product marketing sales training. course contents fundamentals of inverter air-conditioner system...

Sa

les

Tra

inin

gS

ale

s T

rain

ing

Inverter DX Inverter DX

Product MarketingProduct Marketing

Sales TrainingSales Training

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Course Contents

• Fundamentals of Inverter Air-Conditioner System

• OYL Inverter Product Range

• Service / Troubleshooting

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Fundamentals of Inverter A/C System

• Power supply (input) frequency is either 50 Hz

or 60 Hz.

• Inverters change the frequency (15 – 100 Hz) to the compressor according to load requirements.

Inverter Compressor operates at different speeds.

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Fundamentals of Inverter

AC = +/- voltage changes

U (V)

Vavg = 0

U (V)

t(s)

DC = no voltage changes

Vavg 0

t(s)

Sa

les

Tra

inin

gS

ale

s T

rain

ing



U (V)

t(s)

U (V)

t(s)

f = 50 Hz f = 70 Hz

Compressor Speed can be varied bychanging the Compressor Input

Frequency

Sa

les

Tra

inin

gS

ale

s T

rain

ing



IN: 240 VACf = 50 Hz

OUT: variable

f = variable

Rectifier(AC-DC)

Inverter (DC-AC)

PWM waveform

MCUSystem control

BrushlessMotor

Power supply220~240/1Ph/50Hz

O/D temp sensor

Current sensor

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Difference between AC & DC Inverter

• Motor efficiency

• Motor control method

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Motor Efficiency

ＤＣ Efficiency

ＡＣ Efficiency

AC total loss

Running loss

Exciting loss

１．００．５［ｋＷ］

［％］

Motor Output

９０

８０

７０

６０

５０Effi

cie

nc

y

DC total loss

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Motor control method

VDC Ascent

Comp. Load

N1 N2 N3

REVOLUTION

TO

RQ

UE

VAC Ascent

DC motor revolutionDepend on （ Vdc ）

AC motor revolutionDepend on freq. (FV curve) DC motor control method

　　・ PAM ： Vdc change　　・ PWM ： Vdc fix but duty change　　　　　　　（ AVG VDC change ）　　　　　　　　　　　　

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Advantages of Inverter System

• Room Temperature comfort

• Fast cooling / heating

• Less compressor ON / OFF cycle

• Low starting current (Soft start)

• Improvement in Low Temperature characteristic during Heating mode.

• Low energy consumption

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Room Temperature ComfortPrecise Room Temperature control

Less temperature fluctuation

0.5 deg Celsius from Set Temperature

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Fast Cooling / HeatingQuick ramp-up of compressor speed.

Enables A/C to reach set temperature faster.

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Less ON / OFF cycle

Time

Compressor capacity

Full capacity

Conventional compressor

ON OFF ON OFF ON OFF

• Once Set Temperature is reached, Inverter compressor still runs BUT at lower frequency.

• Conventional compressor will STOP.

• Therefore, ON/OFF strain for inverter compressor is less, making it lasts longer.

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Low Starting Current

• Inverter compressor start-up at lower frequency, then quickly ramps up.

• Starting current is lower.

Running current

Hours of operation

Conventional air conditioner:•High starting current•Frequent on/off cycle

Inverter air conditioner:•Low starting current•Smooth operation

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Improvement in Low Temperature Characteristics

• i) During low ambient temperature the inverter unit will run at max frequency which the capacity will improve compare with normal fix compressor unit

• ii) During defrost, the inverter unit will run at max frequency thus the defrost time will be less.

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Low Energy Consumption

Most FrequentlyUsed Area

Inverter

Sa

les

Tra

inin

gS

ale

s T

rain

ing


OYL Inverter Product Range

• Available for R22 (AC) and R410A (DC)

• Single – split & Multi-Split

• Wall-mounted, Ceiling Cassette, Ceiling Convertible, Ceiling Concealed.

