Tadiran Telecom Swift Inverter 9U, Swift Inverter 24U, Swift Inverter Series, Swift Inverter 36U, Swift Inverter 12U Service Manual

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Swift Inverter

Split-Type Air Conditioner

CONTENTS

Part I : Technical Information ............................................................................. 1

1. Summary ............................................................................................................ 1

1-1 Appearance .........................................................................................................................1

1-2 Model List ............................................................................................................................3

2. Outline Dimension Diagram ................................................................................ 3

3. Specification sheet ............................................................................................... 5

4. Function and Control ........................................................................................ 10

4-1 H-Style .............................................................................................................................. 10

4-2 L-Style ............................................................................................................................... 14

5. Refrigerant System Diagram ............................................................................. 21

5-1 Cooling Only...................................................................................................................... 21

5-2 Cooling & Heating............................................................................................................. 22

6. Electrical Part ................................................................................................... 24

6-1 Wiring Diagram ................................................................................................................. 24

6-2 PCB Printed Diagram ........................................................................................................ 26

Part II : Installation and Maintenance ............................................................... 27

7. Main Tools for Installation and Maintenance...................................................... 27

8. Installation........................................................................................................ 28

8-1 Notes for Installation ........................................................................................................ 28

8-2 Installation of Indoor Unit ................................................................................................. 29

8-3 Installation of outdoor Unit ............................................................................................... 32

8-4 Check after installation and test operation ...................................................................... 35

9. Maintenance ..................................................................................................... 37

9-1 Troubleshooting Guide ..................................................................................................... 37

9-2 Common Parameters ....................................................................................................... 59

9-3 Troubleshooting for Normal Malfunction .......................................................................... 61

10. Removal Procedure ......................................................................................... 69

10-1 Indoor Unit ..................................................................................................................... 69

10-2 Outdoor Unit ................................................................................................................... 83

11. Exploded Views and Parts List ......................................................................... 89

11-1 Indoor Unit ..................................................................................................................... 89

11-2 Outdoor Unit ....................................................................................................................97

Appendix ............................................................................................................ 103

Common Sensor R-T Analysis Table ............................................................................... 103

Part I : Technical Information

1. Summary

1-1 Appearance

 Indoor Unit

 Outdoor Unit

12K

18K

24K

36K

Note: The outdoor grille can be replaced.

1-2 Model List

NO.

MODEL

NO.

MODEL

Cooling

capacity

Boundary Dimension

W×H×D (mm)

Package Size

W×H×D (mm)

800×300×198

850*370*270

850×300×198

900×370×270

970×315×235

1025*385*305

1100×330×235

1180×400×317

1250×360×253

1340*445*355

Platform

Boundary Dimension

W1(W2)×H×D(mm)

Base footing center size

A×B(mm)

Package Size

W×H×D(mm)

730(780)×545×285

540×280

850×620×370

800(860)×545×315

545×315

920×620×400

900(950)×700×350

630×350

1020×770×430

Swift Inverter 9U 2 Swift Inverter 12U Swift Inverter 18U 4 Swift Inverter 24U

Swift Inverter 36U

2. Outline Dimension Diagram

The following data is for reference only and the actual size may vary.

 Indoor Unit

9000BTU

12000BTU

18000BTU

24000BTU

36000BTU

 Outdoor Unit

12K

18/24/36K

Note:

1. The main body size of the front shape after normal installation: width × height × depth (mm). An example of the dimension measurement is shown in the figure.

a) Width direction: Width 1: Not include the size of the stop valve. Width 2: Include the size of the stop valve. b) Height direction: including the height of the mounting foot; c) Depth direction: not include the size of mounting foot but include the size of the large-area parts such as panel grille

2. Base footing center size A × B.

3. Specification sheet

Product Model

Nameplate Parameter

Rated Capacity Cooling

2650

Heating

2650

Dehumidifying

Kg/h

Rated Power Consumption Cooling

660

Heating

670

Rated Running Current Cooling

3.2

Heating

3.3

Electric heating power

W / Max. Input Power

1540

Max. Input Current

A 7 EER Cooling

W/W

SEER23

COP Heating

W/W

SCOP10

Power supply source

V/Ph/Hz

208～230V-1-60Hz

Refrigerant

R410A

Refrigerant Charged

1000

Max. Discharge Pressure

Mpa

4.15

Max. Suction Pressure

Mpa

1.15

Air Flow Volume

m3/h

650

Noise level

dB（A)

Noise level

dB（A)

Indoor unit weight （Net )

Outdoor unit weight (Net )

Indoor unit configuration evaporator

Tube Length

602

Diameter

Fan system

Fan motor

Model

Pcs

D-310-13-8C

Dimension Net Dimension(W*D*H)

800×300×198

Packing Dimension(W*D*H)

850*370*270

Connection

Stop Valve Liquid Valve

Dg4

Gas Valve

Dg8

Outdoor unit configuration

Compressor Model

ASD102RKQA6JT6

Compressor

Brand

HIGHLY

Fan system

Fan motor

Model

D-24-8

Condenser

Tube Length

702

Diameter

Dimension Net Dimension (W*D*H)

730×545×285

Packing Dimension (W*D*H)

850*370*620

Container Loading 20/40/40HC

Set

250

Operation temp. range-Cooling

℃

16~52

Operation temp. range-Heating

℃

-15~30

Swift Inverter 9U

Product Model

Swift Inverter 12U

Nameplate Parameter

Rated Capacity Cooling

3500

Heating

3600

Dehumidifying

Kg/h

Rated Power Consumption Cooling

970

Heating

1025

Rated Running Current Cooling

4.8

Heating

5.0

Electric heating power

W / Max. Input Power

1650

Max. Input Current

7.5

EER Cooling

W/W

SEER22

COP Heating

W/W

SCOP10

Power supply source

V/Ph/Hz

208～230V-1-60Hz

Refrigerant

R410A

Refrigerant Charged

1150

Max. Discharge Pressure

Mpa

4.15

Max. Suction Pressure

Mpa

1.15

Air Flow Volume

m3/h

700

Noise level

dB（A)

Noise level

dB（A)

Indoor unit weight （Net )

Outdoor unit weight (Net )

Indoor unit configuration evaporator

Tube Length

652

Diameter

Fan system

Fan motor

Model

Pcs

D-310-13-8C

Dimension Net Dimension(W*D*H)

850×300×198

Packing Dimension(W*D*H)

900×370×270

Connection

Stop Valve Liquid Valve

Dg4

Gas Valve

Dg8

Outdoor unit configuration

Compressor Model

ASN108D32UFZ

Compressor Parameter

Brand

GMCC Fan system

Fan motor

Model

D-40-8

Condenser

Tube Length

860

Diameter

Dimension Net Dimension (W*D*H)

800×545×315

Packing Dimension (W*D*H)

920×400×620

Container Loading 20/40/40HC

Set

210

Operation temp. range-Cooling

℃

16~52

Operation temp. range-Heating

℃

-15~30

Product Model

Swift Inverter 18U

Nameplate Parameter

Rated Capacity Cooling

5300

Heating

5300

Dehumidifying

Kg/h

Rated Power Consumption Cooling

1395

Heating

1370

Rated Running Current Cooling

6.8

Heating

6.7

Electric heating power

W / Max. Input Power

1900

Max. Input Current

A 9 EER Cooling

W/W

SEER21

COP Heating

W/W

SCOP10

Power supply source

V/Ph/Hz

208～230V-1-60Hz

Refrigerant

R410A

Refrigerant Charged

1600

Max. Discharge Pressure

Mpa

4.15

Max. Suction Pressure

Mpa

1.15

Air Flow Volume

m3/h

1100

Noise level

dB（A)

Noise level

dB（A)

Indoor unit weight （Net )

Outdoor unit weight (Net )

Indoor unit configuration evaporator

Tube Length

722

Diameter

Fan system

Fan motor

Model

Pcs

D-310-30-8

Dimension

Net Dimension(W*D*H)

970×315×235

Packing Dimension(W*D*H)

1025*385*305

Connection

Stop Valve Liquid Valve

Dg4

Gas Valve

Dg13

Outdoor unit configuration

Compressor Model

ATD141RDPA8JTA

Compressor Parameter

Brand

HIGHLY Fan system

Fan motor

Model

D-69-8

Condenser

Tube Length

886

Diameter

Dimension Net Dimension (W*D*H)

900×350×700

Packing Dimension (W*D*H)

1020*430*770

Container Loading 20/40/40HC

Set

148

Operation temp. range-Cooling

℃

16~52

Operation temp. range-Heating

℃

-15~30

Product Model

Swift Inverter 24U

Nameplate Parameter

Rated Capacity Cooling

7000

Heating

7050

Dehumidifying

Kg/h

Rated Power Consumption Cooling

1800

Heating

1950

Rated Running Current Cooling

9.77

Heating

10.55

Electric heating power

W / Max. Input Power

3200

Max. Input Current

EER Cooling

W/W

SEER20

COP Heating

W/W

SCOP11

Power supply source

V/Ph/Hz

208～230V-1-60Hz

Refrigerant

R410A

Refrigerant Charged

1620

Max. Discharge Pressure

Mpa

4.15

Max. Suction Pressure

Mpa

1.15

Air Flow Volume

m3/h

1380

Noise level

dB（A)

Noise level

dB（A)

Indoor unit weight （Net )

Outdoor unit weight (Net )

Indoor unit configuration evaporator

Tube Length

850

Diameter

Fan system

Fan motor

Model

Pcs

D-310-50-8A

Dimension

Net Dimension(W*D*H)

1100×330×235

Packing Dimension(W*D*H)

1180×400×317

Connection

Stop Valve Liquid Valve

Dg4

Gas Valve

Dg13

Outdoor unit configuration

Compressor Model

ATD186UKPA9LT6

Compressor Parameter

Brand

HIGHLY Fan system

Fan motor

Model

D-69-8

Condenser

Tube Length

886

Diameter

Dimension Net Dimension (W*D*H)

900×350×700

Packing Dimension (W*D*H)

1020*430*770

Container Loading 20/40/40HC

Set

138

Operation temp. range-Cooling

℃

16~52

Operation temp. range-Heating

℃

-15~30

Product Model

Swift Inverter 36U

Nameplate Parameter

Rated Capacity Cooling

10500

Heating

10550

Dehumidifying

Kg/h

Rated Power Consumption Cooling

3990

Heating

3640

Rated Running Current Cooling

Heating

Electric heating power

W / Max. Input Power

4750

Max. Input Current

EER Cooling

W/W

SEER 16.5

COP Heating

W/W

SCOP 8.2

Power supply source

V/Ph/Hz

208～230V-1-60Hz

Refrigerant

R410A

Refrigerant Charged

2500

Max. Discharge Pressure

Mpa

4.15

Max. Suction Pressure

Mpa

1.15

Air Flow Volume

m3/h

1600

Noise level

dB（A)

Noise level

dB（A)

Indoor unit weight （Net )

Outdoor unit weight (Net )

Indoor unit configuration evaporator

Tube Length

987

Diameter

Fan system

Fan motor

Model

Pcs

D-310-50-8A

Dimension

Net Dimension(W*D*H)

1250×360×253

Packing Dimension(W*D*H)

1340*445*355

Connection

Stop Valve Liquid Valve

Dg8

Gas Valve

Dg13

Outdoor unit configuration

Compressor Model

KTF310D43UMP

Compressor Parameter

Brand

GMCC Fan system

Fan motor

Model

D-69-8

Condenser

Tube Length

868

Diameter

Dimension Net Dimension (W*D*H)

900×350×700

Packing Dimension (W*D*H)

1020*430*770

Container Loading 20/40/40HC

Set

125

Operation temp. range-Cooling

℃

16~52

Operation temp. range-Heating

℃

-15~30

4. Function and Control

Note

All the figures above are the

displays after being initially

electrified or re-electrified after power off. In actual operations, the remote controller screen displays related items only. Some functions are optional

and don’t work according to

4-1 A-Style

1) Remote Controller Introduction

 Introduction for Buttons on Remote Controller

：

the model.

1. ON/OFF

* Press this button to turn on/off the unit. * This will clear the existing timer and SLEEP settings.

2.℃/℉

* Press this button to set the temperature display to Fahrenheit, which is displayed by default in Celsius. The “℃” will not be displayed on the LCD. * Press this button again to restore the temperature display to Celsius.

Note: Temperature display in Fahrenheit is not available for some models. When temperature is displayed in Fahrenheit on the remote controller, it might be in Celsius on the unit, the function and operation of which will not be affected.

