Panasonic CS-XE9PKUA, CS-XE12PKUA, CU-XE12PKUA, CU-XE9PKUA User Manual

Order No: PAPAMY1305056CE

Air Conditioner

Indoor Unit Outdoor Unit

CS-XE9PKUA

CS-XE12PKUA

CU-XE9PKUA

CU-XE12PKUA

Destination

U.S.A.

Canada

This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the products dealt with in this service information by anyone else could result in serious injury or death.

WARNING

In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.

PRECAUTION OF LOW TEMPERATURE

© Panasonic Corporation 2013.

TABLE OF CONTENTS

1. Safety Precautions ............................................. 3

2. Specifications ..................................................... 5

3. Features ............................................................. 11

4. Location of Controls and Components .......... 12

4.1 Indoor Unit .................................................. 12

4.2 Outdoor Unit ............................................... 12

4.3 Remote Control .......................................... 12

5. Dimensions ....................................................... 13

5.1 Indoor Unit .................................................. 13

5.2 Outdoor Unit ............................................... 14

6. Refrigeration Cycle Diagram ........................... 15

7. Block Diagram .................................................. 16

8. Wiring Connection Diagram ............................ 17

8.1 Indoor Unit .................................................. 17

8.2 Outdoor Unit ............................................... 18

9. Electronic Circuit Diagram .............................. 19

9.1 Indoor Unit .................................................. 19

9.2 Outdoor Unit ............................................... 20

10. Printed Circuit Board ....................................... 21

15. Troubleshooting Guide ....................................50

15.1 Refrigeration Cycle System ........................50

15.2 Breakdown Self Diagnosis Function ...........52

15.3 Error Codes Table ......................................53

15.4 Self-diagnosis Method ................................55

16. Disassembly and Assembly Instructions ......82

16.1 Indoor Electronic Controllers, Cross Flow Fan

and Indoor Fan Motor Removal

Procedures ...................................................82

16.2 Outdoor Electronic Controller Removal

Procedure ....................................................87

17. Technical Data ..................................................88

17.1 Operation Characteristics ...........................88

17.2 Sensible Capacity Chart .............................96

18. Exploded View and Replacement Parts

List .....................................................................97

18.1 Indoor Unit ..................................................97

18.2 Outdoor Unit ............................................ 100

10.1 Indoor Unit .................................................. 21

10.2 Outdoor Unit ............................................... 23

11. Installation Instruction ..................................... 24

11.1 Select the Best Location ............................. 24

11.2 Indoor Unit .................................................. 25

11.3 Outdoor Unit ............................................... 29

12. Operation Control ............................................. 32

12.1 Basic Function ............................................ 32

12.2 Indoor Fan Motor Operation ....................... 33

12.3 Outdoor Fan Motor Operation .................... 34

12.4 Airflow Direction .......................................... 35

12.5 Quiet operation (Cooling Mode/Cooling area

of Dry Mode) ............................................... 36

12.6 Quiet Operation (Heating) .......................... 36

12.7 Powerful Mode Operation ........................... 37

12.8 Timer Control .............................................. 37

12.9 Auto Restart Control ................................... 37

12.10 Indication Panel .......................................... 37

12.11 Room Freeze Protection Function (RFP)

Operation .................................................... 38

12.12 AUTO COMFORT and ECONAVI

Operation .................................................... 38

13. Protection Control ............................................ 44

13.1 Protection Control For All Operations ......... 44

13.2 Protection Control For Cooling & Soft Dry

Operation .................................................... 46

13.3 Protection Control For Heating

Operation .................................................... 47

14. Servicing Mode ................................................. 48

14.1 Auto OFF/ON Button .................................. 48

14.2 Remote Control Button ............................... 49

2

1. Safety Precautions

 Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.
 Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and

main circuit for the model installed.

 The caution items stated here must be followed because these important contents are related to safety. The meaning of each

indication used is as below. Incorrect installation or servicing due to ignoring of the instruction will cause harm or damage,
and the seriousness is classified by the following indications.

This indication shows the possibility of causing death or serious injury.

WARNING

CAUTION

 The items to be followed are classified by the symbols:

 Carry out test run to confirm that no abnormality occurs after the servicing. Then, explain to user the operation, care and

maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.

This indication shows the possibility of causing injury or damage to properties.

This symbol denotes item that is PROHIBITED from doing.

WARNING

1. Do not modify the machine, part, material during repairing service.

2. If wiring unit is supplied as repairing part, do not repair or connect the wire even only partial wire break. Exchange the whole wiring unit.

3. Do not wrench the fasten terminal. Pull it out or insert it straightly.

Engage dealer or specialist for installation and servicing. If installation of servicing done by the user is defective, it will cause water

4.
leakage, electrical shock or fire.

5. Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electric shock or fire.

Use the attached accessories parts and specified parts for installation and servicing. Otherwise, it will cause the set to fall, water leakage,

6.
fire or electrical shock.

Install at a strong and firm location which is able to withstand the set’s weight. If the strength is not enough or installation is not properly

7.
done, the set will drop and cause injury.

For electrical work, follow the local national wiring standard, regulation and the installation instruction. An independent circuit and single

8.
outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.

This equipment must installed with an Earth Leakage Circuit Breaker (ELCB) or Ground Fault Current Interrupter (GFCI) or Appliance

9.

Leakage Current Interrupter (ALCI) that has been certified by an NRTL Certified Testing Agency and that is suitable for the voltages and
amperages involved. Otherwise, if may cause electrical shock and fire in case of equipment breakdown.
Do not use joint cable for indoor / outdoor connection cable. Use the specified Indoor/Outdoor connection cable, refer to installation

10.

instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor / outdoor connection. Clamp the cable so that
no external force will be acted on the terminal. If connecting or fixing is not perfect, it will cause heat up or fire at the connection.

Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will

11.
cause heat-up or fire at the connection point of terminal, fire or electrical shock.

When install or relocate air conditioner, do not let any substance other than the specified refrigerant, eg. air etc. mix into refrigeration

12.
cycle (piping). (Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion, injury etc.).

Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit at veranda of high rise building, child may climb

13.
up to outdoor unit and cross over the handrail and causing accident.

This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and

14.
telephone. Otherwise, it may cause electric shock in case equipment breakdown or insulation breakdown.

15. Keep away from small children, the thin film may cling to nose and mouth and prevent breathing.

Do not use unspecified cord, modified cord, joint cord or extension cord for power supply cord. Do not share the single outlet with

16.
other electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or fire.

Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the

17.
flare may break and cause refrigerant gas leakage.

For R410A model, use piping, flare nut and tools which is specified for R410A refrigerant. Using of existing (R22) piping, flare nut
and tools may cause abnormally high pressure in the refrigerant cycle (piping), and possibly result in explosion and injury.

18.
Thickness or copper pipes used with R410A must be more than 1/32" (0.8 mm). Never use copper pipes thinner than 1/32"

(0.8 mm). It is desirable that the amount of residual oil is less than 0.0008 oz/ft (40 mg/10 m).
During installation, install the refrigerant piping properly before run the compressor. (Operation of compressor without fixing refrigeration

19.

piping and valves at opened condition will caused suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion,
injury etc).

3

WARNING

During pump down operation, stop the compressor before remove the refrigeration piping. (Removal of compressor while compressor is

20.
operating and valves are opened will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.)

After completion of installation or service, confirm there is no leakage or refrigerant gas. It may generate toxic gas when the refrigerant

21.
contacts with fire.

22. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when refrigerant contacts with fire.

23. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.

24. Must not use other parts except original parts described in catalog and manual.

25. Using of refrigerant other than the specified type may cause product damage, burst and injury etc.

CAUTION

Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of

1.
the unit, it may cause fire.

Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the

2.
furniture.

Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare may

3.
break and cause refrigerant gas leakage.

4. Do not touch outdoor unit air inlet and aluminium fin. It may cause injury.

5. Select an installation location which is easy for maintenance.

Pb free solder has a higher melting point than standard solder; typically the melting point is 50°F – 70°F (30°C – 40°C) higher.

6.

Please use a high temperature solder iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C).
Pb free solder will tend to splash when heated too high (about 1100°F / 600°C).

Power supply connection to the room air conditioner.
Power supply cord shall be UL listed or CSA approved 3 conductor with minimum AWG14 wires.
Power supply point should be in an easily accessible place for power disconnection in case of emergency.

7.
In some countries, permanent connection of this air conditioner to the power supply is prohibited.

Fix power supply connection to a circuit breaker for permanent connection.
Use NRTL approved fuse or circuit breaker (rating refers to name plate) for permanent connection.

Do not release refrigerant during piping work for installation, servicing, reinstallation and during repairing a refrigerant parts.

8.
Take care of the liquid refrigerant, it may cause frostbite.

9. Installation or servicing work: It may need two people to carry out the installation or servicing work.

10. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.

11. Do not sit or step on the unit, you may fall down accidentally.

Do not touch the sharp aluminium fins or edges of metal parts.

12.

If you are required to handle sharp parts during installation or servicing, please wear hand glove.
Sharp parts may cause injury.

4

2. Specifications

Model

Performance Test Condition ARI

Power Supply

Min. Mid. Max. Min. Mid. Max.

Capacity

Running Current A – 2.80 – – 2.50 –

Input Power W 150 540 850 150 540 850

Annual Consumption kWh – – – – – –

Cooling

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Heating

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

17°F: Rated Capacity (BTU/h) / I. Power (W) 8000 / 750

Compressor

EER

Power Factor % – 93 – – 94 –

Capacity

Running Current A – 4.50 – – 4.00 –

Input Power W 150 860 1.65k 150 860 1.65k

COP

Power Factor % – 92 – – 93 –

5°F: Max. Capacity (BTU/h) 11000

Max Current (A) / Max Input Power (W) 7.8 / 1.71k

Starting Current (A) 4.50

Type Hermetic Motor (Rotary)

Motor Type Brushless (4 poles)

Output Power W 700

Indoor CS-XE9PKUA

Outdoor CU-XE9PKUA

Phase, Hz Single, 60

V 208 230

kW 0.83 2.55 3.51 0.83 2.55 3.51

BTU/h 2800 8700 12000 2800 8700 12000

kcal/h – – – – – –

W/W 5.53 4.72 4.13 5.53 4.72 4.13

BTU/hW 18.65 16.10 14.10 18.65 16.10 14.10

kcal/hW – – – – – –

dB-A 42 / 25 / 20 42 / 25 / 20

Power Level dB 58 / – / – 58 / – / –

dB-A 48 / – / – 48 / – / –

Power Level dB 63 / – / – 63 / – / –

kW 0.89 3.51 5.29 0.89 3.51 5.29

BTU/h 3000 12000 18000 3000 12000 18000

kcal/h – – – – – –

W/W 5.93 4.08 3.21 5.93 4.08 3.21

BTU/hW 20.00 13.95 10.90 20.00 13.95 10.90

kcal/hW – – – – – –

dB-A 42 / 29 / 26 42 / 29 / 26

Power Level dB 58 / – / – 58 / – / –

dB-A 48 / – / – 48 / – / –

Power Level dB 63 / – / – 63 / – / –

5

Model

Indoor CS-XE9PKUA

Outdoor CU-XE9PKUA

Type Cross-Flow Fan

Material ASG33

Motor Type DC / Transistor (8-poles)

Input Power W 47.0

Output Power W 40

QLo

Indoor Fan

Speed

SHi

Cool rpm 570

Heat rpm 740

Cool rpm 660

Lo

Heat rpm 810

Cool rpm 850

Me

Heat rpm 1000

Cool rpm 1040

Hi

Heat rpm 1190

Cool rpm 1140

Heat rpm 1290

Type Propeller Fan

Material PP

Motor Type DC (8-poles)

