28

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.14 Controller Self-Test Procedure

12.14.1 By Shorting Test Jumper J1

RC/ST TEST

MODEL

CONFIGURATION

TEST

STEP MOTOR TEST

FREQUENCY

TEST

LEDS OFF

LEDS ON TEST

AUTO RELAY

TEST

SHORT JUMPER

J1

(CONTROL PCB)

PRESS ON

POWER

BUTTON

PRESS ON

MODE BUTTON

INDOOR FAN

SPEED TEST

SELF-TEST FLOW CHART

Step 1

Step 2

Step 3

FOR CONTROLLER (VERSION 4V5 OR HIGHER)

COOL

HEAT

COMPRESSOR

OUTDOOR FAN

R.V.

LOW

MEDIUM

HIGH

TIMER

OPERATE

STANDBY

BUZZER TEST

(ONE BEEP SOUND)

REMOTE CONTROL

TO CPU COMUNICATION

(TWO BEEPS SOUNDS)

THERMISTOR ANALOG

VOLTAGE CHECKING

EEPROM MEMORY

TEST

END OF SELF

TEST

PRESS ON RESET

BUTTON

PRESS ON FAN

BUTTON ON THE

REMOTE CONTROL

PRESS ON MODE

BUTTON

PRESS ON MODE

BUTTON

Step 4

Step 5

Step 6

Step 7

Step 8

DISCONNECT

JUMPER

J1

12-29

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.14.2 By Remote Control Settings:

a. 1: TURNING ON THE POWER.

Turn ON the power, make sure that the unit is in operation.

b. STEP 2 : ENABLE SELF-TEST MODE

• Use the remote control to send the first settings to display / indoor unit

HEAT mode, HIGH IFAN, set temperature to 16 ºC, no I-FEEL Sleep or
any other timer settings are needed.

• Cover the IR transmitter components in the remote control so that it will
not transmit the signals to the indoor unit display.

• Use the remote control to send the second settings to display / indoor unit
COOL mode, LOW IFAN, no I-FEEL Sleep or any other timer settings.

• Uncover the remote control IR transmitter and change the temperature
settings. If the display/indoor unit receive the settings properly the
following steps will start:

c. STEP 3: MODEL SETTING CONFIRMATION

• The STAND-BY and COOL LEDS will indicate the operation mode as
follows:

OPERATION MODE STAND-BY LED COOL LED

ST ON OFF

RC OFF OFF

SH OFF ON

RH ON ON

• Testing the Model configuration. Selected by the COMP, STAND-BY,
TIMER LEDS and FILTER will indicate the model configuration as follows
(the relevant line for this manual is highlighted):

MODEL COMP OPERATE LED TIMER LED FILTER LED

WNG ON OFF OFF OFF
WMN1 ON ON OFF ON
WMN4 OFF OFF ON OFF

WMN2/WHX OFF ON OFF ON

WMN3 OFF ON ON ON

In this term the step motor will turn to HOME POSITION.

12-30

CONTROL SYSTEM

SM DELTA 1-E.0 GB

d. STEP 4 : AUTO LED WALK TEST.

• All the LEDS will turn OFF.

• All the LEDS will turn ON for 1 second one by one in the following

sequence:

STAND-BY  OPERATE  TIMER  FILTER  COOL  HEAT.

• In PRX all the LEDS will turn ON for 1 second one by one in the following

sequence : 18 °c  20 °c  22 °c  24 °c  26 °c  28 °c  30 °c 
High IFAN  Auto IFAN  Med IFAN  Low IFAN  STAND-BY
TIMER  FILTER COOL HEAT.

e. STEP 5: AUTO REALY WALK TEST:

• All relays will energize one by one in the following sequence:

COMPRESSOR  OUTDOOR FANR. V.  HEATER 1  HEATER 2
 INDOOR WATER PUMP  SWING or OUTDOOR WATER PUMP 
INDOOR FAN: LOW  MID  HIGH.

• When the relay walk test is completed, the next test will start
automatically.

f. STEP 6: FREQUENCY TESTING:

• If the frequency measuring process fails the COOL LED will turn ON.
In order to move to the next step, press ON/OFF button on the remote
control.

g. STEP 7: INPUT TEST.

• The test purpose is to check the analog real time indicators (thermistors,
LEVEL and clock) according to the table below.

LED Indicator Condition for LED to be ON

STBY LED Room thermistor ≠ 25°c
OPER LED Indoor coil thermistor ≠ 25°c
TIMER LED Outdoor coil thermistor ≠ 25°c
FILTER LED Clock
COOL LED LEVEL 2&3
HEAT LED LEVEL 4

h. STEP 8: TIMING RESET TEST (WATCH DOG).

• The test purpose is to verify that the CPU rise time after power failure
is between 1 to 3 sec, test results are indicated on the LEDS : STAND­BY,OPER, TIMER and FILTER turning ON one by one.

