Electra ELSI-JYD009-H11, ELSI-JYD012-H11, ELSI-JYD018-H11, ELAU-VBZ214-H11, ELAU-VBZ318-H11 Service Manual

VBZ214-318-430

Indoor Units Outdoor Units

ELSI-JYD009-H11
ELSI-JYD012-H11
ELSI-JYD018-H11

ELAU-VBZ214-H11
ELAU-VBZ318-H11

ELAU-VBZ430-H11

REFRIGERANT

R410A HEAT PUMP

JUNE- 2011

SM VBZ H11 1-A.1 GB

Version:1

LIST OF EFFECTIVE PAGES

A Service Manual –VBZ DCI 1-A.1 GB

LIST OF EFFECTIVE PAGES

Note: Changes in the pages are indicated by “Revision #” in the footer of each effected page

(when none indicates any 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 ....... 01........ 14 Nov, 10

Total number of pages in this publication is 82 consisting of the following:

Page
No.

Revision
No. #

Page

No.

Revision
No. #

Page

No.

Revision
No. #

* Zero in this column indicates an original page.

Table of Contents

TABLE OF CONTENTS

Service Manual – VBZ DCI 1-A.1 GB i

1. INTRODUCTION............................................................................................................................. 1-1

2. PRODUCT DATA SHEET............................................................................................................... 2-1

3. RATING CONDITIONS................................................................................................................... 3-1

4. OUTLINE DIMENSION...................................................................................................................4-1

5. PERFORMANCE DATA.................................................................................................................5-1

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

7. SOUND LEVEL CHARACTERISTICS ........................................................................................... 7-1

8. ELECTRICAL DATA....................................................................................................................... 8-1

9. WIRING DIAGRAM......................................................................................................................... 9-1

10. REFRIGERATION DIAGRAMS...................................................................................................... 10-1

11. TUBING CONNECTIONS............................................................................................................... 11-1

12. CONTROL SYSTEM....................................................................................................................... 12-1

13. TROUBLESHOOTING.................................................................................................................... 13-1

14. CHARACTERISTICS OF SENSOR................................................................................................ 14-1

15. EXPLODED VIEW & SPARE PART LIST...................................................................................... 15-1

INTRODUCTION

1. INTRODUCTION

1.1 General

The VBZ DC inverter multisplits outdoor is a multi-tubing system with 2, 3 or 4
connected indoor units. The multi-split inverter is a high level technology product for
residential and commercial application offering comfort, low noise operation and
energy saves.

.

1.2 Main Features

The unit benefits from the most advanced technological innovations, namely:

• DC inverter technology.

• R410A models

• Microprocessor control and indoor LED display

• High COP, Energy efficiency class A in cooling/heating mode

• Max allowing total tubing distance of 70m(for model 18,30)

• Up to 10 m vertical high between indoor and outdoor units(for model 18,30)

• Easy installation and service.

• Sleep mode from remote control to save energy

• ON/OFF timer and clock display

• Vertical auto swing with motorized flap (any position stop)

• Intelligent Deicing

• Memory from power failure

• Rapid cooling/heating

• I-Feel function

• Cold air prevention in heating

• Clean function (Blow dry)

• Self diagnostic (Error indications) for ease of maintenance

Service Manual – VBZ DCI 1-A.1 GB 1-1

INTRODUCTION

1-2 Service Manual – VBZ DCI 1-A.1 GB

1.3 Indoor Unit

The indoor unit is wall mounted, and can be easily fitted to many types of residential
locations. It includes:

• LED display

• Variable speed with PG motor

• Motorized flap

• High efficiency filtration to ensure a best Air Quality: Advanced filtering combine

mechanical, Photo-catalytic + Bi-anti bacterial and observe bad gaseous and
smokes.

1.4 Control

The microprocessor indoor controller, and an infrared remote control, supplied as
standard, provides complete operating function and programming.

Remote control RC 8：

Compact and economically design, it offers excellent user comfort. Combining modern design

with high technology, the RC8 remote control offers powerful functions of real considering of user

comfort and energy saving of air-conditioner.

For detail of functions, please refer to Appendix 1

INTRODUCTION

Service Manual – VBZ DCI 1-A.1 GB 1-3

1.5 Outdoor Unit

The 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:

• Compressor mounted in a soundproofed compartment :

• Axial fan.

• Outdoor coil with JYDrophilic louver fins for RC units.

• Outlet air fan grill.

• Interconnecting wiring terminal block.

• Electric expansion valves to control the refrigerant to each indoor.

1.6 Tubing Connections

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

1.7 Inbox Documentation

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

INTRODUCTION

1-4 Service Manual – VBZ DCI 1-A.1 GB

1.8 Matching Table

INDOOR UNITS

ELSI-JYD009-H11 ELSI-JYD012-H11 ELSI-JYD018-H11

OUTDOOR UNITS

ELAU-VBZ214-H11

X X

ELAU-VBZ318-H11

X X X

ELAU-VBZ430-H11

X X X

INTRODUCTION

Service Manual – VBZ DCI 1-A.1 GB 1-5

1.9 Indoor unit combination

ELAU-VBZ214-H11

ELAU-VBZ214-H11

JOAU-ZBY214-H11

1 unit 2 units

9 9+9

12 9+12

ELAU-VBZ318-H11
ELAU-VBZ318-H11

2 units 3 units

9+9 9+12 9+9+9 9+9+12 9+9+18

9+18 12+12 9+18+18 9+12+12 9+12+18

12+18 18+18 12+12+12 12+12+18 12+18+18

ELAU-VBZ430-H11
ELAU-VBZ430-H11

2 units 3 units 4units

9+9 9+12 9+9+9 9+9+12 9+9+18 9+9+9+9 9+9+9+12 9+9+9+18

9+18 12+12 9+18+18 9+12+12 9+12+18 9+9+12+12 9+9+12+18 9+9+18+18

12+18 18+18 12+12+12 12+12+18 12+18+18 9+12+12+12 9+12+12+18 9+12+18+18

12+12+12+12 12+12+12+18 12+12+18+18

PRODUCT DATASHEET

Service Manual – VBZ DCI 1-A.1 GB 2-1

2. PRODUCT DATA SHEET

Model Outdoor Unit

VBZ214

Installation Method of Pipe Flared

Characteristics Units Cooling Heating

Capacity (4) kW 3.90(2.00-4.70) 4.30(2.50-5.50)
Power input (4) kW 1.14(0.50-2.00) 1.13(0.58-2.15)
EER (Cooling) or COP(Heating) (4) W/W 3.42 3.80
Energy efficiency class A A

V 220-240

Ph 1

Power supply

Hz 50

Rated current A 5.11 5.06

Power factor

0.97 0.97

Prated (IDU+ODU)

W
Starting current A
Circuit breaker rating A 25

Refrigerant control EEV
Compressor type, model Sanyo Twin Rotary,C-6RZ146H1A
Fan type & quantity Propeller(direct) x 1
Fan speeds H RPM 880/700/500
Air flow H m3/hr 2600/2300/1600
Sound power level H dB(A) 66
Sound pressure level(3) H dB(A) 56
Dimensions WxHxD mm 899X596X378
Net Weight kg 43
Package dimensions WxHxD mm 980X420X645
Packaged weight kg 48
Refrigerant type R410A

Standard charge

kg 1.4

Additional charge 20g/m(10m<L<20m)

Liquid line In.(mm) 2x1/4"(6.35)
Suction line In.(mm) 2x3/8"(9.53)
Max.tubing length m. Max.10m for one unit and 20m for total
height difference

between indoor units

m Max. 5

OUTDOOR

Connections

between units

height difference
between indoor &
outdoor

m. Max. 5

PRODUCT DATA SHEET

2-2 Service Manual – VBZ DCI 1-A.1 GB

Model Outdoor Unit

VBZ318

Installation Method of Pipe Flared

Characteristics Units Cooling Heating

Capacity (4) kW 6.80(2.20-10.00) 8.00(2.80-11.00)
Power input (4) kW 2.11(0.65-4.50) 2.21(0.98-3.95)
EER (Cooling) or COP(Heating) (4) W/W 3.22 3.62
Energy efficiency class A A

V 220-240

Ph 1

Power supply

Hz 50
Rated current A 9.45 9.90

Power factor

0.97 0.97

Prated (IDU+ODU)

W

Starting current A
Circuit breaker rating A 32

Refrigerant control EEV
Compressor type, model Mitsubishi Twin Rotary,TNB220FLHMC
Fan type & quantity Propeller(direct) x 1
Fan speeds H RPM 690/600/500
Air flow H m3/hr 3300/2900/2400
Sound power level H dB(A) 68
Sound pressure level(3) H dB(A) 58
Dimensions WxHxD mm 955X700X396
Net Weight kg 59
Package dimensions WxHxD mm 1029X458X750
Packaged weight kg 64
Refrigerant type R410A

Standard charge

kg 2.2

Additional charge 20g/m(30m<L<70m)

Liquid line In.(mm) 3x1/4"(6.35)
Suction line In.(mm) 3x3/8"(9.53)
Max.tubing length m Max.20m for one unit and 70m for total
height difference between

indoor units

m Max. 10

OUTDOOR

Connections

between units

height difference between
indoor & outdoor

m Max. 10

PRODUCT DATASHEET

Service Manual – VBZ DCI 1-A.1 GB 2-3

Model Outdoor Unit

VBZ318

Installation Method of Pipe Flared

Characteristics Units Cooling Heating

Capacity (4) kW 7.80(2.20-10.00) 8.70(2.80-11.00)
Power input (4) kW 2.42(0.65-4.50) 2.40(0.98-3.95)
EER (Cooling) or COP(Heating) (4) W/W 3.22 3.63
Energy efficiency class A A