Sa

les

Tra

inin

gS

ale

s T

rain

ing


OYL Inverter Product RangeIndoor Wall – Mounted

(5)WMX10/15/20/25G(R)

Sa

les

Tra

inin

gS

ale

s T

rain

ing


OYL Inverter Product RangeIndoor Ceiling Cassette

(5)CKX10/15/20C(R)

(5)CKX20/25A(R)

Sa

les

Tra

inin

gS

ale

s T

rain

ing


OYL Inverter Product RangeIndoor Ceiling Convertible

(5)CMX15/20/25E(R)

Sa

les

Tra

inin

gS

ale

s T

rain

ing


OYL Inverter Product RangeIndoor Ceiling Concealed

(5)CCX10/15/20/25C(R)

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Inverter Product Range• Outdoor Condensing C – Series (Single-split)

5SLX10/15/20/25C(R)

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Inverter Product Range• Outdoor Condensing A – Series R410A

(Multi-split DC Inverter)

5MSX20/25/30A(R)

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Inverter Product Range• Outdoor Condensing A – Series R22

(Multi-split AC Inverter)

MSV25/35A

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Inverter Product Range

5WMX10GR 5WMX15GR

5SLX10CR 5SLX15CRW 2,785 (812 - 3,272) 3,520 (812 - 4,430)

Btu/h 9,500 (2,772 - 11,165) 12,000 (2,772 - 15,114)W 3,370 (791 - 4,588) 3,810 (791 - 4,739)

Btu/h 11,500 (2,699 - 15,655) 13,000 (2,699 - 16,170)COOLING W 820 (242 - 1,038) 1,100 (242 - 1,559)HEATING W 930 (231 - 1,455) 1,057 (231 - 1,865)

W/W 3.40 3.20W/W 3.62 3.60

OUTDOOR UNIT

INDOOR UNIT

HEATING COPCOOLING EER

RATED COOLING CAPACITY (MIN - MAX)

RATED HEATING CAPACITY (MIN - MAX)

RATED POWER CONSUMPTION(MIN - MAX)

Specifications (Single – Split) R410A DC Inverter

Sa

les

Tra

inin

gS

ale

s T

rain

ing



5WMX20GR 5WMX25GR

5SLX20CR 5SLX25CRW 18,000 (5,000 - 20,000) 21,000 (5,000 - 23,000)

Btu/h 5,275 (1,465 - 5,862) 6,155 (1,465 - 6,741)W 19,000 (5,000 - 22,000) 22,000 (5,000 - 25,000)

Btu/h 5,568 (1,465 - 6,155) 6,448 (1,465 - 7,034)COOLING W 1632 1,991HEATING W 1631 2,013

W/W 3.23 3.09W/W 3.41 3.20

RATED COOLING CAPACITY (M IN - MAX)

RATED HEATING CAPACITY (M IN - MAX)

RATED POWER CONSUMPTION(MIN - MAX)

COOLING EER

OUTDOOR UNIT

INDOOR UNIT

HEATING COP

Specifications (Single – Split) R410A DC Inverter

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Inverter Product RangeSpecifications (Multi – Split) R410A DC Inverter

5MSX20A/AR 5MSX25A/AR 5MSX30A/AR

1 - to - 2 1 - to - 3 1 - to - 4

Btu/Hr 19000 (4500 - 21000) 22000 (4500 - 24000) 28000 (4500 - 30000)

W 5570 ( 1320 - 6150) 6450 ( 1320 - 7030) 8200 ( 1320 - 8790)

W 1500 (355 - 1870) 2014 (400 - 2285) 2564 (400 - 2860)

W / W 3.71 3.20 3.20

Btu/Hr 21000 (4500 - 23000) 24000 (4500 - 26000) 30000 (4500 - 32000)

W 6150 ( 1320 - 6740) 7030 ( 1320 - 7620) 8790 ( 1320 - 9380)

W 1630 ( 350 - 1950) 1954 ( 400 - 2476) 2443 ( 400 - 3050)