• The results of the test are coded as follows:

Pass condition:

1 sec - STAND-BY and OPER are turned ON

2 sec - STAND-BY, OPER and TIMER are turned ON

12-31

CONTROL SYSTEM

SM DELTA 1-E.0 GB

Fail condition:

0 sec - STAND-BY is turned ON

3 sec - STAND-BY, OPER, TIMER and FILTER are turned ON

• When the timing reset test is completed, the next test will start
automatically.

i. STEP 9: MEMORY TEST (EEPROM)

• The test purpose is to check if the memory is functioning correctly. The test
result is reported by using the STAND-BY and FILTER LEDS:

LED Indicator Condition for LED to be ON

STAND-BY LED Test passed

FILTER LED Test failed

AT THIS POINT THE SELF-TEST IS COMPLETED.

In order to terminate Self-Test mode the User can change the unit setting from COOL
Mode, LOW FAN to COOL Mode, MED FAN or to wait without using the remote control
for 60 sec.

Values of Sensors Temperature VS. Voltage (DC)

Temp. (*C) Voltage (V) Temp. (*C) Voltage (V) Temp. (*C) Voltage (V) Temp. (*C) Voltage (V)

-20 4.554 2 3.744 24 2.555 46 1.487

-19 4.529 3 3.695 25 2.5 47 1.447

-18 4.502 4 3.646 26 2.445 48 1.409

-17 4.475 5 3.595 27 2.391 49 1.371

-16 4.446 6 3.544 28 2.338 50 1.334

-15 4.417 7 3.492 29 2.284 51 1.298

-14 4.386 8 3.439 30 2.232 52 1.263

-13 4.354 9 3.386 31 2.18 53 1.228

-12 4.322 10 3.332 32 2.128 54 1.195

-11 4.287 11 3.278 33 2.077 55 1.162

-10 4.252 12 3.223 34 2.027 56 1.13

9 4.216 13 3.168 35 1.978 57 1.099

-8 4.178 14 3.113 36 1.929 58 1.069

-7 4.14 15 3.058 37 1.881 59 1.04

-6 4.1 16 3.002 38 1.834 60 1.011

-5 4.059 17 2.946 39 1.798 61 0.983

-4 4.017 18 2.89 40 1.742 62 0.956

-3 3.974 19 2.833 41 1.698 63 0.929

-2 3.93 20 2.777 42 1.654 64 0.904

-1 3.885 21 2.722 43 1.611 65 0.879

0 3.839 22 2.666 44 1.569 66 0.854

1 3.792 23 2.61 45 1.527 67 0.831

12-32

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.15 On Unit Indicators and Controls

STAND BY

INDICATOR

Lights up when the Air Conditioner is connected to power and
ready to receive the R/C commands
Blinks continuously in case of any thermistor failure.

OPERATION

INDICATOR

Lights up during operation.
Blinks for 300 ms, to announce that a R/C infrared signal has
been received and stored.
Blinks continuously during

• OCT High Pressure Protection Mode

• ICT High Pressure Protection Mode

• Deicing in Heating Mode

• Water Over Flow in ECC Model

TIMER INDICATOR Lights up during Timer and Sleep operation.

FILTER INDICATOR

Lights up when Air Filter needs to be cleaned.
Blinks during Water Over Flow in MBX/P2000 models.

COOLING

INDICATOR

Lights up when system is switched to Cool Mode by using the
Mode Switch on the unit.
Show the thermistor status in Diagnostic Mode

HEATING

INDICATOR

Lights up when system is switched Heat Mode by using the
Mode Switch on the unit.
Show the thermistor status in Diagnostic Mode.

MODE BUTTON

(Cool, Heat, SB)

Use to cycle the operation mode of the A/C unit among COOL,
HEAT and SB modes, without using the R/C.
Every time this switch is pressed, the next operation mode is
selected, in this order :
SB  Cool Mode  Heat Mode  SB  ...
Press this button continuously for 5 sec or more to start the
Diagnostic Mode.

RESET / FILTER

BUTTON

When the Filter LED is ON, press to turn off the Filter LED
after a clean filter has been reinstalled.
When the Filter LED is OFF, use this button to enable/disable
the buzzer announcer.

12-33

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.16 Clock Random Delay From 0 to 2.5 seconds

0 = Clock Switch Open
1 = Clock Switch close

The Clock is activate 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

OFF 0 1 ON

OFF by

interrupt

(1)

1 0 OFF

ON by

interrupt

(1)

01ON

Notes :

1. Clock can be interrupted by :

• R/C - POWER ON/OFF Push-button.

• R/C - TIMER.

• R/C - SLEEP.

• A/C - MODE SWITCH.

2. Any change in the CLOCK level during the first 6 sec after the system
Reset is ignored.

12-34

CONTROL SYSTEM

SM DELTA 1-E.0 GB

12.2 System Diagnostics

Pressing Mode button for 5-10 seconds in SB or any other operation mode will activate
diagnostic mode by the acknowledgment of 3 short beeps and lighting of COOL and
HEAT LEDs.

In diagnostic mode, system problems will be indicated by blinking of Heat & Cool LEDs.