Input Power W –

Outdoor Fan

Output Power W 40

Speed Hi

Cool rpm 600

Heat rpm 670

Min Circuit Ampacity 15.0

Max. Overcurrent Protection 15.0

SEER / HSPF 28.50 / 12.50

Moisture Removal L/h (Pt/h) 0.5 (1.3)

3

/min (ft3/min) 5.0 (170)

3

/min (ft3/min) 6.3 (220)

3

/min (ft3/min) 8.9 (310)

3

/min (ft3/min) 11.5 (405)

3

/min (ft3/min) 12.8 (450)

3

/min (ft3/min) 34.6 (1220) 34.6 (1220)

Indoor
Airflow

Outdoor

Airflow

QLo

Lo

Me

Hi

SHi

Hi

Cool m

Heat m3/min (ft3/min) 7.4 (260)

Cool m

Heat m3/min (ft3/min) 8.3 (290)

Cool m

Heat m3/min (ft3/min) 10.9 (380)

Cool m

Heat m3/min (ft3/min) 13.5 (475)

Cool m

Heat m3/min (ft3/min) 14.9 (520)

Cool m

Heat m3/min (ft3/min) 39.1 (1380) 39.1 (1380)

Control Device Expansion Valve

Refrigeration

Cycle

Refrigerant Oil cm3 FV50S (320)

Refrigerant Type g (oz) R410A, 1.15k (40.6)

Height(I/D / O/D) mm (inch) 295 (11-5/8) / 695 (27-3/8)

Dimension

Width (I/D / O/D) mm (inch) 870 (34-9/32) / 875 (34-15/32)

Depth (I/D / O/D) mm (inch) 255 (10-1/16) / 320 (12-5/8)

Weight Net (I/D / O/D) kg (lb) 11 (24) / 44 (97)

6

Model

Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 9.52 (3/8)

Standard length m (ft) 7.5 (24.6)

Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6)

I/D & O/D Height different m (ft) 15.0 (49.2)

Piping

Additional Gas Amount g/m (oz/ft) 20 (0.2)

Length for Additional Gas m (ft) 7.5 (24.6)

Drain Hose

Indoor Heat

Exchanger

Outdoor

Heat

Exchanger

Air Filter

Power Supply Cord A Nil

Indoor

Operation

Range

Outdoor

Operation

Range

1. Cooling capacities are based on indoor temperature of 80°F (26.7°C) DRY BULB, 67°F (19.4°C) WET BULB and outdoor air temperature of
95°F (35°C) DRY BULB, 75°F (23.8°C) WET BULB.

2. Heating capacities are based on indoor temperature of 70°F (21.1°C) DRY BULB, 60°F (15.6°C) WET BULB and outdoor air temperature of
47°F (8.3°C) DRY BULB, 43°F (6.1°C) WET BULB.

3. 17°F (-8.3°C) Heating Capacity and Input Power measured at 230V, indoor temperature 70°F (21.1°C), outdoor 17/15°F (-8.3/-9.4°C).

4. 5°F (-15°C) Heating Capacity measured at 230V, indoor temperature 70°F (21.1°C), outdoor 5°F (-15°C/-).

5. Specifications are subjected to change without prior notice for further improvement.

Inner Diameter mm (inch) 16.7 (5/8)

Length mm(inch) 650 (25-5/8)

Fin Material Aluminium (Pre Coat)

Fin Type Slit Fin

Row × Stage × FPI 2 × 17 × 21

Size (W × H × L) mm (inch) 636.5 × 357 × 25.4 (25-1/16 × 14-1/16 × 1)

Fin Material Aluminium / Blue Coated

Fin Type Corrugated Fin

Row × Stage × FPI 2 × 31 × 18

Size (W × H × L) mm (inch) 36.4 × 651 × 854.5:824.5 (1-7/16 × 25-11/16 × 33-11/16:32-15/32)

Material Polypropelene

Type One-touch

Power Supply Outdoor

Thermostat Electronic Control

Protection Device Electronic Control

Dry Bulb Wet Bulb

Cooling

Heating

Cooling

Heating

Indoor CS-XE9PKUA

Outdoor CU-XE9PKUA

Maximum °F/°C 89.6/32 73.4/23

Minimum °F/°C 60.8/16 51.8/11

Maximum °F/°C 86.0/30 –/–

Minimum °F/°C 60.8/16 –/–

Maximum °F/°C 114.8/46 78.8/26

Minimum °F/°C 0.0/-18 –/–

Maximum °F/°C 75.2/24 64.4/18

Minimum °F/°C 0.0/-18 -2.2/-19

7

Model

Performance Test Condition ARI

Power Supply

Min. Mid. Max. Min. Mid. Max.

Capacity

Running Current A – 4.20 – – 3.80 –

Input Power W 150 800 1.05k 150 800 1.05k

Annual Consumption kWh – – – – – –

Cooling

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Heating

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

17°F: Rated Capacity (BTU/h) / I. Power (W) 10400 / 1.05k

Compressor

EER

Power Factor % – 92 – – 92 –

Capacity

Running Current A – 5.80 – – 5.20 –

Input Power W 150 1.15k 2.10k 150 1.15k 2.10k

COP

Power Factor % – 95 – – 96 –

5°F: Max. Capacity (BTU/h) 12500

Max Current (A) / Max Input Power (W) 9.5 / 2.15k

Starting Current (A) 5.80

Type Hermetic Motor (Rotary)

Motor Type Brushless (4 poles)

Output Power W 700

Indoor CS-XE12PKUA

Outdoor CU-XE12PKUA

Phase, Hz Single, 60

V 208 230

kW 0.83 3.36 4.10 0.83 3.36 4.10

BTU/h 2800 11500 14000 2800 11500 14000

kcal/h – – – – – –

W/W 5.53 4.20 3.90 5.53 4.20 3.90

BTU/hW 18.65 14.35 13.30 18.65 14.35 13.30

kcal/hW – – – – – –

dB-A 45 / 28 / 20 45 / 28 / 20

Power Level dB 61 / – / – 61 / – / –

dB-A 49 / – / – 49 / – / –

Power Level dB 64 / – / – 64 / – / –

kW 0.89 4.05 6.72 0.89 4.05 6.72

BTU/h 3000 13800 23000 3000 13800 23000

kcal/h – – – – – –

W/W 5.93 3.52 3.20 5.93 3.52 3.20

BTU/hW 20.00 12.00 10.95 20.00 12.00 10.95

kcal/hW – – – – – –

dB-A 44 / 35 / 32 44 / 35 / 32

Power Level dB 60 / – / – 60 / – / –

dB-A 49 / – / – 49 / – / –

Power Level dB 64 / – / – 64 / – / –

8

Model

Indoor CS-XE12PKUA

Outdoor CU-XE12PKUA

Type Cross-Flow Fan

Material ASG33

Motor Type DC / Transistor (8-poles)

Input Power W 47.0

Output Power W 40

Cool rpm 570

Heat rpm 890

Cool rpm 710

Lo

Heat rpm 970

Cool rpm 1010

Heat rpm 1110

Cool rpm 1300

Hi

Heat rpm 1250

Cool rpm 1350

Heat rpm 1350

Indoor Fan

Speed

QLo

Me

SHi

Type Propeller Fan

Material PP

Motor Type DC (8-poles)

Input Power W –

Outdoor Fan

Output Power W 40

Speed Hi

Cool rpm 600

Heat rpm 750

Min Circuit Ampacity 15.0

Max. Overcurrent Protection 20.0

SEER / HSPF 25.50 / 12.00

Moisture Removal L/h (Pt/h) 1.1 (2.3)

3

/min (ft3/min) 5.0 (170)

3

/min (ft3/min) 6.9 (240)

3

/min (ft3/min) 11.1 (390)

3

/min (ft3/min) 15.0 (530)

3

/min (ft3/min) 15.7 (550)

3

/min (ft3/min) 35.9 (1265) 35.9 (1265)

Indoor
Airflow

Outdoor

Airflow

QLo

Lo

Me

Hi

SHi

Hi

Cool m

Heat m3/min (ft3/min) 9.4 (330)

Cool m

Heat m3/min (ft3/min) 10.5 (370)

Cool m

Heat m3/min (ft3/min) 12.4 (430)

Cool m

Heat m3/min (ft3/min) 14.3 (505)

Cool m

Heat m3/min (ft3/min) 15.7 (550)

Cool m

Heat m3/min (ft3/min) 44.0 (1555) 44.0 (1555)

Control Device Expansion Valve

Refrigeration

Cycle

Refrigerant Oil cm3 FV50S (320)

Refrigerant Type g (oz) R410A, 1.15k (40.6)

Height(I/D / O/D) mm (inch) 295 (11-5/8) / 695 (27-3/8)

Dimension

Width (I/D / O/D) mm (inch) 870 (34-9/32) / 875 (34-15/32)

Depth (I/D / O/D) mm (inch) 255 (10-1/16) / 320 (12-5/8)

Weight Net (I/D / O/D) kg (lb) 11 (24) / 44 (97)

9

Model

Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 12.70 (1/2)

Standard length m (ft) 7.5 (24.6)

Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6)

I/D & O/D Height different m (ft) 15.0 (49.2)

Piping

Additional Gas Amount g/m (oz/ft) 20 (0.2)

Length for Additional Gas m (ft) 7.5 (24.6)

Drain Hose

Indoor Heat

Exchanger

Outdoor

Heat

Exchanger

Air Filter

Power Supply Cord A Nil

Indoor

Operation

Range

Outdoor

Operation

Range

1. Cooling capacities are based on indoor temperature of 80°F (26.7°C) DRY BULB, 67°F (19.4°C) WET BULB and outdoor air temperature of
95°F (35°C) DRY BULB, 75°F (23.8°C) WET BULB.

2. Heating capacities are based on indoor temperature of 70°F (21.1°C) DRY BULB, 60°F (15.6°C) WET BULB and outdoor air temperature of
47°F (8.3°C) DRY BULB, 43°F (6.1°C) WET BULB.

3. 17°F (-8.3°C) Heating Capacity and Input Power measured at 230V, indoor temperature 70°F (21.1°C), outdoor 17/15°F (-8.3/-9.4°C).

4. 5°F (-15°C) Heating Capacity measured at 230V, indoor temperature 70°F (21.1°C), outdoor 5°F (-15°C/-).