3. SPEED

* Press this button, you can select the fan speed as follows:

Note: AUTO air speed is not available in FAN mode.

4. DISPLAY

* Press this button to turn on/off the display. This is for the convenience of users who are unconformable sleeping with the backlight on.

5. iFEEL

* Press this button to set the temperature display on the remote controller to ambient temperature and press this button again to set it to preset temperature.

6. TIMER

* With the unit ON, press this button to set OFF timer or with it OFF to set ON timer.

Low → Mid → High → Auto

* Press this button once, a "ON(OFF)" will flash. Press “▲”or “ ▼” to set the number

of hours in which the unit will be turned ON/OFF, with an interval of 0.5 hour if less than 10 hours, or 1 hour if longer than 10 hours and a range of 0.5-24 hours. * Press it again to confirm the setting the "ON (OFF)" will stop flashing. * If the timer button is not pressed longer than 10 seconds after the "ON (OFF)" start flashing, the timer setting will be exited. * If a timer setting is confirmed, pressing this button again will cancel it. Note: When a ON timer is set, all function buttons (except SLEEP DISPLAY and iFEEL can't be set ) are valid and when the ON time set is up, the unit will operate as preset.

7. This button has two functions.

a. HEALTH * Press this button with the unit ON to activate health related functions, such as negative ion, electrostatic precipitation, PM2.5 removal, etc, depending on the actual configuration of each model. * Press this button again to deactivate the HEALTH function. b. iCLEAN * Press this button with the unit OFF, the remote controller will display "CL" and the unit will automatically clean dust off the evaporator and dry it, to increase the cooling and heating efficiency. * The iCLEAN function runs for approximately 30 minutes, during which if the unit is turned on with the remote controller or this button is pressed again, the iCLEAN will be deactivated.

8. ▲ or ▼

* Each time the "▲" is pressed, the temperature setting will increase by 1℃ and each time the "▼" is pressed, it will decrease by 1℃. * a. lf the type of controller remote is YKR-H/101E or YKR-H/102E setting temperature range is 16℃ ~32℃(60℉~90℉). b. lf the type of controller remote is YKR-H/132E setting temperature range is 20℃ ~28℃ (68℉~82℉). c. Some area don't have the YKR-H/132E.Local regulation and actual object shall

prevail. Note: The temperature cannot be set in AUTO or FAN mode, thus these two buttons are not functional.

9. TURBO

* Press this button only in COOL or HEAT mode to set TURBO on or off to speedy the cooling or heating. * When TURBO is on the air speed is HIGH. * When TURBO is off the air speed will restore to previous status.

10. MODE

* Press this button you can select the running mode as follows:

AUTO → COOL → DRY → HEAT →FAN

Note: HEAT mode is not available for cool only units.

11. SLEEP

* Press this button to enter SLEEP mode, which the unit will exit after 10 hours of continuous operation and restore to the previous status. Note: The SLEEP function cannot be activated in FAN mode.

12. SWING

* Press this button to activate up/down swing and press it again to fix the swing position.

13. SWING

* Press this button to activate left/right swing and press it again to fix the swing position.

14. Anti-F

* The Anti-F functions when the unit is turned off with the remote controller in COOL, DRY or AUTO mode. It will operate in HEAT mode (FAN mode for cool only units), with the internal fan running with weak flow for 3 minute before stop, to remove the moisture within the evaporator so as to prevent it from giving bad smell from mold. * This function is not set in the factory. You may set it or cancel it any time you want as follows: With both the unit and the remote controller OFF, point the remote controller at the unit and press "Anti-F" button once, the buzzer will sound 5 times after 5 times, indicating this function is set. Once set, this function will remain valid except when the unit is power off or until it is canceled. * To cancel Anti-F:

1. Power off the unit.

2. With both the unit and the remote controller OFF, point the remote controller at the unit and press this button once, the buzzer will sound 3 times after 5 times, indicating this function is canceled. Note: * With Anti-F activated, it is advised not to turn ON the unit again before it is fully OFF. *Anti-F function will be invalid when OFF timer is set.

15.This button has two functions.

a. ELE.H (Optional) * If this button is pressed in HEAT mode, the electric heating will be turned on/off. b. ECO (Optional) * If this button is pressed in COOL mode, the unit will enter the ECO mode which has the lowest electricity consumption, and exit it automatically 8 hours after. * Changing modes or turning off the remote controller will automatically cancel the ECO function. * Press ECO button in ECO mode to exit this mode. Note: The ECO mode only works for inverter units.

2) Introduction for mode settings

★Automatic operation mode

1. Press the "MODE" button, select the automatic operation mode.

2. By pressing the "SPEED" button, you can select the fan speed from LOW, MID, HIGH, AUTO.

3. Press the "ON/OFF" button, the air-conditioner starts to operate.

4. Press the "ON/OFF" button again, the air-conditioner stops. Note: In the fan operation mode the temperature settings is non-effective.

★Cooling/Heating operation mode

1. Press the "MODE" button, select the Cooling or Heating operation mode.

2. By pressing the "▲"or "▼"button, you can set the temperature the display changes

as you touch the button.

3. By pressing the "SPEED" button, you can select the fan speed from LOW, MID, HIGH, AUTO.

4. Press the "ON/OFF" button, the air-conditioner starts to operate.

5. Press the "ON/OFF" button again, the air-conditioner stops. Note: The cold wind type has no heating function.

★Fan operation mode

1. Press the "MODE" button, select the fan operation mode.

2. By pressing the "SPEED" button, you can select the fan speed from LOW, MID, HIGH.

3. Press the "ON/OFF" button, the air-conditioner starts to operate.

4. Press the "ON/OFF" button again, the air-conditioner stops. Note: In the fan operation mode the temperature settings is non-effective.

★Drying operation mode

1. Press the "MODE" button, select the drying operation mode.

2. By pressing the "▲"or "▼"button, you can set the temperature the display changes as you touch the button.

3. By pressing the "SPEED" button, you can select the fan speed from LOW, MID, HIGH, AUTO.

4. Press the "ON/OFF" button, the air-conditioner starts to operate.

5. Press the "ON/OFF" button again, the air-conditioner stops.

★Backlight function (for remote controllers with such function only)

The remote controller has a backlight which can be turned on by pressing any button for the convenience of operation in darkness. The backlight will be automatically turned off if there is no operation within 10 seconds.

3) Precautions

• Before first time use of the remote controller install the batteries and ensure the

"+"and "_" poles are correctly positioned.

• Ensure the remote controller is pointed to the signal receiving Window and that there is no obstruction in between and the distance is 8m at the maximum.

• Do not let the remote controller drop or fling it at will.

Do not let any liquid in the remote controller. Do not expose the remote controller directly to the sunlight or excessive heat.

• If the remote controller does not function normally remove the batteries for 30

second before reinstall them. If that doesn't work replace the batteries.

• When replacing the batteries do not mix the new batteries with old ones or mix batteries of different types which could cause failure of the remote controller.

• If the remote controller is not to be used for a long period of time remove the

batteries first lest the leakage from them may damage the remote controller.

• Properly dispose the discarded batteries.

Note:

1. This is a universal remote controller which provide all the function buttons. Please understand that some of the buttons may not function, depending on the specific air conditioner you have purchased. (If a specific function is not available on the air conditioner, pressing the corresponding button will simply have no respond.)

2. HEAT and ELE.H functions are not available for cool only models, thus these two

buttons do not work correspondingly.

 Battery use and replacement

1. Slide to open the cover according to the direction indicated by the arrowhead.

2. Insert two brand new batteries (7#) and position the batteries to the right electric poles (+ & -).

3. Put back the cover.

4-2 B-Style

1) Remote Controller Introduction

● Read this “instructions” carefully so that you can use the air-conditioner safely and correctly.

● Take good care of the “instructions” so that it can be referred to at any time.

Note : remote controller outside buttons only valid when surface cover is closed.

①“ON/OFF”button

* Press this button,the unit will be started or stopped, which can clear the timer or sleeping function of last time.

②“SPEED”button

* Press this button, speed will change as below:

③“ ”or “ ”button

*When press “ ”button, the setting temperature will be increased by 0.5℃. When press “ ”button, the setting temperature will be decreased by 0.5℃ * The temperature will be changed quickly by pressing the button continuously and setting temperature range is 16℃to 32℃.

④“COOL”button

* Press the COOL button, the mode of operation is shifted into cooling.

⑤“HEAT”button

* Press the HEAT button, the mode of operation is shifted into heating. * Note: cooling only unit has no heating function.

⑥“SWING”button（SWING and SWING ）

* Press this button to open up/down(left/right) swing function, press it again, fix louver position. * Up/down(left/right) setting is only valid in this mode, it will not affect louver position in other modes. * Up/down(left/right) swing has memory function, it can keep primary setting when turn off then turn on or switch from other modes to primary mode.

NOTE:

This manual introduces function for all of the remote control, maybe you press one button without any reaction, well, the air-conditioner you bought hasn't this function.

1.“ON/OFF”button

* Press this button, the unit will be started or stopped, which can clear the timer or

sleeping function of last time.

2.“MODE”button

* Press this button, the running mode will change as below: AUTO→COOL→DRY→HEAT→FAN * Note: cooling only unit has no heating function.

3. “SPEED”button

* Press this button,speed will change as below:

4. “TURBO”button

* Set turbo on or off(the characters of turbo will appear or disappear)by pressing this key under cooling or heating mode. * Once energized, the unit will be defaulted to be turbo off. * This function can not be set under auto, dry or fan mode, and characters of turbo won’t appear.

5. “SILENCE” button

* Set silence on or off(the characters of silence will appear or disappear)by pressing this key. * Once energized, the unit will be defaulted to be silence off.

6. “TIMER”button

* On the status of the unit on, press this button to set timer off. On the status of the unit off, press this button to set timer on. * Press this key once, words H on (off) will appear and flicker. In which case, press

button to adjust time (press “ / ” button to adjust time (press / value quickly), the setting time range is from 0.5 to 24 hr. ; press this key once again to fix

the time, then remote controller will send out the signal immediately and H on/off will stop flickering. * If the time of that no press timer button under flickering status is above 10s, the timer setting will quit. * If the timer has been set, press this button once again to quit it.

7.“HEALTH” button

* Press this button, you can turn on or off the health function.

8.“SLEEP” button * Press the SLEEP button, the sleeping indicator light of indoor unit flashes on. * The air-conditioner runs in sleeping mode for 10 hours and quit sleep mode, recover back to former mode. * The unit will turn off automatically if the timing mode are running out of time. Note: press the MODE or ON/OFF button, the remote controller clears sleeping mode away.

9.“iFEEL” button

* Press this button can be used to set the feeling function. The LCD shows the actual room temperature when the function set and it shows the setting temperature when the function cancelled. * This function is invalid when the appliance at the Fan mode.

10.“DISPLAY” button

* In display mode, press button once, shut off display, press it again, LCD will show ambient & setting temperature after flashing 5s. It's convenient for users who are not adapt to noctilucence and it's also convenient for checking ambient&setting temperature anytime.

11.“iCLEAN” button

* When remote controller is at the off state, press “iCLEAN” button, the unit runs “iCLEAN” function .

* The purpose of this function is to clean dust on evaporator and dry the inside water of evaporator and to prevent the evaporator going moldy due to water deposition and boasting strange smell. * After setting “iCLEAN” function, press “iCLEAN” button or “ON/OFF” button to quit it.

* The clean function will be stop working after about 30 minutes running working without any operation.

12.“ELE.H” button(only for hot pump type) * In heating mode, press this button, the mode of operation is shifted into supplementary electric heating.

13.“Anti-FUNGUS” button * The purpose of this function is to dry the inside of the evaporator and to prevent the evaporator from going mouldy due to water deposition and thus dispersing strange smell. * This function is controlled by the remote controller under cooling, dry and auto (cooling and dry) modes, the horizontal wind guiding bars are at the initial position for cooling. The A/C runs under heating mode(the cooling only A/C only runs under fan mode), the internal fan runs for 3 minutes with weak wind before stop. * This function has not been set in the factory. You may freely set and cancel this

function. The setting method is: under “off” status of the A/C and the remote

controller, point the remote controller toward the A/C and continuously press “Anti-FUNGUS” button for one time, the buzzer keep beeping five times again after five times beep, indicating that this function is ready. In case this function has been set, unless the whole A/C is powered off or the function is manually cancelled, the A/C then has this function as default. * To cancel the function: 1. Under “off” status of the A/C and the remote controller, point the remote controller toward the A/C and continuously press “Anti-FUNGUS”button for one time, the buzzer keep beeping three times again after five times beep, indicating that this function has been cancelled; 2. Power off the whole A/C. * When this function is on, it is suggested not to restart the A/C before it is completely stop. * This function will not run in case of time stop.