The coding method will be as follow:

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 Problem ○○○○○

1 RT1 is disconnected ○●●●●

2RT1 is shorted ○●●●○

3 (Reserved) ○●●○●

4 RT2 is disconnected ●○●●●

5RT2 is shorted ●○●●○

6 (Reserved) ●○●○●

7 RT2 temp reading doesn’t change ●○●○○

8 RT3 is disconnected ●●○●●

9RT3 is shorted ●●○●○

10 (Reserved) ●●○○●

11 RT3 temp reading doesn’t change ●●○○○

12 RT2 & RT3 temp reading doesn’t change ●○○○○

○ - ON, ● - OFF

Notes:

1. If faults occur in more than one thermistor (except case number 12 on the
table above), only one fault will be indicated according to the following order:
RT3, RT2, RT1.

2. A/C will jump out to normal mode if sending a command by the R/C in the
system diagnostics mode. If this command from the R/C contain a Group ID, this
ID will become the new Group ID of the ELCON unit.

13-1

TROUBLESHOOTING

SM DELTA 1-E.0 GB

13. TROUBLESHOOTING

 SYMPTON PROBABLE CAUSE CORRECTIVE ACTION

1. The stand-by
indicator (red led) on
the central control
display panel doesn’t
light up.

There is no correct voltage between
the line and neutral terminals on
main P.C.B

-If the voltage is low repair power
supply.

-If there is no voltage repair general
wiring.

-If there is correct voltage replace main
or display P.C.B’S

2. The operation
indicator (green led)
on the central control
display panel does
not light up.

The remote control batteries are
discharged

-Replace batteries of the remote
control.

3. The operation
indicator (green led)
does not light up
when starting from
unit.

Check main P.C.B and display
P.C.B

-Replace P.C.B if necessary.

4. The indoor fan does
not function correctly.

Check the voltage between indoor
fan terminals on the main P.C.B

-If there is voltage replace capacitor or
motor.

5. The outdoor fan does
not function correctly.

Check the voltage between out door
fan terminals on the main P.C.B

There is voltage between outdoor
fan terminals on the outdoor unit.

There is no voltage between
outdoor fan terminals on the
outdoor unit.

-If there is no voltage replace main
P.C.B

-Replace capacitor or motor.

-Check and repair electrical wiring
between indoor and outdoor units

6. The compressor does
not start up.

Check voltage on compressor
terminals on the outdoor unit. (with
ammeter)

Check if there is correct voltage
between compressor terminals on
the outdoor unit.

-If no voltage replace main P.C.B

-If low voltage repair power supply.

-If the voltage correct replace capacitor
or compressor.

-If there is no voltage repair electrical
wiring between indoor and outdoor
units.

7. The refrigeration
system does not
function correctly.

Check for leaks or restrictions.
With ammeter. Pressure gauge or
surface thermometer.

-Repair refrigeration system and charge
refrigerant if necessary.

8 No cooling or heating

only indoor fan
works.

Outdoor fan motor faulty or other
fault caused, compressor overload
protection cut out.

-Replace P.C.B.

-Outdoor fan blocked remove
obstructions.

13-2

TROUBLESHOOTING

SM DELTA 1-E.0 GB

 SYMPTON PROBABLE CAUSE CORRECTIVE ACTION

9. Only indoor fan and
compressor working.

Outdoor fan blocked. -Remove obstructions.

10. Only indoor fan
working.

-Run capacitor of outdoor fan motor
faulty.

-Windings of outdoor fan are
shorted.

-Replace capacitor.

-Replace motor.

11. No cooling or heating
takes place, indoor
fans working.

-Overload safety device on
compressor is cut out (low voltage
or high temperature).

-Compressor runs capacitor faulty.

-Compressor windings are shorted.

-Check for proper voltage, switch off
power and try again after one hour.

-Replace compressor capacitor.

-Replace compressor.

12. No air supply
at indoor unit,
compressor operates.

-Indoor fan motor is blocked or
turns slowly.

-Indoor fan run capacitor faulty.

-Motor windings are shorted.

-Check voltage, repair wiring if
necessary.

-Check fan wheel if it is tight enough on
motor shaft, tighten if necessary.

13. Partial, limited air
supply at indoor unit.

Lack of refrigerant (will
accompanied by whistling noise)
cause ice formation on indoor unit
coil in cooling mode.

-charge the unit after localizing leak.

14. Water accumulates
and over flow from
indoor unit section.

Drain tube or spout of drain pan
clogged.

-Disassemble plastic drain tube from
spout of indoor unit drain pan.

15. Water dripping from
outdoor unit base, (in
heating mode).

Water drain outlet is clogged. -Open outdoor unit cover clean out

water outlet clean the base inside
thoroughly.

16. Freeze-up of outdoor
coil in heating mode,
poor heating effect
in room, indoor fan
operates.

-Faulty outdoor thermistor.

-Faulty control cable.

-Outdoor temperature is below
design conditions.

-Outdoor unit air outlet is blocked.