5. Specifications are subjected to change without prior notice for further improvement.

Inner Diameter mm (inch) 16.7 (5/8)

Length mm (inch) 650 (25-5/8)

Fin Material Aluminium (Pre Coat)

Fin Type Slit Fin

Row × Stage × FPI 2 × 17 × 21

Size (W × H × L) mm (inch) 636.5 × 357 × 25.4 (25-11/16 × 14-1/16 × 1)

Fin Material Aluminium / Blue Coated

Fin Type Corrugated Fin

Row × Stage × FPI 2 × 31 × 18

Size (W × H × L) mm (inch) 36.4 × 651 × 854.5:824.5 (1-7/16 × 25-11/16 × 33-11/16:32-15/32)

Material Polypropelene

Type One-touch

Power Supply Outdoor

Thermostat Electronic Control

Protection Device Electronic Control

Dry Bulb Wet Bulb

Cooling

Heating

Cooling

Heating

Indoor CS-XE12PKUA

Outdoor CU-XE12PKUA

Maximum °F/°C 89.6/32 73.4/23

Minimum °F/°C 60.8/16 51.8/11

Maximum °F/°C 86.0/30 –/–

Minimum °F/°C 60.8/16 –/–

Maximum °F/°C 114.8/46 78.8/26

Minimum °F/°C 0.0/-18 –/–

Maximum °F/°C 75.2/24 64.4/18

Minimum °F/°C 0.0/-18 -2.2/-19

10

3. Features

 Inverter Technology

o Wider output power range
o Energy saving
o Quick Cooling
o Quick Heating
o More precise temperature control

 Environment Protection

o Non-ozone depletion substances refrigerant (R410A)

 Long Installation Piping

o Long piping up to 65.6ft (20 meters) during single split connection only

 Easy to use remote control

 Quality Improvement

o Random auto restart after power failure for safety restart operation
o Gas leakage protection
o Prevent compressor reverse cycle
o Inner protector to protect compressor
o Noise prevention during soft dry operation

 Operation Improvement

o Quiet mode to reduce the indoor unit operating sound
o Powerful mode to reach the desired room temperature quickly
o 24-hour timer setting
o RFP (Room Freeze Protection) operation is designed to circulate the air in High mode for monitoring the

temperature. Used in spaces that are unoccupied during the winter, for the purpose of protecting any
equipment or appliances which may be destroyed as a result of freezing temperature.

 Serviceability Improvement

o Breakdown Self Diagnosis function

`

11

4. Location of Controls and Components

4.1 Indoor Unit

4.2 Outdoor Unit

4.3 Remote Control

12

5. Dimensions

5.1 Indoor Unit

13

5.2 Outdoor Unit

14

6. Refrigeration Cycle Diagram

15

7. Block Diagram

16

8. Wiring Connection Diagram

8.1 Indoor Unit

17

8.2 Outdoor Unit

Resistance of Compressor Windings

MODEL CU-XE9/12PK

CONNECTION 5RS102XHB21 (Ω)

U-V 1.741

U-W 1.765

V-W 1.711

Note: Resistance at 20°C of ambient temperature.

18

9. Electronic Circuit Diagram

9.1 Indoor Unit

19

9.2 Outdoor Unit

20

10. Printed Circuit Board

10.1 Indoor Unit

10.1.1 Main Printed Circuit Board

10.1.2 Indicator Printed Circuit Board

21

10.1.3 Receiver Printed Circuit Board

10.1.4 Comparator Printed Circuit Board

10.1.5 Human Activity Sensor Printed Circuit Board

22

10.2 Outdoor Unit

10.2.1 Main Printed Circuit Board

23

11. Installation Instruction

11.1 Select the Best Location

11.1.1 Indoor Unit

 Do not install the unit in excessive oil fume area

such as kitchen, workshop and etc.

 There should not be any heat source or steam

near the unit.

 There should not be any obstacles blocking the air

circulation.

 A place where air circulation in the room is good.
 A place where drainage can be easily done.
 A place where noise prevention is taken into

consideration.

 Do not install the unit near the door way.
 Ensure the spaces indicated by arrows from the

wall, ceiling, fence or other obstacles.

 Mount with the lowest moving parts at least 8ft

(2.4 m) above floor or grade level.

11.1.2 Outdoor Unit

 If an awning is built over the unit to prevent direct

sunlight or rain, be careful that heat radiation from
the condenser is not obstructed.

 There should not be any animal or plant which

could be affected by hot air discharged.

 Keep the spaces indicated by arrows from wall,

ceiling, fence or other obstacles.

 Do not place any obstacles which may cause a

short circuit of the discharged air.

 If piping length is over the [piping length for

additional gas], additional refrigerant should be
added as shown in the table.

 Recommended installation height for outdoor unit

should be above the seasonal snow level.

Example: For XE9PKUA
If the unit is installed at 32.8 ft (10 m) distance, the
quantity of additional refrigerant should be 1.64 oz (50

g) .... (32.8 - 24.6) ft x 0.2 oz/ft = 1.64 oz. ((10-7.5) m

x 20 g/m = 50 g)

11.1.3 Indoor/Outdoor Unit Installation
Diagram

24

11.2 Indoor Unit

The mounting wall shall be strong and solid enough to prevent it from vibration.

Model

XE9PKUA, XE12PKUA

c d e f g h

19-9/32"

(490 mm)

3-7/32"

(82 mm)

Dimension

17-9/32"

(439 mm)

17"

(432 mm)

1-11/16"
(43 mm)

The center of installation plate should be at more than

The distance from installation plate edge to ceiling should more than

From installation plate left edge to unit’s left side is

From installation plate right edge to unit’s right is

B : For left side piping, piping connection for liquid should be about ○5 from this line.

○

: For left side piping, piping connection for gas should be about

1 at right and left of the wall.

○

2.

○

3.

○

4.

○

6 from this line.

○

1 Mount the installation plate on the wall with 5 screws or more (at least 5 screws).

(If mounting the unit on the concrete wall, consider using anchor bolts.)
o Always mount the installation plate horizontally by aligning the marking-off line with the thread and using

a level gauge.

2 Drill the piping plate hole with ø2-3/4" (ø70 mm) hole-core drill.

o Line according to the left and right side of the installation plate. The meeting point of the extended line is

the center of the hole. Another method is by putting measuring tape at position as shown in the diagram
above. The hole center is obtained by measuring the distance namely 5-1/16" (128 mm) for left and right
hole respectively.

o Drill the piping hole at either the right or the left and the hole should be slightly slanting to the outdoor

side.

3-3/4"

(95 mm)

11.2.1 To Drill a Hole in the Wall and
Install a Sleeve of Piping

1 Insert the piping sleeve to the hole.
2 Fix the bushing to the sleeve.
3 Cut the sleeve until it extrudes about 19/32"

(15 mm) from the wall.

CAUTION

When the wall is hollow, please be sure to use the
sleeve for tube assembly to prevent dangers
caused by mice biting the connection cable.

4 Finish by sealing the sleeve with putty or

caulking compound at the final stage.

25

11.2.2 Indoor Unit Installation

11.2.2.1 For the right rear piping

11.2.2.2 For the right bottom piping

11.2.2.3 For the embedded piping

(This can be used for left rear piping and bottom
piping also.)

26

27

11.2.3 Connect the Cable to the Indoor Unit

1 The inside and outside connection cable can

be connected without removing the front grille.

2 Unscrew the conduit cover and fix the conduit

connector to conduit cover with lock nut, then
secure it against chassis.

3 Connection cable between indoor unit and

outdoor unit should be UL listed or CSA
approved 4 conductor wires minimum AWG16
in accordance with local electric codes.
o Ensure the colour of wires of outdoor unit

and terminal number are the same as the
indoor's respectively.

o Earth lead wire shall be Yellow/Green

(Y/G) in colour and shall be longer than
other lead wires as shown in the figure
for electrical safety in case of slipping.

11.2.3.1 Wire Stripping and Connecting Requirement

28

11.3 Outdoor Unit

11.3.1 Install the Outdoor Unit

 After selecting the best location, start installation according to Indoor/Outdoor Unit Installation Diagram.

1 Fix the unit on concrete or rigid frame firmly and horizontally with a bolt nut ø13/32" (ø10 mm).
2 When installing at roof, please consider strong wind and earthquake.

Please fasten the installation stand firmly with bolt or nails.

AB

C

D

11.3.2 Connect the Piping

11.3.2.1 Connecting the Piping to
Indoor

Please make flare after inserting flare nut (locate at
joint portion, of tube assembly) onto the copper pipe.
(In case of using long piping)
Connect the piping
 Align the center of piping and sufficiently tighten

the flare nut with fingers.

 Further tighten the flare nut with torque wrench in

specified torque as stated in the table.

Model A B C D

XE9PKUA,
XE12PKUA

24-1/8"

(613 mm)

5-5/32"

(131 mm)

5/8"

(16 mm)

Do not over tighten, over tightening may cause gas leakage

Piping size Torque

1/4" (6.35 mm) 13.3 Ibf.ft [18N•m (1.8 kgf.m)]

3/8" (9.52 mm) 31.0 Ibf.ft [42 N•m (4.3 kgf.m)]

1/2" (12.7 mm) 40.6 Ibf.ft [55 N•m (5.6 kgf.m)]

5/8" (15.88 mm) 47.9 Ibf.ft [65 N•m (6.6 kgf.m)]

3/4" (19.05 mm) 73.8 Ibf.ft [100 N•m (10.2 kgf.m)]

14-3/16"

(360.5 mm)

11.3.2.2 Connecting the Piping to
Outdoor

Decide piping length and then cut by using pipe cutter.
Remove burrs from cut edge.
Make flare after inserting the flare nut (located at valve)
onto the copper pipe.
Align center of piping to valve and then tighten with
torque wrench to the specified torque as stated in the
table.

Spanner
or Wrench

11.3.2.3 Gas leak checking

Pressure test to system to 400 PSIG with dry nitrogen, in stages. Thoroughly leak check the system.
If the pressure holds, release the nitrogen and proceed to section 11.3.3.

To r qu e
wrench

29

11.3.3 Evacuation of the Equipment

WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND
PIPES in the following procedure.

1 Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way

valve.
2 Connect the micron gauge between vacuum pump and service port of outdoor units.
3 Turn on the power switch of the vacuum pump and make sure that connect digital micron gauge and to pull

down to a value of 500 microns.
4 To make sure micron gauge a value 500 microns and close the low side valve of the charging set and turn off

the vacuum pump.
5 Disconnect the vacuum pump house from the service port of the 3-way valve.
6 Tighten the service port caps of the 3-way valve at a torque of 13.3 Ibf.ft (18 N•m) with a torque wrench.
7 Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “Open”

using a hexagonal wrench (5/32" (4 mm)).
8 Mount valve caps onto the 2-way valve and the 3-way valve.

o Be sure to check for gas leakage.

 If micron gauge value does not descend 500 microns, take the following measures:

- If the leak stops when the piping connections are tightened further, continue working from step e.

- If the leak does not stop when the connections are retightened, repair location of leak.

- Do not release refrigerant during piping work for installation and reinstallation.

- Be careful with the liquid refrigerant, it may cause frostbite.

11.3.4 Connect the Cable to the Outdoor Unit

1 Remove control board cover (Resin and

Metal).
2 Remove particular plate.
3 Remove plugs.
4 Fix the conduit connectors to the knockout

holes with lock-nuts, then secure them against

the side panel.
5 All wires pass through conduits & particular

plate’s opening hole.
6 Connecting wire between indoor unit and

outdoor unit should be UL listed or CSA

approved 4 conductor wires minimum AWG16

in accordance with local electric codes.
7 Wire connection to the power supply

(208/230V 60Hz) through circuit breaker.

o Connect the UL listed or CSA approved

wires minimum AWG14 to the terminal
board, and connect the other end of the
wires to ELCB/ GFCI.

8 Connect the power supply cord and

connecting wire between indoor unit and

outdoor unit according to the diagram below.

30

9 Secure the wire onto the control board with

the holder (clamper).

10 After completing wiring connections, reattach

the particular plate and control board cover
(metal and resin) to the original position with
the screws.

11 For wire stripping and connection

requirement, refer to instruction 11.2.3 of
indoor unit.

WARNING

This equipment must be properly earthed.

 Earth lead wire shall be Yellow/Green (Y/G) in

colour and should be longer than other lead wires
as shown in the figure for electrical safety in case
of slipping.

11.3.5 Piping Insulation

1 Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation

Diagram. Please wrap the insulated piping end to prevent water from going inside the piping.

2 If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by

using POLY-E FOAM with thickness 1/4" (6 mm) or above.