14.“SPOT SWING” button

* Press this button, the horizontal wind direction vanes can swing automatically, when you have the desired vertical wind direction. * Press it again, the horizontal wind direction vanes will be stopped at the situation of your choice.

15.“ECO” button

* In cooling mode, press this button, the unit will runs “ECO” economic operation mode which costs the least power consumption. * After running for 8h, it will automatically exit, otherwise, press this button once again to quit it. * Note: The unit will turn off automatically if the timing mode are running out of time.

2) Introduction for mode settings

★Fix batteries

1. Slide open the cover according the direction indicated by arrowhead.

2.Put into two brand new batteries (7#), position the batteries to right electric poles (+ ＆-).

3.Put back the cover.

★Automatic operation mode

1. Press the ON/OFF button, the air-conditioner starts to operate.

2. Press the MODE button, select the automatic operation mode.

3. Press the SPEED button, you can select fan speed. You can select fan speed from LOW, MID, HIGH, AUTO.

4. Press the button again, the air-conditioner stops.

★Cooling/Heating operation mode(cold wind type has no heating function)

1.Press the ON/OFF button, the air-conditioner starts to operate.

2.Press the MODE button, select the Cooling or Heating

3.Press the “△”or “▽”button, set the temperature, temperature can be set at 1℃ difference range from 16-32℃.

4.Press the SPEED button, you can select fan speed. You can select fan speed from LOW, MID, HIGH, AUTO.

5.Press the button again, the air-conditioner stops.

★Fan operation mode

1. Press the ON/OFF button, the air-conditioner starts to operate.

2. Press the MODE button, select the Cooling or Heating operation mode.

3. Press the SPEED button, you can select fan speed. You can select fan speed from LOW, MID, HIGH.

4. Press the button again, the air-conditioner stops. Remark: In the circulation operation mode, to set the temperature is non-effective.

★Drying operation mode

1. Press the ON/OFF button, the air-conditioner starts to operate.

2. Press the MODE button, select the Dry operation mode.

3. Press the “△”or “▽”button, set the temperature, temperature can be set at 1℃ difference range from16-32℃.

4. Press the SPEED button, you can select fan speed. You can select fan speed from LOW, MID, HIGH, AUTO.

5. Press the button again, the air-conditioner stops.

3) Precautions

1.Aim the remote controller towards the receiver on the air- conditioner.

• The remote controller should be within 8 meters away from the receiver.

• No obstacles between the remote controller and receiver.

• Do not drop or throw the remote controller.

• Do not put the remote controller under the forceful sun rays or heating facilities and

other heating sources.

• Use two 7# batteries, do not use the electric batteries.

• Take the batteries out of remote controller before stop its using for long.

• When the noise of transmitting signal can't be heard indoor

unit or the transmission symbol on the display screen doesn't flare, batteries need be replaced.

• If reset phenomenon occurs on pressing the button of the remote controller, the electric quantity is deficient and new batteries need to be substituted.

• The waste battery should be disposed properly.

Note:

* The picture is general remote controller, contains almost all of the function buttons. They may be slightly different from material abject(depend on model). * All the figures above are the displays after being initially electrified or re-electrified after power off. In actual operations, the remote controller screen displays related items only.

* The cooling only units don’t have the function of heating or electric heating. When

the remote controller turns to such function buttons, the units will not result such effect. Please don’t turn the remote controller to such buttons.

5. Refrigerant System Diagram

Indoor heat exchanger

(Evaporation)

Compressor

(Compression)

Outdoor heat exchanger

(Condensation)

Capillary

(Throttling)

Steam-gas of low pressure

Super cooled liquid of high

pressure

Liquid of low

(also a little gas)

Gas of high pressure &

temperature

Indoor Unit

Outdoor Unit

5-1 Cooling Only

 Cooling Mode

 Cooling Cycle

pressure

5-2 Cooling & Heating

Indoor Unit

Outdoor Unit

Indoor heat exchanger

(Evaporation)

Compressor

(Compression)

Outdoor heat exchanger

(Condensation)

Capillary

(Throttling)

Steam-gas of low pressure

Super cooled liquid of high

pressure

Liquid of low

(also a little gas)

Gas of high pressure

& temperature

4-way valve

(Heat pump only)

 Cooling Mode

 Cooling Cycle

pressure

 Heating Mode

Indoor Unit

Outdoor Unit

Indoor heat exchanger

(Evaporation)

Compressor

(Compression)

Outdoor heat exchanger

(Condensation)

Capillary

(Throttling)

Steam-gas of low

Super cooled liquid of high

pressure

Super cooled liquid of

low pressure

Gas of high pressure

& temperature

4-way valve

(Heat pump only)

 Heating Cycle

pressure

6. Electrical Part

The diagrams listed below for reference only, please refer to the actual product.

6-1 Wiring Diagram

 Indoor Unit

 Outdoor Unit

Outdoor Unit Electric Chart

W(T/C)

V(S)

U(R)

Compressor

U V W

Blue

Black

Red

L-1

L-2

Reactor

11326007000545

CN88

Some models have no content inside dashed frame

Part II : Installation and Maintenance

7. Main Tools for Installation and Maintenance

8. Installation

8-1 Notes for Installation

Important Notices

 Before installation, please contact with local authorized maintenance center, if

unit is not installed by the authorized maintenance center, the malfunction may not solved, due to discommodious contact.

 The air conditioner must be installed by professionals according to the national

wiring rules and this manual.

 To move and install air conditioner to another place, please contact our local

special service center.

Requirements For Installation Position

 Avoid places of inflammable or explosive gas leakage or where there are strongly

aggressive gases.

 Avoid places subject to strong artificial electric/magnetic fields.  Avoid places subject to noise and resonance.  Avoid severe natural conditions (e.g. heavy lampblack, strong sandy wind, direct

sunshine or high temperature heat sources).

 Avoid places within the reach of children.  Shorten the connection between the indoor and outdoor units.  Select where it is easy to perform service and repair and where the ventilation

good.

 The outdoor unit shall not be installed in any way that could occupy an aisle,

stairway, exit, fire escape, catwalk or any other public area.

 The outdoor unit shall be installed as far as possible from the doors and windows

of the neighbors as well as the green plants.

Requirements for operations at raised height

 When carrying out installation at 2m or higher above the base level, safety belts

must be worn and ropes of sufficient strength be securely fasten to the outdoor unit, to prevent falling that could cause personal injury or death as well as property loss.

Requirements of the mounting structure

 The mounting rack must meet the relevant national or industrial standards in

terms of strength with welding and connection areas rustproofed.

 The mounting rack and its load carry surface shall be able to withstand 4 times or

above the weight of the unit, or 200kg, whichever is heavier.

 The mounting rack of the outdoor unit shall be fastened with expansion bolt.  Ensure the secure installation regardless of what type of wall on which it is

installed, to prevent potential dropping that could hurt people.

Electrical Safety Requirements

 Be sure to use the rated voltage and air conditioners dedicated circuit for the

power supply, and the power cord diameter must meet the national requirements.

 Be sure to use the rated voltage and air conditioners dedicated  When the maximum current of air conditioner is ≥16A, it must use the air switch

or leakage protection switch equipped with protection devices.

 The normal operating range is 90%-110% of the local rated voltage.

 The minimum clearance between the air conditioner and the combustibles is 1.5

NO.

Name

Quantity

Unit

Indoor Unit

Set

Remote Controller

PC 3 Batteries(7#)

PC 4 Instructions

Set 5 Drain pipe

 The power cable enables communication between the indoor and outdoor units.

You must first choose the right cable size before preparing it for connection.

Grounding Requirements

 The air conditioner is the type I electrical appliance and must ensure a reliable

grounding.

 Do not connect the grounding wire to a gas pipe, water pipe,lightning rod,

telephone line, or a circuit poorly grounded to the earth.

 The grounding wire is specially designed and shall not be used for other purpose,

nor shall it be fastened with a common tapping screw.

Others

 The connection method of the air conditioner and the power cord and the

interconnection method of each independent element shall be subject to the wiring diagram affixed to the machine.

 The model and rating value of the fuse shall be subject to the silkscreen on

corresponding controller or fuse sleeve.

8-2 Installation of Indoor Unit

 Installation Parts-checking

Packing list of the indoor unit

NOTE:

※ All accessories shall be subject to actual packaging material, and if there is any difference, please understand.

 Selection of Installation location

 Mounting plate

1. The wall for installation of the indoor unit shall be hard and firm, so as to prevent vibration.

2. Use the "+" type screw to fasten the peg board, horizontally mount the peg board on the wall, and ensure the lateral horizontal and longitudinal vertical.

3. Pull the peg board by hand after the installation, to confirm whether it is solid.

 Wall-through Hole

1. Make a hole with an electric hammer or a water drill at the predetermined position on the wall for piping, which shall slant outwardly by 5°-10°.

2. To protect the piping and the cables from being damaged running through the wall, and from the rodents that may inhabit in the hollow wall, a pipe protecting ring shall be installed and sealed with putty.

Note: Usually, the wall hole is Φ60mm~ Φ80mm. Avoid pre-buried power wire

and hard wall when making the hole.

 Route of Pipeline

1. Depending on the position of the unit, the piping may be routed sideway from the left or the right ( Fig 1 ), or vertically from the back( Fig 2 )(depending on the pipe length of the indoor unit). In the case of sideway routing, cut off the outlet cutting stock of the opposite side.

2. The power cord may be routed separately from the piping. Cut off the outlet cutting stock and then run the power cord through the hole, keeping the remaining part as a protection from rodents.

 Drain pipe connection

The size of pipe(mm)

Torque(N·m)

Φ6/Φ6.35

15～25

Φ9 /Φ9.5 2

35～40

Φ12/Φ12.7

45～60

Φ15.88

73～78

Φ19.05

75～80

1. Remove the mountings and pull the indoor unit pipe out of the housing.

used is shown in the following table.

1. Use the insulation sleeve to wrap the joint part the indoor unit and the connection pipe, and then use insulating material to pack and seal insulation pipe, to prevent generation of condensate water on the

2. Connect the water outlet with drain pipes, and make the connection pipe, cables, and the drain hose

3. Use plastic cable ties to wrap the connecting pipes, cables and drain hose. Run the pipe sloping

1. Hang the indoor unit on the peg board, and move the unit from left to right to ensure that the hook is

2. Push toward the lower left side and the upper right side of the unit toward the peg board, until the hook

2. Connect the connecting pipe to the indoor unit: Aim at the pipe center, tighten the Taper nut with fingers, and then tighten the T nut with a torque wrench, and the direction is shown in diagram on the right. The torque

Tightening torque table

 Wrap the Piping

joint part.

 Fixing the Indoor Unit

straight.

 Fixing the indoor unit

properly positioned in the peg board.

is embedded in the slot and makes a "click" sound.

 Electric Connection Requirement

● Loosen the screws and remove from the unit.

● Connect the cables respectively to the corresponding

terminals of the terminal board of the indoor unit (see the wiring diagram), and if there are signals connected to the plug, just conduct butt joint.

●Ground wire: Remove the grounding screw out of the electric bracket, cover the

NO.

Name

Quantity

Unit

Outdoor Unit

Set

Connecting pipe

PC 3 Plastic Strap

ROLL

Pipe Protection Ring

Set

Luting (putty)

PACKET

Wiring Diagram

grounding wire end onto the grounding screw and screw it into the grounding hole.

● Fix the cable reliably with fasteners (Pressing board).

● Put the E-parts cover back in its original place and fasten it with screws.

NOTE:

※ This manual usually includes the wiring mode for the different kind of A/C. We cannot exclude the possibility that some special type of wiring diagrams are not included. ※ The diagram are for reference only. If the entity is difference with this wiring diagram, please refer to the detailed wiring diagram adhered on the unit which you purchased.

8-3 Installation of outdoor Unit

 Packing list of the outdoor unit

 Selection of Installation location

 Install the connection pipe

Piping length

Amount of refrigerant to be added

≤5M

Not needed

5- 15M

CC≤12000Btu

20g/m

CC≥18000Btu

30g/m

Connect the Outdoor Unit with Connecting Pipe: Aim the

When prolonging the piping, extra amount of refrigerant must be added so that the operation and performance of the air conditioner will not be compromised.

1. Loosen the screws and remove E-parts cover from the unit.

fasten it with screws.

counter-bore of the connecting pipe at the stop valve, and tighten the Taper nut with fingers. Then tighten the Taper nut with a torque wrench.