-Replace thermistor.

-Repair control cable.

-Shut unit off, it cannot work properly.

-Remove obstructions.

17. Unit is in heat mode
but operating in
cooling.

-Faulty RV coil.

-RV coil is ok valve is stuck position.

-Replace RV coil.

-Replace the reversing valve.

14-1

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14. EXPLODED VIEWS AND SPARE PARTS LISTS

14.1 Indoor Unit: DELTA 18, 21, 24

14-2

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.2 Indoor Unit: DELTA 18, 21, 24

. Item Description Quan.

1 465020098 Front Plate/Delta 18&24 Fagor 1
2 452919800 Filter 2
3 4518113 Fiber Filter Assy. 1
4 465720204 Silk-Screen Front Frame Assy./Delta 18-24 Fagor Electra 1
5 452919600 Screw cover 3
6 462350084 Evaporator Assy./WNG21/24 R410A 1

453046600 Evaporator Assy./WNG18 R410A 1
7 452917300 Air outlet 1
8 465210009 Drain Pipe for Israel /WNG18/24/30 1
9 452917500 Horizontal flap A 1
9 452917600 Horizontal flap B 1

10 452930700 Vertical flap A 12
10 452918200 Vertical flap B 2

11 4518662 Bearing assy fan 1
12 453024900 Impeller fan 1
13 453053800 Base assy./WNG18 1
14 452920100 Mount bracket/WNG-18 1
15 452919400 Joint/Unit housing 1
16 453134300R Resin Motor 26W/WNG24 LED (DELTA21,24) 1

453116500R Resin Motor 18W/WNG18 LED (DELTA18) 1
17 452918800 Cover/motor 1
18 453050300 STEP MOTOR B 1
20 4519147 Power Cord Clip 1
20 452919200 Tie/connection Wire 1
21 467300197R Display Board/Delta 18 F 1
22 452919100 Support/sensor 1
22 4516263 SENSOR BASE 1
23 467300201R Controller/Delta F 18 S/W:10V14 1
24 438082 Thermistor Indoor coil BLACK. 1
25 467400025 Indoor Air Inlet Temperature Sensor 1
26 452919500 Cover/terminal 1
28 4520416 Defrost cable EXPORT UNITS. 1
29 438600R Remote controller RC3-RC 973-600-00 1
30 4518651 Cover Side Motor 1
31 453057900 Gear BOX ASSY 1
34 452918700 Support/horizontal louver 2
36 4518657 TUBE LOCK 1

14-3

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.3 Outdoor Unit: GC 18 ST

14-4

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.4 Outdoor Unit: GC 18 ST

. Part . Description Quantity

1 4517144 FAN COVER PP+UV 1
2 452795700 PAINTED LEFT CABINET ASSY 1
3 452989200 Base welding plate assy. 1
4 4516786 PAINTED RIGHT CABINET ASSY 1
5 4516985 Partition Plate 1
6 455000506 Compressor Capacitor With Screw 45uF (CBB65) 1
7 455000104 Double patch Capacitor for fan motor 4uF (CBB61S) 1
8 204107 Cable clip Nylon 2
9 4521744 3 Poles Terminal Block (4mm2) 1

10 4522469 4 LEVEL TERMINAL BLOCK 1

11 4521733 3 Poles Terminal Block ( 6mm2) 1
12 4521340 Controller Box 1
13 4525427 Clip for capacitance(d=50) 1
14 453089900 Compressor Assy.PA200X2CS-4KU1 1
15 4519000 Spring of compressor heater 1
16 4517345 COMPRESSOR WIRE ASSY. 2.5mm2 1
17 4526922 heater for compressor 1
18 4516766 PAINTED VALVE PLATE ASSY 1
19 4526530 LOW PRESS VALVE (R410A) 1
20 4526531 High press valve(R410A) 1
21 4526931 filter welding assy. 2 1
22 4526839 filter welding assy. 1
23 4523145 R.lifter 1
24 452821900 Capillary assy. for cooling 1
25 4523338 Accumulator assy. 1
26 452977200 Low pressure pipe 1
27 452976200 Suction pipe 1 1
28 4526291 Muffler 1
29 4525938 PAINTED RIGHT-BACK CABINET ASSY 1
30 452977000 Condenser pipe assy. 1
31 452976800 Discharge pipe 2 1
32 4517028 PAINTED LEFT-BACK GRILL 1
33 4516758 SMALL HANDLE 1
34 452976000 Discharge pipe 1 1
35 452821300 Condenser-Distributing Soldering Assy.GC-18ST R410A 1
36 452988800 Insulation for compressor PA215/240 1
37 4526509 MOTOR BRAKECT (new) 1
38 4526864 motor YYK85E-6 1
39 4526585 connect for motor backet 1
40 4526510 FAN D=460mm (3 blade) 1
41 4523141 Hexagon locked nut M10 1
42 4516788 PAINTED TOP COVER ASSY 1