V 220-240

Ph 1

Power supply

Hz 50

Rated current A 10.8 10.7

Power factor

0.97 0.97

Prated (IDU+ODU)

W
Starting current A
Circuit breaker rating A 32

Refrigerant control EEV
Compressor type, model Mitsubishi Twin Rotary,TNB220FLHMC
Fan type & quantity Propeller(direct) x 1
Fan speeds H RPM 690/600/500
Air flow H m3/hr 3300/2900/2400
Sound power level H dB(A) 68
Sound pressure level(3) H dB(A) 58
Dimensions WxHxD mm 955X700X396
Net Weight kg 60
Package dimensions WxHxD mm 1029X458X750
Packaged weight kg 65
Refrigerant type R410A

Standard charge

kg 2.2

Additional charge 20g/m(40m<L<70m)

Liquid line In.(mm) 4x1/4"(6.35)
Suction line In.(mm) 4x3/8"(9.53)
Max.tubing length m. Max.20m for one unit and 70m for total
height difference

between indoor units

m. Max. 10

OUTDOOR

Connections

between units

height difference
between indoor &
outdoor

m. Max. 10

PRODUCT DATA SHEET

2-4 Service Manual – VBZ DCI 1-A.1 GB

Model Indoor Unit

JYD009

Installation Method of Pipe Flared

Characteristics Units Cooling Heating

Capacity (4) kW 2.60 2.80

V 220-240

Ph 1

Power supply

Hz 50

Fan type & quantity Crossflow x 1

Cooling SH/H/M/L RPM 1300/1100/900/700

Fan speeds

Heating SH/H/M/L RPM 1300/1140/980/820
Air flow (1) SH/H/M/L m3/hr 600/500/350/280
External static pressure Min Pa 0
Sound power level (2) SH/H/M/L dB(A) 51/48/40/34/­Sound pressure level(3) SH/H/M/L dB(A) 41/38/30/24/­Moisture removal l/hr 0.8
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 770x283x201
Net Weight kg 8
Package dimensions WxHxD mm 844x342x261

INDOOR

Packaged weight kg 11

Operation control type Remote control

Model Indoor Unit

JYD012

Installation Method of Pipe Flared

Characteristics Units Cooling Heating

Capacity (4) kW 3.50 3.80

V 220-240

Ph 1

Power supply

Hz 50

Fan type & quantity Crossflow x 1

Cooling SH/H/M/L RPM 1350/1150/950/750

Fan speeds

Heating SH/H/M/L RPM 1350/1190/1020/850
Air flow (1) SH/H/M/L m3/hr 680/560/410/300
External static pressure Min Pa 0
Sound power level (2) SH/H/M/L dB(A) 52/49/41/35/­Sound pressure level(3) SH/H/M/L dB(A) 42/39/31/25/­Moisture removal l/hr 1.5
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 770x283x201
Net Weight kg 9
Package dimensions WxHxD mm 844x342x261

INDOOR

Packaged weight kg 12

Operation control type Remote control

PRODUCT DATASHEET

Service Manual – VBZ DCI 1-A.1 GB 2-5

Model Indoor Unit

JYD018

Installation Method of Pipe Flared

Characteristics Units Cooling Heating

Capacity (4) kW 5.30 5.80

V 220-240

Ph 1

Power supply

Hz 50

Fan type & quantity Crossflow x 1

Cooling SH/H/M/L RPM 1300/1100/950/800

Fan speeds

Heating SH/H/M/L RPM 1400/1200/1050/900
Air flow (1) SH/H/M/L m3/hr 800/680/560/460
External static pressure Min Pa 0
Sound power level (2) SH/H/M/L dB(A) 55/50/47/42/­Sound pressure level(3) SH/H/M/L dB(A) 45/40/37/32/­Moisture removal l/hr 2
Condensate drain tube I.D mm 16
Dimensions WxHxD mm 865x305x215
Net Weight kg 12
Package dimensions WxHxD mm 948X383X310

INDOOR

Packaged weight kg 16

Operation control type Remote control

(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).

RATING CONDITIONS

3. RATING CONDITIONS ATING CONDITIONS

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

Cooling: Cooling:

Indoor: 27

o

C DB 19oC WB Indoor: 27oC DB 19oC WB

Outdoor: 35

o

C DB Outdoor: 35 oC DB

Heating: Heating:

Indoor: 20

o

C DB Indoor: 20oC DB

Outdoor: 7

o

C DB 6oC WB Outdoor: 7oC DB 6oC WB

Operating Limits Operating Limits

R410AR410A

Indoor Outdoor

Upper limit 32oC DB 23oC WB 43oC DB

Cooling

Lower limit 21oC DB 15oC WB -5oC DB

Upper limit 27oC DB 24oC DB 18oC WB

Heating

Lower limit 10oC DB -15oC DB RH80%

Voltage

1-PH 50Hz 195 – 265 V

Service Manual – VBZ DCI 1-A.1 GB 3-1

OUTLINE DIMENSION

4. OUTLINE DIMENSION NE DIMENSION

4.1 Indoor: JYD009, JYD012 4.1 Indoor: JYD009, JYD012

Service Manual – VBZ DCI 1-A.1 GB 4-1

OUTLINE DIMENSION

4-2 Service Manual – VBZ DCI 1-A.1 GB

4.2 Indoor: JYD018

OUTLINE DIMENSION

4.3 Outdoor: VBZ214

Service Manual – VBZ DCI 1-A.1 GB 4-3

OUTLINE DIMENSION

4-4 Service Manual – VBZ DCI 1-A.1 GB

4.4 Outdoor: VBZ318, VBZ430

PERFORMANCE DATA

5. PERFORMANCE DATA

5.1 VBZ214

5.1.1 Cooling Capacity (kW)

ID COIL ENTERING AIR DB/WB TEMPERATURE [C0]

OD COIL ENTERING

AIR DB

TEMPERATURE [C

0

]

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

TC

80 - 110 % of nominal

SC

80 - 105 % of nominal

-10 - 20

(protection range)

PI

25 - 50 % of nominal
TC 4.18 4.43 4.67 4.92 5.16
SC 3.63 3.72 3.80 3.89 3.98

25

PI 0.90 0.91 0.93 0.95 0.97
TC 3.80 4.04 4.29 4.53 4.77
SC 3.44 3.53 3.62 3.70 3.79

30

PI 1.00 1.02 1.04 1.05 1.07

TC 3.41 3.66 3.90 4.14 4.39
SC 3.26 3.35 3.43 3.52 3.60

35

PI 1.10 1.12 1.14 1.16 1.18

TC 80%-92% of nominal
SC 80%-92% of nominal

40(Protection Range)

PI 80%-92% of nominal
TC 70%-85% of nominal
SC 70%-85% of nominal

46(Protection Range)

PI 90%-100% of nominal

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

5.1.2 Capacity Correction Factors

Coolin g Capa city Ratio Vs . Outdoor Tempe r ature

0.5

0.6

0.7

0.8

0.9

1

1.1

1.2

1.3

1.4

20 25 30 35 40 45

Outdoor Temperature [deg C]

Capacity Ration

Service Manual – VBZ DCI 1-A.1 GB 5-1

PERFROMANCE DATA

5-2 Service Manual – VBZ DCI 1-A.1 GB

5.1.3 Heating Capacity (kW)

ID COIL ENTERING AIR DB TEMPERATURE [C0]

OD COIL

ENTERING AIR

DB/WB

TEMPERATURE

[C

0

] DATA 15 20 25

TC 2.29 2.15 2.01

-15/-16
PI 0.72 0.83 0.93

TC 2.74 2.60 2.46

-10/-12
PI 0.83 0.94 1.04

TC 3.08 2.94 2.80

-7/-8
PI 0.92 1.02 1.12

TC 3.26 3.11 2.97

-1/-2
PI 0.96 1.06 1.17

TC 3.37 3.23 3.08

2/1

PI 0.98 1.09 1.19

TC 4.44 4.30 4.16

7/6

PI 1.03 1.13 1.23

TC 4.62 4.48 4.33

10/9

PI 1.07 1.18 1.28

TC 4.80 4.65 4.51

15/12

PI 1.12 1.23 1.33

15-24

TC 85 - 105 % of nominal

(Protection Range)

PI 80 - 120 % of nominal

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

5.1.4 Capacity Correction Factors

Heating Capacit y Rati o Vs. Outdoor Temperature

0.5

0.6

0.7

0.8

0.9

1

1.1

1.2

-15 -10 -5 0 5 10 15

Outdoor WB Temperature [deg C]

Capa city Rati on

PERFORMANCE DATA

5.2 VBZ318

5.2.1 Cooling Capacity (kW)

ID COIL ENTERING AIR DB/WB TEMPERATURE [C0]

OD COIL ENTERING

AIR DB

TEMPERATURE [C

0

]

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

TC

80 - 110 % of nominal

SC

80 - 105 % of nominal

-10 - 20

(protection range)

PI

25 - 50 % of nominal
TC 7.30 7.72 8.15 8.57 9.00
SC 6.33 6.48 6.63 6.78 6.93

25

PI 1.66 1.69 1.73 1.76 1.79
TC 6.62 7.05 7.47 7.90 8.32
SC 6.01 6.16 6.31 6.46 6.61

30

PI 1.85 1.88 1.92 1.95 1.99

TC 5.95 6.37 6.80 7.23 7.65
SC 5.68 5.83 5.98 6.13 6.29

35

PI 2.04 2.08 2.11 2.14 2.18

TC 80%-92% of nominal
SC 80%-92% of nominal

40(Protection Range)

PI 80%-92% of nominal
TC 70%-85% of nominal
SC 70%-85% of nominal

46(Protection Range)