★

Note: This table is for reference only.

 Wiring Connection

2. Connect the cables respectively to the corresponding terminals of the terminal board of the outdoor unit (see the wiring diagram),and if there are signals connected to the plug, just conduct butt joint.

3. Ground wire: Remove the grounding screw out of the

electric bracket, cover the grounding wire end onto the grounding screw and screw it into the grounding hole.

4. Fix the cable reliably with fasteners (Pressing board).

5. Put the E-parts cover back in its original place and

 Wiring diagram

Wiring Diagram

NOTE:

※ This manual is usually includes the wiring mode for the different kind of A/C. We cannot exclude the possibility that some special type of wiring diagrams are not included. ※ The diagram are for reference only. If the entity is difference with this wiring diagram, please refer to the detailed wiring diagram adhered on the unit which you purchased.

 Expelling the air

★Outdoor unit refrigerant discharging method

After the pipe side connection is complete, proceed as follows.

★Vacuum Pumping Method (R410A refrigerant evacuation must use the

1. To prevent air leakage and spilling tighten all connecting nut of all flare tubes.

connections are free of air leakage.

When the unit is heating, the condensing water and defrosting water can be out

Install the outdoor drain elbow in Φ25

hole on the base plate, and joint the drain hose to the elbow, so that the waste water

formed in the outdoor unit can be drained

out to a proper plate.

vacuum pumping method)

Before working on the air conditioner, remove the cover of the stop valve(gas and liquid valves)and be sure to retighten it afterward.(to prevent the potential air leakage)

2. Connect the stop valve, charge hose,

manifold valve, and vacuum pump.

3. Fully open the handle Lo of the manifold valve and apply vacuum for at least 15 minutes and check that

the compound vacuum gauge reads

-0.1MPa(-76cmHg).

4. After applying vacuum, fully open the stop valve with a hex wrench.

5. Check that both indoor and outdoor

 Outdoor condensation drainage(Heat pump type only)

reliably through the drain house.

Installation：

8-4 Check after installation and test operation

1. Check after installation

★ Electrical Safety Check ① If the supply voltage is as required. ② If there is any faulty or miss connection in each of the power, signal and

grounding wires.

③ If the grounding wire of the air conditioner is securely grounded. ★ Installation Safety Check ① If the installation is secure.

② If the water drain is smooth. ③ If the wiring and piping are correctly installed. ④ Check that no foreign matter or tools are left inside the unit. ★ Leak test of the refrigerant

Depending on the installation method, the following methods may be used to check for suspect leak, on areas such as the four connections of the outdoor unit and the cores of the cut-off valves and t-valves: ① Bubble method: Apply of spray a uniform layer of soap water over the suspected leak spot and observe carefully for bubble. ② Instrument method: Checking for leak by pointing the probe of the leak detector according to the instruction to the suspect points of leak.

2. Test operation

★ Test preparation ※Verify that all piping and connection cables are well connected. ※Confirm that the values at the gas side the liquid-side are fully open. ※Connect the power cord to an independent power socket. ※Install batteries in remote control. ★ Test Operation method ① Turn on the power and push the ON/OFF switch button of the remote controller to

start the air conditioner. ② Select COOL, HEAT (not available on cool-only models), SWING and other operation modes with the remote controller and see if the operation is ok.

9. Maintenance

No.

Error Name

Reference Code

Internal temperature sensor error

External coil sensor error

Internal coil sensor error

Internal fan error of wall mounted air conditioner（PG motor）

Internal fan error of wall mounted air conditioner（DC motor）

Sliding door error of floor standing

Internal and external communication error

E5（5E）

External DC fan error (3-core terminal motor)

Module protection error

PFC protection error

Compressor startup error

Exhaust sensor error

Pressing top head sensor error

External temperature sensor error

OVP or UVP error

Main external control panel and module panel communication error

Outdoor EE error

Recirculated sensor error（four-way valve switch error）

Cabinet internal fan error (see E4 for troubleshooting)

Function protection prompt of frequency conversion external machine

See the Error List

9-1 Troubleshooting Guide

Many error codes many appears on this air conditionor, and this troubleshooting guide is prepared for the maintenance personnel to detect the error position and the parts to be replaced during the troubleshooting process. In this Guide, the Troubleshooting Method is guided by the Error Name, and the Reference Code under the General Index is the error code of the internal unit of the mainstream model supplied by the Company.

Example: “internal coil sensor error” is coded as E3 in the error code of the internal

unit, but appears as flash-out via the trouble light of the external machine. However, their troubleshooting method is the same, and use the same table as well.

General index:

Example:

Explanation

of error

Cause: explain the principle of the specific error. Inspection path: The basic order of troubleshooting. Related key

position

Tools required

for inspection

Tools that should be carried for such troubleshooting, and replacing parts that may be necessary for such error.

Frequent

problematic

part

Any possibly broken part related to the error may be the parts that need to be replaced.

Inspection

procedure

and key

points

All the troubleshooting procedures for the reference of maintenance staff are prepared from simple to complex, from surface to internal, and from test to replacement. Although these key points do not cover all the error, and difficult or special problems are not included as well, but they can cover most of the common error.

Special

attention

Here are some often-overlooked problems for the reference of the maintenance personnel.

The problems in the market are always more than we think, so it is necessary for the maintenance personnel to understand the principle of air conditioning operation, and to make a flexible judgment of the fault in combination with the actual conditions. We we qlcome the maintenance personnel to constantly put forward new problems in the actual work, record the solutions and enrich our troubleshooting guide list.

（1）E1- internal temperature sensor error

Explanation of

error

Cause: The detection of short circuit or open circuit of internal

temperature sensor during the inspection of main control panel in the internal machine, indicated by “internal temperature sensor error”.

Inspection path: Sensor→Sensor wire→Connectors→Main internal

control panel

Tools required

for inspection

Multimeter, 15KΩ standard sensor（25℃）

Frequent

problematic part

Internal temperature sensor, main internal control panel

Inspection

procedure and

key points

1. Check whether there’s resistance problem, short circuit or open circuit in the sensor; the resistance value shall be within a reasonable range (15KΩ under the temperature of 25℃ for frequency conversion machine)

2. Check whether the sensor wire is broken.

3. Check whether the terminal connectors are well fixed; check whether the weld between the terminal and the main control panel is loose, and pull the terminal slightly for inspection if necessary.

4. Check whether the sensor is affected with damp.

5. In case no standard sensor is available at present, replace the internal temperature sensor by other sensor asides, and then check whether the error still exists; if the error disappears, replace the sensor; if the error still exists, check the main internal control panel and change if necessary.

Special attention

Most internal temperature sensors of the frequency conversion machine have a resistance value of 15KΩ. Do not use improper sensor during repairing and maintenance, or it may led to the wrong temperature sensing of the machine, the start error or shutdown error. You can switch the air conditioner to the

“Blowing” mode, and judge the accuracy of sensor though

environmental temperature displayed on the screen. In case a sensor with the resistance value over 15KΩ is used, the detected temperature will be much lower than the actual temperature, which may lead to the shutdown error under heating mode, or the startup error under cooling mode. In case a sensor with the resistance value below 15KΩ is used, the detected temperature will be much higher than the actual temperature, which may lead to the startup error under heating mode, or the shutdown error under cooling mode.

（2）E2 -external coil sensor error

Explanation of

error

Cause: The detection of short circuit or open circuit of external coil

sensor during the inspection of main external control panel, indicated by “external coil sensor error”.

Inspection path: Sensor→Sensor wire→Connectors→Main external

control panel

Tools required

for inspection

Multimeter, 20KΩ standard sensor (25℃）

Frequent

problematic part

External coil sensor, main external control panel

Inspection

procedure and

key points

1. Check whether there’s resistance problem, short circuit or open circuit in the sensor; the resistance value shall with a reasonable range (about 20KΩ for frequency conversion machine)

2. Check whether the sensor wire is broken.

3. Check whether the terminal connectors are well fixed; check whether the weld between the terminal and the main control panel is loose, and pull the terminal slightly for inspection if necessary.

4. Check whether the sensor is affected with damp. The coil sensor is quite easy to be affected with damp in case the lead of coil sensor is above the copper pipe.

5. In case no standard sensor is available at present, replace the temperature sensor of external coil by other sensor asides, and then check whether the error still exists; if the error disappears, replace the sensor; if the error still exists, check the main internal control panel and change if necessary.

Special attention

Most internal temperature sensors of the frequency conversion machine have a resistance value of 20KΩ. Do not use improper sensor during repairing and maintenance, or it may led to the start of protection mode due to wrong temperature sensing of the machine, or the protection error.

In case a sensor with the resistance value over 20KΩ is used, the

detected temperature will be much lower than the actual temperature, which may lead to the frequent entering of defrost mode, the illusory defrosting or the protection error during the cooling process.

In case a sensor with the resistance value below 20KΩ is used, the

detected temperature will be much higher than the actual temperature, which may lead to defrost error during the heating process, or the start of protection during the cooling process.

（3）E3 -internal coil sensor error

Explanation of

error

Cause: The detection of short circuit or open circuit of internal coil

sensor during the inspection of main internal control panel, indicated by “internal coil sensor error”.

Inspection path: Sensor→Sensor wire→Connectors→Main internal

control panel

Tools required

for inspection

Multimeter,, 5KΩ or 20KΩ standard sensoe（25℃）

Frequent

problematic part

Internal temperature sensor, main internal control panel

Inspection

procedure and

key points

1. Check whether there’s resistance problem, short circuit or open circuit in the sensor; the resistance value shall with a reasonable range (about 20KΩ for frequency conversion machine)

2. Check whether the sensor wire is broken.

3. Check whether the terminal connectors are well fixed; check whether the weld between the terminal and the main control panel is loose., and pull the terminal slightly for inspection if necessary.

4. Check whether the sensor is affected with damp. The coil sensor is quite easy to be affected with damp in case the lead of coil sensor is above the copper pipe.

5. In case no standard sensor is available at present, replace the temperature sensor of internal coil by other sensor asides, and then check whether the error still exists; if the error disappears, replace the sensor; if the error still exists, check the main internal control panel and change if necessary.

Special attention

Most internal temperature sensors of the frequency conversion machine have a resistance value of 20KΩ. Do not use improper sensor during repairing and maintenance, or it may led to the start of anti-frosting or overheat protection mode due to wrong temperature sensing of the machine.

In case a sensor with the resistance value over 20KΩ is used, the

detected temperature will be much lower than the actual temperature, which may lead to the high pressure of cold-blast protection system during the heating process, or the frequent start of anti-freezing protection during the cooling process.

n case a sensor with the resistance value below 20KΩ is used, the

detected temperature will be much higher than the actual temperature, which may lead to the frequent start of overheat protection mode during the heating or the overload protection during the cooling process.

（4）E4 -Internal fan error of wall mounted air conditioner（PG motor）

Explanation of

error

Cause: PG motor is equipped with speed feedback signal line. When

the feedback signal of speed is not received by the main internal control panel, it has no way to recognize the rotating speed of motor,

which will be indicated as “Internal fan error”. Main causes for the

disappearance of speed feedback signal are as follows: The fan is stucked; 2. The speed feedback component in the fan is broken; 3. Error of receiving circuit for the speed feedback signal from the main internal control panel.

Tools required

for inspection

Multimeter, A PG motor in normal working condition

Frequent

problematic part

Mechanical jam problem of internal fan, PG motor, main internal control panel

Inspection

procedure and

key points

1. Check whether the fan can work for a period of time before the error occurs. If yes, the reason of mechanical jam can be exclude.

2. Disconnect the power supply and move the fan blade of internal machine by hand to see if there’s any resistance. Some occasional internal fan error may relate to bearing coordination.

3. Reconnect the drive wire and speed feedback wire, thus to exclude any fan error due to connector loosening.

4. Check whether the plug-in terminal of speed feedback on the control panel is loose, and pull the terminal slightly for inspection if necessary.

5. Replace the motor in the faulted air conditioner with other PG motor (do not fix it with the fan for the time being), if the main control panel

still indicates “internal fan error”, then replace the main internal

control panel; if the error disappears, replace the internal fan.

Special attention

The main internal control panel will not indicates “internal fan

error” when the internal fan is still rotating; sometimes such error will

not be reported when obvious fan problems exist (such as the low-speed rotation due to damaged fan capacitors, or non-uniform rotating speed due to abnormal speed feedback.

Therefore, patience of the maintenance staff is required for the troubleshooting of fan error. You shall compare it with the normal condition, and detect and solve the problem in a flexible way.