14-5

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.5 Outdoor Unit GC 18 RC

14-6

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.6 Outdoor Unit: GC 18 RC

. Part . Description Quantity

1 4517144 COVER PP+UV 1
2 452795700 PAINTED LEFT CABINET ASSY 1
3 452989200 Base welding plate assy. 1
4 4516786 PAINTED RIGHT CABINET ASSY 1
5 4516985 Partition Plate 1
6 455000506 Compressor Capacitor With Screw 45uF (CBB65) 1
7 455000104 Double patch Capacitor for fan motor 4uF (CBB61S) 1
8 204107 Cable clip Nylon 2
9 4524907 contactor (CJX9B-25S/01) 1

10 4521744 3 Poles Terminal Block (4mm2) 1
11 4522469 4 LEVEL TERMINAL BLOCK 1
12 4521733 3 Poles Terminal Block ( 6mm2) 1
13 4521340 Controller Box 1
14 4525427 Clip for capacitance(d=50) 1
15 453089900 Compressor Assy.PA200X2CS-4KU1 1
16 4519000 Spring of compressor heater 1
17 4517345 COMPRESSOR WIRE ASSY. 2.5mm2 1
18 4526922 Heater for compressor 1
19 4516766 PAINTED VALVE PLATE ASSY 1
20 4526530 LOW PRESS VALVE (R410A) 1
21 4526531 High press valve(R410A) 1
22 4526931 filter welding assy. 2 1
23 4526839 filter welding assy. 1
24 4523145 R.lifter 1
25 4526840 Single-way welding assy. 1
26 4523338 Accumulator assy. 1
27 452976500 Suction pipe 2 1
28 452976600 Low pressure pipe 1
29 452976400 Condenser pipe assy. 1
30 4526291 Muffler 1
31 4525938 PAINTED RIGHT-BACK CABINET ASSY 1
32 4526522 FOUR-WAY VALVE R410A 1
33 4526589 4-Way Valve Coil FOR R410A 1
34 452976100 Discharge pipe 2 1
35 452987800 4-way welding assy. for GC18RC R410A PA200 1
36 4517028 PAINTED LEFT-BACK GRILL 1
37 4516758 SMALL HANDLE 1
38 452976000 Discharge pipe 1 1
39 452796500 Condenser-Distributing Soldering Assy.GC-18RC R410A 1
40 452988800 Insulation for compressor PA215/240 1
41 452976200 Suction pipe 1 1
42 4526509 MOTOR BRAKECT (new) 1
43 4526862 motor YYK85E-6B for GC18RC 1
44 4526585 connect for motor backet 1
45 4526510 FAN D=460mm (3 blade) 1
46 4523141 M10 Hexagon locked nut M10 1
47 4516788 PAINTED TOP COVER ASSY 1

14-7

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.7 Outdoor Unit: GC 21 RC

14-8

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.8 Outdoor Unit: GC 21 RC

. Part  Description Qty

1 4517144 FAN COVER PP+UV 1
2 452795700 PAINTED LEFT CABINET ASSY 1
3 452989200 Base welding plate assy. 1
4 4516786 PAINTED RIGHT CABINET ASSY 1
5 4516985 Partition Plate 1
6 455000507 Compressor Capacitor With Screw 50uF (CBB65) 1
7 455000104 Double patch Capacitor for fan motor 4uF (CBB61S) 1
8 204107 Cable clip Nylon 2
9 4524907 Contactor (CJX9B-25S/01) 1

10 4521744 3 Poles Terminal Block (4mm2) 1

11 4522469 4 LEVEL TERMINAL BLOCK 1

12 4521733 3 Poles Terminal Block ( 6mm2) 1
13 4521340 Controller Box 1
14 4525427 Clip for capacitance(d=50) 1
15 452975900 Compressor assy.PA240X2CS-4KU1 1
16 4519000 Spring fo compressor heater 1
17 4517345 COMPRESSOR WIRE ASSY. 2.5mm2 1
18 452988900 Heater for compressor 1
19 4516766 PAINTED VALVE PLATE ASSY 1
20 4526513 LOW PRESS VALVE (R410A) 1
21 4526514 Hight press valve(R410A) 1
22 452891100 Filter assy 1 1
23 452891200 Filter assy 2 1
24 4523145 R.lifter 1
25 463750005 Single-way welding assy 1
26 4523338 Accumulator assy 1
27 452976500 Suction pipe 2 1
28 452976700 Low pressure pipe 1
29 452976300 Condenser pipe assy 1
30 4526291 Muffler 1
31 4525938 PAINTED RIGHT-BACK CABINET ASSY 1
32 4526522 FOUR-WAY VALVE R410A 1
33 4526589 4-Way Valve Coil FOR R410A 1
34 452976100 Discharge pipe 2 1
35 452987700 4-way welding assy. 1
36 4517028 PAINTED LEFT-BACK GRILL 1
37 4516758 SMALL HANDLE 1
38 452976000 Discharge pipe 1 1
39 452882900 Condenser and distributor welding assy. 1
40 452988800 Insulation for compressor 1
41 452976200 Suction pipe 1 for PA240 1
42 4526509 MOTOR BRAKECT (new) 1
43 4526864 Motor YYK85E-6 1
44 452907400 Hook for condenser 1
45 4526510 FAN D=460mm (3 blade) 1
46 4523141 Hexagon locked nut M10 1
47 4516788 PAINTED TOP COVER ASSY 1