PI 90%-100% of nominal

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

5.2.2 Capacity Correction Factors

Cooling Capaci t y Rati o Vs. Outdoor Temperat ur e

0.5

0.6

0.7

0.8

0.9

1

1.1

1.2

1.3

1.4

20 25 30 35 40 45

Ou tdoor Temperature [deg C]

Capacity Rat i on

Service Manual – VBZ DCI 1-A.1 GB 5-3

PERFROMANCE DATA

5-4 Service Manual – VBZ DCI 1-A.1 GB

5.2.3 Heating Capacity (kW)

ID COIL ENTERING AIR DB TEMPERATURE [C0]

OD COIL

ENTERING AIR

DB/WB

TEMPERATURE

[C

0

] DATA 15 20 25

TC 4.26 4.00 3.73

-15/-16
PI 1.41 1.62 1.82

TC 5.11 4.84 4.58

-10/-12
PI 1.63 1.83 2.04

TC 5.74 5.48 5.21

-7/-8
PI 1.79 1.99 2.20

TC 6.06 5.79 5.53

-1/-2
PI 1.87 2.08 2.28

TC 6.27 6.00 5.74

2/1

PI 1.93 2.13 2.33

TC 8.26 8.00 7.74

7/6

PI 2.01 2.21 2.41

TC 8.59 8.33 8.06

10/9

PI 2.10 2.30 2.51

TC 8.92 8.66 8.39

15/12

PI 2.19 2.40 2.60

15-24

TC 85 - 105 % of nominal

(Protection Range)

PI 80 - 120 % of nominal

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

5.1.5 Capacity Correction Factors

Heating Capacity Rati o Vs. O ut door Temper at ure

0.5

0.6

0.7

0.8

0.9

1

1.1

1.2

-15 -10 -5 0 5 10 15

Outdoor WB Temperature [deg C]

Capacity Ration

PERFORMANCE DATA

5.3 VBZ430

5.3.1 Cooling Capacity (kW)

ID COIL ENTERING AIR DB/WB TEMPERATURE [C0]

OD COIL ENTERING

AIR DB

TEMPERATURE [C

0

]

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

TC

80 - 110 % of nominal

SC

80 - 105 % of nominal

-10 - 20

(protection range)

PI

25 - 50 % of nominal
TC 8.37 8.86 9.34 9.83 10.32
SC 7.26 7.43 7.61 7.78 7.95

25

PI 1.91 1.95 1.99 2.03 2.07
TC 7.60 8.08 8.57 9.06 9.55
SC 6.89 7.06 7.23 7.41 7.58

30

PI 2.13 2.17 2.21 2.25 2.29

TC 6.82 7.31 7.80 8.29 8.78
SC 6.52 6.69 6.86 7.04 7.21

35

PI 2.35 2.39 2.43 2.47 2.51

TC 80%-92% of nominal
SC 80%-92% of nominal

40(Protection Range)

PI 80%-92% of nominal
TC 70%-85% of nominal
SC 70%-85% of nominal

46(Protection Range)

PI 90%-100% of nominal

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

5.3.2 Capacity Correction Factors

Cooling Capacity Rat i o Vs. O ut door Tem perat ur e

0.5

0.6

0.7

0.8

0.9

1

1.1

1.2

1.3

1.4

20 25 30 35 40 45

Outdoor Tem perature [deg C]

Capacity Ration

Service Manual – VBZ DCI 1-A.1 GB 5-5

PERFROMANCE DATA

5-6 Service Manual – VBZ DCI 1-A.1 GB

5.3.3 Heating Capacity (kW)

ID COIL ENTERING AIR DB TEMPERATURE [C0]

OD COIL

ENTERING AIR

DB/WB

TEMPERATURE

[C

0

] DATA 15 20 25

TC 4.63 4.35 4.06

-15/-16
PI 1.54 1.76 1.98

TC 5.55 5.27 4.98

-10/-12
PI 1.77 1.99 2.21

TC 6.24 5.95 5.67

-7/-8
PI 1.94 2.17 2.39

TC 6.59 6.30 6.01

-1/-2
PI 2.03 2.25 2.47

TC 6.82 6.53 6.24

2/1

PI 2.09 2.31 2.53

TC 8.99 8.70 8.41

7/6

PI 2.18 2.40 2.62

TC 9.34 9.06 8.77

10/9

PI 2.28 2.50 2.72

TC 9.70 9.42 9.13

15/12

PI 2.38 2.60 2.82

15-24

TC 85 - 105 % of nominal

(Protection Range)

PI 80 - 120 % of nominal

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

5.3.4 Capacity Correction Factors

Heating Capacity Ratio Vs. O ut door Temperat ure

0.5

0.6

0.7

0.8

0.9

1

1.1

1.2

-15 -10 -5 0 5 10 15

Outdoor W B Temperature [deg C]

Capa city Ratio n

PRESSURE CURVES

Service Manual – VBZ DCI 1-A.1 GB 6-1

6. PRESSURE CURVES

6.1 Model: VBZ214

6.1.1 Cooling

2.50

3.00

3.50

4.00

4.50

5.00

5.50

6.00

6.50

7.00

10 15 20 25 30 35 40 45

Outdoor DB Tempera ture

In put Curren t [

A

]

22/15

24/17

27/19

29/21

32/23

1500

1750

2000

2250

2500

2750

3000

3250

3500

3750

10 15 20 25 30 35 40 45

Outdoor DB Te m perature

Discharge Pressure [kPa]

22/15

24/17

27/19

29/21

32/23

Indoor

DB/WB

700

800

900

1000

1100

1200

1300

1400

10 15 20 25 30 35 40 45

Outdoor DB Temperature

Suction Pressure [kPa]

22/15

24/17

27/19

29/21

32/23

Indoor

DB/WB

PRESSURE CURVES

6-2 Service Manual – VBZ DCI 1-A.1 GB

6.1.2 Heating

400

500

600

700

800

900

1000

1100

-15 -10 -5 0 5 10 15

Outdoor WB Temperature

Suction P ressu r e [kP a]

15

20

25

1500

1750

2000

2250

2500

2750

3000

3250

-15 -10 -5 0 5 10 15

Outdoor WB Temperature

Disch arge Pressure [kPa]

15

20

25

Indoor DB

3.00

3.50

4.00

4.50

5.00

5.50

6.00

6.50

7.00

-15 -10 -5 0 5 10 15

Outdoor WB Temperature

Input Current [A]

15

20

25

Indoor DB

PRESSURE CURVES

Service Manual – VBZ DCI 1-A.1 GB 6-3

6.2 Model: VBZ318

6.2.1 Cooling

6.00

6.50

7.00

7.50

8.00

8.50

9.00

9.50

10.00

10.50

11.00

11.50

12.00

12.50

13.00

10 15 20 25 30 35 40 45

Outdoor DB Temperature

Inpu t Current [A]

22/15

24/17

27/19

29/21

32/23

1500

1750

2000

2250

2500

2750

3000

3250

3500

3750

4000

10 15 20 25 30 35 40 45

Outdoor DB Te m perature

Discharg e P r essu re [kP a]

22/15

24/17

27/19

29/21

32/23

Indoor

DB/WB

700

800

900

1000

1100

1200

10 15 20 25 30 35 40 45

Outdoor DB Temperature

Suction Pressure [kPa]

22/15

24/17

27/19

29/21

32/23

Indoor

DB/WB

PRESSURE CURVES

6-4 Service Manual – VBZ DCI 1-A.1 GB

6.2.2 Heating

300

400

500

600

700

800

900

1000

1100

-15 -10 -5 0 5 10 15

Outdoor WB Temperature

Suction P ressu r e [kP a]

15

20

25

1500

1750

2000

2250

2500

2750

3000

3250

-15 -10 -5 0 5 10 15

Outdoor WB Temperature

Disch arge Pressure [kP a]

15

20

25

Indoor DB

6.00

6.50

7.00

7.50

8.00

8.50

9.00

9.50

10.00

10.50

11.00

11.50

12.00

12.50

13.00

-15 -10 -5 0 5 10 15

Outdoor WB Temperature

Input Current [A]

15

20

25

Indoor DB

PRESSURE CURVES

Service Manual – VBZ DCI 1-A.1 GB 6-5

6.3 Model: VBZ430

6.3.1 Cooling

7.00

7.50

8.00

8.50

9.00

9.50

10.00

10.50

11.00

11.50

12.00

12.50

13.00

13.50

14.00

14.50

15.00

10 15 20 25 30 35 40 45

Outdoor DB Temperature

Inpu t Current [A]

22/15

24/17

27/19

29/21

32/23

1500

1750

2000

2250

2500

2750

3000

3250

3500

3750

4000

10 15 20 25 30 35 40 45

Outdoor DB Te m perature

Discharg e P r essu re [kP a]

22/15

24/17

27/19

29/21

32/23

Indoor

DB/WB

700

800

900

1000

1100

1200

10 15 20 25 30 35 40 45

Outdoor DB Temperature

Suction Pressure [kPa]

22/15

24/17

27/19

29/21

32/23

Indoor

DB/WB

PRESSURE CURVES

6-6 Service Manual – VBZ DCI 1-A.1 GB

6.3.2 Heating

300

400

500

600

700

800

900

1000

1100

-15 -10 -5 0 5 10 15

Outdoor WB Temperature

Suction Pressure [kPa]

15

20

25

1500

1750

2000

2250

2500

2750

3000

3250

-15 -10 -5 0 5 10 15

Outdoor WB Temperature

Discharge Pr essure [kPa]

15

20

25

Indoor DB

7.00

7.50

8.00

8.50

9.00

9.50

10.00

10.50

11.00

11.50

12.00

12.50

13.00

13.50

14.00

14.50

15.00

-15 -10 -5 0 5 10 15

Outdoor WB Temperature

Inp u t Current [A]