11.3.5.1 Cutting and flaring the piping

1 Please cut using pipe cutter and then remove the burrs.
2 Remove the burrs by using reamer. If burrs are not removed, gas leakage may be caused. Turn the piping

end down to avoid the metal powder entering the pipe.

3 Please make flare after inserting the flare nut onto the copper pipes.

31

12. Operation Control

12.1 Basic Function

Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time
passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating
mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and
performing temperature shifting. The compressor at outdoor unit is operating following the frequency instructed by
the microcomputer at indoor unit that judging the condition according to internal setting temperature and intake air
temperature.

12.1.1 Internal Setting Temperature

Once the operation starts, remote control setting temperature will be taken as base value for temperature shifting
processes. These shifting processes are depending on the air conditioner settings and the operation environment.
The final shifted value will be used as internal setting temperature and it is updated continuously whenever the
electrical power is supplied to the unit.

12.1.2 Cooling Operation

12.1.2.1 Thermostat control

 Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -2.7°F (-1.5°C) continue for

3 minutes.

 When compressor is OFF (Thermostat OFF) and AUTO FAN is set, the fan will stop periodically.
 Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature >

Compressor OFF point.

12.1.3 Soft Dry Operation

12.1.3.1 Thermostat control

 Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -3.6°F (-2.0°C) continue for

3 minutes.

 When compressor is OFF (Thermostat OFF) and AUTO FAN is set, the fan will stop periodically.
 Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature >

Compressor OFF point.

12.1.4 Heating Operation

12.1.4.1 Thermostat control

 Compressor is OFF when Intake Air Temperature - Internal Setting Temperature > +3.6°F (+2.0°C) continue for

3 minutes.

 Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature <

Compressor OFF point.

32

12.1.5 Automatic Operation

 This mode can be set using remote control and the operation is decided by remote control setting temperature,

remote control operation mode and indoor intake air temperature.

 During operation mode judgment, indoor fan motor (with speed of Lo-) is running for 30 seconds to detect the

indoor intake air temperature.

 Every 10 minutes, the indoor temperature is judged.
 For the 1st judgment

o If indoor intake temperature - remote control setting temperature ≥ 3.6°F (2°C), COOL mode is decided.
o If -3.6°F (-2°C) ≤ indoor intake temperature - remote control setting temperature < 3.6°F(2°C), DRY mode is

decided.

o If indoor intake temperature - remote control setting temperature < -3.6°F (-2°C), HEAT mode is decided.

 For the 2nd judgment onwards

o If indoor intake temperature - remote control setting temperature ≥ 5.4°F (3°C), if previous operate in DRY

mode, then continue in DRY mode. otherwise COOL mode is decided.

o If -3.6°F (-2°C) ≤ indoor intake temperature - remote control setting temperature < 5.4°F (3°C), maintain with

previous mode.

o If indoor intake temperature - remote control setting temperature < -3.6°F (-2°C), HEAT mode is decided.

12.1.6 Fan Operation

 Fan Operation is used to circulate air in a room.
 During operation, indoor fan run continuously but outdoor fan and compressor stop.
 Temperature setting is not applicable.

12.2 Indoor Fan Motor Operation

12.2.1 Basic Rotation Speed (rpm)

A. Basic Rotation Speed (rpm)

i. Manual Fan Speed
[Cooling, Dry]
 Fan motor’s number of rotation is determined according to remote control setting.

Remote control ○ ○ ○ ○ ○

Tab Hi Me+ Me Me- Lo

[Heating]
 Fan motor’s number of rotation is determined according to remote control setting.

Remote control ○ ○ ○ ○ ○

Tab SHi Me+ Me Me- Lo

33

ii. Auto Fan Speed
[Cooling, Dry]

 According to room temperature and setting temperature, indoor fan speed is determined automatically.
 When set temperature is not achieved, the indoor fan will operate according to pattern below.

 When set temperature achieved, the indoor fan speed will be fixed. When thermostat off, the fan stop periodically.

[Heating]
 According to indoor pipe temperature, automatic heating fan speed is determined as follows.

B. Feedback control

 Immediately after the fan motor started, feedback control is performed once every second.
 During fan motor on, if fan motor feedback ≥ 2550 rpm or < 50 rpm continue for 10 seconds, then fan motor error

counter increase, fan motor is then stop and restart. If the fan motor counter becomes 7 times, then H19 - fan
motor error is detected. Operation stops and cannot on back.

12.3 Outdoor Fan Motor Operation

 It starts when compressor starts operation and it stops 30 seconds after compressor stops operation.

 During cooling operation, and outdoor ambient temperature is below 46.4°F (8°C), outdoor fan speed will be

controlled according to outdoor piping temperature as following:

34

OD Pipe Temperature

A 78.8°F (26°C)

B 91.4°F (33°C)

 During above condition, when indoor heat exchanger temperature is below 41°F (5°C), the outdoor fan will stop

according to outdoor piping temperature as following:

12.4 Airflow Direction

 There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by

vertical vanes).

 Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat

exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using
remote control).

12.4.1 Vertical Airflow

Operation Mode Airflow Direction

A 25 17

B 55 37

C 25 17

Heating

Cooling

Soft Dry

Auto with Heat

Exchanger

Temperature

Summer House 55 37

Manual 20 45 55 65 70 17 27 37 47 56

Auto 45 ~ 70 2 ~ 39

Manual 20 25 50 55 70 2 7 17 27 39

Auto 45 ~ 70 2 ~ 39

Manual 20 25 50 55 70 2 7 17 27 39

1. Automatic vertical airflow direction can be set using remote control; the vane swings up and down within the
angles as stated above. For heating mode operation, the angle of the vane depends on the indoor heat
exchanger temperature as Figure 1 below. It does not swing during fan motor stop. When the air conditioner is
stopped using remote control, the vane will shift to close position.

2. Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated above and
the positions of the vane are as Figure 2 below. When the air conditioner is stopped using remote control, the
vane will shift to close position.

Upper Vane Angle (°) Lower Vane Angle (°)

1 2 3 4 5 1 2 3 4 5

35

12.4.2 Horizontal Airflow

 The horizontal airflow direction louvers can be adjusted manually by hand.

12.5 Quiet operation (Cooling Mode/Cooling area of Dry Mode)

 Purpose

o To provide quiet cooling operation compare to normal operation.

 Control condition

o Quiet operation start condition

 When “POWERFUL/QUIET” button at remote control is pressed twice.

POWERFUL/QUIET LED illuminates.

o Quiet operation stop condition

 When one of the following conditions is satisfied, quiet operation stops:

 POWERFUL/QUIET button is pressed again.
 Stop by OFF/ON switch.
 Timer “off” activates.
 AUTO COMFORT button is pressed.
 ECONAVI button is pressed.

 When quiet operation is stopped, operation is shifted to normal operation with previous setting.
 When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.
 When operation mode is changed, quiet operation is shifted to quiet operation of the new mode.
 During quiet operation, if timer “on” activates, quiet operation maintains.
 After off, when on back, quiet operation is not memorised.

 Control contents

o Fan speed is changed from normal setting to quiet setting of respective fan speed.

Fan speed for quiet operation is reduced from setting fan speed.

12.6 Quiet Operation (Heating)

 Purpose

o To provide quiet heating operation compare to normal operation.

 Control condition

o Quiet operation start condition

 When “POWERFUL/QUIET” button at remote control is pressed.

POWERFUL/QUIET LED illuminates.

o Quiet operation stop condition

 When one of the following conditions is satisfied, quiet operation stops:

 POWERFUL/QUIET button is pressed again.
 Stop by OFF/ON switch.
 Timer “off” activates.
 AUTO COMFORT button is pressed.
 ECONAVI button is pressed.

 When quiet operation is stopped, operation is shifted to normal operation with previous setting.
 When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.
 When operation mode is changed, quiet operation is shifted to quiet operation of the new mode, except

fan mode only.

 During quiet operation, if timer “on” activates, quiet operation maintains.
 After off, when on back, quiet operation is not memorised.

 Control contents

o Fan speed manual

 Fan speed is changed from normal setting to quiet setting of respective fan speed.
 Fan speed for quiet operation is reduced from setting fan speed.

o Fan Speed Auto

 Indoor FM RPM depends on pipe temp sensor of indoor heat exchanger.

36

12.7 Powerful Mode Operation

 When the powerful mode is selected, the internal setting temperature will shift lower up to 3.6°F (2°C) (for

Cooling/Soft Dry) or higher up to 6.3°F (3.5°C) (for Heating) than remote control setting temperature for
20 minutes to achieve the setting temperature quickly.

12.8 Timer Control

 There are 2 sets of ON and OFF timer available to turn the unit ON or OFF at different preset time.
 If more than one timer had been set, the upcoming timer will be displayed and will activate in sequence.

12.8.1 ON Timer Control

 ON timer 1 and ON timer 2 can be set using remote control, the unit with timer set will start operate earlier than

the setting time.
This is to provide a comfortable environment when reaching the set ON time.

 60 minutes before the set time, indoor (at fan speed of Lo-) and outdoor fan motor start operate for 30 seconds to

determine the indoor intake air temperature and outdoor air temperature in order to judge the operation starting
time.

 From the above judgment, the decided operation will start operate earlier than the set time as shown below.

12.8.2 OFF Timer Control

OFF timer 1 and OFF timer 2 can be set using remote control, the unit with timer set will stop operate at set time.

12.9 Auto Restart Control

 When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within

three to four minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be
selected randomly) after power supply resumes.

 This type of control is not applicable during ON/OFF Timer setting.
 This control can be omitted by open the circuit of JP1 at indoor unit printed circuit board.

12.10 Indication Panel

LED POWER TIMER POWERFUL/QUIET RFP ECONAVI AUTO COMFORT

Color Green Orange Orange Green Green Green

Light ON Operation ON Timer Setting ON

Light OFF Operation OFF Timer Setting OFF

POWERFUL/QUIET

Mode ON

POWERFUL/QUIET

Mode OFF

RFP ON ECONAVI ON

RFP OFF ECONAVI OFF

Note:
 If POWER LED is blinking, the possible operation of the unit are Hot Start, during Deice operation, operation

mode judgment, or ON timer sampling.

 If Timer LED is blinking, there is an abnormality operation occurs.

AUTO COMFORT

ON

AUTO COMFORT

OFF

37

12.11 Room Freeze Protection Function (RFP) Operation

 When the RFP is selected, the unit will operate the fan at high speed for proper room temperature monitoring.

When the sensor detects that the room temperature has dropped below 46°F / 8°C, the compressor/heat pump
operation begins.

 When the room temperature reaches 50°F / 10°C, the unit shuts off, then will repeat continuously if the

temperature drops below 46°F / 8°C again.

<Disclaimer>

This function may not be performed if the unit is not energized, or under a certain condition that unit is unable to
operate such as in protection mode. Please consult with the HVAC installers or professional for details.

 The Room Freeze Protection function (RFP) cannot be used unless the unit is energized and set into the RFP

mode.

 In the advent of a power failure this mode will not function. During the RFP mode, POWERFUL OPERATION,

QUIET OPERATION and FAN SPEED selection are all disabled. Please consult with your HVAC installer or
professional for more details.

12.12 AUTO COMFORT and ECONAVI Operation

 Area of human availability, activity level and absent is judged based on pulses by using 2 infrared sensors. The

internal setting temperature shift, fan speed and horizontal airflow direction are adjusted in order to provide
comfort environment while maintain the energy saving level.

 AUTO COMFORT start condition:

o When AUTO COMFORT button is pressed.