14-9

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.9 Outdoor Unit: GC 21 ST

14-10

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.10 Outdoor Unit: GC 21 ST

 Part  Description Qty

1 4517144 COVER PP+UV 1

2 452795700 PAINTED LEFT CABINET ASSY 1

3 452989200 Base welding plate assy. 1

4 4516786 PAINTED RIGHT CABINET ASSY 1

5 4516985 Partition Plate 1

6 455000507 Compressor Capacitor With Screw 50uF (CBB65) 1

7 455000104 Double patch Capacitor for fan motor 4uF (CBB61S) 1

8 204107 Cable clip Nylon 2

9 4522469 4 LEVEL TERMINAL BLOCK 1

10 4521744 3 Poles Terminal Block (4mm2) 1

11 4521733 3 Poles Terminal Block ( 6mm2) 1

12 4521340 Controller Box 1

13 4525427 Clip for capacitance(d=50) 1

14 452975900 Compressor assy.PA240X2CS-4KU1 1

15 4519000 Spring fo compressor heater 1

16 4517345 COMPRESSOR WIRE ASSY. 2.5mm2 1

17 452988900 Heater for compressor 1

18 4516766 PAINTED VALVE PLATE ASSY 1

19 4526513 LOW PRESS VALVE (R410A) 1

20 4526514 Hight press valve(R410A) 1

21 452891100 Filter assy 1 1

22 452891200 Filter assy 2 1

23 4523145 R.lifter 1

24 463600001 Capillary welding assy. 1

25 4523338 Accumulator assy 1

26 452977300 Low pressure pipe 1

27 452976200 Suction pipe 1 for PA240 1

28 4526291 Muffler 1

29 4525938 PAINTED RIGHT-BACK CABINET ASSY 1

30 452977100 Condenser pipe assy. 1

31 453018400 Discharge pipe 2 1

32 4517028 PAINTED LEFT-BACK GRILL 1

33 4516758 SMALL HANDLE 1

34 452976000 Discharge pipe 1 1

35 452897800 Condenser and distributor welding assy. 1

36 452988800 Insulation for compressor 1

37 4526509 MOTOR BRAKECT (new) 1

38 4526864 motor YYK85E-6 1

39 452907400 Hook for condenser 1

40 4526510 FAN D=460mm (3 blade) 1

41 4523141 Hexagon locked nut M10 1
42 4516788 PAINTED TOP COVER ASSY 1

14-11

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.11 Outdoor Unit GCN 12 RC

14-12

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.12 Outdoor Unit: GC 24 ST

 Part  Description Qty

1 4517144 FAN COVER PP+UV 1
2 452795700 PAINTED LEFT CABINET ASSY 1

3 452881901 Base plate paint assy. 1

4 4516786 PAINTED RIGHT CABINET ASSY 1

5 4516985 Partition Plate 1

6 455000301 Compressor Capacitor 55uF (CBB65) 1

7 455000104 Double patch Capacitor for fan 1

8 204107 Cable clip Nylon 2

9 4522469 4 LEVEL TERMINAL BLOCK 1

10 4521744 3 Poles Terminal Block (4mm2) 1

11 4521733 3 Poles Terminal Block ( 6mm2) 1

12 4521340 Controller Box 1

13 4525427 (d=50) clip for capacitance 1

14 452864700 Compressor NN27VBAMT assy. for 1

15 4519000 Spring fo compressor heater 1

16 4517345 COMPRESSOR WIRE ASSY. 2.5mm2 1

17 452892100 Heater for compressor 1

18 4516766 PAINTED VALVE PLATE ASSY 1

19 4526513 LOW PRESS VALVE (R410A) 1

20 4526514 Hight press valve(R410A) 1

21 452891100 Filter assy 1 1

22 452891200 Filter assy 2 1

23 4523145 R.lifter 1

24 452901200 Capillary welding assy. 1

25 452891400 Accumulation assy 1

26 452893600 Suction pipe 1

27 452883600 Suction pipe assy. 2 1

28 4526291 Muffler 1

29 4525938 PAINTED RIGHT-BACK CABINET ASSY 1

30 452893700 Discharge tube 1 1

31 4517028 PAINTED LEFT-BACK GRILL 1

32 4516758 SMALL HANDLE 1

33 452893800 Discharge pipe 2 1

34 452882900 Condenser and distributor 1

35 452891300 Insulation for compressor NN27 1

36 4526509 MOTOR BRAKECT (new) 1

37 4526864 motor YYK85E-6 1

38 452907400 Hook for condenser 1

39 4526510 FAN D=460mm (3 blade) 1

40 4523141 M10 Hexagon locked nut M10 1
41 4516788 PAINTED TOP COVER ASSY 1

14-13

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.13 Outdoor Unit GC 24 RC

14-14

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.14 Outdoor Unit: GC 24 RC

 Part  Description Qty

1 4517144 FAN COVER PP+UV 1
2 452795700 PAINTED LEFT CABINET ASSY 1
3 452881901 Base plate paint assy. 1
4 4516786 PAINTED RIGHT CABINET ASSY 1
5 4516985 Partition Plate 1
6 455000301 Compressor Capacitor 55uF (CBB65) 1
7 455000104 Double patch Capacitor for fan 1
8 204107 Cable clip Nylon 2