15

20

25

Indoor DB

SOUND LEVEL CHARACTERISTICS

7. SOUND LEVEL CHARACTERISTICS CHARACTERISTICS

7.1 Sound Pressure Level 7.1 Sound Pressure Level

7.2 Sound Pressure Level Spectrum (Measured as Figure 1)

JYD009 Cooling JYD009 Heating

Nois e spectrum & NC Curves

NC15

NC20

NC25

NC30

NC35

NC40

NC45

NC50

NC55

NC60

NC65

0

10

20

30

40

50

60

70

80

90

63 125 250 500 1000 2000 4000 8000

Oc tave Band Center Frequencies [Hz]

Octave Band Sound Pressure L evel [d B r e 20 mPa]

Noi se spectrum & NC Curves

NC15

NC20

NC25

NC30

NC35

NC40

NC45

NC50

NC55

NC60

NC65

0

10

20

30

40

50

60

70

80

90

63 125 250 500 1000 2000 4000 8000

Octave Band Center Frequencies [Hz]

Octave Band Sound Pressure Level [d B r e 20 mPa]

FAN SPEED LINE

HI

ME

LO

Service Manual – VBZ DCI 1-A.1 GB 7-1

SOUND LEVEL CHARACTERISTICS

7-2 Service Manual – VBZ DCI 1-A.1 GB

JYD012 Cooling JYD012 Heating

Nois e spectrum & NC Curves

NC15

NC20

NC25

NC30

NC35

NC40

NC45

NC50

NC55

NC60

NC65

0

10

20

30

40

50

60

70

80

90

63 125 250 500 1000 2000 4000 8000

Oc tave Band Center Frequencies [Hz]

Octave Band Sound Pressure L evel [d B r e 20 mPa]

Noi se spectrum & NC Curve s

NC15

NC20

NC25

NC30

NC35

NC40

NC45

NC50

NC55

NC60

NC65

0

10

20

30

40

50

60

70

80

90

63 125 250 500 1000 2000 4000 8000

Octave Band Center Frequencies [Hz]

Octave Band Sound Pressure Level [d B r e 20 mPa]

FAN SPEED LINE

HI

ME

LO

JYD018 Cooling JYD018 Heating

Noise spectrum & NC Curves

NC15

NC20

NC25

NC30

NC35

NC40

NC45

NC50

NC55

NC60

NC65

0

10

20

30

40

50

60

70

80

90

63 125 250 500 1000 2000 4000 8000

Octave Band Center Frequencies [Hz]

Octave Band So u n d Pr essu re L evel [d B r e 20 mPa]

Noi se spectrum & NC Curves

NC15

NC20

NC25

NC30

NC35

NC40

NC45

NC50

NC55

NC60

NC65

0

10

20

30

40

50

60

70

80

90

63 125 250 500 1000 2000 4000 8000

Oc tave Band Center Frequencies [Hz]

Octave Band Sound Pressure Level [d B re 20 mPa]

FAN SPEED LINE

HI

ME

LO

ELECTRICAL DATA

8. ELECTRICAL DATA DATA

MODEL MODEL VBZ214 VBZ214 VBZ318 VBZ318 VBZ430 VBZ430

To outdoor

Power Supply

1PH-220-240V-50Hz

Max Current, A 15A 21A 21A

Circuit Breaker, A 25A 32A 32A

Power Supply Wiring No. X Cross Section
mm

2

3x2.5 mm

2

3x4.0mm2 3x4.0mm2

Interconnecting Cable Model No. X Cross
Section mm

2

4x1.0 mm

2

4x1.0 mm2 4x1.0 mm2

NOTE

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

Service Manual – VBZ DCI 1-A.1 GB 8-1

WIRING DIAGRAM

9. WIRING DIAGRAM WIRING DIAGRAM

9.1 JYD009, JYD012 9.1 JYD009, JYD012

9.2 JYD018

Service Manual – VBZ DCI 1-A.1 GB 9-1

WIRING DIAGRAM

9-2 Service Manual – VBZ DCI 1-A.1 GB

9.3 YAZ214

WIRING DIAGRAM

9.4 YAZ318

Service Manual – VBZ DCI 1-A.1 GB 9-3

WIRING DIAGRAM

9-4 Service Manual – VBZ DCI 1-A.1 GB

9.5 YAZ430

WIRING DIAGRAM

9.6 Wiring connection between IDU and ODU

Service Manual – VBZ DCI 1-A.1 GB 9-5

WIRING DIAGRAM

10. REFRIGERATION DIAGRAMS

Service Manual – VBZ DCI 1-A.1 GB 10-1

TUBING CONNECTIONS

11. TUBING CONNECTIONS TUBING CONNECTIONS

Service Manual – VBZ DCI 1-A.1 GB 11-1

CONTROL SYSTEM

12. CONTROL SYSTEM

12.1 Electronic Control

12.1.1 Abbreviations

Abbreviation Definition

A/C

Air Condition

BMS

Building Management System

PWR

System Power

CTT

Compressor Top Temperature sensor

DCI

DC Inverter

EEV

Electronic Expansion Valve

HE

Heating Element

HMI

Human Machine Interface

HST

Heat Sink Temperature sensor

Hz

Hertz (1/sec) – electrical frequency

ICT

Indoor Coil Temperature (RT2) sensor

IDU

Indoor Unit

MCU

Micro Controller Unit

OAT

Outdoor Air Temperature sensor

OCT

ODU Coil Temperature sensor

ODU

Outdoor Unit

OFAN

Outdoor Fan

PFC

Power Factor Corrector

RAC

Residential A/C

RC

Reverse Cycle (Heat Pump)

RGT

Return Gas Temperature sensor

RPS

Rounds per second (mechanical speed)

RV

Reverse Valve

SB,STBY

Stand By

SUCT

Compressor Suction Temperature sensor

S/W

Software

TBD

To Be Defined

TMR

Timer

Service Manual – VBZ DCI 1-A.1 GB 12-1

CONTROL SYSTEM

12-2 Service Manual – VBZ DCI 1-A.1 GB

12.1.2 Compressor Frequency Control

12.1.2.1 Compressor frequency setting

The Load calculation is done by each indoor unit controller, based on a PI control scheme which

is based on the difference between SPT and RAT.

ODU controller will decide the compressor frequency based on the total load from all the indoors.

Compressor frequency will be limited within following ranges:

Minimum Frequency (MinFreq)

Maximum Frequency (MaxFreq) *

Mode

VBZ214 VBZ318 VBZ430 VBZ214 VBZ318 VBZ430
Cooling 15 15 15 110 110 110
Heating 15 15 15 110 110 110

* Maximum frequency is also decided by different indoor combinations.

12.1.2.2 Frequency Changes Control

Frequency change rate is 1 Hz/sec.

12.1.2.3 Compressor Starting Control

30Hz

40Hz

50Hz

60Hz

70Hz

80Hz

90Hz

1min 2min 2min

12.1.2.4 Minimum On and Off Time

Prohibit turning ON the compressor for 3 minutes after turning it off. (Except during deicing
protection)
Prohibit turning OFF the compressor for 7 minutes after turning it on (except protections required
immediate compressor stop)

CONTROL SYSTEM

Service Manual – VBZ DCI 1-A.1 GB 12-3

12.1.3 Indoor Fan Control

8 Indoor fan speeds are determined for each model. 4 speeds for COOL modes and 4 speeds for
HEAT mode.

Unit Model Mode Turbo(Super high) High Medium Low

Cooling 1300 1100 900 700 09
Heating 1300 1140 980 820
Cooling 1350 1150 950 750 12
Heating 1350 1190 1020 850
Cooling 1350 1100 950 800 18
Heating 1400 1200 1050 900

In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed.

In Auto Fan user setting, fan speed will be adjusted automatically according to the difference
between actual room temperature (RAT) and user set point temperature (SPT).

Indoor Fan speed High Medium Low

Cooling >=2 (0,2) <=0

RAT-SPT

Heating <=1 (1,3) >=3

During Auto Fan operating, one speed should keep at least 210sec operating before switching to
other speeds.
In DRY mode, the automatic fan speed is forced to be low.

12.1.3.1 Turbo Speed

In COOL and HEAT mode (not available in AUTO, DRY, FAN mode), press the Turbo button, the
super high fan speed is selected on Remote control and the indoor fan rotates at super high speed.

12.1.4 Outdoor Fan Control

The outdoor fan motor is a 3 speed AC motor and controlled by the relays on outdoor controller.
OFAN speed will be changed according to OAT temperature.

12.1.5 EEV Control

12.1.5.1 EEV homing

When compressor stops or unit is power on, the following is performed immediately:

- All EEV’s are closed 520 steps and then set this opening as 0 step.

- Then All EEVs are opened 480 steps and ready for system staring.

CONTROL SYSTEM

12-4 Service Manual – VBZ DCI 1-A.1 GB

12.1.5.2 EEV initial value determination

The EEV initial value (open loop) is determined according to the number of the active indoor
units, mode, and the capacity code of the unit.

12.1.5.3 Balance time

During the balance after SB the correction is not calculated. After that the correction value is

updated every 5 seconds.

12.1.5.4 EEV corrections

The corrections will keep the compressor in the proper operation temperature (Target CTT
control) and will balance between the indoor units by controlling their super heat.

12.1.5.5

EEV opening of inactive indoors

Under Cool Mode/Dry Mode, relative EEV of inactive indoor will be fully closed to 0.
Under Heat Mode, relative EEV of inactive indoor will maintain an opening in a range so that
refrigerant and oil can come back to outdoor.