 AUTO COMFORT stop conditions:

o When AUTO COMFORT button is pressed again.
o When unit is OFF by OFF/ON button.
o When unit is OFF when OFF TIMER activates.
o When unit is OFF by AUTO OFF/ON button at indoor unit.
o When POWERFUL, QUIET operation activates.

 ECONAVI start condition:

o When ECONAVI button is pressed.

 ECONAVI stop conditions:

o When ECONAVI button is pressed again.
o When unit is OFF by OFF/ON button.
o When unit is OFF when OFF TIMER activates.
o When unit is OFF by AUTO OFF/ON button at indoor unit.
o When POWERFUL, QUIET operation activates.

38

12.12.1 Human Activity Sensor

 Area of human availability, activity level and absent is judged based on pulses by using infrared sensor. The

internal setting temperature shift, fan speed and horizontal airflow direction are adjusted in order to provide
comfort environment while maintain the energy saving level.

 Human activity judgment is as following:

12.12.1.1 Signal Detection

 Presumption flow of human position.

o Detection outline.

39

12.12.1.2 Information Log

 The signal from Infrared sensors will be log to human activity database for further analysis.

12.12.1.3 Human Position Analysis

 According to Area of Living, frequency of activity, the system will analyze the human position away from the

indoor unit.

12.12.1.4 Human Activity Level Judgment

 Human Activity Level is judged based on the frequency of pulses detected by the infrared sensors within a

timeframe. The activity level will be categorized into High, Normal, Low level.

 When a pulse is detected within this timeframe, the status of human presence is judged.
 When there is no signal detection continues for 40 minutes or more, the status of human absence is judged.

12.12.1.5 Determination of Presence or Absence

 Human presence status shall be determined based on the human presence status of each area.
 When all area has been detected absent for more than 40 minutes then it will judge as absence.

12.12.1.6 Area of Living Classification Judgment

 The system is able to judge area of living according to human activity database, classified as following:

o (Zone I) Living Area – In front of television, dining table, etc.
o (Zone II) Walkway – Human detection is relatively less.
o (Zone III) Non-Living Area – Near windows, wall, etc.

12.12.1.7 Target Area and Position Judgment

 By default, the system will judge the indoor unit installation position according to human activities and will reset

the louver center position::

o Non-Living Area at Position A – Indoor unit installed at left side of the room.
o Non-Living Area at Position C – Indoor unit installed at right side of the room.
o Other than above – Indoor unit installed at center of the room.

 Every 4 hours, the Judgment will restart.
 Target area is judged according to human position analysis result.

12.12.1.8 Setting Temperature and Fan Speed Shift

* During low activity, fan speed 1 tap up for first 15 minutes or until set temperature is reached.
** During human absence, maximum fan speed for COOL/DRY mode is medium fan.

40

12.12.1.9 Rhythmic Temperature Wave Operation

 To further maximize the energy saving during ECONAVI or AUTO COMFORT operates at low activity level.

 Start condition

o The unit is operates in Cool or Dry mode under ECONAVI or AUTO COMFORT operation, and
o Human activity sensor detects low activity level, and
o Neuro stable zone continuously for 60 minutes.

 Stop condition

o Unit is off, or
o ECONAVI or AUTO COMFORT is off, or
o Human activity sensor detects high activity level or absent, or

 Control contents

o When all start conditions complied, set temperature will shift accordingly as following:

41

12.12.1.10 ECONAVI and AUTO COMFORT Demo Mode

 To enable ECO DEMO mode:

 To disable ECO Demo MODE:

o Transmit ECO Demo signal again.

12.12.1.11 Human Activity Sensor Abnormality

 Abnormality detection:

 Connector disconnection / Wire cut abnormality

o Sensor judge Hi level continuously for 25 seconds

 Circuit abnormality

o 70 seconds after power ON, if human activity sensor judge Lo level continuously for 25 seconds

 Error Code judgment

 When abnormality happened, internal counter increase by 1 time.
 Human activity sensor power OFF, retry after 5 seconds.
 When the human activity sensor maintains normal condition for 120 seconds, the counter reset or AC reset.
 When abnormality counter reached 4 times, H59 occurred – No TIMER indicator blinking.

 When error code happened, the unit is able to operate without AUTO COMFORT / ECONAVI.

42

12.12.1.12 Human Activity Sensor Check Mode

 To enable human activity sensor abnormality check mode:

 During ECONAVI is ON, when CHECK signal received, if either sensors has abnormality, the 4 times abnormality

counter is ignored, ECONAVI Indicator will blink immediately and error code is memorized.

 The unit could operate without ECONAVI or AUTO COMFORT.
 The ECONAVI indicator blinking could be cancelled by pressing ECONAVI button again.
 If the human activity sensor has no abnormality, the CHECK process will end and continue with normal operation.

43

13. Protection Control

13.1 Protection Control For All Operations

13.1.1 Restart Control (Time Delay Safety Control)

 The Compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on

again by pressing OFF/ON button at remote control within this period.

 This control is not applicable if the power supply is cut off and on again.
 This phenomenon is to balance the pressure inside the refrigerant cycle.

13.1.2 Total Running Current

1 When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor

operation will be decreased.
2 If the running current does not exceed X value for 5 seconds, the frequency instructed will be increased.
3 However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for

3 minutes.

Model XE9PKUA XE12PKUA

Operation Mode X (A) Y (A) X (A) Y (A)

Cooling / Soft Dry (A) 6.48 15.00 7.70 15.00

Cooling / Soft Dry (B) 6.48 15.00 7.70 15.00

Heating 7.48 15.00 9.20 15.00

Cooling / Soft Dry (C) 6.48 15.00 7.70 15.00

4 The first 30 minutes of cooling operation, (A) will be applied.

13.1.3 IPM (Power transistor) Prevention Control

 Overheating Prevention Control

1 When the IPM temperature rises to 248°F (120°C), compressor operation will stop immediately.
2 Compressor operation restarts after 3 minutes the temperature decreases to 230°F (110°C).
3 If this condition repeats continuously 4 times within 20 minutes, timer LED will be blinking (“F96” is indicated).

 DC Peak Current Control

1 When electric current to IPM exceeds set value of 16.0 ±2.0A, the compressor will stop operate. Then,

operation will restart after 3 minutes.
2 If the set value is exceeded again more than 30 seconds after the compressor starts, the operation will

restart after 1 minute.
3 If the set value exceeded again within 30 seconds after the compressor starts, the operation will restart after

1 minute. If this condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off, timer

LED will be blinking (“F99” is indicated).

44

13.1.4 Compressor Overheating Prevention Control

 Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The

changes of frequency are as below.

 If compressor discharge temperature exceeds 224.6°F (107°C), compressor will be stopped, occurs 4 times per

20 minutes, timer LED will be blinking. (“F97” is indicated.)

13.1.5 Low Pressure Prevention Control (Gas Leakage Detection)

 Control start conditions

o For 5 minutes, the compressor continuously operates and outdoor total current is between 0.75A and 0.95A.
o During Cooling and Soft Dry operations:

Indoor suction temperature - indoor piping temperature is below 7.2°F (4°C).

o During Heating operations :

Indoor piping temperature - indoor suction is under 9°F (5°C).

 Control contents

o Compressor stops (and restart after 3 minutes).
o If the conditions above happen 2 times within 20 minutes, the unit will:

 Stop operation
 Timer LED blinks and “F91” indicated.

13.1.6 Low Frequency Protection Control 1

 When the compressor operate at frequency lower than 24 Hz continued for 20 minutes, the operation frequency

will be changed to 23 Hz for 2 minutes.

13.1.7 Low Frequency Protection Control 2

 When all the below conditions comply, the compressor frequency will change to lower frequency.

Temperature, T, for: Cooling/Soft Dry Heating

Indoor intake air (°C) T < 14 or T ≥ 30 T < 14 or T ≥ 28

Outdoor air (°C) T < 13 or T ≥ 38 T < 4 or T ≥ 24

Indoor heat exchanger (°C) T < 30 T ≥ 0

Temperature, T, for: Cooling/Soft Dry Heating

Indoor intake air (°F) T < 57.2 or T ≥ 86.0 T < 57.2 or T ≥ 82.4

Outdoor air (°F) T < 55.4 or T ≥ 100.4 T < 39.2 or T ≥ 75.2

Indoor heat exchanger (°F) T < 86.0 T ≥ 32.0

45

13.2 Protection Control For Cooling & Soft Dry Operation

13.2.1 Outdoor Air Temperature Control

 The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the

diagram below.

 This control will begin 1 minute after the compressor starts.
 Compressor frequency will adjust base on outdoor air temperature.

13.2.2 Cooling Overload Control

 Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation

frequency).

 The compressor stop if outdoor pipe temperature exceeds 141.8°F (61°C).
 If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95 indicated: outdoor high pressure rise

protection).

13.2.3 Freeze Prevention Control 1

 When indoor heat exchanger temperature is lower than 32°F (0°C) continuously for 6 minutes, compressor will

stop operating.

 Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 41°F (5°C).
 At the same time, indoor fan speed will be higher than during its normal operation.
 If indoor heat exchanger temperature is higher than 41°F (5°C) for 5 minutes, the fan speed will return to its

normal operation.

13.2.4 Freeze Prevention Control 2

 Control start conditions

o During Cooling operation and soft dry operation

 During thermo OFF condition, indoor intake temperature is less than 50°F (10°C) or

 Compressor stops for freeze prevention control

o Either one of the conditions above occurs 5 times in 60 minutes.

 Control contents

o Operation stops
o Timer LED blinks and “H99” indicated

13.2.5 Dew Prevention Control 1

 To prevent dew formation at indoor unit discharge area.
 This control will be activated if:

o Outdoor air temperature and Indoor pipe temperature judgment by microcontroller is fulfilled.
o When Cooling or Dry mode is operated more than 20 minutes or more.

 This control stopped if:

o Compressor stopped.
o Remote control setting changed (fan speed / temperature).
o Outdoor air temperature and indoor intake temperature changed.

 Fan speed will be adjusted accordingly in this control.

46

13.2.6 Odor Cut Control

 To reduce the odor released from the unit.

o Start Condition

 AUTO FAN Speed is selected during COOL or DRY operation.
 During freeze prevention control and timer preliminary operation, this control is not applicable.

o Control content

 Depends on compressor conditions:

1. Compressor OFF → Compressor ON.

The indoor unit fan stops temporarily and then starts to blow at minimum airflow for 30 seconds.

2. Compressor ON → Compressor OFF.

The indoor unit fan stops for 90 seconds and then blows at minimum airflow for 20 seconds.

13.3 Protection Control For Heating Operation

13.3.1 Intake Air Temperature Control

Compressor will operate at limited freq., if indoor intake air temperature is 86°F (30°C) or above.

13.3.2 Outdoor Air Temperature Control

 The Max current value is regulated when the outdoor air temperature rise above 57.2°F (14°C) in order to avoid

compressor overloading.

13.3.3 Overload Protection Control

 The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown

below.

 If the heat exchanger temperature exceeds 140°F (60°C), compressor will stop.

13.3.4 Low Temperature Compressor Oil Return Control

 In heating operation, if the outdoor temperature falls below 14°F (-10°C) when compressor starts, the

compressor frequency will be regulated up to 600 seconds.

13.3.5 Cold Draught Prevention Control

 When indoor pipe temperature is low, cold draught operation starts where indoor fan speed will be reduced.

13.3.6 Deice Operation

 When outdoor pipe temperature and outdoor air temperature is low, deice operation start where indoor fan motor

and outdoor fan motor stop and operation LED blinks.