(5) E4- Internal fan error of wall mounted air conditioner (DC motor)

Explanation of

error

Cause: The internal fan of some highly energy efficient models is DC

motor using a green plug through which the main internal control panel can drive the motor and sense the current rotational speed feedback. When the main internal control panel cannot receive the rotational

speed feedback signal of the motor, it will indicate “DC motor error”.

Disappearance of the rotational speed feedback signal may be caused by: 1 The motor is stuck and cannot work; 2 The speed feedback element

inside the fan is destroyed; 3 There’s something wrong with the speed

feedback signal receiving circuit of the main internal control panel.

Inspection path: Is DC motor stuck by foreign matter→motor destroyed → Motor terminal connectors→Main internal control panel

Tools required

for inspection

Multimeter, a DC motor in normal working condition

Frequent

problematic part

Mechanical jam of internal fan, internal DC motor, main internal control panel

Inspection

procedure and

key points

1. Check whether the fan accelerates to extremely high speed before the error occurs. If it can work for a period, the reason of mechanical jam can be excluded.

2. Plug and unplug the terminal of the DC motor again to exclude any fan error due to connector loosening, and pull the terminal slightly for inspection if necessary.

3. Replace the motor in the faulted air conditioner with other DC motor to plug in the main internal control panel (do not fix it with the fan for

the time being), if the main control panel still indicates “DC motor

error”, then replace the main internal control panel; if the error

disappears, replace the DC motor.

4. Multimeter can be used to distinguish whether it is main control panel problem or motor problem by: connect the motor with the main control panel and pay attention to the second (yellow) and fourth (black) wire from the outermost side among four lines of the terminal of the DC motor. After the air conditioner powers on in the cooling mode for a while, the voltage between the yellow and black wires should rise gradually and the motor should accelerates slowly, if the DC motor still won’t rotate, then the DC motor is destroyed.

Special attention

Five lead wires division: Count from the outermost side of the four

wires of the DC motor terminal, the first blue wire is the speed feedback wire with a voltage of 0.5-5V when the fan rotates; the second yellow wire is the motor driving wire with a voltage of

2.0-7.5V when the fan rotates; the second white wire is 15V power cord with a voltage of 15V in normal condition; the fourth black wire is 0V DC earth wire which is the benchmark of all the voltage tests; the fifth (red) wire is 310V wire which is strong with a voltage of 310V in normal condition, so be careful of electric shock.

(6) E4- Sliding door error of floor standing

Explanation of

sliding door

error

Cause: For the model with upper and lower sliding doors, the position

of trap door is sensed via the upper and lower photoelectric switches. When the sliding door closes, it will move upward until the upper photoelectric switch senses the sliding door; when the sliding door opens, it will move downward until the lower photoelectric switch senses the sliding door. When the photoelectric switch cannot sense the

position of the sliding door normally, it will indicate “sliding door

error”.

Inspection path: Mechanical jam of sliding plate →Synchronous motor → Can synchronous motor connect to 220V power → photoelectric switch connection wire → Photoelectric switch → Main internal control panel

Tools required

for inspection

Multimeter, photoelectric switch in normal condition

Frequent

problematic part

Mechanical jam of sliding plate, photoelectric switch, reversible synchronous motor, main internal control panel

Inspection

procedure and

key points

1. Power on and observe whether there is mechanical jam in the sliding plate. Note that new machines may be fixed by tapes, remove them.

2. If the sliding door slides normally when the machine powers on and

off but it still indicates “sliding door error”, then there’s something

wrong with the photoelectric switch.

3. If the sliding door does not slide when the machine powers on and off, check the reversible synchronous motor to see whether the motor is connected to 220V power or the motor’s wire is damaged.

4. If there is something wrong with the photoelectric switch, replace it with another one in normal condition and repeat the above procedures.

If the error disappears, then it’s photoelectric problem; if not, then it’s

main internal control panel problem.

Special attention

1. Please confirm that it is a new sealed one when replacing the photoelectric switch.

2. There are two photoelectric switches, so check the upper one when the error occurs when powering off and check the lower one when the error occurs when powering on.

3. Terminals connected to upper and lower photoelectric switches should be connected accordingly because they have different colors. Otherwise, it will lead to reverse switches for the sliding plate.

(7) E5(5E) -Internal and external communication error

Explanation of

error

Cause: The frequency converter needs internal and external

communication.When the communication cannot be reached, the

internal and external units will indicate “internal and external communication error”. Only “main internal control panel, connecting

cable and main external control panel” are related to communication; but sometimes the communication error will be indicated when the external unit has no power and the internal unit cannot connect with the external unit due to other errors, then such situation shall be

distinguished from “pure communication error” and treated in a

different way. Inspection path: Check if the external unit can power on and work (normally, the indicator light will turn off after lighting for several seconds, relay picks up, and PTC won’t heat seriously)

1. Can power on and work: Are the internal unit and external unit

matched→is the phase sequence of connecting wires of internal and

external units correct (the live wire of the internal unit connects with that of the external unit, the null wire of the internal unit connects with

that of the external unit)→Connecting wires touched well→Main internal control panel replacement→Main external control panel

replacement

2. Cannot power on and work: Can AC 220V be delivered to the terminal block of the external unit→Can the bridge rectifier and

module panel generate DC 310V→Can the main external control panel generate a low voltage power supply of DC 5V→Does the main

external control panel show the status of periodical reset.

Tools required

for inspection

Multimeter, main internal control panel in normal condition

Frequent

problematic part

Connecting wire phase sequence and contact, main internal control panel, main external control panel, module panel

Inspection procedure and key points

1. Firstly, the IDU and the ODU should be matched and connected properly.

2. Observe the main external control panel, turn on the air conditioner, three lights are all lighted up then off and the relay pulls in. If not, it is power supply problem.

3. Connect the black signal line S to terminal N of ODU. Turn on the A/C, if "E5" is still reported, the main external control panel need to be replaced. If "E5" is still reported at this time, go to step 4.

4. Change a new main internal control panel, if the error code E5 remains, then the problem should be on the main external control panel.

Special attention

When the external unit not power on: If the internal terminal board

does not transmit 220V power, replace the main internal control panel; if the external terminal board has 220V power, first check if (fuse, reactor and bridge rectifier) are normal. There is still something wrong, replace the whole set of external control unit; for the control unit composed of several function boards, try disconnecting the weak-current data wires among several control boards and then power the external unit on, if the main control panel can be powered on and

initialized successfully, then it’s the module panel problems; if the

main external control panel still cannot be powered on and initialized, replace the main external control panel.

(8) F0- External DC fan error (3-core terminal motor)

Explanation of

error

Cause: Our frequency changing external unit uses the 3-lead-wire DC

motor, or “externally driven DC motor” for short, after 2012. It has no

speed feedback circuit but 3 drive lead wires and its driving principle is similar to that of the compressor. The main control panel will indicate

“external DC fan error” when it detects imbalanced current on the three

lead wires of the driving motor.

Inspection path: Is the DC fan stuck by foreign matters→Motor terminal connectors→Main external control panel→Motor

Tools required

for inspection

Main external control panel in normal condition

Frequent

problematic part

Mechanical jam of external fan, main external control panel, external DC motor

Inspection

procedure and

key points

1. First exclude the possibility of mechanical jam of external fan blades.。

2. Observe if the terminal of the fan is not connected firmly or the order of lead wires is correct. If the external fan of the newly installed air conditioner rotates reversely, first observe if the color order of the three lead wires is correct, or change the order of any two of the three lead wires of the motor to see if the fan can rotate in the forward direction. 3．The DC motor of this scheme is relatively simple and reliable, so the problem is more likely to be caused by the drive part of the fan of the main external control panel. The maintenance personnel may as well prepare matched main external control panel before maintenance. If the

fan returns to normal after replacing the main control panel, then it’s

the main control panel problem; if it still indicates external DC motor error, then replace the external DC motor.

Special attention

Unlike the 5-core internal DC motor, there will be a process of fan blade position locking before the 3-core DC motor with external drive starts to rotate. The fan blades will shake mechanically for 3-5 seconds and then rotate slowly, which is normal phenomenon.

Explanation of

error

Cause: The power module is the part to directly drive the compressor

to work. It can protect the machine in time when overcurrent, overvoltage or overheat occurs and stops the compressor from

working. It will, at the same time, send “shutdown request” to the

module panel. The error triggered by the “shutdown request” is called “module protection error”.

Inspection path: Supply voltage → Compressor wire, reactor wire → System blocked → Module panel damaged → Main external control panel destroyed → Compressor destroyed

(9) F1 -Module protection error

Tools required

for inspection

Multimeter, pressure gauge, megameter, module panel in normal condition

Frequent

problematic part

Supply voltage, compressor wire, reactor, system pressure, module panel, main external control panel, compressor

Inspection

procedure and

key points

1. Is the order of compressor wires not correct, which makes the compressor rotate reversely? Try exchanging the compressor wires on U-V phase to see if the problem can be solved?

2. Check if the supply voltage is unstable and highly volatile, and test if the system pressure is normal. High system pressure will cause rotating problems to the compressor.

3. Is the module panel fixed to the radiator firmly? Will it cause pool cooling? Is the internal and external heat exchanger dirty, which lead to poor heat transfer and high system pressure?

4. If “module protection error” will be indicated immediately after starting up, it is almost certain that it’s substantial error, having nothing

to do with supply voltage and system pressure, it is suggested to observe if there is any component destroyed by strike arc near the module panel; use the multimeter to test if the resistances between any two compressor wires are the same. The resistances between any two compressor wires in normal condition are tiny resistances at ohm level and are basically equal; then use the megameter to measure if the resistance insulation of the three compressor wires against the earth

wire is good (normally at MΩ level), and check if the reactor wire is

well connected or the reactor is destroyed.

5. Test if the 15V and 5V (3.3V) power supply on the module panel is stable and exclude the module panel error caused by power supply of the main external control panel.

6. Methods for judging whether the power module is damaged: use the

“diode position” of the multimeter to measure the features of P of the

module panel against U-V-W three phases respectively. Measure the power module P-U, P-V and P-W, there is always infinite resistance at one side and fixed on-state voltage at the other side (generally 0.5V); measure the features between N-U, N-V and N-W in the same way, if short circuit occurs during any measurement, then the module is destroyed.

7. Replace with the module panel in normal condition for test. If the test is normal after changing the module panel, then the original module panel is destroyed.

8. After excluding problems of module, connecting wires, system and power supply, distinguish by ear. If there is only electromagnetic sound and the compressor does not work; or the sound of irregular running appears after the compressor works for a while and then it shuts down and indicates error; chances are that the compressor is blocked or destroyed, consider replacing the compressor.

(10) F2- PFC protection error

Explanation of

error

Cause: PFC board is a component of the inverter air conditioner for

power factor correction and voltage boosting. When the PFC board cannot perform power calibration as normal because of overcurrent and overvoltage, it will indicate “PFC protection error” and its function may also be integrated with the module panel or main control panel.

Inspection path: Supply voltage→AC and DC power path→PFC board data wire→PFC board→Main control panel

Tools required

for inspection

Multimeter, PFC board in normal condition

Frequent

problematic part

Supply voltage, reactor, PFC board, module panel, main external control panel

Inspection

procedure and

key points

1. Check if the supply voltage is unstable and highly volatile or the voltage is too low (below AC 135V)

2. The reactor is one of core parts of PFC. Check if the reactor itself is destroyed and the reactor connecting wire is in poor connection, which makes PFC functions not performed. Do not remove the reactor and replace with short circuit by no means.

3. If “PFC protection error” will be indicated immediately after starting up, it is almost certain that it’s substantial error, having nothing to do

with supply voltage, it is suggested to observe if there is any component destroyed by strike arc near the module panel

4. Test if the 15V and 5V (3.3V) power supply on the PFC board is stable and exclude the PFC board error caused by power supply of the main external control panel.

5. Replace with the PFC board in normal condition for test. If the test is normal after changing the PFC board, then the original PFC board is destroyed.

6. The possibility that there is something wrong with 15V or 5V power of the module panel that causes the control power supply problem of the PFC board is not excluded.

7. Some module panels integrate PFC function and compressor drive function in one, so just replace with an integrated module panel.

8. For single-panel single-chip main control panels, if PFC protection error appears, and there is no problem in supply voltage, reactor connection or reactor, just replace the controller of the external unit.