12.1.6 Reversing Valve (RV) Control

Reversing valve is on in heat mode.
Switching of RV state is done only after compressor is OFF for over 2 minutes.

12.2 Fan Mode

In this mode, the indoor fan may run at high, medium, low and automatic speed. The compressor,
outdoor fan and 4-way valve will be OFF.
In this mode, the range of setting temperature is 16~30C

12.3 Cool Mode

12.3.1 Starting Cool Mode

If the system is in idle, when any one indoor requests the cooling mode operating, the system will
run in Cool Mode. EEV, OFAN and compressor will start operating.

12.3.2 Compressor’s action w hen Indoor changed to inactive (OFF or
Thermo OFF)

12.3.2.1 All indoors to inactive

Compressor stops immediately, OFAN stops after 1 min.

CONTROL SYSTEM

Service Manual – VBZ DCI 1-A.1 GB 12-5

12.3.2.2 Partial indoors to inactive

Recalculate the load immediately, for Inactive indoors, EEV opening is set to 0 step.

12.3.3 RV

RV is OFF in Cool Mode.

12.3.4 OFAN control during Cool Mode

OFAN will start 5sec before compressor start. After starting, it will run at High speed for 3 mins, and
then switch to the requested speed.
OFAN will run at one speed for at least 80sec, except the condition of the active indoor amount
changing.
After compressor stopping, the OFAN will keep the current speed for 1min and then stop.

12.3.5 Oil return operation during Cool Mode

12.3.5.1 Starting oil return

Oil return operation is to avoid compressor operating with low frequency for long time.

12.3.5.2 Oil return operation

Indoor display shows “H1”
Compressor is forced to run higher frequency.

12.3.5.3 Exiting oil return

The oil return operating time reaches 5min (Including frequency’s changing time)

12.3.6 Indoor Fan operation under Cool Mode

In manual fan speed (Turbo/Hi/Med/low) setting, IFAN will operate at the setting speed.

In Auto Fan user setting, fan speed will be adjusted automatically according to the SPT and RAT,
refer to 12.1.3

12.4 Heat Mode

12.4.1 Condition of starting Heat Mode

If the system is in idle, when any one indoor request the heating mode operating, the system will
run in Heat Mode. EEV, OFAN and compressor will start operating.

12.4.2 Compressor’s action w hen Indoor changed to inactive (OFF or
Thermo OFF)

CONTROL SYSTEM

12-6 Service Manual – VBZ DCI 1-A.1 GB

12.4.2.1 All indoors to inactive

Compressor stops immediately, OFAN stops after 1 min.

12.4.2.2 Partial indoors to inactive

Recalculate the load immediately, for Inactive indoors, EEV opening will follow 12.1.5.5.

12.4.3 OFAN control during Heat Mode

OFAN will start 5sec before compressor starts. After starting, it will run at High speed for 40 sec
then switch to the requested speed.
OFAN will run at one speed for at least 80sec.
After compressor stopping, the OFAN will keep the current speed for 1min and then stop.

12.4.4 Oil return operation during Heat Mode

12.4.4.1 Starting oil return

Oil return operation is to avoid compressor operating with low frequency for long time.

12.4.4.2 Oil return operation

Indoor display shows “H1”
System will run at Cool Mode. Compressor is forced to run higher frequency. And both IFAN and
OFAN are stopped.

12.4.4.3 Exiting oil return

The oil return operating time reaches 5min (Including frequency’s changing time)

12.4.5 Indoor Fan Control in Heat Mode

Indoor fan speed depends on the indoor coil temperature

Anti-cold air function

When starting the heating mode, anti-cold air function will be activated and indoor fan can run at low
speed or stop running. This function will terminate after the unit runs for 3min or the ICT reaches 42
degree.

Residual heat blowing function

During heating, when the stopping condition for the compressor is reached, the compressor and the
outdoor fan motor stop running while the louver moves to position L. The indoor fan will stop after
running for 60s at setting speed.

CONTROL SYSTEM

Service Manual – VBZ DCI 1-A.1 GB 12-7

12.5 8 Degree Heat Mode

Under heat mode, press “Save” button, the system will enter into 8 Degree Heat Mode.

1. 8 Degree Heat Mode can not exist together with Sleep mode. If Sleep Mode is selected, 8

degree Heat Mode will be canceled.

2. The SPT will be 8 degree and display will show the SPT,

3. Under this mode, IFAN can not be changed manually (Including Turbo speed)

4. Under this mode, IFAN will operate as following table when compressor is ON. When

compressor stops, IFAN will operate as “Residual heat blowing function” (refer to 12.4.5)

Indoor Fan speed High Medium Low

RAT <=9 (9,11) >=11

One speed should keep at least 210sec operating before switching to other speeds.

12.6 Auto Cool/Heat Mode

In AUTO mode, the system selects the running mode (COOL/HEAT/FAN) automatically according
to the room temperature. The display shows the actual running mode and setting temperature.
There will be 30s delay for mode conversion.

1. When RAT≥26 degree, the cooling mode is selected.

2. When RAT≤22 degree, the unit runs in heating mode

3. When 22 degree <RAT< 26 degree, upon initial startup, the unit will enter auto mode and run in

automatic fan mode. If the other mode changes into auto mode, the previous running mode will
remain. (Except from Dry Mode, system will run in automatic fan mode)

12.7 Dry Mode

Dry Mode is same as Cool Mode in EEV, OFAN and compressor control except following:

1) IFAN will be forced to Low speed.

2) For indoor working under Dry mode, Max capacity output is 90% of Cool Mode

In this mode, the Reverse Valve will be OFF and the temperature setting range is 16~30.

12.8 Protections

There are 4 protection codes.
Normal (Norm) – unit operate normally.
Stop Rise (SR) – compressor frequency can not be raised but does not have to be decreased.
HzDown – Compressor frequency is reduced by 1Hz/s (2Hz/s for current protection)
Stop Compressor (SC) – Compressor is stopped.

CONTROL SYSTEM

12-8 Service Manual – VBZ DCI 1-A.1 GB

12.8.1 Mode confliction

When there are different mode settings among active indoors:

a. First request priority:

The first IDU which requests different mode than STBY mode will set the new operation mode.
Mode confliction will be decided comparing with other IDUs’ modes. Cool (Dry) mode is conflict to
Heat mode.
The mode will change once all the units exit the current operation mode.

b. Fan mode is conflict to Heat mode:

Heat Mode is the priority mode, Fan Mode is conflict to Heat Mode no matter the IDU is first IDU or
not. The indoor will run in Heat Mode.

When the current IDU operating mode is conflict to other IDUs under operating, the current IDU:

1. IDU display will show “E7”.

2. The operating mode is still transferred to the outdoor unit.

12.8.2 Indoor Coil Defrost Protection

During cooling operation, the signals being sent from the indoor unit allow the operating frequency
limitation and then prevent freezing of the indoor heat exchanger.

Compressor will stop when ICT <= -1C for continuous 10sec.

If the unit stops as such protection for 6 times (the counter will be cleared after the compressor has

run for 7min), it can not resume running automatically and display malfunction, it can resume by

power reset.

12.8.3 Indoor/Outdoor Coil over Heating Protection

During heating operation, the signals being sent from the indoor unit/outdoor allow the operating
frequency limitation and prevent abnormal high pressure.
Compressor frequency will be reduced when ICT/OCT reaches above 58C
Compressor will stop when ICT/OCT reaches 65C

If the unit stops as such protection for 6 times (the counter will be cleared after the compressor has

run for 7min), it can not resume running automatically and display malfunction, it can resume by

power reset.

CONTROL SYSTEM

Service Manual – VBZ DCI 1-A.1 GB 12-9

12.8.4 Compressor over Heating Protection

The Discharging temperature is used as the compressor’s internal temperature. If the discharge
temperature rises above a certain level, the operating frequency upper limit is set to keep this
temperature from going up further.

Compressor frequency will be reduced when CTT reaches above 97C
Compressor will stop when CTT reaches 110C

If the unit stops as such protection for 6 times (the counter will be cleared after the compressor has

run for 7min), it can not resume running automatically and display malfunction, it can resume by

power reset.

12.8.5 Compressor over Current Protection

Detect an input current by the CT during the compressor is running, and set the frequency upper
limit from such input current. In case of heat pump model, this control is the upper limit control
function of the frequency which takes priority of the lower limit of four way valve activating
compensation.
Detail

For model 14: Compressor will stop when AC current >= 16.0A for continuously 2.5s
For model 18/30: Compressor will stop when AC current >= 20.0A for continuously 2.5s

If the unit stops as such protection for 6 times (the counter will be cleared after the compressor has
run for 7min), it can not resume running automatically and display malfunction, it can resume by
power reset.

12.8.6 Outdoor Coil Deicing Protection

This protection is for Heat Pump Only
This protection is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor
heat exchanger temperature must be more than its setting values when finishing the deicing
protection.
In the deicing protection, IFAN is forced OFF.

12.8.6.1 Deicing Starting Conditions

The starting conditions must be made with the outdoor air temperature (OAT) and outdoor coil
temperature (OCT). Under the conditions that the system is in heating operation, after the time for
defrosting is judged to be satisfied, if the temperature for deicing is satisfied after detections for
continuous 1 minute, the deicing operation will start.

CONTROL SYSTEM

12-10 Service Manual – VBZ DCI 1-A.1 GB

Deicing interval time is changed as a function of deicing time. If deicing time is shorter than former
deicing time, the deicing interval time will be increased. If deicing time is longer than former deicing
time, the deicing interval time will be decreased.

12.8.6.2 Deicing Protection Procedure

When starting deicing from Heat Mode, system will work as following:

1). Compressor stops. OFAN and RV will be OFF after 40s

3). Compressor starts and deicing time is counted. Compressor frequency will go to Deicing
Frequency.

12.8.6.3 Exiting Deicing

System will exit the deicing until OCT reaches to certain value (depends on OAT) or the
deicing time reaches 12 min as maximum.

12.8.7 Communication malfunction

Connected IDU number detection
If ODU does not receive correct signal from one IDU for 3min continuously, the ODU will
take this IDU as not connected one. But ODU will still send the broadcast to this IDU. If
response were received, then ODU will take it as connected.

12.8.8 IPM module protection

When the compressor starts, if there is over current or control voltage low for IPM module as
some abnormal results, IPM will detect module protection signal as the unit is on. Once the
module protective signal is detected, stop the unit with module protection immediately. If the
module protection is resumed and compressor has stopped for 3min, the unit will be allowed
to operate.

If the module protection continuously occurs for 6 times (the counter will be cleared after the

compressor has run for 7min), it can not resume running automatically and display malfunction, it

can resume by power reset.

12.8.9 HP switch protection

If the HP switch is opened for 3S continuously, the system will stop as protection

After the HP switch protection, if HP switch is resumed for continuous 6s, the system
operating can be resumed by power reset.

12.8.10 Module overheating protection

If the module temperature is higher than 95C, the unit will stop. If module temperature is lower than
95C, and compressor has stopped for 3min, the unit will resume operating.
If the unit stops as module overheating protection for 6 times (the counter will be cleared after the

CONTROL SYSTEM

compressor has run for 7min), it can not resume running automatically and display malfunction, it

can resume by power reset.

12.8.11 Compressor overload protection

If the compressor OLP is opened, the system will stop as protection
If the OLP is resumed and compressor has stopped for 3min, the unit will be allowed to
operate.

If the unit stops as compressor overload protection occurred for 6 times continuously (the

counter will be cleared after the compressor has run for 30min), it can not resume running

automatically and display malfunction, it can resume by power reset.

12.8.12 Compressor Phase protection

If any phase is detected open when compressor starting, the system will stop as protection.
The protection will be cleared after 1 min and system will try to restart.
If the unit stops as Phase protection for 6 times (the counter will be cleared after the compressor

has run for 7min), it can not resume running automatically and display malfunction, it can resume by

power reset.

12.9 Operating the Unit from the ON/OFF Button

The ON/OFF button allows to operate the unit in AUTO mode, the microcomputer will monitor the
room temperature and select the (COOL, HEAT, FAN) mode automatically, and temperature/Fan
speed settings can not be changed.

12.10 Indoor Unit Controllers and Indicators

The following is schematic drawing for the display:

RUN INDICATOR

1. Lights up when the Air Conditioner is connected to power and

Service Manual – VBZ DCI 1-A.1 GB 12-11

CONTROL SYSTEM

12-12 Service Manual – VBZ DCI 1-A.1 GB

the mode is STBY.

2. When the unit is turned on remotely, the RUN LED goes out

while the current setting running mode is displayed

COOL INDICATOR
DRY INDICATOR
HEAT INDICATOR

1. Lights up during specified operation mode
(COOL/DRY/HEAT).

2* 7 segments display 1. In normal situation, the setting temperature is displayed.

2. Shows outdoor temperature or indoor temperature when

receiving the corresponding demand from controller. It resumes
displaying setting temperature 5s later

3. Shows H1 during deicing in heating mode.

4. Shows the alarm code whenever there is an alarm.(Refer to

Diagnostic part)

Unit ON/OFF Button

Single pressing: Unit will switch between Auto mode and STBY.

System will select the COOL/HEAT/FAN mode automatically and
temperature/Fan speed settings can not be changed.

CONTROL SYSTEM

Service Manual – VBZ DCI 1-A.1 GB 12-13

12.10.1 Installation Test

Installation test is to check any mistake in communication wiring or EEV wiring connections.

Start Installation Test:
RC setting: SPT=30, Cool Mode and press the button “-, +,-, +,-, +” continuously in 3 sec.

Unit operation during Installation test:
Unit will operate in cool mode (IFAN will stop), IDU will display “dd”. Total operating time depends
on IDU numbers, for each IDU maximum operating time is 3min.

Finish the Installation test:
IDU will cancel displaying “dd”, and will display “dn” if any mistake of communication wiring or EEV
wiring is detected from ODU.

12.11 Forced Deicing

Start Forced Deicing

Under Heat Mode, RC setting with SPT=16, and press the button “+,-,+,-,+,-” continuously in 5 sec.
The Forced Deicing request will be sent to ODU.

After ODU received the Forced Deicing request, IDU will cancel the setting and request of Forced
Deicing

System operation will follow 12.8.6.2 and 12.8.6.3 during Forced Deicing.

12.12 Forced Mode (Compulsory operating function).

Entering into forced mode :

After the unit is powered for 5mins, press the light button on remote controller for 3 times in 3s
successively to enter into Freon recovery mode. “Fo” will be displayed. When Freon recovery mode
operated for 25mins, all loads will operate in cooling mode. (The setting fan speed is high fan speed
and the setting temperature is 16C )

Exiting forced mode:

Any signal from remote controller or button will exit the forced mode, and then the unit will operate
at the current setting command.
Forced mode will also be exited after operating for 25mins and then the unit will operate with the

last operating mode.

TROUBLESHOOTING

13. TROUBLESHOOTING

13.1 ELECTRICAL & CONTROL TROUBLESHOOTING

13.1.1

Precautions before Performing Inspection or Repair

Be cautious during installation and maintenance. Do operation following the regulations to
avoid electric shock and casualty or even death due to drop from high attitude.

* Static maintenance is the maintenance during de-energization of the air conditioner.

For static maintenance, make sure that the unit is de-energized and the plug is disconnected.

*Dynamic maintenance is the maintenance during energization of the unit. Before dynamic

maintenance, check the electricity and ensure that there is ground wire on the site. Check if
there is electricity on the housing and connection copper pipe of the air conditioner with voltage
tester. After ensure insulation place and the safety, the maintenance can be performed.

Take sufficient care to avoid directly touching any of the circuit parts without first turning off the
power. At time such as when the circuit board is to be replaced, place the circuit board
assembly in a vertical position. Normally, diagnose troubles according to the trouble diagnosis
procedure as described below.(Refer to the check points in servicing written on the wiring
diagrams attached to the indoor/outdoor units.)

Precautions when inspecting the control section of the outdoor unit:

A large-capacity electrolytic capacitor is used in the outdoor unit controller (inverter).Therefore,
if the power supply is turned off, charge(charging voltage DC280V to 380V)remains and
discharging takes a lot of time. After turning off the power source, if touching the charging
section before discharging, an electrical shock may be caused.
The outdoor unit can not be started up until the unit is de-energized for 20min

13.1.2 Confirmation

13.1.2.1 Confirmation of Power Supply Confirm that the power breaker operates(ON)
normally;

13.1.2.2 Confirmation of Power Voltage Confirm that power voltage is AC220~240V +/­10%. If power voltage is not in this range, the unit may not operate normally.

Service Manual – VBZ DCI 1-A.1 GB 13-1

TROUBLESHOOTING

13-2 Service Manual – VBZ DCI 1-A.1 GB

13.1.3 Fault Code display from ODU

The ODU will show the active fault code by its LED1, LED2, LED3 and LED4.

When more than one active fault codes exist, each fault code will display in 5s interval.

□ – LED OFF, ■ – LED ON, ☆ – LED Blinking

No. Fault code LED1 LED2 LED3 LED4

0 STBY □ □ □ □

1 Operation (COMP ON) ■ □ □ □

2 Stop for compressor OLP protection

☆

□ □ □

3 Stop for compressor over heating protection □ ■ □ □

4 Stop for ODU over heating protection ■ ■ □ □

5 Stop for HP switch protection

☆

■ □ □

6 Stop for AC over current protection □

☆

□ □

7 IPM protection ■

☆

□ □

8 IPM overheating protection

☆ ☆

□ □

9 PFC protection □ □ ■ □

10 Stop for DC over current protection ■ □ ■ □

11 DC over Voltage protection

☆

□ ■ □

12 DC under Voltage protection □ ■ ■ □

13 Compressor startup failure ■ ■ ■ □

14 Desynchronizing of compressor

☆

■ ■ □

15 Lack phase protection of compressor □

☆

■ □

16 Compressor phase current detection problem ■

☆

■ □

17 EEPROM failure

☆ ☆

■ □

18 DC power circuit short □ □

☆

□

19 Deicing ■ □

☆

□

20 Oil return

☆

□

☆

□

21 Compressor Stop Rise □ ■

☆

□

22 Compressor Hz Down ■ ■

☆

□

23 Stop Rise/Hz down from IDU-A

☆

■

☆

□

24 Stop Rise/Hz down from IDU-B □

☆ ☆

□

25 Stop Rise/Hz down from IDU-C ■

☆ ☆

□

26 Stop Rise/Hz down from IDU-D

☆ ☆ ☆

□

27 OAT failure □ □ □ ■

28 OCT failure ■ □ □ ■

29 CTT failure ☆ □ □ ■

30 HST failure □ ■ □ ■

31 RLT-A failure ■ ■ □ ■

32 RGT-A failure ☆ ■ □ ■

33 RLT-B failure □ ☆ □ ■

34 RGT-B failure ■ ☆ □ ■

35 RLT-C failure ☆ ☆ □ ■

TROUBLESHOOTING

Service Manual – VBZ DCI 1-A.1 GB 13-3

36 RGT-C failure □ □ ■ ■

37 RLT-D failure ■ □ ■ ■

38 RGT-D failure ☆ □ ■ ■

39 IDU-A mode conflict □ ■ ■ ■

40 IDU-B mode conflict ■ ■ ■ ■

41 IDU-C mode conflict ☆ ■ ■ ■

42 IDU-D mode conflict □ ☆ ■ ■

43 Chanel-A communication malfunction ■ ☆ ■ ■

44 Chanel-B communication malfunction ☆ ☆ ■ ■

45 Chanel-C communication malfunction □ □ ☆ ■

46 Chanel-D communication malfunction ■ □ ☆ ■

47 IDU-A defrost protection ☆ □ ☆ ■

48 IDU-B defrost protection □ ■ ☆ ■

49 IDU-C defrost protection ■ ■ ☆ ■

50 IDU-D defrost protection ☆ ■ ☆ ■

51 IDU-A overheating protection □ ☆ ☆ ■

52 IDU-B overheating protection ■ ☆ ☆ ■

53 IDU-C overheating protection ☆ ☆ ☆ ■

54 IDU-D overheating protection □ □ □ ☆

TROUBLESHOOTING

13-4 Service Manual – VBZ DCI 1-A.1 GB

13.1.4 Fault Code display from IDU

If the malfunction still exists 4min later after stop of unit due to compressor protection, error code will be

directly displayed though indoor display. In other situations, fault code can be displayed by pressing

LIGHT button 6 times within 4s.

Fault code can be displayed on 2*7 segments or by the LEDs blinking (OFF for 3s and then with certain

blinking as following)

LEDs blinking

Fault description

2* 7

segments

RUN COOL HEAT

Possible Reason

HP switch protection E1 1

1. Refrigerant was superabundant

2. Poor heat exchange (including blockage
and bad radiating environment )

3. Too high ambient temperature

Indoor coil defrost Protection E2 2

1. Poor air-return in indoor unit

2. Fan speed is abnormal

3. Evaporator is dirty.

Compressor over Heating
Protection

E4 4

1. EEV connection problem or damage

2. Refrigerant leakage

3. Poor heat exchange

A

C Over current protection E5 5

1. Supply voltage is unstable

2. Supply voltage is too low and load is too
high

Communication malfunction E6 6

1. Wiring mistakes

2. IDU or ODU PCB problem

Mode conflict E7 7 Mode conflict to other IDU

Indoor coil/Outdoor coil over
heating protection

E8 8

1. Too high ambient temperature

2. Poor heat exchange (including blockage
and bad radiating environment )

No feedback of indoor motor H6 11

1. IFAN motor damaged

2. IFAN motor blocked

3. IDU PCB problem

Malfunction protection of jumper
cap

C5 15 Poor connection of the jumper on indoor PCB.

Zero-crossing protection (IDU) U8 17

1. IFAN motor damaged

2. Zero-crossing circuit damaged on IDU
PCB

Mismatch of IDU and ODU LP 19
RAT failure F1 1
ICT failure F2 2
OAT failure F3 3
CTT failure F5 5

1. Senor was broken or damaged

2. PCB temperature detection circuit has
problem

DC over voltage PH 11

1. AC input voltage is too high.

2. Reactor has problem

3. ODU PCB has problem

OCT failure F4 18
RLT failure b5 19
RGT failure b7 22

1. Senor was broken or damaged

2. PCB temperature detection circuit has
problem

Compressor overload protection H3 3

1. EEV connection problem or damaged

2. Refrigerant leakage

3. OLP damaged

IPM protection H5 5

1. Abnormal power input voltage.

2. Compressor wiring mistake.

3. Liquid and gas valve are not open.

4. EEV damaged or not proper working

5. Poor heat exchange.

6. Over charged system.

PFC protection HC 6 1. PFC module assembly problem.

TROUBLESHOOTING

Service Manual – VBZ DCI 1-A.1 GB 13-5

2. Poor heat exchange of Heatsink

3. PFC reactor problem.

4. Abnormal power voltage

5. PFC circuit problem on PCB

Desynchronizing of compressor H7 7

1. Abnormal power input voltage.

2. Compressor wiring mistake.

3. Liquid and gas valve are not open.

4. EEV damaged or not proper working

5. Poor heat exchange.

6. Over charged system.。

Compressor start-up failure Lc 11

1. Compressor wiring mistake

2. Over charged system

3. System not balanced before compressor
starting

4. Compressor problem

Compressor phase current
detection problem

U1 12

Phase current detection circuit for compresso

r

has problem.

DC over current P5 15

1. Abnormal power input voltage.

2. Compressor wiring mistake.

3. Liquid and gas valve are not open.

4. EEV damaged or not proper working

5. Poor heat exchange.

6. Over charged system.

Charging malfunction of
capacitor

PU 17

1. Reactor open

2. Charging relay or other components
damaged on PCB.

HST failure P7 18

1. Senor was broken or damaged

2. PCB temperature detection circuit has
problem

HST over heating protection P8 19

1. Insufficient attachment of IPM module to
Heatsink

2. Outdoor PCB problem.

DC under voltage PL 21

1. AC input voltage is too low

2. Reactor has problem

3. ODU PCB has problem

Lack Phase Protection of
Compressor

Ld

1. Compressor wiring problem

2. Compressor problem

3. IPM module problem or compressor
current detection circuit has problem

4. Compressor malfunction due to EEV
problem

13.1.5 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 please refer to section 12- Control system.

13.2 Simple procedures for checking the Main Parts

13.2.1 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).

13.2.2 Checking Power Input.

TROUBLESHOOTING

13-6 Service Manual – VBZ DCI 1-A.1 GB

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.

13.2.3 Checking the Outdoor Fan Motor.

Enter Test Mode (where the OFAN speed is high)
Check the voltage between two pins( Hi and N ) of connector Controller OFAN, normal voltage
is 220VAC.

13.2.4 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 is

~0.452ohm.(Model 14) and ~0.88ohm(Model 18/30)Pay attention U,V, W are respective to

connect to RED,YELLOW,BLUE wires.

13.2.5 Checking the Reverse Valve (RV).

Running in heating mode, check the voltage between two pins of reverse valve connector,
normal voltage is 220VAC.

CHARACTERISTICS OF SENSOR

14. CHARACTERISTICS OF SENSOR CHARACTERISTICS OF SENSOR

14.1.1 RAT/OAT 14.1.1 RAT/OAT

RAT/OAT R-T chart

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140

-20-15-10-5 0 5 10152025303540455055606570

Temperature(C)

Resistance(Kohm)

14.1.2 ICT/OCT/RGT/RLT

ICT/OCT R-T Chart

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140

150

160

170

180

-20-15-10-5 0 5 10152025303540455055606570

Temperature(C)

Resistance(Kohm)

Service Manual – VBZ DCI 1-A.1 GB 14-1

CHARACTERISTICS OF SENSOR

14-2 Service Manual – VBZ DCI 1-A.1 GB

14.1.3 CTT

CTT R-T Chart

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140

150

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90

Temperature(C)

Resistance(Kohm)

EXPLODED VIEW & SPARE PART LIST

15. EXPLODED VIEW & SPARE PART LIST

15.1 Exploded view of indoor unit: JYD009-012

Service Manual – VBZ DCI 1-A.1 GB 15-1

EXPLODED VIEW & SPARE PART LIST

15-2 Service Manual – VBZ DCI 1-A.1 GB

15.2 Spare part list of indoor Unit: JYD009

NO. Part Code Part Description qty
1 02122033 Decorative Strip 1
2 2001237604_K47371 Front Panel Assy 1
3 1112208201 Filter Sub-Assy 2
4 24252019 Screw Cap 1
5 2001237501_K47371 Front Case Assy 1
6 10512119 Guide Louver 1
7 1054202001 Shaft of guide louver 2
8 10512160 Air Louver 2
9 26112486 Helicoid tongue 1
10 2220211901_K47371 Rear Case assy 1
11 76712020 Pipe plug (outlet) 1
12 10542024 Axile Bush sub-assy 1
13 76512011 Damping washer sub-assy 1
14 400204056 Connecting Cable 1
15 30510136_K47371 Remote Controller 1
16 39000305 sensor 1
17 390000453 Ambient Temperature Sensor 1
18 24212108 Evaporator Support 1
19 01002270 Evaporator Assy 1
20 0125201801A Wall Mounting Frame 1
21 10352423 Cross Flow Fan 1
22 26112191 Motor Press Plate 1
23 15002002 Motor Sub-Assy 1
24 26112218 Baffle Plate 1
25 0523204101 Drainage Pipe Sub-assy 1
26 1521210701 Step Motor 1
27 73012005 Crank 1
28 2020225308 Electric Box Assy 1
29 20112086 Electric Box 1
30 22242084 Indicator Light Cover 1
31 42011233 4-bit Terminal Board 1
32 22242083 Indicator shield cover 1
33 30138682 Main Board 1
34 33010002 Capacitor CBB61 1
35 4202300101 Jumping Connector 1
36 20122109 Electric Box Cover Sub-Assy 1
37 20122106 Electric Box Cover 1

EXPLODED VIEW & SPARE PART LIST

Service Manual – VBZ DCI 1-A.1 GB 15-3

15.3 Spare part list of indoor Unit: JYD012

NO. Part Code Part Description qty
1 02122033 Decorative Strip 1
2 2001237604_K47371 Front Panel Assy 1
3 1112208201 Filter Sub-Assy 2
4 24252019 Screw Cap 1
5 2001237501_K47371 Front Case Assy 1
6 10512119 Guide Louver 1
7 1054202001 Shaft of guide louver 2
8 10512160 Air Louver 2
9 26112486 Helicoid tongue 1
10 2220211901_K47371 Rear Case assy 1
11 76712020 Pipe plug (outlet) 1
12 10542024 Axile Bush sub-assy 1
13 76512011 Damping washer sub-assy 1
14 400204056 Connecting Cable 1
15 30510136_K47371 Remote Controller 1
16 39000305 sensor 1
17 390000453 Ambient Temperature Sensor 1
18 24212108 Evaporator Support 1
19 01002745 Evaporator Assy 1
20 0125201801A Wall Mounting Frame 1
21 10352423 Cross Flow Fan 1
22 26112191 Motor Press Plate 1
23 15002002 Motor Sub-Assy 1
24 26112218 Baffle Plate 1
25 0523204101 Drainage Pipe Sub-assy 1
26 1521210701 Step Motor 1
27 73012005 Crank 1
28 2020225309 Electric Box Assy 1
29 20112086 Electric Box 1
30 22242084 Indicator Light Cover 1
31 42011233 4-bit Terminal Board 1
32 22242083 Indicator shield cover 1
33 30138682 Main Board 1
34 33010002 Capacitor CBB61 1
35 4202300103 Jumping Connector 1
36 20122109 Electric Box Cover Sub-Assy 1
37 20122106 Electric Box Cover 1

EXPLODED VIEW & SPARE PART LIST

15-4 Service Manual – VBZ DCI 1-A.1 GB

15.4 Exploded view of indoor unit: JYD018

EXPLODED VIEW & SPARE PART LIST

Service Manual – VBZ DCI 1-A.1 GB 15-5

15.5 Spare part list of indoor Unit: JYD018

NO. Part Code Part Description qty

2 20012663 Front Case 1

20012496_K47371 Front Panel Assy 1
3 11122104 Filter Sub-Assy 2
4 242520041 Screw Cover 1
5 20012497_K47371 Front Case Assy 1
6 10512140 Guide Louver 1
7 10542008 Axial Bush (guide louver) 1
8 10512160 Air Louver 2
9 26112232 Helicoid tongue 1

10 22202154 Rear Case assy 1
11 76712012 Water Tray Glue Plug 1
12 76512051 O-Gasket sub-assy of Bearing 1
13 400204056 Connecting Cable 0
14 30510136_K47371 Remote Controller 1
15 390000591 Tube Sensor (20K black) 1
16 390000453 Ambient Temperature Sensor 1
17 24212119 Evaporator Support 1
18 0100260301 Evaporator Assy 1
19 01252484 Wall Mounting Frame 1
20 10352036 Cross Flow Fan 1
21 26112231 Motor Press Plate 1
22 15012116 Motor 1
23 26112164 Pipe Clamp 1
24 0523001407 Drainage hose 1
25 15012086 Step Motor 1
26 10582070 Crank 1
27 2020240402 Electric Box Assy 1
28 20112103 Electric Box 1
29 22242084 Indicator Light Cover 1
30 4201026601 Terminal Board(three-bit) 1
31 22242083 Indicator shield cover 1
32 30138685 Main Board 1
33 33010043 Capacitor 1
34 4202300105 Jumper Cap 1
35 01592088 Shield Cover of Electric box Cover 1
36 20122123 Electric Box Cover 1
37 01592087 Shield cover of Electric Box 1

10512037 Left Axial Bush 1

30568112 Display Board 1

11012025 Air Cleaner 1

111220071 Photo catalysis Filter 1

EXPLODED VIEW & SPARE PART LIST

15-6 Service Manual – VBZ DCI 1-A.1 GB

15.6 Exploded view of outdoor unit: VBZ214

EXPLODED VIEW & SPARE PART LIST

Service Manual – VBZ DCI 1-A.1 GB 15-7

15.7 Spare part list of outdoor Unit: VBZ214

NO. Part Code Part Description qty
1 22413015 Front Grill 1
2 01433034P Cabinet 1
3 01205161P Chassis Sub-assy 1
4 26113009 Drainage Joint 1
5 76710236 Compressor Gasket 3
6 00103501 Compressor And Fittings C-6RZ146H1A 1
7 4300040033 4-way Valve Fittings 1
8 03123438 4-way Valve Assy 1
9 3900007301 Temperature Sensor 1
10 39000073 Tube Temperature Sensor 1
11 071302391 Cut-off Valve 2
12 07130239 Cut-off Valve 2
13 22242101 Valve cover 1
14 26233048 Big Handle 1
15 4300008401 Electric expand valve fitting 1
16 43000084 Electric expand valve fitting 1
17 43120130 PFC Inductance 1
18 01233117 Clapboard Sub-Assy 1
19 3900030901 Temperature Sensor 1
20 01475019 Rear Grill 1
21 01113763 Condenser Assy 1
22 01253034P Top Cover 1
23 01703398 Motor Support Sub-Assy 1
24 01303169P Left Side Plate 1
25 02603411 Electric Box Assy 1
26 40020318 Connecting Cable 1
27 15013162 Fan Motor 1
28 10333010 Axial Flow Fan 1
30033075 Filter Board 1
430004032 4-way Valve 1
07245101 Silencer 1
420111041 Terminal Board 2
42010178 Terminal Board 1
0721004501 Strainer 1
42020063 Sensor Insert 4
33010011 Capacitor 1
20113013 Electric Box 1
30138633 Main Board 1
07103067 Valve support assy 1
32003001 OH Thermistor(compressor) 1

EXPLODED VIEW & SPARE PART LIST

15-8 Service Manual – VBZ DCI 1-A.1 GB

15.8 Exploded view of outdoor unit: VBZ318

EXPLODED VIEW & SPARE PART LIST

Service Manual – VBZ DCI 1-A.1 GB 15-9

15.9 Spare part list of outdoor Unit: VBZ318

NO. Part Code Part Description qty
1 22415002 Front grill 1
2 01535008P Front Panel 1
3 06813401 Choke Plug 3
4 01203942P Chassis Sub-assy 1
5 06123401 Drainage Connecter 1
6 00105036 Compressor and fittings 1
7 76710207 Rubber Grommet 3
8 07225017 Gas-liquid Separator Assy 1
9 03723455 Inhalation Tube 1
10 01303194P Right Side Plate 1
11 0710306601 Valve support assy 1
12 071302391 Cut-off Valve 3
13 07130239 Cut-off Valve 3
14 20123029 Valve cover 1
15 3900007302 Temperature Sensor 1
16 3900007301 Temperature Sensor 1
17 39000073 Tube Temperature Sensor 1
18 4300008402 Electric expand valve fitting 1
19 07133456 Electronic Expansion Valve assy 1
20 4300008401 Electric expand valve fitting 1
21 43000084 Electric expand valve fitting 1
22 4300040033 4-way Valve Fittings 1
23 03123415 4-way Valve Assy 1
24 26115004 Wiring clamp 1
25 01233116 Clapboard assy 1
26 3900030901 Temperature Sensor 1
27 01473043 Rear Grill 1
28 01113710 Condenser Assy 1
29 01255005P Top Cover 1
30 0170512001 Motor Support Sub-Assy 1
31 01173415 Condenser support plate 1
32 01305041P Left Side Plate 1
33 26235401 Small Handle 1
34 01413150 Electric Box Cover 1
35 01413148 Electric box (fireproofing) 1
36 0260337201 Electric Box Assy 1
37 400205405 Connecting Cable 1
38 1501506303 Fan Motor 1
39 10335008 Axial Flow Fan 1
76518732 Electric Heater 1
33010010 Capacitor CBB61 3.5kuF/450V 1
430004032 4-way Valve 1
30138710 Main Board 1
460200061 Pressure Switch 1

EXPLODED VIEW & SPARE PART LIST

15-10 Service Manual – VBZ DCI 1-A.1 GB

15.10 Exploded view of outdoor unit: VBZ430

EXPLODED VIEW & SPARE PART LIST

Service Manual – VBZ DCI 1-A.1 GB 15-11

15.11 Spare part list of outdoor Unit: VBZ430

NO. Part Code Part Description qty
1 22415002 Front grill 1
2 01535008P Front Panel 1
3 06813401 Choke Plug 3
4 01203942P Chassis Sub-assy 1
5 06123401 Drainage Connecter 1
6 00105036 Compressor and fittings 1
7 76710207 Rubber Grommet 3
8 07225017 Gas-liquid Separator Assy 1
9 03723455 Inhalation Tube 1
10 01303194P Right Side Plate 1
11 07103066 Valve support assy 1
12 071302391 Cut-off Valve 4
13 07130239 Cut-off Valve 4
14 20123029 Valve cover 1
15 3900007303 Temperature Sensor 1
16 3900007302 Temperature Sensor 1
17 3900007301 Temperature Sensor 1
18 39000073 Tube Temperature Sensor 1
19 4300008403 Electric expand valve fitting 1
20 4300008402 Electric expand valve fitting 1
21 4300008401 Electric expand valve fitting 1
22 43000084 Electric expand valve fitting 1
23 4300040033 4-way Valve Fittings 1
24 03123415 4-way Valve Assy 1
25 26115004 Wiring clamp 1
26 01233116 Clapboard assy 1
27 3900030901 Temperature Sensor 1
28 01473043 Rear Grill 1
29 01113710 Condenser Assy 1
30 01255005P Top Cover 1
31 0170512001 Motor Support Sub-Assy 1
32 01173415 Condenser support plate 1
33 01305041P Left Side Plate 1
34 26235401 Small Handle 1
35 01413150 Electric Box Cover 1
36 01413148 Electric box (fireproofing) 1
37 02603372 Electric Box Assy 1
38 400205405 Connecting Cable 1
39 1501506303 Fan Motor 1
40 10335008 Axial Flow Fan 1
30138571 Main Board 1
460200061 Pressure Switch 1
430004032 4-way Valve 1
33010010 Capacitor CBB61 3.5kuF/450V 1
76518732 Electric Heater 1

EXPLODED VIEW & SPARE PART LIST

15-12 Service Manual – VBZ DCI 1-A.1 GB

APPENDIX