47

14. Servicing Mode

14.1 Auto OFF/ON Button

1 AUTO OPERATION MODE

The Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation

can be used to operate air conditioner with limited function if remote control is misplaced or malfunction.

2 TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE)

The Test Run operation will be activated if the Auto OFF/ON button is pressed continuously for more than

5 seconds. A “beep” sound will heard at the fifth seconds, in order to identify the starting of Test Run

operation (Forced cooling operation). Within 5 minutes after Forced cooling operation start, the Auto OFF/ON

button is pressed for more than 5 seconds. A 2 “beep” sounds will heard at the fifth seconds, in order to

identify the starting of Normal cooling operation.

Within 5 minutes after Normal cooling operation start, the Auto OFF/ON button is pressed for more than

5 seconds. A 3 “beep” sounds will be heard at the fifth seconds, in order to identify the starting of Forced

heating operation.

The Auto OFF/ON button may be used together with remote control to set / change the advance setting of air

conditioner operation.

3 REMOTE CONTROL NUMBER SWITCH MODE

The Remote Control Number Switch Mode will be activated if the Auto OFF/ON button is pressed

continuously for more than 11 seconds (3 “beep” sounds will occur at 11th seconds to identify the Remote

Control Number Switch Mode is in standby condition) and press “AC RESET” button and then press any

button at remote control to transmit and store the desired transmission code to the EEPROM.

There are 4 types of remote control transmission code could be selected and stored in EEPROM of indoor

unit. The indoor unit will only operate when received signal with same transmission code from remote control.

This could prevent signal interference when there are 2 or more indoor units installed nearby together.

To change remote control transmission code, short or open jumpers at the remote control printed circuit

board.

 During Remote Control Number Switch Mode, press any button at remote control to transmit and store

the transmission code to the EEPROM.

Remote Control Printed Circuit Board

Jumper A (J_A) Jumper B (JB) Remote Control No.

Short Open A (Default)

Open Open B

Short Short C

Open Short D

48

4 REMOTE CONTROL RECEIVING SOUND OFF/ON MODE

The Remote Control Receiving Sound OFF/ON Mode will be activated if the Auto OFF/ON button is pressed
continuously for more than 16 seconds (4 “beep” sounds will occur at 16th seconds to identify the Remote
Control Receiving Sound Off/On Mode is in standby condition) and press “AC Reset” button at remote
control.

Press “Auto OFF/ON button” to toggle remote control receiving sound.

o Short “beep”: Turn OFF remote control receiving sound.
o Long “beep”: Turn ON remote control receiving sound.

After Auto OFF/ON Button is pressed, the 20 seconds counter for Remote Control Receiving Sound OFF/ON
Mode is restarted.

14.2 Remote Control Button

14.2.1 SET Button

 To check remote control transmission code and store the transmission code to EEPROM:

o Press “Set” button continuously for 10 seconds by using pointer.
o Press “Timer Set” button until a “beep” sound is heard as confirmation of transmission code changed.

14.2.2 RESET (RC)

 To clear and restore the remote control setting to factory default.

o Press once to clear the memory.

14.2.3 RESET (AC)

 To restore the unit’s setting to factory default.

o Press once to restore the unit’s setting.

14.2.4 TIMER ▲

 To change indoor unit indicator’s LED intensity.

o Press continuously for 5 seconds.

14.2.5 TIMER ▼

 To change remote control display from Degree Celsius (°C) to Degree Fahrenheit (°F).

o Press continuously for 10 seconds.

49

15. Troubleshooting Guide

15.1 Refrigeration Cycle System

In order to diagnose malfunctions, make sure that there are no
electrical problems before inspecting the refrigeration cycle.
Such problems include insufficient insulation, problem with the
power source, malfunction of a compressor and a fan.
The normal outlet air temperature and pressure of the refrigeration
cycle depends on various conditions, the standard values for them
are shown in the table on the right.

Normal Pressure and Outlet Air Temperature (Standard)

Cooling Mode

Heating Mode

*Condition: • Indoor fan speed = High

Cooling mode and 44.6°F (7°C) at the
heating mode

• Compressor operates at rated frequency

Gas Pressure

PSI

2

G)

(kg/cm

130.53 ~ 174.04
(9 ~ 12)

333.58 ~ 420.60

(23 ~ 29)

• Outdoor temperature 95°F (35°C) at the

Outlet air

Temperature

°F (°C)

53.6 ~ 60.8
(12 ~ 16)

96.8 ~ 113
(36 ~ 45)

50

15.1.1 Relationship between the condition of the air conditioner and pressure and
electric current

Condition of the

air conditioner

Insufficient refrigerant

(gas leakage)

Clogged capillary tube or

Strainer

Low Pressure High Pressure

Ô Ô Ô Ô Ô Ô

Ô Ô Ô Ò Ò Ò

Cooling Mode Heating Mode

Electric current

during operation

Low Pressure High Pressure

Electric current

during operation

Short circuit in the indoor unit

Heat radiation deficiency

of the outdoor unit

Inefficient compression

• Carry out the measurement of pressure, electric current, and temperature fifteen minutes after an operation is started.

Ô Ô Ô Ò Ò Ò

Ò Ò Ò Ô Ô Ô

Ò Ô Ô Ò Ô Ô

51

15.2 Breakdown Self Diagnosis Function

15.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code)

 Once abnormality has occurred during operation,

the unit will stop its operation, and Timer LED
blinks.

 Although Timer LED goes off when power supply

is turned off, if the unit is operated under a
breakdown condition, the LED will light up again.

 In operation after breakdown repair, the Timer

LED will no more blink. The last error code
(abnormality) will be stored in IC memory.

15.2.2 To Make a Diagnosis

1 Timer LED start to blink and the unit

automatically stops the operation.

2 Press the CHECK button on the remote

controller continuously for 5 seconds.

3 “- -” will be displayed on the remote controller

display.
Note: Display only for “- -”. (No transmitting
signal, no receiving sound and no Power LED
blinking.)

4 Press the “TIMER” ▲ or ▼ button on the

remote controller. The code “H00” (no
abnormality) will be displayed and signal will
be transmitted to the main unit.

5 Every press of the button (up or down) will

increase abnormality numbers and transmit
abnormality code signal to the main unit.

6 When the latest abnormality code on the main

unit and code transmitted from the remote
controller are matched, power LED will light
up for 30 seconds and a beep sound
(continuously for 4 seconds) will be heard. If
no codes are matched, power LED will light up
for 0.5 seconds and no sound will be heard.

7 The breakdown diagnosis mode will be

canceled unless pressing the CHECK button
continuously for 5 seconds or operating the
unit for 30 seconds.

8 The LED will be off if the unit is turned off or

the RESET button on the main unit is pressed.

15.2.3 To Display Memorized Error
Code (Protective Operation)

1 Turn power on.
2 Press the CHECK button on the remote

controller continuously for 5 seconds.

3 “- -” will be displayed on the remote controller

display.
Note: Display only for “- -”. (No transmitting
signal, no receiving sound and no Power LED
blinking.)

4 Press the “TIMER” ▲ or ▼ button on the

remote controller. The code “H00” (no
abnormality) will be displayed and signal will
be transmitted to the main unit. The power
LED lights up. If no abnormality is stored in
the memory, three beeps sound will be heard.

5 Every press of the button (up or down) will

increase abnormality numbers and transmit
abnormality code signal to the main unit.

6 When the latest abnormality code on the main

unit and code transmitted from the remote
controller are matched, power LED will light
up for 30 seconds and a beep sound
(continuously for 4 seconds) will be heard. If
no codes are matched, power LED will light up
for 0.5 seconds and no sound will be heard.

7 The breakdown diagnosis mode will be

canceled unless pressing the CHECK button
continuously for 5 seconds or operating the
unit for 30 seconds.

8 The same diagnosis can be repeated by

turning power on again.

15.2.4 To Clear Memorized Error Code
after Repair (Protective
Operation)

1 Turn power on (in standby condition).
2 Press the AUTO button for 5 seconds (A beep

receiving sound) on the main unit to operate
the unit at Forced Cooling Operation modes.

3 Press the CHECK button on the remote

controller for about 1 second with a pointed
object to transmit signal to main unit. A beep
sound is heard from main unit and the data is
cleared.

15.2.5 Temporary Operation (Depending
On Breakdown Status)

1 Press the AUTO button (A beep receiving

sound) on the main unit to operate the unit.
(Remote control will become possible.)

2 The unit can temporarily be used until

repaired.

52

15.3 Error Codes Table

Diagnosis

display

H00 No memory of failure — Normal operation — —

H11

H12

H14

H15

H16

H19

H23

H24

H27

H28

H30

H32

H33

H36

H37

H38

H39

H59

H64

H97

Abnormality /

Protection control

Indoor/outdoor
abnormal
communication

Indoor unit capacity
unmatched

Indoor intake air
temperature sensor
abnormality
Compressor
temperature sensor
abnormality
Outdoor current
transformer (CT)
abnormality

Indoor fan motor
mechanism lock

Indoor heat
exchanger
temperature sensor
abnormality
Indoor heat
exchanger
temperature sensor
2 abnormality
Outdoor air
temperature sensor
abnormality
Outdoor heat
exchanger
temperature sensor
1 abnormality
Outdoor discharge
pipe temperature
sensor abnormality
Outdoor heat
exchanger
temperature sensor
2 abnormality
Indoor / outdoor
misconnection
abnormality
Outdoor gas pipe
temperature sensor
abnormality
Outdoor liquid pipe
temperature sensor
abnormality
Indoor/Outdoor
mismatch (brand
code)

Abnormal indoor
operating unit or
standby units

ECONAVI sensor
abnormality

Outdoor high
pressure sensor
abnormality

Outdoor fan motor
mechanism lock

Abnormality

Judgment

After operation for
1 minute

90s after power
supply

Continuous for 5s —

Continuous for 5s —

— —

Continuous
happen for 7 times

Continuous for 5s —

Continuous for 5s —

Continuous for 5s —

Continuous for 5s —

Continuous for 5s —

Continuous for 5s —

— —

Continuous for 5s

Continuous for 5s

— — Brand code not match

3 times happen
within 40 minutes

Continuous for 25s —

Continuous for
1 minute

2 times happen
within 30 minutes

Protection

Operation

Indoor fan only
operation can
start by entering
into force cooling
operation

—

—

Heating
protection
operation only
Cooling
protection
operation only

—

—

—

Problem Check location

Indoor/outdoor
communication not
establish

Total indoor capability
more than maximum limit
or less than minimum limit,
or number of indoor unit
less than two
Indoor intake air
temperature sensor open
or short circuit

Compressor temperature
sensor open or short circuit

Current transformer faulty
or compressor faulty

Indoor fan motor lock or
feedback abnormal

Indoor heat exchanger
temperature sensor open
or short circuit

Indoor heat exchanger
temperature sensor 2 open
or short circuit

Outdoor air temperature
sensor open or short circuit

Outdoor heat exchanger
temperature sensor 1 open
or short circuit

Outdoor discharge pipe
temperature sensor open
or short circuit

Outdoor heat exchanger
temperature sensor 2 open
or short circuit

Indoor and outdoor rated
voltage different

Outdoor gas pipe
temperature sensor open
or short circuit
Outdoor liquid pipe
temperature sensor open
or short circuit

Wrong wiring and
connecting pipe, expansion
valve abnormality, indoor
heat exchanger sensor
open circuit

ECONAVI sensor open or
short circuit

High pressure sensor open
circuit during compressor
stop

Outdoor fan motor lock or
feedback abnormal

 Indoor/outdoor wire terminal
 Indoor/outdoor PCB
 Indoor/outdoor connection wire

 Indoor/outdoor connection wire
 Indoor/outdoor PCB
 Specification and combination

table in catalogue

 Indoor intake air temperature

sensor lead wire and connector

 Compressor temperature

sensor lead wire and connector

 Outdoor PCB faulty or

compressor faulty

 Fan motor lead wire and

connector

 Fan motor lock or block

 Indoor heat exchanger

temperature sensor lead wire
and connector

 Indoor heat exchanger

temperature sensor 2 lead wire
and connector

 Outdoor air temperature sensor

lead wire and connector

 Outdoor heat exchanger

temperature sensor 1 lead wire
and connector

 Outdoor discharge pipe

temperature sensor lead wire
and connector

 Outdoor heat exchanger

temperature sensor 2 lead wire
and connector

 Indoor and outdoor units check

 Outdoor gas pipe temperature

sensor lead wire and connector

 Outdoor liquid pipe temperature

sensor lead wire and connector

 Check indoor unit and outdoor

unit

 Check indoor/outdoor

connection wire and connection
pipe

 Indoor heat exchanger sensor

lead wire and connector

 Expansion valve and lead wire

and connector

 ECONAVI sensor (defective or

disconnected)

 ECONAVI PCB

 High pressure sensor
 Lead wire and connector

 Outdoor fan motor lead wire

and connector

 Fan motor lock or block

53

Diagnosis

display

H98

H99

F11

F17

F90

F91

F93

F94

F95

F96

F97

F98

F99

Abnormality /

Protection control

Indoor high pressure
protection

Indoor operating unit
freeze protection

4-way valve
switching
abnormality

Indoor standby units
freezing abnormality

Power factor
correction
(PFC) circuit
protection
Refrigeration cycle
abnormality

Compressor
abnormal revolution
Compressor
discharge overshoot
protection

Outdoor cooling high
pressure protection

Power transistor
module overheating
protection
Compressor
overheating
protection

Total running current
protection

Outdoor direct
current (DC) peak
detection

Abnormality

Judgment

— —

— —

4 times happen
within 30 minutes

3 times happen
within 40 minutes

4 times happen
within 10 minutes

2 times happen
within 20 minutes

4 times happen
within 20 minutes

4 times happen
within 30 minutes

4 times happen
within 20 minutes

4 times happen
within 30 minutes

3 times happen
within 30 minutes

3 times happen
within 20 minutes

Continuous
happen for 7 times

Protection

Operation

—

—

—

—

—

—

—

—

— Compressor overheat

— Total current protection

—

Problem Check location

Indoor high pressure
protection (Heating)

Indoor freeze protection
(Cooling)

4-way valve switching
abnormal

Wrong wiring and
connecting pipe, expansion
valve leakage, indoor heat
exchanger sensor open
circuit

Power factor correction
circuit abnormal

Refrigeration cycle
abnormal

Compressor abnormal
revolution

Compressor discharge
pressure overshoot

Cooling high pressure
protection

Power transistor module
overheat

Power transistor module
current protection

 Check indoor heat exchanger
 Air filter dirty
 Air circulation short circuit
 Check indoor heat exchanger
 Air filter dirty
 Air circulation short circuit

 4-way valve
 Lead wire and connector

 Check indoor/outdoor

connection wire and pipe

 Indoor heat exchanger sensor

lead wire and connector

 Expansion valve lead wire and

connector

 Outdoor PCB faulty

 Insufficient refrigerant or valve

close

 Power transistor module faulty

or compressor lock

 Check refrigeration system

 Check refrigeration system
 Outdoor air circuit

 PCB faulty
 Outdoor air circuit (fan motor)

 Insufficient refrigerant

 Check refrigeration system
 Power source or compressor

lock

 Power transistor module faulty

or compressor lock

54

15.4 Self-diagnosis Method

15.4.1 H11 (Indoor/Outdoor Abnormal Communication)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal

transmission is checked whether it is normal.

Malfunction Caused

 Faulty indoor unit PCB.
 Faulty outdoor unit PCB.
 Indoor unit-outdoor unit signal transmission error due to wiring error.
 Indoor unit-outdoor unit signal transmission error due to breaking of wire in the connection wires between the

indoor and outdoor units.

Troubleshooting

55

15.4.2 H12 (Indoor/Outdoor Capacity Rank Mismatched)

Malfunction Decision Conditions

 During startup, error code appears when different types of indoor and outdoor units are interconnected.

Malfunction Caused

 Wrong models interconnected.
 Wrong indoor unit or outdoor unit PCBs mounted.
 Indoor unit or outdoor unit PCBs defective.
 Indoor-outdoor unit signal transmission error due to wrong wiring.
 Indoor-outdoor unit signal transmission error due to breaking of wire 3 in the connection wires between the indoor

and outdoor units.

Troubleshooting

56

15.4.3 H14 (Indoor Intake Air Temperature Sensor Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the indoor intake air

temperature sensor are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.
 Faulty sensor.
 Faulty PCB.

Troubleshooting

57

15.4.4 H15 (Compressor Temperature Sensor Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor

temperature sensor are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.
 Faulty sensor.
 Faulty PCB.

Troubleshooting

58

15.4.5 H16 (Outdoor Current Transformer)

Malfunction Decision Conditions

 An input current, detected by Current Transformer CT, is below threshold value when the compressor is

operating at certain frequency value for 3 minutes.

Malfunction Caused

 Lack of gas
 Broken CT (current transformer)
 Broken Outdoor PCB

Troubleshooting

59

15.4.6 H19 (Indoor Fan Motor – DC Motor Mechanism Locked)

Malfunction Decision Conditions

 The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor

(feedback of rotation > 2550rpm or < 50rpm)

Malfunction Caused

 Operation stops due to short circuit inside the fan motor winding.
 Operation stops due to breaking of wire inside the fan motor.
 Operation stops due to breaking of fan motor lead wires.
 Operation stops due to Hall IC malfunction.
 Operation error due to faulty indoor unit PCB.

Troubleshooting

60

15.4.7 H23 / H24 (Indoor Pipe Temperature Sensor Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger

temperature sensor are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.
 Faulty sensor.
 Faulty PCB.

Troubleshooting

61

15.4.8 H27 (Outdoor Air Temperature Sensor Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature

sensor are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.
 Faulty sensor.
 Faulty PCB.

Troubleshooting

62

15.4.9 H28 (Outdoor Pipe Temperature Sensor Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature

sensor are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.
 Faulty sensor.
 Faulty PCB.

Troubleshooting

63

15.4.10 H30 (Compressor Discharge Temperature Sensor Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe

temperature sensor are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.
 Faulty sensor.
 Faulty PCB.

Troubleshooting

64

15.4.11 H32 (Outdoor Heat Exchanger Temperature Sensor 2 Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the outdoor heat exchanger

temperature sensor are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.
 Faulty sensor.
 Faulty PCB.

Troubleshooting

65

15.4.12 H33 (Unspecified Voltage between Indoor and Outdoor)

Malfunction Decision Conditions

 The supply power is detected for its requirement by the indoor/outdoor transmission.

Malfunction Caused

 Wrong models interconnected.
 Wrong indoor unit and outdoor unit PCBs used.
 Indoor unit or outdoor unit PCB defective.

Troubleshooting

66

15.4.13 H36 (Outdoor Gas Pipe Sensor Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the outdoor gas pipe

temperature sensor are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.
 Faulty sensor.
 Faulty PCB.

Troubleshooting

67

15.4.14 H37 (Outdoor Liquid Pipe Temperature Sensor Abnormality)

Malfunction Decision Conditions

 During startup and operation of cooling and heating, the temperatures detected by the outdoor liquid pipe

temperature sensor are used to determine sensor errors.

Malfunction Caused

 Faulty connector connection.
 Faulty sensor.
 Faulty PCB.

Troubleshooting

68

15.4.15 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked)

Malfunction Decision Conditions

 The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor.

Malfunction Caused

 Operation stops due to short circuit inside the fan motor winding.
 Operation stops due to breaking of wire inside the fan motor.
 Operation stops due to breaking of fan motor lead wires.
 Operation stops due to Hall IC malfunction.
 Operation error due to faulty outdoor unit PCB.

Troubleshooting

69

15.4.16 H98 (Error Code Stored in Memory and no alarm is triggered / no TIMER LED
flashing)

Malfunction Decision Conditions

 Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is

operating in heating operation.

 Phenomena: unit is stopping and re-starting very often in heating mode

Malfunction Caused

 Indoor heat exchanger thermistor
 Clogged air filter or heat exchanger
 Over-bent pipe (liquid side)

Troubleshooting

70

15.4.17 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry)

Error Code will not display (no Timer LED blinking) but store in EEPROM

Malfunction Decision Conditions

 Freeze prevention control takes place (when indoor pipe temperature is lower than 35.6°F (2°C))

Malfunction Caused

 Air short circuit at indoor unit
 Clogged indoor unit air filter
 Dust accumulation on the indoor unit heat exchanger
 2/3 way valve closed
 Faulty indoor unit fan motor
 Refrigerant shortage (refrigerant leakage)
 Clogged expansion valve or strainer
 Faulty indoor pipe temperature sensor
 Faulty indoor unit PCB

Troubleshooting

71

15.4.18 F11 (4-way Valve Switching Failure)

Malfunction Decision Conditions

 When indoor heat exchanger is cold during heating (except deice) or when indoor heat exchanger is hot during

cooling and compressor operating, the 4-way valve is detected as malfunction.

Malfunction Caused

 Indoor heat exchanger (pipe) thermistor
 4-way valve malfunction

Troubleshooting

* Check gas side pipe – for hot gas flow in cooling mode

72

15.4.19 F17 (Indoor Standby Units Freezing Abnormality)

Malfunction Decision Conditions

 When the different between indoor intake air temperature and indoor pipe temperature is above 50°F (10°C) or

indoor pipe temperature is below 30.2°F (-1.0°C).

Remark:
When the indoor standby unit is freezing, the outdoor unit transfers F17 error code to the corresponding indoor
unit and H39 to other indoor unit(s).

Malfunction Caused

 Wrong wiring connection
 Faulty sensor
 Faulty expansion valve

Troubleshooting

73

15.4.20 F90 (Power Factor Correction Protection)

Malfunction Decision Conditions

 To maintain DC voltage level supply to power transistor.
 To detect high DC voltage level after rectification.

Malfunction Caused

 During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at

the outdoor unit main PCB senses abnormal DC voltage level for power transistors.

 When DC voltage detected is LOW, transistor switching will turn ON by controller to push-up the DC level.
 When DC voltage detected is HIGH (391Vdc – 425Vdc), active LOW signal will send by the controller to turn OFF

relay RY-C.

Troubleshooting

74

15.4.21 F91 (Refrigeration Cycle Abnormality)

Malfunction Decision Conditions

 The input current is low while the compressor is running at higher than the setting frequency.

Malfunction Caused

 Lack of gas.
 3-way valve close.

Troubleshooting

75

15.4.22 F93 (Compressor Rotation Failure)

Malfunction Decision Conditions

 A compressor rotation failure is detected by checking the compressor running condition through the position

detection circuit.

Malfunction Caused

 Compressor terminal disconnect
 Faulty Outdoor PCB
 Faulty compressor

Troubleshooting

76

15.4.23 F95 (Outdoor High Pressure Protection: Cooling or Soft Dry)

Malfunction Decision Conditions

 During operation of cooling or soft dry, when outdoor unit heat exchanger high temperature data is detected by

the outdoor unit heat exchanger thermistor.

Malfunction Caused

 Outdoor heat exchanger temperature rise due to short-circuit of hot discharge air flow.
 Outdoor heat exchanger temperature rise due to defective of outdoor fan motor.
 Outdoor heat exchanger temperature rise due to defective outdoor heat exchanger thermistor.
 Outdoor heat exchanger temperature rise due to defective of outdoor unit PCB.

Troubleshooting

77

15.4.24 F96 (IPM Overheating)

Malfunction Decision Conditions

 During operating of cooling and heating, when IPM temperature data 212°F (100°C) is detected by the IPM

temperature sensor.

Multi Models only

o Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated.
o Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data 194°F

(90°C) is detected by the heat sink temperature sensor.

Malfunction Caused

 IPM overheats due to short circuit of hot discharge air flow.
 IPM overheats due to defective of outdoor fan motor.
 IPM overheats due to defective of internal circuitry of IPM.
 IPM overheats due to defective IPM temperature sensor.

Multi Models Only

o Compressor OL connector poor contact.
o Compressor OL faulty.

Troubleshooting

78

15.4.25 F97 (Compressor Overheating)

Malfunction Decision Conditions

 During operation of cooling and heating, when compressor tank temperature data 233.6°F (112°C) is detected by

the compressor tank temperature sensor.

Malfunction Caused

 Faulty compressor tank temperature sensor
 2/3 way valve closed
 Refrigerant shortage (refrigerant leakage)
 Faulty outdoor unit PCB
 Faulty compressor

Troubleshooting

79

15.4.26 F98 (Input Over Current Detection)

Malfunction Decision Conditions

 During operation of cooling and heating, when an input over-current (X value in Total Running Current Control) is

detected by checking the input current value being detected by current transformer (CT) with the compressor
running.

Malfunction Caused

 Excessive refrigerant.
 Faulty outdoor unit PCB.

Troubleshooting

80

15.4.27 F99 (DC Peak Detection)

Malfunction Decision Conditions

During startup and operation of cooling and heating, when inverter DC peak data is received by the outdoor internal
DC Peak sensing circuitry.

Malfunction Caused

 DC current peak due to compressor failure.
 DC current peak due to defective power transistor(s).
 DC current peak due to defective outdoor unit PCB.
 DC current peak due to short circuit.

Troubleshooting

81

16. Disassembly and Assembly Instructions

High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with
repair work. Failure to heed this caution may result in electric shocks.

16.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor

Removal Procedures

16.1.1 To remove front grille

WARNING

16.1.2 To remove electronic controller

Figure 1

Figure 2

82

Figure 3 Figure 4

16.1.3 To remove discharge grille

Figure 5

83

16.1.4 To remove control board

Figure 6

16.1.5 To remove cross flow fan and indoor fan motor

Figure 7

84

Figure 8

Figure 9

85

Figure 10

86

16.2 Outdoor Electronic Controller Removal Procedure

1 Remove the 4 screws of the Top Panel.

4 Remove the Control Board.

Fig.1

2 Remove the 10 screws of the Front Panel.

Fig.2

3 Remove the Top Cover of the Electronic

Controller.

Fig.4

5 Remove the 8 screws of the Electronic

Controller.

Fig.5

Caution! When handling electronic controller, be careful of

electrostatic discharge.

Fig.3

87

17. Technical Data

17.1 Operation Characteristics

17.1.1 CS-XE9PKUA CU-XE9PKUA

 Cooling Characteristic
[Condition] Indoor temperature: 81°F (27°C) (DBT), 66°F (19°C) (WBT)
Piping Length: 24.6ft (7.5 m)
Remote condition: High fan speed
Comp. Hz: F

c

88

 Piping Length Characteristic
[Condition] Indoor temperature: 81°F (27°C) (DBT), 66°F (19°C) (WBT)
Outdoor temperature: 95°F (35°C) (DBT)
Remote condition: High fan speed
Comp. Hz: F

c

89

 Heating Characteristic
[Condition] Indoor temperature: 68°F (20°C) (DBT)
Piping Length: 24.6ft (7.5 m)
Remote condition: High fan speed
Comp. Hz: F

h

90

 Piping Length Characteristic
[Condition] Indoor temperature: 68°F (20°C) (DBT)
Outdoor temperature: 47°F (8°C) (DBT), 43°F (6°C) (WBT)
Remote condition: High fan speed
Comp. Hz: F

h

91

17.1.2 CS-XE12PKUA CU-XE12PKUA

 Cooling Characteristic
[Condition] Indoor temperature: 81°F (27°C) (DBT), 66°F (19°C) (WBT)
Piping Length: 24.6ft (7.5 m)
Remote condition: High fan speed
Comp. Hz: F

c

92

 Piping Length Characteristic
[Condition] Indoor temperature: 81°F (27°C) (DBT), 66°F (19°C) (WBT)
Outdoor temperature: 95°F (35°C) (DBT)
Remote condition: High fan speed
Comp. Hz: F

c

93

 Heating Characteristic
[Condition] Indoor temperature: 68°F (20°C) (DBT)
Piping Length: 24.6ft (7.5 m)
Remote condition: High fan speed
Comp. Hz: F

h

94

 Piping Length Characteristic
[Condition] Indoor temperature: 68°F (20°C) (DBT)
Outdoor temperature: 47°F (8°C) (DBT), 43°F (6°C) (WBT)
Remote condition: High fan speed
Comp. Hz: F

h

95

17.2 Sensible Capacity Chart

 CU-XE9PKUA

208-230V Outdoor Temperature

Indoor

wet bulb

62.6°F

(17.0 °C)

66.2°F

(19.0 °C)

67.1°F

(19.5 °C)

71.6°F

(22.0 °C)

 CU-XE12PKUA

208-230V Outdoor Temperature

Indoor

wet bulb

62.6°F

(17.0 °C)

66.2°F

(19.0 °C)

67.1°F

(19.5 °C)

71.6°F

(22.0 °C)

TC - Total Cooling Capacity (kW)
SHC - Sensible Heat Capacity (kW)
IP - Input Power (kW)
Indoor 80.6°F/66.2°F (27°C/19°C)
Outdoor 95.0°F/75.2°F (35°C/24°C)

86 °F (30 °C) 95 °F (35 °C) 104 °F (40 °C) 114.8 °F (46 °C)

TC SHC IP TC SHC IP TC SHC IP TC SHC IP

2.53 1.92 0.49 2.36 1.84 0.53 2.20 1.77 0.57 2.00 1.68 0.61

2.55 0.54

2.78 2.01 0.50 2.60 1.93 0.54 2.41 1.86 0.58 2.20 1.77 0.63

3.03 2.08 0.51 2.83 2.00 0.55 2.63 1.93 0.59 2.39 1.84 0.64

86 °F (30 °C) 95 °F (35 °C) 104 °F (40 °C) 114.8 °F (46 °C)

TC SHC IP TC SHC IP TC SHC IP TC SHC IP

3.33 2.53 0.73 3.11 2.42 0.79 2.90 2.33 0.84 2.63 2.21 0.91

3.36 0.80

3.66 2.65 0.75 3.42 2.54 0.80 3.18 2.45 0.86 2.89 2.33 0.93

3.99 2.74 0.76 3.73 2.64 0.82 3.47 2.55 0.87 3.15 2.43 0.94

96

18. Exploded View and Replacement Parts List

18.1 Indoor Unit

18.1.1 CS-XE9PKUA CS-XE12PKUA

Note
The above exploded view is for the purpose of parts disassembly and replacement.
The non-numbered parts are not kept as standard service parts.

97

SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-XE9PKUA CS-XE12PKUA REMARK

1 CHASSIS COMPLETE 1 CWD50C1730 ←

3 CROSS - FLOW FAN COMPLETE 1 CWH02C1137 ←

4 BEARING ASSY 1 CWH64K1010 ← O

4a SCREW – CROSS - FLOW FAN 1 CWH551146 ←

6 EVAPORATOR 1 CWB30C4585 CWB30C4588

7 FLARE NUT (LIQUID) 1 CWT251030 ←

8 FLARE NUT (GAS) 1 CWT251031 CWT251032

9 CLIP FOR SENSOR 2 CWH711019 ←

10 BACK COVER CHASSIS 1 CWD933463 ←

11 DISCHARGE GRILLE COMPLETE 1 CWE20C3419 ←

12 VERTICAL VANE 8 CWE241389 ←

13 VERTICAL VANE 2 CWE241409 ←

14 CONNECTING BAR 2 CWE261272 ←

17 LEAD WIRE - COMPLETE 1 CWA68C0784 ← O

17a LEAD WIRE - COMPLETE 1 CWA68C0786 ← O

18 FULCRUM 1 CWH621157 ←

19 HORIZONTAL VANE COMPLETE 1 CWE24C1422 ←

20 HORIZONTAL VANE COMPLETE 1 CWE24C1421 ←

23 CAP - DRAIN TRAY 1 CWH521259 ←

24 SENSOR COMPLETE 1 CWA50C2800 ←

27 CONTROL BOARD CASING 1 CWH102564A ←

28 CONTROL BOARD TOP COVER 1 CWH131531 ←

29 CONTROL BOARD FRONT COVER CO. 1 CWH13C1309 ←

32 INDICATOR HOLDER 1 CWD933466 ←

33 FRONT GRILLE COMPLETE 1 CWE11C5689 ← O

34 GRILLE DOOR COMPLETE 1 CWE14C1099 ←

35 INTAKE GRILLE COMPLETE 1 CWE22K1610 ←

36 DECORATION BASE (LEFT) 1 CWE35K1166 ←

37 DECORATION BASE (RIGHT) 1 CWE351326 ←

38 SCREW - FRONT GRILLE 2 XTT4+16CFJ ←

39 AIR FILTER 2 CWD001326 ← O

40 DRAIN HOSE 1 CWH851173 ←

41 REMOTE CONTROL COMPLETE 1 CWA75C4246 ← O

42 INSTALLATION PLATE 1 CWH361134 ←

43 BAG COMPLETE - INSTALLATION SCREW 1 CWH82C1705 ←

44 OPERATING INSTRUCTION 1 CWF569182 ←

45 INSTALLATION INSTRUCTION 1 CWF615968 ←

46 INSTALLATION INSTRUCTION 1 CWF615977 ←

57 SENSOR COMPLETE (ECO) 1 CWA50C3005 ←

2 FAN MOTOR 1 ARW7715AC ← O

21 AIR SWING MOTOR 1 CWA981241 ← O

22 AIR SWING MOTOR 1 CWA981299 ← O

25 ELECTRONIC CONTROLLER - MAIN 1 CWA73C7809 CWA73C7810 O

30 TERMINAL BOARD COMPLETE 1 CWA28C2616 ←

31 ELECTRONIC CONTROLLER - INDICATOR 1 CWA747457 ← O

31a ELECTRONIC CONTROLLER - RECEIVER 1 CWA747456 ← O

58 AIR SWING MOTOR (ECO) 1 CWA981298 ← O

59 ELECTRONIC CONTROLLER 1 CWA746917 ← O

60 ELECTRONIC CONTROLLER 1 CWA747279 ← O

98

SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-XE9PKUA CS-XE12PKUA REMARK

61 BAG 1 CWG861515 ←

62 SHOCK ABSORBER (L) 1 CWG713484 ←

63 SHOCK ABSORBER (R) 1 CWG713485 ←

64 C.C.CASE 1 CWG568509 ←

(NOTE)

 All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488).
 “O” marked parts are recommended to be kept in stock.

99

18.2 Outdoor Unit

Note
The above exploded view is for the purpose of parts disassembly and replacement.
The non-numbered parts are not kept as standard service parts.

100