(11) F3- Compressor out-of-step error

Explanation of

error

Cause: The module panel will constantly test the current of lead wires

of the compressor and calculate the position of the rotator of the compressor when driving the compressor to work. When the compressor deviates far from the normal operating status , it will indicate “compressor out-of-step error” because the current of the compressor wires is too high or it cannot detect the position of the

rotator. This error always follows “module protection error”, so they

have similar inspection methods.

Inspection path: supply voltage→Compressor wire, reactor wire→

System blocked→Module panel damaged→Main external control

panel destroyed→Compressor destroyed

Tools required

for inspection

Multimeter, pressure gauge, module panel in normal condition

Frequent

problematic part

Supply voltage, compressor wire, reactor, system pressure, module panel, main external control panel, compressor

Inspection

procedure and

key points

1. Is the order of compressor wires not correct, which makes the compressor rotate reversely? Try exchanging the compressor wires on U-V phase to see if the problem can be solved?

2. Check if the supply voltage is unstable and highly volatile, and test if the system pressure is normal. High system pressure will cause rotating problems to the compressor.

3. Is the module panel fixed to the radiator firmly? Will it cause pool cooling? Is the internal and external heat exchanger dirty, which lead to poor heat transfer and high system pressure?

4. If “compressor out-of-step error” will be indicated immediately after

starting up, it is almost certain that it’s substantial error, having nothing

wire is good (normally at MΩ level), and check if the reactor wire is

well connected or the reactor is destroyed. Check if the DC voltage between P-N is too high (above 200V).

5. Test if the 15V and 5V (3.3V) power supply on the module panel is stable and exclude the module panel error caused by power supply of the main external control panel.

6. Replace with the module panel in normal condition for test. If the test is normal after changing the module panel, then the original module panel is destroyed.

7. After excluding problems of module, connecting wires, system and power supply, distinguish by ear. If there is only electromagnetic sound and the compressor does not work; or the sound of irregular running appears after the compressor works for a while and then it shuts down and indicates error; chances are that the compressor is blocked or destroyed, consider replacing the compressor.

Special attention

For the “compressor out-of-step error” and “module protection error”, the former is calculated by the main chip of the module panel and the latter is detected by the power module itself. They are abnormal operating phenomenon of the compressor essentially. If there is uncertainty about either error, analyze both together with similar method. For inverter air conditioners that are in poor electrical environment or are old, occasional occurrence of such errors is a normal protection.

(12) F4- Exhaust sensor error

Explanation of

error

Cause: The main external control panel will indicate “exhaust sensor

error” and send it to the main internal control panel when it detects

short circuit or open circuit of the exhaust sensor.

Inspection path: Exhaust sensor→Sensor wire→Connectors→Main

external control panel

Tools required

for inspection

Multimeter, 50KΩ standard exhaust sensor (25℃)

Frequent

problematic part

Exhaust sensor, main external control panel

Inspection

procedure and

key points

1. Check if there is any evident resistance problem in the sensor. Whether in short circuit or open circuit, the resistance should maintain

in a reasonable range (about 50KΩ when the compressor is not working and between 3 KΩ and 30 KΩ after the compressor works for

a while, the corresponding exhaust temperature should be 100℃

-38℃).

2. Check if the sensor wire or the sensor connecting wire is damaged.

3. Check if the connecting terminal is connected firmly, the weld between the terminal and the main control panel is loose; pull the terminal slightly for inspection if necessary.

4. Check whether the sensor is affected with damp. The coil sensor is quite easy to be affected with damp in case the lead wire of coil sensor is above the copper pipe.

5. If there is no standard sensor at hand, exchange the exhaust sensor with the one beside it to see if the error changes. If yes, there is something wrong with the sensor and it should be replaced; if it still

indicates “external coil sensor error”, replace the main external control

panel.

Special attention

Most exhaust sensors have a standard resistance of 50KΩ (25℃). Do not use improper sensor during maintenance, or the machine will sense the exhaust temperature mistakenly and enters the protection state

frequently. For example, in the case where replace the 20KΩ coil

sensor for the exhaust sensor by mistake, the exhaust temperature that the main external control panel senses will be higher than the actual exhaust temperature, which will make normal air conditioners enter the high exhaust temperature protection state frequently, and the compressor frequency threshold will rise and lead to shutdown of the compressor.

(13) F5 -Compressor top head sensor error

Explanation of

error

Cause: The compressor top head sensor is a compressor top head

temperature protection switch most of the time. It keeps closed (short circuit) when the compressor temperature is normal and switches off (open circuit) when the temperature is too high. The main external

control panel will indicate “compressor top head sensor error” when it

senses disconnection of the compressor top head protection switch. Inspection path: Compressor top head sensor (temperature protection switch)→Sensor wire→Connectors→Main external control panel

Tools required

for inspection

Pressure gauge, multimeter

Frequent

problematic part

System pressure, liquid deficiency, compressor top head sensor (temperature protection switch), main external control panel

Inspection

procedure and

key points

1. First check if the compressor top head temperature is too high (above 110℃) and causes action of the compressor top head sensor (temperature protection switch); reasons why the compressor top head

temperature is too high may be: the system is deficient in liquid and the compressor idles; the system is blocked and the pressure of the compressor is too high.

2. After excluding the possibility of the system problem, please note that the temperature protection switch is closed normally. Test if the terminals of the sensor are in the short-circuit condition with the multimeter. In the case of open circuit, then there is something wrong with the sensor or lead wires.

3. Check if the sensor wire or the sensor connecting wire is damaged.

4. Check if the connecting terminal is connected firmly, the weld between the terminal and the main control panel is loose; pull the terminal slightly for inspection if necessary.

5. Disconnect the power supply and short circuit a metal with the compressor top head terminal of the main external control panel. If the compressor top head sensor error disappears after start up, then replace

the sensor; if the error still occurs, it’s probably the main control panel

problem, replace the main external control panel.

Special attention

The compressor top head sensor is just a temperature switch which is highly reliable and is less likely to go wrong generally. Pay more attention to the system pressure and the compressor temperature.

（14）F6- external temperature sensor error

Explanation of

error

Cause: The detection of short circuit or open circuit of external

termperature sensor during the inspection of main external control panel, indicated by "external termperature sensor error". Inspection path: Sensor→Sensor wire→Connectors→Main external control panel

Tools required

for inspection

Multimeter, 15KΩ standard sensor（25℃）

Frequent

problematic part

External temperature sensor, main external control panel.

Inspection

procedure and

key points

1. Check whether there’s resistance problem, short circuit or open circuit in the sensor; the resistance value shall be within a reasonable

range (15KΩ under the temperature of 25℃).

2. Check whether the sensor wire is broken.

3. Check whether the terminal connectors are well fixed; check whether the weld between the terminal and the main control panel is loose, and pull the terminal slightly for inspection if necessary.

4. Check whether the sensor is affected with damp.

5. In case no standard sensor is available at present, replace the external temperature sensor with the other sensor asides, and then check whether the error still exists; if the error disappears, replace the sensor; if the error still exists, it's possible that the main control panel is faulted, change the main external control panel.

Special attention

Most of the standard resistance values of the external temperature sensors are 15KΩ (hen temeperature is at 25℃), and the higher the temeprautre is, the lower the resistance value is, and the lower the temperature is, the higher the resistance value is. Do not use improper sensor during repairing and maintenance, or it may led to the wrong temperature sensing of the machine.

（15）F7-OVP or UVP error

Explanation of

error

Cause: All the inverter air conditioners are equipped with voltage

inspection circuits, but differnt models of machines have differnt locations for the voltage inspection (on the modue panel or main external control panel). When the supply voltage is lower than 135V or higher than 275V, the inspectio circuit would detect over or under voltage protection signal and send it to the main external control panel and the main external control panel would raise the alarm "OVP or UVP error" and indicate it through the internal motor.

Inspection path: supply voltage → internal direct current voltage →

reactor wiring → module panel → main external control panel.

Tools required

for inspection

Multimeter

Frequent

problematic part

Supply voltage, reactor, moduel panel and main external control panel.

Inspection procedure and key points

1. First, check the supply environment of the user, especially shall check when the compressor of the air conditioner has been running for a while. The normal supply voltage shall be between 198V and 242V and the minimum work assurance range of the air conditioner shall be within 165V and 265V and it shall be especially noted that the voltage value shall not be decreased significantly after running of the compressor (voltage decreasing by over 25V), because if the supply voltage is decreased by a lot, it means the supply line capacity is insufficient and the user is usually suggested to replace the circuit or install a specizlied air conditioner supply voltage stabilizer.

2. For the external machines with PFC panels (without separate rectifier bridges), the operator shall ensure if the PFC function is on with the direct current voltage grade of the multimeter. When the compressor is running, voltage between P and N ends detected on the test module panel or main external control panel shall be over 200V and if the voltage is below that range, it is possible that the reactor is faulted or the PFC is broken.

3. When the air conditioner is switched on, if the compressor is not running but there is a alarm of "OVP or UVP error" and the power voltage detected with the multimeter is not below 150V, it's probably the voltage inspection circuit is faulted. The operator shall check and confirm the voltage inspection circuit is on which control panel first and then replace it. The regular replacement: for the external machine of single panel single chip, replace the external controller directly; and for the machine of two panels, replace the module panel.

Special attention

For some models, OVP or UVP error signal is delivered through the connector wires between the module panel and the main external control panel, thus it is possible the voltage signal is not delivered when the communication between teh module panle and the main external control panel is not good. It is possible that the error is fause raised but after some minutes that the error is finally confirmed as "Main external control panel and module pannel communication error", which shall be specially noted.

（16）F8-main external control panel and module panel communication error

Explanation of

error

Cause: Only the models with the module panels separated with the

main external control panels may have this error. When the machine is running normally, the module panel and the main external control panel would coordinate with each other on the communication to work and when the communication is off, the main external control panel would raise the alarm of "main control panel and module panel communication error". Only "module panel, data line and main external control panel" are related to such communication.

Inspection path: data line connection → module panel power

→module panel →main external control panel

Tools required

for inspection

Multimeter and regular module panel.

Frequent

problematic part

Module panel and main control data line, module panel and main external control panel.

Inspection

procedure and

key points

1. First check if the communication connection line (mostly 4 chips) between the module panel and main contrl panel gets loose and if the connection is faulted.

2. Measure and check with a multimeter if the power from the main external control panel is normal and especially note that if the 5V (3.3V) power is led to the module panel. Eleminate the possibility that it's not running normally because there is no 5V (3.3V) power at the module panel.

3. The maintenance personnel shall replace the module panel of the faulted air conditioner with a regular module panel taken with him and if the communication error disappears when the external machine is switched on, it means the original module panel is faulted and if the error is still there, maybe the main external control panel shall be replaced.

Explanation of

error

Cause: Many parameters need to be preset for the running of the

external unit of the air conditioner and such parameters are placed in a data storage 8-feet chip, which is called "EEPROM" or "EE" for short. The motor on the main external control panel can only work after reading the data stored in EE and if not read, the alarm "outdoor EE error" would be reported and raised in the internal machine. Reasons for data not being read are as follows:

1. wrong EE chip data format;

2. EE chip is broken;

3. bad contact of EE or fault of EE reading circuit;

4. backward installation of EE chip.

Inspection path: main external control panel.

Tools required

for inspection

None.

Frequent

problematic part

Bad contact of EE, main external control panel.

（exclusive of external machine of single panel）

（17）F9- outdoor EE error

Inspection

procedure and

key points

1. Replace the main external control panel directly.

（18）FA- recirculated sensor error (only models of electronic expansion valves

Explanation of

error

Cause: The recirculated sensors are only used on machine models of

electronic expanssion valves and the back temperature value is considered as the basis for adjustment of the electronic expanssion valve and determination if the four-way valve changes the position normally during heating. When the main control panel detects open circuit or short circuit of the recirculated sensor, it would raise an alarm of "recirculated sensor error" and send it to the main internal control panel to indicate it.

Inspection path: four-way valve →recirculated sensor → sensor wire

→ connectors → main external control panel

Tools required

for inspection

Multimeter, pressure meter, normal 20KΩ recirculated sensor

Frequent

problematic part

Four-way valve, recirculated sensor, main external control panel.

Inspection

procedure and

key points

1. If the error appears in heating but not in cooling, first check if the four-way valve failed to change the position or there is a back flow, which can be estimated by measuring the high and low pressures with the pressure meter; for the consideration of electricity control, we can use a multimeter. During heating, check if the four-way valve terminal can switch a circuit of 220V, if yes and the four-way valve still is faulted in the position changing, the four-way valve is faulted; and if there is no circuit over 220V in heating, it means the main external control valve is faulted.