9 4524907 contactor (CJX9B-25S/01) 1
10 4521744 3 Poles Terminal Block (4mm2) 1
11 4522469 4 LEVEL TERMINAL BLOCK 1
12 4521733 3 Poles Terminal Block ( 6mm2) 1
13 4521340 Controller Box 1
14 4525427 (d=50) clip for capacitance 1
15 452864700 Compressor NN27VBAMT assy. for 1
16 4519000 Spring fo compressor heater 1
17 4517345 COMPRESSOR WIRE ASSY. 2.5mm2 1
18 452862100 Base Bom for KCR-50M(SHX33SC4-U 1
18 452892100 Heater for compressor 1
19 4516766 PAINTED VALVE PLATE ASSY 1
20 4526513 LOW PRESS VALVE (R410A) 1
21 4526514 Hight press valve(R410A) 1
22 452891100 Filter assy 1 1
23 452891200 Filter assy 2 1
24 4523145 R.lifter 1
25 452891600 Single-way welding assy 1
26 452891400 Accumulation assy 1
27 452883700 Suction pipe 1
28 452883800 Low pressure pipe assy. 1
29 452883500 Condenser pipeassy. 1
30 4526291 Muffler 1
31 4525938 PAINTED RIGHT-BACK CABINET ASSY 1
32 4526522 FOUR-WAY VALVE R410A 1
33 4526589 4-Way Valve Coil FOR R410A 1
34 452890700 Dischage pipe 1 1
35 452882800 4-way welding assy. 1
36 4517028 PAINTED LEFT-BACK GRILL 1
37 4516758 SMALL HANDLE 1
38 452890800 Discharge tube 2 1
39 452882900 Condenser and distributor 1
40 452891300 Insulation for compressor NN27 1
41 452883600 Suction pipe assy. 2 1
42 4526509 MOTOR BRAKECT (new) 1
43 4526864 motor YYK85E-6 1
44 452907400 Hook for condenser 1
45 4526510 FAN D=460mm (3 blade) 1
46 4523141 M10 Hexagon locked nut M10 1
47 4516788 PAINTED TOP COVER ASSY 1
48 452925700 Pressure switch 4.2MPa/3.7MPa 1
49 192106 Relay JQX-13F/220-2Z5 OR VE-R02 2Ca2 1

14-15

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.15 Outdoor Unit: OU7-24 RC 1PH

14-16

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.16 Outdoor Unit: OU7-24 RC 1PH

No Part No Description Qty

1 437045 UPPER COVER EL13 OU LARGE 1

2 433280 SIDE PANEL OU7-24 R410A 1

3 436357 SMALL ELECTRICAL COVER OU 1

4 439329 FRONT COVER/CO' OU7-35/90 E 1

5 437091 OU SQUARE FAN GUARD 1

6 433705 NEW BASE ASSY OU 2005 LOCAL 1

7 433285 COIL OU7-24 HDR 1

8 4529604 AXIAL FAN D493*143 1

9 434062 MOTOR 86W,2S,OU7-24 1

10 433281 SIDE GUARD OU7-24 R410 1

11 436358 OU LEADING HANDLE 1

12 439342 MOTOR SUPPORT OU7-24 1

13 190443 HEATER CRANKCASE MITSUBISHI 1

14 433293 COMPRESSOR NN27VBAMT 1

15 433934 CAPILLARY HEATING ASSY OU7-24 1

16 433291 TUBING ASSY OU7 R410A 1

17 402495 BOARD TPHN 5B 1

18 442007 CAPACITOR 6mF 400V P1/P2 1

19 434716 THERMISTOR+CAP WTH CONNECTO 1

20 442011 CAPACITOR 25mF 400V P1/P2 1

20 442016 CAPACITOR 55mF 400V P1/P2 1

21 437274 COMPRESOR WIRING OU7/8-1PH 1

22 402283 SUCTION ACCUMULATOR 3x5/8" 1

24 437229 ELECTRICAL BOX TPHN 1

33 442466 VALVE COIL L700 MOLEX-SANHU 1

44 433816 SUCTION ASSY OU7 R410A 1

14-17

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.17 Outdoor Unit: OU7-24 ST 1PH

14-18

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.18 Outdoor Unit: OU7-24 ST 1PH