W / W 3.77 3.60 3.60

NOMINAL CAPACITY

RATED TOTAL POWER CONSUMPTION

RATED COP

NOMINAL CAPACITY

RATED TOTAL POWER CONSUMPTION

RATED EER

MODEL

Cooli

ngHe

ating

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Inverter Product RangeSpecifications (Multi – Split) R22 AC Inverter

OUTDOOR UNIT AMSV25A AMSV35ABtu/Hr 25,000 (6,000 - 28,000) 35,700 (8,000 - 38,000)

W 7,327 (1,758 - 8,206) 10,463 (2,344 - 11,137)W 2,851 (545 - 3,627) 3,750 (757 - 4,590)

W/W 2.57 2.79

COOLING ONLY MODEL

RATED EERRATED TOTAL POWER CONSUMPTION (M IN - MAX)

RATED COOLING CAPACITY (M IN - MAX)

Sa

les

Tra

inin

gS

ale

s T

rain

ing



Sa

les

Tra

inin

gS

ale

s T

rain

ing


Installation

• Wiring Installation

i) Additional signal wire (Low voltage LIVE)ii) Power supply : 3 wires

iii) Indoor to outdoor : 4 wires (including E)

vi) Earth wires must be connected for indoor and outdoor unit.

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Installation

• Wiring connection

INDOOR

OUTDOOR

1 – Comp

2 – Neutral

3 – Signal Power Supply

L

N Signal

Earth

1 2 3 N L

1 2 3

MCB / ELCB

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Protection AlgorithmsA) Current Control

I1

I2

Compressor stops

Frequency 1 step down

Frequency 1 step up

Total Current

Maintain Frequency

I3

Cooling Heat Pump Cooling Heat Pump Cooling Heat Pump Cooling Heat PumpI1 9.5 A 10.5 A 10.5 A 11.0 A 12.0 A 12.0 A 16.0 A 16.0 AI2 7.5 A 8.5 A 8.5 A 9.0 A 10.7 A 10.7 A 15.5 A 15.5 AI3 7.0 A 8.0 A 8.0 A 8.5 A 10.0 A 10.0 A 15.0 A 15.0 A

2.5 HP1 HP 1.5 HPTotal Current

2.0 HP

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Protection Algorithmsb) Compressor discharge temperature

Compressor Discharge Temperature

115°C

Compressor stops

Frequency 1 step down

Frequency 1 step up

Maintain Frequency

108°C

95°C

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Protection Algorithmsc) Starting control

Freq C

Freq 6

4 min1 min0

When target frequency > Freq 6,

– Freq 6 for one min.

When target frequency > Freq C

Freq 6 for one min and at Freq C for 1 min

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Protection Algorithmsc) Starting control

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Trouble-shooting

AIR – CONDITIONAL PROBLEMS

Insufficient Cooling/Heating

Refrigerant circuit problem

Starting or running failure

Electrical circuit problem

Sa

les

Tra

inin

gS

ale

s T

rain

ing


• Diagnoses by use of pressure gauge

Pressure measurement

Refrigerant charging

Vacuuming

• To troubleshoot the refrigerant circuit pressure gauge is one of the important tooling

• Both of the LP and HP must closed for pressure measurement

Trouble-shooting

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Insufficient coolingInsufficient Cooling

Unit Starts

High cooling load

Refrigerant circuit

Leakage

Restriction e.g at strainer, capillary, filter dryer, etc

Compressor

Less or no compression (Low running current)

Excessive heat source e.g. electric kettle

Room overcrowded with people

Windows/ doors wide open

Check air circulation

Indoor/Outdoor coil dirty (clogged)

Air filters dirty

Fan malfunction

Obstruction at air inlet/outlet of indoor/outdoor unit

Satisfactory operation with temperature difference of air intake & discharge of indoor unit 10ºC - 15ºC