2. If it is not the four-way valve that is faulted, check on the resistance value and short circuit problems and the resistance value shall be within a proper range (around 20KΩ at temperature of 25℃).

3. Check whether the terminal connectors are well fixed; check whether the weld between the terminal and the main control panel is loose, and pull the terminal slightly for inspection if necessary.

4. Check whether the sensor is affected with damp. For the recirculated sensor, if the led is on the above and thecopper pipe is below, it is possible to be damped.

5. The maintenance personnel can replace the possibly faulted recirculated sensor with a normal one and if the error disappears, it means the original recirculated sensor is faulated and needs to be replaced; and if the error is still there, consider to replace the main external control panel.

are involved)

（19）Function protection prompt of frequency conversion external machine

Explanation of

error

Cause: In the regular running of the air conditioner, for some

nonfaulted status, it may need the compressor to shut down or limit or lower the frequency so as to protect the normal operating of the entire cooling system (eg. defrosting, slight undercooling, over pressure, overcurrent, etc.). These problems are not considered as errors and would not be reflected in the internal machine, however as to make sure the maintenance personnel is familar with the running status of the air conditioner, three indicator lights are used on the main external control panel for reference of the maintenance personnel. Including: over current protection, cooling overload protection, indoor heating high temperature protection, indoor cooling freezing protection, over pressure and under pressure protection.

Tools required

for inspection

Multimeter.

Frequent

problematic part

Regular protection, system blockage, power supply not as usual, resistance value of sensor drifts or is used wrong.

Inspection

procedure and

key points

1. Defrosting: with a defrosting signal, meaning the air conditioner is under defrosting procedure and it is normal, but if there is frequent defrosting, it shall be specifically noted if heat exchange of the external unit is faulted, if the fan revolving speed is low and if the resistance value of the coil sensor is drifted or the temperature is inaccurately measured or it is damaged.

2. Over current protection: it is more possible to appear under high temperature cooling status and the over current of compressor is usually reflected by over high load of the compressor. It is normal if such protection appears under a very high temperature cooling status but not under low temperature low load status.

3. Cooling overload protection: it is more possible when the frequency conversion machine is under a high temperature cooling status. When the outdoor coil sensor senses the temperature is too high, as to provent the compressor from overload, it would possitively lower the frequency and it is normal for the protection under the high temperature cooling status.

4. Indoor high temperature heating protection: it is more possible when the frequency conversion machine is under a high temperature heating status. When the indoor coil sensor senses the temperature is too high, as to provent the compressor from overload, it would possitively lower the frequency and it is normal for the protection in a warm room.

5. Indoor cooling freezing protection: it is more possible to appear under a low temperature cooling status. When the indoor coil sensor senses the temperature is too low, as to prevent the heat exchanger of the internal machine from frosting, it would possitively lower the frequency and it is normal for the protection in a low temperature room.

6. Over or under pressure protection: this protection is a pilot protection for the "over or under pressure error". When the power pressure is too high or too low but not so high or so low to reach limit for shutting down (within 165V-265V), it would limit and lower the frequency first to reduce the air conditioner's needs for the power to keep teh air conditioner running. This protection is for the adaption to a unstable power environment and when there is such protection prompt, it usually means it is possible for "OVP and UVP error" and the maintenance personnel shall especially note.

7. Cooling overload protection, indoor high temperature heating protection and indoor coolign freezing protection are also possible related to the drift of the resistance value of the sensor.

9-2 Common Parameters

No.

Error

Code

Error Name

Probable Trouble Location

Internal room temperature

sensor error

Internal room temperature sensor, main internal control panel

External coil sensor error

External coil sensor error, main external control panel

Internal coil sensor error

Internal coil sensor error, main internal control panel

Indoor fan error

Mechanical jam of internal fan blade, internal fan, main internal control panel

E5(5E)

Indoor and outdoor unit

communication error

Bridge cable, main internal control panel, main external control panel, module panel

Outdoor DC fan error

Mechanical jam of external fan, external DC fan, main external control panel

Module protection error

Power voltage, compressor cable, reactor, module panel, main external control panel, compressor

PFC protection error

Power voltage, reactor, module panel, main external control panel

Compressor out-of-step

error

System pressure, compressor cable, module panel, main external control panel, compressor

Exhaust air sensor error

Exhaust air sensor, main external control panel

Compressor cap sensor

error

System pressure, compressor cap sensor (protection switch), main external control panel

External room temperature

sensor error

External room temperature sensor, main external control panel

OVP or UVP error

Power voltage, reactor, module panel, main external control panel

Main external control

panel and module panel

communication error

Connection wire of module and main

control data, module panel, main external control panel

Outdoor EE error

Main external control panel

Recirculated sensor error

Recirculated sensor, four-way valve, main external control panel

1． Display error code of indoor unit: Frequency conversion air conditioners only involve E1, E2, E3 and E4

2. Display error code of outdoor unit's indicator lights:

No. LE

D1 LED2 LED3

Error Name

Probable Trouble Location

1 ○ ○

○

Normal (outdoor

unit standby)

Normal, all three lights off for standby status.

2 ★ ★

★

Normal

(compressor

running)

Normal, all three lights flash while compressor running.

3 ● ●

●

Forced service

(test mode)

Normal

4 ★ ★

●

Module

protection error

Power voltage, compressor cable, reactor, module panel, main external control panel, compressor.

5 ★ ★

○

PFC protection

error

Power voltage, reactor, module panel, main external control panel.

6 ★ ●

★

Compressor

out-of-step error

Power voltage, compressor cable, module panel, main external control panel, compressor.

7 ★ ○

★

Exhaust air sensor

error

System pressure, exhaust air sensor, main external control panel.

● ★★

External coil

sensor error

External coil sensor, main external control panel.

○ ★★

External room

temperature sensor error

External room temperature sensor, main external control panel.

10 ★ ●

●

Indoor and

outdoor unit

communication

error

Connection wire, main internal control panel, main external control panel, EE reverse connection, module panel.

11 ★ ●

○

Main external

control panel and

module panel

communication

error

Connection wire of module and main control data, module panel, main external control panel

12 ★ ○ ● Outdoor EE error

Main external control panel

★ ○○

Outdoor DC fan

error

Mechanical jam of external fan, external DC fan, main external control panel.

14 ● ★

●

Internal room

temperature sensor error

Internal room temperature sensor, main internal control panel.

Display by the 3 LED indicator lights on the control panel of the outdoor unit: ○ for off; ● for on; ★ for flashing.

15 ● ★

○

Internal coil sensor error

Internal coil sensor, main internal control panel.

16 ○ ★ ● Indoor fan error

Mechanical jam of fan, internal fan, main internal control panel.

17 ○ ★

○

Refer to tooling

display for other

errors

Entire set of external controller.

18 ● ●

★

Compressor cap

sensor error

System pressure, compressor cap sensor (protection switch), main external control panel.

19 ● ○

★

Recirculated

sensor error

Recirculated sensor, four-way valve switch error, main external control panel.

20 ○ ●

★

※ Compressor

overpower

protection

Power voltage, module panel, main external control panel.

21 ○ ○

★

※ Over current

protection

Power voltage, system pressure, module panel, main external control panel.

22 ● ●

○

Exhaust sensor

error

System pressure, exhaust sensor, main external control panel.

23 ● ○

●

※ Cooling

overload

protection

Condenser, external fan, capillary, external coil sensor, main external control panel.

○ ●●

※ Indoor high

temperature

heating protection

Evaporator, internal fan, thin unit connection pipe, internal coil sensor, main internal control panel.

● ○○

※ Indoor

cooling freezing

protection

Evaporator, internal fan, capillary, internal coil sensor, main internal control panel.

26 ○ ●

○

Compressor shell

temperature

protection

Same as "18 Compressor cap sensor error".

27 ○ ○

●

※ OVP or UPV

error

Power voltage, reactor, module panel, main external control panel.

9-3 Troubleshooting for Normal Malfunction

 The Foremost Inspecting Items

① The input voltage must be within +10% tolerance of the rated Voltage. If it is not the case, the air-conditioner will probably not work normally. ② Check the connecting cord between indoor unit and outdoor unit to see if it is properly connected. The connecting must be done according to the wiring diagram,

please also notice that even different models may have the connecting cord of the

NO.

Problems

Causes

The motor is heard operating but the air-conditioner does not work when the indoor unit is powered on

Since the air-conditioner is powered on, it will come to working condition as long as you press the ON/OFF button of the remote control and the Signal is well received.

The compressor stops running but the indoor fan motor keeps working when it is at cooling mode with the indoor temperature higher than set temperature.

If you turn off the air-conditioner and restart it immediately, it will return to normal in 3 minutes, after that, the air-conditioner will automatically adjust the indoor fan speed to what you set.

The compressor works discontinuously at dehumidifying mode.

The air-conditioner will automatically control the working of the compressor according to the inside temperature.

The air-conditioner does not work while the LED display is on.

The TIMER is set with the A/C; it will be in hold on condition. If the TIMER setting is cancelled, the air-conditioner will return to normal working condition.

The compressor works discontinuously at cooling and dehumidifying mode, and the indoor fan motor slows down.

The compressor stops internally or the fan motor slows down to prevent the indoor heat exchanger from being frozen.

same specification. Please check if the marks at the connecting terminal and the marks on the cord can match, otherwise, the air-conditioner will not work normally. ③ If the following phenomena are found, the problem is not from the air-conditioner itself.

 Fault Diagnosis by Symptom

①No Power Display

(1) Items

a) Check if the input voltage is correct? b) Check if the AC power supply connecting is correct? c) Check if the output voltage of the manostat L7805 (IC2) is correct?

(2) Trouble shooting procedure

②The Indoor Fan Motor Does Not Work

(1) Items

a) Check if the indoor fan motor is connected correctly to the connector (CN8)? b) Check if the AC input voltage is correct? c) Check if the IC of indoor fan motor is connected correctly to the connector

(CN2)?

d) Check if the capacity of indoor fan motor is connected correctly to the connector (CN8)? (2) Trouble shooting procedure

③The Outdoor Unit Does Not Work

(1) Items

a) Check if the input voltage is correct?

b) Check if the wire connection of the outdoor connecting terminal is correct?

(2) Trouble shooting procedure

④The Step Motor Does Not Work

(1) Items

a) Check if the input voltage is correct?

b) Check if the step motor controlling the up-down movement firmly connected to Cn2? (2) Trouble shooting procedure

⑤Heating Mode Can Work, But No Hot Air Blow

(1) Check if the set temperature is lower than the indoor temperature? (2) Check if the indoor PCB is connected to the terminal correctly?

⑥ Remote Control Can Not Work

Trouble shooting procedure

10. Removal Procedure

Parts

Procedure

Diagram

Front Panel

1) Turn off the power, hold

the middle panel with the middle finger

2) open the panel upwards,

remove the panel fixing shaft, and remove the panel.

air louver

Remove axial sleeve of air louver, bend the louver outwards and then remove the louver.

air filter

Loosen the clasp of filter, push the filter inward and then draw it upward to remove it.

Stop operation of the air conditioner and remove the power cord before repairing the unit.

10-1 Indoor Unit

 9000BTU

Medium

frame wiring

cover

Loosen the screws of the medium frame wiring cover

with screwdriver，remove the electric box cover.

Decorative

panel

Use thumb to open the middle frame and remove the decorative plate.

Left and right

terminal

board

Remove left and right terminal board

Screw cover

Press screw cover firmly on the middle frame , the mark

becomes unlocked, then remove the two screw caps .

medium

frame

Loosen the clasps of the medium frame, remove the medium frame.

Electrical

Parts

(Main PCB)

1) Take all the connector of PCB upper side out.(Including Power cord)

2) Detach the outdoor unit connection wire from the terminal block.

3) If pulling the main PCB up, it will be taken out.

air vent, louver link

Remove axial sleeve of louver link, bend the air vent outwards and then remove the air vent and louver link.

Pipeline clamp

Remove the Pipeline clamp.

Mounting plate

Remove the Mounting plate.

Heat

Exchanger

1) Loosen fixing earth screws of right side.

2) Detach the connection pipe.

3) Detach the holder pipe at the rear side.

4) Loosen fixing screws of right and left side.

5) Detach the heat exchanger from the indoor unit.

Motor press

plate

Remove the screw of the motor press plate and then remove the press plate.

Fan Motor

Cross Fan

1) Loosen fixing screws and detach the motor holder.

2) Loosen fixing screw of fan motor. (with a M6 wrench)

3) Detach the fan motor from the fan.

4) Detach the fan from the left holder bearing.

volute

Remove screws on volute and remove the volute.