 Part  Description Qty

1 437045 UPPER COVER EL13 OU LARGE 1

2 433280 SIDE PANEL OU7-24 R410A 1

3 436357 SMALL ELECTRICAL COVER OU 1

4 439329 FRONT COVER/CO' OU7-35/90 EL13 1

5 437091 OU SQUARE FAN GUARD 1

6 433705 NEW BASE ASSY OU 2005 LOCAL R4 1

7 433846 COIL OU7-24 ST 1

8 4529604 AXIAL FAN D493*143 1

9 434062 MOTOR 86W,2S,OU7-24 1

10 433281 SIDE GUARD OU7-24 R410 1

11 436358 OU LEADING HANDLE 1

12 439342 MOTOR SUPPORT OU7 1

13 190443 HEATER CRANKCASE MITSUBISHI CO 1

14 433293 COMPRESSOR NN27VBAMT 1

15 433845 CAPILLARY ASSY OU7-24 ST R410A 1

16 433817 TUBING ASSY OU7 ST R410A 1

17 402495 BOARD TPHN 5B 1

18 442007 CAPACITOR 6mF 400V P1/P2 1

19 434716 THERMISTOR+CAP WTH CONNECTOR L 1

20 442016 CAPACITOR 55mF 400V P1/P2 1

21 437274 COMPRESOR WIRING OU7/8-1PH MIT 1

22 402283 SUCTION ACCUMULATOR 3x5/8" 3. " 1

24 437229 ELECTRICAL BOX TPHN 1

44 433816 SUCTION ASSY OU7 R410A 1

45 433847 GAS VAVE ASSY OU7 ST R410A 1

14-19

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.19 Outdoor Unit: OU7-24Z RC/ST 1PH



RSWLRQDO

20

19a

18

17

24

44

14-20

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.20 Outdoor Unit: OU7-24Z RC/ST 1PH

 Part Description Qty

1 437045 LARGE UPPER COVER CUE 1

2 433280 SIDE PANEL OU7-24 R410A 1

3 436357 SMALL ELECTRICAL COVER CUE 1

4 439329 COVERAIR COLLECTOR 1

5 437091 OU SQUARE FAN GUARD 1

6 433722 BASE ASSY OU7-24C EXPORT R410A 1

7 433285 COIL OU7-24 HDR 1

8 4529604 AXIAL FAN D493x143 1

9 434211 Replace by SP000000266 MOTOR+BRACKET 1

10 433281 SIDE GUARD OU7-24 R410 1

11 436358 TRANSPORT HANDLE CUE 1

12 439342 MOTOR BASE OU7 1

14 438795 COMPRESSOR GP270PAA 1

15 433934 CAPILLARY HEATING ASSY OU7-24 R410A 1

16 433660 TUBING ASSY OU7-24C R410A 1

17 413496 BOARD TPHN 5F (RoHS) 1

18 442007 CAPACITOR 6uF 400V 1

19a 434716 THERMISTOR L1050 (for coil) 1

20 442038 CAPACITOR 50mF 400V P1/P2 1

21 438627 COMPRESSOR WIRING TPHN-5F 1

24 437229 ELECTRICAL BOX TPHN 1

33 442520 VALVE COIL L700 MOLEX-DUNAN 1

44 192207 CONTACTOR 230V, 40A 1

14-21

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.21 Outdoor Unit: OU7-24 RC 3PH

14-22

EXPLODED VIEWS AND SPARE PARTS LISTS

SM DELTA 1-E.0 GB

14.22 Outdoor Unit: OU7-24 RC 3PH

 Part  Description Qty

1 437045 UPPER COVER EL13 OU LARGE 1

2 433280 SIDE PANEL OU7-24 R410A 1

3 436357 SMALL ELECTRICAL COVER OU 1

4 439329 FRONT COVER/CO' OU7-35/90 EL13 1

5 437091 OU SQUARE FAN GUARD 1

6 433294 NEW BASE ASSY OU 2005 EXPORT R 1

7 433285 COIL OU7-24 HDR 1

8 4529604 AXIAL FAN D493*143 1

9 434062 MOTOR 86W,2S,OU7-24 1

10 433281 SIDE GUARD OU7-24 R410 1

11 436358 OU LEADING HANDLE 1

12 439342 MOTOR SUPPORT OU7 1

13 190443 HEATER CRANKCASE MITSUBISHI CO 1

14 433753 COMPRESSOR NN27YDAMT 1

15 433934 CAPILLARY HEATING ASSY OU7-24 1

16 433291 TUBING ASSY OU7 R410A 1

17 402494 BOARD TPHN 3C 1

18 442007 CAPACITOR 6mF 400V P1/P2 1

19 434716 THERMISTOR+CAP WTH CONNECTOR L 1

21 437278 COMPRESSOR WIRING OU7/8-3PH MI 1

22 402283 SUCTION ACCUMULATOR 3x5/8" 3. " 1

24 437229 ELECTRICAL BOX TPHN 1

25 439795 3PH MOTOR PROTECTOR 1

33 442466 VALVE COIL L700 MOLEX-SANHUA 1

44 433816 SUCTION ASSY OU7 R410A 1