Insufficient Cooling

Unit Starts

High cooling load

Refrigerant circuit

Leakage

Restriction e.g.. at strainer, capillary, filter dryer, etc

Compressor


Excessive heat source e.g. electric kettle

Room overcrowded with people




Air filters dirty

Fan malfunction



Sa

les

Tra

inin

gS

ale

s T

rain

ing


Insufficient HeatingInsufficient Cooling

Unit Starts

High cooling load

Refrigerant circuit

Leakage

Restriction e.g at strainer, capillary, filter dryer, etc

Compressor





Air filters dirty

Fan malfunction



Insufficient Heating

Unit Starts

High Heating load

Refrigerant circuit

Leakage

Restriction e.g.. at strainer, capillary, filter dryer, etc

Compressor





Air filters dirty

Fan malfunction



Sa

les

Tra

inin

gS

ale

s T

rain

ing


Pressure conditions

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Pressure table definition

Note: Outdoor air 35ºC DB

Indoor air 27ºC DB/ 19.5ºC WB

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Excessive refrigerant

CausesFor systems with EXV• Improper expansion valve adjustment.

• Poor installation of feeler bulb.

• Overcharged refrigerant.

For systems with capillary tube• Overcharged refrigerant

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Insufficient refrigerant2 types

– amount of refrigerant in the system is not enough.

– amount of refrigerant passing through expansion device is not enough

Possible causes

– undercharge refrigerant

– refrigerant leak

– choked filter, drier

– faulty expansion device

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Excessive condensing pressure

Possible causes

– air flow short circuit

– insufficient air flow

– partially blocked condenser

– presence of air or non-condensable gases in the system.

– operation beyond upper ambient temperature limits

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Electrical circuit trouble-shooting

Electrical circuit problem

– Key components functioning checking

– Controller for different models

– Troubleshooting steps for the inverter controller

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Required Tools

• Clamp meter

AC CURRENT

DC CURRENT

FREQ

RESISTANCE

VDC

VAC

LIGHT

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Required Tools

• Multi-meter

AC CURRENT

DC CURRENT

RESISTANTVDC

VAC

CONTINUITY

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Key Components - Capacitor

Functions

To smoothen the DC bus for the inverter board

Testing

Use multi-meter to check the conductivity of the terminal

Terminal

Problems

I) Caused by over voltage

II) Electrolyte dried up causing it malfunction

III)High ambient working condition

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Key Components – Bridge Diode

+

~

~

-

Function

To rectifier the AC source to DC source

Testing

Use multi-meter to check the conductivity

of the terminal. Normally, 0.4V – 0.6V or 240-250KΩ

Problems

I) Caused by over voltage

II) Working ambient to high

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Key Components - Reactor

Function

Introduce at the inverter circuit to compensate

for reactive power and improve power factor

Testing

I) Resistance should be around 0.4Ohm

II) If the conductivity is open loop mean the reactor failure

III)Coil/steel plate and external bracket resistance should infinite

IV)No obvious burn marks

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Key Components - PTC

Function

Due to high capacitor charge current

during start up, the PTC electronic starter

and relay combination acts to cushion the

excessive charge current

Testing

Resistance of the PTC on sheet metal at

ambient temp is 40±20% Ohm

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Key Components - Sensors

• SensorI) Sensor as an ADC input value for the controller

II) The Longertech sensor value (yellow socket) is different with the OYL inverter sensor

III) Sensor value for the sensor can be measured using multi-meter in 2 form. Resistance value (no PCB running) or Vdc value

IV) For Vdc value checking, the value get from multi-meter need to minus by 5Vdc before refer to the table

V) For resistance value checking, the value can refer directly

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Sensor values

25ºC 5.2860kOhm 2.3533Vdc

25ºC 57.9400KOhm 1.2830Vdc

Longertech sensor value

25ºC 10.00kOhm 1.45Vdc

OYL sensor value

Example: Measured from multi-meter is 3.27KOhm.

5.00KOhm - 3.27KOhm = 1.728KOhm

From the table, 1.728KOhm convert back to 35ºC

Discharge Sensor

Room/ coil Sensor

All the value same for discharge, room

and coil

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Control board – 5SLX10/15C

BRIDGE DIOD

E - CAPACITOR

REACTOR

TERMINAL BLOCK

IPM

POWER BOARD

MCU

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Control board – 5SLX20/25C

IPMCU

REACTOR

POWER BOARD

E - CAPACITOR

TERMINAL BLOCK

BRIDGE DIOD

Sa

les

Tra

inin

gS

ale

s T

rain

ing


POWER BOARD

TERMINAL BLOCK

BRIDGE DIOD

E - CAPACITOR

FAN CAPACITOR

IPM

PFC CAPACITOR

Control board – MSV25A

Sa

les

Tra

inin

gS

ale

s T

rain

ing


POWER BOARD

E - CAPACITOR

IPM

BRIDGE DIOD

FAN CAPACITOR

TERMINAL BLOCK

PTCCONTACTOR

FUSE

PFC CAPACITOR

Control board – MSV35A

Sa

les

Tra

inin

gS

ale

s T

rain

ing


TERMINAL BLOCK

POWER BOARD

CAPACITOR

FAN CAPACITOR

REACTOR

PFC

IPM

Control board – 5MSX20/25/30A

Sa

les

Tra

inin

gS

ale

s T

rain

ing


• Indoor Error Codes- I/D LED Blinking

• Outdoor Error Codes- Compressor Running LED Blinking

- Compressor Stopped LED Blinking

Error Codes

Sa

les

Tra

inin

gS

ale

s T

rain

ing


LED

Fault Indications Troubleshooting Methods

1 2 3 4

Defrost Operation (Red) Ignore

I/D Sensor Error (Yellow) Check I/D Sensor wire and value (~5kΩ)

Coil Temp. Sensor Error Check Coil Sensor wire and value (~5kΩ)

O/D Temp. Sensor Error Refer O/D Unit

Compressor Overload Refer O/D Unit

IPM Error Refer O/D Unit

O/D Current Trip Refer O/D Unit

Compressor Overheat / Gas Leak Refer O/D Unit

I/D Fan Feedback Error Check I/D Fan Wire

Communication Error Check Wiring

Error Codes – (5)WMX-G

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Blinks Blinking Indication

1 Normal Running, with no limitation

2 Voltage Limit

3 Cooling unit : Outdoor Coil Temperature LimitHeating unit : Indoor Coil Temperature Limit

4 Total Current Limit

5 Discharge Temperature Limit

6 Cooling unit : Indoor Coil Temperature Limit

7 Indoor Fan Control

8 Outdoor Frequency Adjustment

Error Codes – Outdoor

Compressor Running LED Blinking

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Compressor Stopped LED Blinking

Blink Fault Indications Troubleshooting Methods

1 O/D Ambient Sensor Error Check O/D Ambient Sensor Wire & Connection

2 O/D Coil Sensor Error Check O/D Coil Sensor Wire & Connection

3 O/D Disc. Sensor Error /

Comp. Overheat

Check O/D Disc Sensor Wire & Connection;

Check Pressure & Compressor

4 DC Comp. Feedback Error Check Comp. Wire & Feedback Wire

(Not applicable for A/C Inverter)

5 Communication Error Check Communication Wire & Connection

for both I/D & O/D

6 Over Current Error Check Total Current; Check Pressure & Compressor

7 No Load Not Applicable

8 Over / Under Voltage Check Power Supply

9 DC Comp. Start Failure Check Comp. Wire & Feedback Wire; Check Compressor


Sa

les

Tra

inin

gS

ale

s T

rain

ing




10 Cooling Overload Check Pressure

11 Defrost Ignore

12 IPM Protection Check Power Supply;

Check Main Board / Filter Board;

Check Bridge Diode;

Check IPM Board;

Check Compressor

13 Read EEPROM Error Check EEPROM Chip Connection

14 Write EEPROM Error Check EEPROM Chip Connection

15 DC Fan Motor Feedback Error Ignore

16 AC Peak Current Error Ignore

17 O/D Suction Sensor Error Check O/D Suction Sensor Wire & Connection

(Applicable only for Heat Pump Unit)


Sa

les

Tra

inin

gS

ale

s T

rain

ing




18 None Ignore

19 DC Comp. Speed Control Error Check IPM Board; Check Compressor;

20 None Ignore

21 O/D Suction Pipe A Sensor Error Check Suction Pipe A Sensor Wire & Connection

22 O/D Suction Pipe B Sensor Error Check Suction Pipe B Sensor Wire & Connection

23 O/D Suction Pipe C Sensor Error Check Suction Pipe C Sensor Wire & Connection

24 O/D Suction Pipe D Sensor Error Check Suction Pipe D Sensor Wire & Connection

31 Communication Error with I/D A Check Communication Wire & Connection with I/D A

32 Communication Error with I/D B Check Communication Wire & Connection with I/D B

33 Communication Error with I/D C Check Communication Wire & Connection with I/D C

34 Communication Error with I/D D Check Communication Wire & Connection with I/D D


Sa

les

Tra

inin

gS

ale

s T

rain

ing


L N

E

Multi split inverter

Single split inverter

Use multi-meter to check the power supply to the controller

Single split refer 1 & 2 and multi split refer L & N

Supply around 220 ~ 240VAC

Power supply checking

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Use multi-meter to check the continuity of the fuse

Fuse with sound ‘BEEP’ is ok

Fuse with OL for the resistance and no ‘BEEP’ is nok

Fuse checking

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Use multi meter to check the communication line between indoor and outdoor

Signal (3) line references to neutral (2). Check VDC for signal and neutral

The VDC will fluctuate to show the communication transmit between indoor and outdoor

Communication wires checking

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Bridge Diode AC Voltage Checking

Use multi-meter to check the AC voltage across the bridge diode

Supply around 220 ~ 240VAC

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Electrolytic Capacitor Checking

Use multi-meter to check the DC voltage across the E-CAP

In normal case the value should around 270-330Vdc

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Bridge Diode Continuity Checking

+

~

~

-

(Diode ~ 0.4 – 0.6V)

Use multi-meter to check the continuity of the bridge diode

The value must around 0.4 – 0.6V or 240-250kΩ

The bridge diode with ‘BEEP’ sound is nok

5SLX 10/15CR & MSV 25/35A (LONGERTECH)

Sa

les

Tra

inin

gS

ale

s T

rain

ing



+

Result show in kΩ

+

• Multi-meter will show value in one direction and OL in another direction when we change the multi-meter direction.

• If both direction show value means the bridge diode already short

OKOK

Sa

les

Tra

inin

gS

ale

s T

rain

ing


+ +

OK OK

+ +

OK NG

If both direction show value means the bridge diode already short


Sa

les

Tra

inin

gS

ale

s T

rain

ing


+ +

Result show in Vdc

• Same with the result show in kΩ, multi-meter will show value in one direction and OL in another direction when we change the multi-meter direction.


Bridge Diode Vdc value checking

Sa

les

Tra

inin

gS

ale

s T

rain

ing


NG NG

+

+

• Same with the result show in kΩ, multi-meter will show value in one direction and OL in another direction when we change the multi-meter direction.



Sa

les

Tra

inin

gS

ale

s T

rain

ing


5SLX 10CR/15CR (OYL)

5SLX 20/25CR & 5MSX 20/25/30AR

Use multi-meter to check the connectivity of the bridge diode

The bridge diode with ‘BEEP’ sound is nok

Value 380-400Ω is OK

Value 190-220KΩ is OK


Sa

les

Tra

inin

gS

ale

s T

rain

ing


PFC BOARD FOR 5SLX 20/25CR & 5MSX 20/25/30AR

IGBT

DIODEPlease check the IGBT and DIODE with multimeter

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Using multimeter with continuity function.

1)Multimeter show OL means ok

2) If Multimeter show value around 0Ohm ~ to few Ohm and with the “BEEP” sound means diode short already and the PFC need to be change

Sa

les

Tra

inin

gS

ale

s T

rain

ing


1)Multimeter show OL means ok

2) If Multimeter show value around 0Ohm ~ to few Ohm and with the “BEEP” sound means IGBT short already and the PFC need to be change

Using multimeter with continuity function.

Sa

les

Tra

inin

gS

ale

s T

rain

ing


IPM DC Voltage Across Checking

Use multi-meter to check the DC voltage across the IPM

The value should around 270 – 330VDC depends on the PFC it used

Sa

les

Tra

inin

gS

ale

s T

rain

ing


+ - U V W

+ & - from the DC bus

U, V, W to compressor

Intelligent Power Module (IPM)

Sa

les

Tra

inin

gS

ale

s T

rain

ing


+ - -+

OK OK

+ - -+

NOK NOK

If both direction show value means the bridge diode already short

Sa

les

Tra

inin

gS

ale

s T

rain

ing


• Compressor connectivity checking between the terminal

Use multi-meter to check the connectivity between the terminal

The multi - meter should have “BEEP” sound to show the winding short

If the multi-meter show OL means the winding of compressor burn or short

Compressor connectivity checking between the terminal

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Compressor connectivity checking

Use multi-meter to check the connectivity between the body and terminal

The multi-meter should show OL

If the ‘BEEP’ sound shown means the compressor short

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Diagnostic Tool

Interceptor

– For Inverters• Including AC and DC Inverters

• Single-Splits & Multi-Splits

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Interceptor

Capability

–Intercepts or captures communication signals within the inverter electronics nervous system.

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Hardware Installation Schematic

Single-split

Multi-split

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Features • Displays Operating Parameters

–Temperature Readings for ALL sensors• Outdoor Air Temperature

• Outdoor Coil Temperature

• Indoor Air Temperature

• Indoor Coil Temperature

• Indoor Set Temperature

• Compressor Discharge Temperature

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Display Operating Parameters

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Features

• Compressor

– Running Frequency

• EXV

– Number of Pulses

– Status

• Operating Mode for both Indoor and Outdoor

• Indoor Fan Speed

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Features

• Data Logging

• Data Storage & Transmission

• Graphical Representation

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Data Logging

• “Set-and-Forget” –Once program is started properly, data is

collected automatically.

–There is no need for constant human monitoring.

–Monitoring period is limited only by free hard disk space.

–BUT ensure constant power supply during the entire monitoring period.

–Power-Saving Features must be Disabled.

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Data Storage & Transmission

• Data Storage–Data is stored as .ice files in the computer.

–Useful for future reference.

• Data Transmission–.ice files can be transmitted by email back to

OYL for further analysis.

–All parameters can be converted and manipulated using 4 different formats.• Text

• XML

• HTML table

• Excel

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Graphical representation

• All parameters can be shown in graph form (time-based) for easier understanding.

• Graph can be customized e.g. Titles, Colours, Types of Axis, etc.

• Ability to export to–Metafile

–Bitmap

–JPG

–GIF

–PCX

• One-Click to Send by Email

• Useful to generate Service Reports

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Graphical representation

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Interceptor sales package

• CD-ROM containing

–Interceptor Installation Program

–Hardware Installation Manual

–Software Manual

–Extras (required for full functionality)• Adobe Acrobat Reader 6.0

• Internet Explorer 6.0 SP1

• Microsoft DotNet Framework

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Interceptor sales package

• Interceptor Module

• RS232 Serial Connection Cable

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Computer requiremets

• Notebook or Desktop Computer with built-in RS232 Serial Port

• Microsoft Windows XP Professional

• Minimum 128 MB RAM

• Minimum 50MB of Hard Disk Space

Sa

les

Tra

inin

gS

ale

s T

rain

ing


Thank you

product marketing sales training. course contents fundamentals of inverter air-conditioner system...

Documents