 12000BTU

Parts

Procedure

Diagram

Front Panel

3) Turn off the power, hold

the middle panel with the middle finger

4) open the panel upwards,

remove the panel fixing shaft, and remove the panel.

air louver

Remove axial sleeve of air louver, bend the louver outwards and then remove the louver.

air filter

Loosen the clasp of filter, push the filter inward and then draw it upward to remove it.

Medium

frame wiring

cover

Loosen the screws of the medium frame wiring cover

with screwdriver，remove the electric box cover.

Decorative

panel

Use thumb to open the middle frame and remove the decorative plate.

Left and right

terminal

board

Remove left and right terminal board

Screw cover

Press screw cover firmly on the middle frame , the mark

becomes unlocked, then remove the two screw caps .

medium

frame

Loosen the clasps of the medium frame, remove the medium frame.

Electrical

Parts

(Main PCB)

1) Take all the connector of PCB upper side out.(Including Power cord)

2) Detach the outdoor unit connection wire from the terminal block.

3) If pulling the main PCB up, it will be taken out.

air vent, louver link

Remove axial sleeve of louver link, bend the air vent outwards and then remove the air vent and louver link.

Pipeline clamp

Remove the Pipeline clamp.

Mounting plate

Remove the Mounting plate.

Heat

Exchanger

1) Loosen fixing earth screws of right side.

2) Detach the connection pipe.

3) Detach the holder pipe at the rear side.

4) Loosen fixing screws of right and left side.

5) Detach the heat exchanger from the indoor unit.

Motor press

plate

Remove the screw of the motor press plate and then remove the press plate.

Fan Motor

Cross Fan

1) Loosen fixing screws and detach the motor holder.

2) Loosen fixing screw of fan motor. (with a M6 wrench)

3) Detach the fan motor from the fan.

4) Detach the fan from the left holder bearing.

volute

Remove screws on volute and remove the volute.

 18000BTU

Parts

Procedure

Diagram

Front Panel

5) Turn off the power, hold

the middle panel with the middle finger

6) open the panel upwards,

remove the panel fixing shaft, and remove the panel.

air louver

Remove axial sleeve of air louver, bend the louver outwards and then remove the louver.

air filter

Loosen the clasp of filter, push the filter inward and then draw it upward to remove it.

Medium

frame wiring

cover

Loosen the screws of the medium frame wiring cover

with screwdriver，remove the electric box cover.

Decorative

panel

Use thumb to open the middle frame and remove the decorative plate.

Left and right

terminal

board

Remove left and right terminal board

Screw cover

Press screw cover firmly on the middle frame , the mark

becomes unlocked, then remove the two screw caps .

medium

frame

Loosen the clasps of the medium frame, remove the medium frame.

Electrical

Parts

(Main PCB)

1) Take all the connector of PCB upper side out.(Including Power cord)

2) Detach the outdoor unit connection wire from the terminal block.

3) If pulling the main PCB up, it will be taken out.

air vent, louver link

Remove axial sleeve of louver link, bend the air vent outwards and then remove the air vent and louver link.

Pipeline clamp

Remove the Pipeline clamp.

Mounting plate

Remove the Mounting plate.

Heat

Exchanger

1) Loosen fixing earth screws of right side.

2) Detach the connection pipe.

3) Detach the holder pipe at the rear side.

4) Loosen fixing screws of right and left side.

5) Detach the heat exchanger from the indoor unit.

Motor press

plate

Remove the screw of the motor press plate and then remove the press plate.

Fan Motor

Cross Fan

1) Loosen fixing screws and detach the motor holder.

2) Loosen fixing screw of fan motor. (with a M6 wrench)

3) Detach the fan motor from the fan.

4) Detach the fan from the left holder bearing.

volute

Remove screws on volute and remove the volute.

 24000BTU

Parts

Procedure

Diagram

Front Panel

7) Turn off the power, hold

the middle panel with the middle finger,

8) open the panel upwards,

remove the panel fixing shaft, and remove the panel.

air louver

Remove axial sleeve of air louver, bend the louver outwards and then remove the louver.

air filter

Loosen the clasp of filter, push the filter inward and then draw it upward to remove it.

Medium

frame wiring

cover

Loosen the screws of the medium frame wiring cover

with screwdriver，remove the electric box cover.

medium

frame

Loosen the clasps of the medium frame , remove the medium frame.

Electrical

Parts

(Main PCB)

1) Take all the connector of PCB upper side out.(Including Power cord)

2) Detach the outdoor unit connection wire from the terminal block.

3) If pulling the main PCB up, it will be taken out.

air vent, louver link

Remove axial sleeve of louver link, bend the air vent outwards and then remove the air vent and louver link.

Heat

Exchanger

1) Loosen fixing earth screws of right side.

2) Detach the connection pipe.

3) Detach the holder pipe at the rear side.

4) Loosen fixing screws of right and left side.

5) Detach the heat exchanger from the indoor unit.

Motor press

plate

Remove the screw of the motor press plate and then remove the press plate.

Fan Motor

Cross Fan

1) Loosen fixing screws and detach the motor holder.

2) Loosen fixing screw of fan motor. (with a M6 wrench)

3) Detach the fan motor from the fan.

4) Detach the fan from the left holder bearing.

volute

Remove screws on volute and remove the volute.

10-2 Outdoor Unit

Part

Procedure

Diagram

top cover

Turn off the power , remove connection screws among top cover plate, front panel and right side panel, then remove the top cover.

Main

controller

cover

Remove the main controller cover (no screw)

panel grille

Remove connection screws between the front grille and the front panel .Then remove the front grille.

Front panel

Remove connection screws connecting the front panel with the chassis and the motor support , and remove the front pannal.

E-part cover

Remove connection screws Connecting the right side panel, then remove the E-part cover.

Right side

panel

Remove connection screws connecting the right side panel with the valve support and electric box, then remove the right side panel.

Axial flow

blade

Remove the nut fixing the blade and then remove the axial flow blade.

Outer motor

Remove the tapping screws fixing the motor, pull out the lead-out wire and remove the motor.

Electric box

assy

Loosen the wire and disconnect the terminal. Lift to remove the electric box assy.

Motor

support

Remove the tapping screws fixing the motor support . Lift motor support to remove it.

reactor

Remove 2 connection screws Connecting the partition board, remove the reactor.

Partition

board

Loosen the screws of the partition board， then lift and pull the partition board to

remove .

left side

support plate

Remove connection screws connecting the left side support plate with the valve support, then remove the left side support plate.

Pipeline

assembly

After the unit is discharged, Unscrew the fastening nut of the 4-way Valve Assy coil and remove the pipeline assembly.

Stop valve assembly

1) Remove the screws fixing the gas

2) valve. Unsolder the welding spot

connecting gas valve and air return pipe and remove the gas valve.

3) Remove the screws fixing liquid

valve. Unsolder the welding spot connecting liquid valve and remove the liquid valve.

Valve plate

Loosen 1 footing screws of valve plate, remove the valve plate.

Compressor

Loosen 3 footing screws of compressor, Remove and remove the compressor.

condenser

Loosen 2 fixing screws Connecting chassis, and remove the condenser. Last remaining chassis.

11. Exploded Views and Parts List

The models listed below for reference only, please refer to the actual product.

11-1 Indoor Unit

1) Swift Inverter 9U  Exploded View

 Part List

NO.

Part Name

Quantity

NO.

Part Name

Quantity

Panel 1 13

Evaporator assembly

Display board

13.1

Evaporator left side carriage

Air louver（Horizontal）

13.2

Evaporator part A

Filter

13.3

Evaporator part B

Medium frame decorative strip

Motor cover

Left side panel

IDU fan motor

Medium frame

Mounting plate assembly

Right side panel

Pipe clamp

Chassis assembly

Main controller

9.1

Manual louver link

19.3

Control box

9.2

Air blade（Vertical）

19.4

Main control board

9.3

Air louver

19.7

Terminal board

9.7

Chassis

Control box cover

9.8

Drain jam

Remote controller

9.9

Shaft sleeve

Medium frame wiring cover

9.10

Step motor

Screw cover

Bearing assembly

Outlet pipe assembly

Bearing fixed chassis

Drain hose

Cross flow fan

2) Swift Inverter 12U

 Exploded View

 Part List

NO.

Part Name

Quantity

NO.

Part Name

Quantity

Panel 1 14

Evaporator assembly

Display board

14.1

Evaporator left side carriage

Air louver（Horizontal）

14.2

Evaporator assembly

Filter

14.2

Evaporator assembly

Medium frame wiring cover

Cross flow fan

Middle frame wiring cover fire board

Motor cover

Screw cover

IDU fan motor

Medium frame assembly

Mounting plate assembly

8.1

Left cover

Pipe clamp

8.2

Right cover

Main controller

8.3

Decorative board of medium frame

20.1

Temperature sensor

Anion generator

20.3

Main control board

Chassis assembly

20.4

Control box

11.1

Swing connecting rod

20.5

Cable clamp of power cord

11.2

Left air blade

20.7

Terminal board

11.3

Right air blade

Remote controller

11.4

Main air blade

Water flow tube assembly

11.5

Air louver step motor

Water hosepipe

11.6

Chassis

Power cord

Bearing fixed chassis

Power cable

Bearing assembly

3) Swift Inverter 18U

 Exploded View

 Part List

NO.

Part Name

Quantity

NO.

Part Name

Quantity

Panel

13.4

Left-right swing blade

Display board

13.5

Manual louver link

Air louver（Horizontal）

Mounting plate assembly

Filter 2 15

Pipe clamp

Screw cover

Air louver step motor

Medium frame wiring cover

Step motor shaft sleeve

Medium frame decorative strip

Main controller

Medium frame unit

18.1

Control box

8.1

Left side panel

18.2

Cover of electric controller box

8.2

Medium frame

18.4

Main control board

8.3

Right side panel

18.5

Temperature sensor

Evaporator assembly

18.6

Terminal board

9.1

Evaporator left side carriage

18.7

Power wire clamp

9.2

Evaporator assembly

18.8

Temperature sensor

9.2

Evaporator assembly

Power wire cable clamp

9.3

Evaporator protecting bush

Anion generator

Bearing fixed chassis

IDU fan motor

Bearing assembly

Motor cover

Cross flow fan

Control box cover

Chassis assembly

Remote controller

13.1

Chassis

Power cable

13.2

Stopple

Outlet pipe assembly

13.3

Air louver

Drain hose

4) Swift Inverter 24U

 Exploded View

 Part List

NO.

Part Name

Quantity

NO.

Part Name

Quantity

Panel

13.2

Stopple

Display board

13.3

Air louver

Air louver（Horizontal）

13.4

Left-right swing blade

Filter

13.5

Manual louver link

Screw cover

Mounting plate assembly

Medium frame wiring cover

Pipe clamp

Medium frame decorative strip

Air louver step motor

Medium frame unit

Step motor shaft sleeve

8.1

Left side panel

Main controller

8.2

Medium frame

18.1

Control box

8.3

Right side panel

18.4

Main control board

Evaporator assembly

18.5

Temperature sensor

9.1

Evaporator left side carriage

18.6

Terminal board

9.2

Evaporator assembly

Power wire cable clamp

9.2

Evaporator assembly

IDU fan motor

9.3

Evaporator protecting bush

Motor cover

Bearing fixed chassis

Control box cover

Bearing assembly

Remote controller

Cross flow fan

Outlet pipe assembly

Chassis assembly

Drain hose

11-2 Outdoor Unit

1) Swift Inverter 9U  Exploded View

 Part List

NO.

Part Name

Quantity

NO.

Part Name

Quantity

Right side panel

Top cover

E-parts cover

Isolation cardboard

Valve plate

4-way valve tubing assembly

Stop valve

17.1

4-way valve

Stop valve

17.2

Suction pipe assembly

Chassis assembly

17.3

Discharge pipe assembly

6.1

Chassis

Partition board

6.2

Base footing

Main controller

6.4

Compressor footing bolt

19.1

Control box cover

Compressor assembly

19.2

Main control board

Panel grille

19.3

Control box

Panel

19.4

Radiator

Axial flow fan

19.5

Terminal board

Left side board

19.6

E-parts bracket

Motor

Accessories

Motor support

20.1

Putty 1 14

Condenser assembly

Plastic tie

14.1

Condenser unit

Reactor

14.2

Capillary assembly

Temperature Sensor

2) Swift Inverter 12U  Exploded View

Tadiran Telecom Swift Inverter 9U, Swift Inverter 24U, Swift Inverter Series, Swift Inverter 36U, Swift Inverter 12U Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual