Panasonic CS-E9DKDW, CU-E9DKD, CS-E12DKDW, CU-E12DKD Service Manual

Order No: MAC0412071C2

Air Conditioner

CS-E9DKDW CU-E9DKD CS-E12DKDW CU-E12DKD

CONTENTS

Page Page

1 Features 2

2 Functions

2.1. Remote Control

2.2. Indoor Unit

2.3. Outdoor Unit

3 Product Specifications

3.1. CS-E9DKDW CU-E9DKD

3.2. CS-E12DKDW CU-E12DKD

4 Dimensions

4.1. Indoor Unit & Remote Control

4.2. Outdoor Unit

5 Refrigeration Cycle Diagram

6 Block Diagram

7 Wiring Diagram

8 Operation Details

8.1. Basic Function

8.2. Protection Control Features 35

9 Operating Instructions

10 Installation Instructions

10.1. Safety Precautions

10.2. Indoor Unit

10.3. Outdoor Unit

11 Installation And Servicing Air Conditioner Using R410A

11.1. Outline

11.2. Tools For Installing/Servicing Refrigerant Piping

11.3. Refrigerant Piping Work

11.4. Installation, Transferring, Servicing

12 Servicing Information

12.1. Troubleshooting

12.2. Breakdown Self Diagnosis Function

12.3. Remote Control

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

12.4. Disassembly of Parts 77

13 Technical Data

13.1. Operation Characteristics

13.2. Sensible Capacity Chart

14 Exploded View (Indoor Unit)

14.1. CS-E9DKDW CS-E12DKDW

15 Replacement Parts List (Indoor Unit)

15.1. CS-E9DKDW CS-E12DKDW

16 Exploded View (Outdoor Unit)

1 Features

Product

•

Four modes of operation selection

−

Powerful Mode operation

−

Delay ON Timer and OFF Timer

−

Ionizer Mode Operation

−

Quiet Mode Operation

−

Automatic air swing and manual adjusted by Remote

−

Control for horizontal and vertical airflow.

Supersonic Air Purifying System with Super Alleru-

−

Buster.

Inactive various harmful airbone elements including allergens, viruses and bacteria.

Generated supersonic waves enhance the ability to collect dust and dirt in the air.

16.1. CU-E9DKD CU-E12DKD 85

17 Replacement Parts List (Outdoor Unit)

17.1. CU-E9DKD CU-E12DKD

18 Electronic Circuit Diagram

18.1. Indoor Unit

18.2. Outdoor Unit

18.3. Remote Control

18.4. Print Pattern Indoor Unit Printed Circuit Board

18.5. Print Pattern Outdoor Unit Printed Circuit Board

Serviceability Improvement

•

Removable and washable Front Panel

−

Breakdown Self Diagnosis function

−

Environmental Protection

•

Non-ozone depletion substances refrigerant (R410A)

−

Quality Improvement

•

Gas leakage detection

−

Deice operation

−

Auto restart control

−

2 Functions

2.1. Remote Control

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

OFF/ON

MODE

POWERFUL

QUIET

AIR SWING

Operation OFF / ON

Operation Mode Selection

•

HEAT COOL DRY

Automatic Operation Heating Operation Cooling Operation Soft Dry Operation

Powerful Mode Operation

Quiet Mode Operation OFF / ON

Ion Mode Operation OFF / ON

Airflow Direction Control

• Vertical Automatic Airflow Direction Control and Manual Airflow Direction Control (5 stages of adjustment).

•

Horizontal Automatic Airflow Direction Control and Manual Airflow Direction Control (5 stages of adjustment).

FAN SPEED

TEMP

TIMER

OFF

∧ ∨

SET

CANCEL

CLOCK

CHECK

RESET

Indoor Fan Speed Selection

• Low

•

AUTO FAN

MediumMedium Medium+ High Automatic Fan Speed

Room Temperature Setting

• Increase or decrease set temperature (16°C to 30°C)

Timer Operation Selection

• 24-hour, OFF / ON Real Timer Setting.

Time / Timer Setting

• Hours and minutes setting.

Timer Operation Set / Cancel

• ON Timer and OFF Timer setting and cancellation.

Clock Setting

• Current time setting.

Check Point

• Breakdown self diagnosis function.

Reset Point

• Clear memory data.

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

2.2. Indoor Unit

Automatic Operation Switch

• Press for < 5s to run Automatic Operation. (Used when the remote control cannot be used.)

• Press continuously for 5s and < 8s to run Forced Cooling Operation.

• Press continuously for 8s and < 11s to run Forced Heating Operation.

• Press continuously for 11s and < 16s to change different remote controlling setting (A↔B Mode).

• Press continuously for 16s or < 21s to switch OFF / ON Remote Control Receiving Sound or H14 Abnormality Detection Mode.

Operation Indication Lamps (LED)

•

POWER (Green) ........ Lights up in

operation, blinks in Automatic Operation Mode judging and Hot Start operation.

TIMER (Orange) ...... Lights up in Timer

•

Setting. Blinks in Self Diagnosis Control.

QUIET (Orange) ...... Lights up in Quiet

•

Mode Operation.

POWERFUL (Orange) ..... Lights up when

•

Powerful Mode is selected.

(Green) .............. Lights up in Ionizer

•

Mode Operation.

•

SUPER ALLERU-BUSTER

(Blue) ... Lights up in

operation.

Four Operation Modes

• Automatic, Heating, Cooling and Soft Dry Operation.

Automatic and 5 Manual Indoor Fan Speeds

Automatic and 5 Manual Vertical Airflow Directions

Automatic and 5 Manual Horizontal Airflow Directions

Powerful Mode

• For quick cooling or heating.

Quiet Mode

• To provide quiet operation.

Ionizer Control

• Ionizer control for generate negative ion in discharge air.

Delay ON Timer and OFF Timer

Automatic Restart Control

• Operation is restarted after power failure at previous setting mode.

Microcomputer-controlled Room Temperature Control

Breakdown Self Diagnosis Function

Low Pressure Control (Gas Leakeage Detection)

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

Indoor Power Relay Control

Deodorizing Control

Anti-Dew Formation Control

Anti Freezing Control

Anti-Cold Draft Control

Hot Start

Intake Air Temperature Control

High Pressure Control

Deice Operation

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

2.3. Outdoor Unit

Time Delay Safety Control

30 seconds Forced Operation

Overload Protection Control

Total Running Current Control

Compressor Overheating Prevention Control

IPM (Power Transistor) Overheating Protection Control

Low Operation Frequency Protection Control

Mininum Operation Frequency Protection Control

Outdoor Air Temperature Control

Standby Control

Deice Operation

3 Product Specifications

3.1. CS-E9DKDW CU-E9DKD

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

Unit CS-E9DKDW CU-E9DKD

Cooling Capacity kW

kcal/h

BTU/h

Heating Capacity kW

kcal/h

BTU/h

Moisture Removal l/h

Pint/h

Power Source (Phase, Voltage, Cycle) ø

Airflow Method OUTLET

INTAKE

2.6 (0.80 - 3.00)

2,240 (690 - 2,580)

8,870 (2,050 - 10,200)

3.6 (0.80 - 5.00)

3,100 (690 - 4,300)

12,300 (2,050 - 17,100)

1.6

(3.4)

Single

220 - 230

SIDE VIEW TOP VIEW

Air Volume Lo m3/min (cfm) Cooling; 6.2 (220) —

Heating; 6.6 (230)

Me m3/min (cfm) Cooling; 7.9 (280) —

Heating; 8.6 (300)

Hi m3/min (cfm) Cooling; 9.6 (340) Cooling; 29.8 (1,050)

Heating; 10.5 (370)

SHi m3/min (cfm) Cooling; 9.9 (350) —

Heating; 10.8 (380)

dB (A) Cooling; High 39, Low 26 Cooling; 46

Heating; High 40, Low 27 Heating; 47

Noise Level

Power level dB Cooling; High 50 Cooling; High 59

Heating; High 51 Heating; High 60

Electrical Data Input W Cooling; 600 (175 - 780)

Heating; 845 (165 - 1,360)

Running Current A Cooling; 3.0 - 2.9

Heating; 4.2 - 4.0

EER W/W (kcal/hw), BTU/hw Cooling; 4.33 (3.73), 14.8 COP W/W (kcal/hw), BTU/hw Heating; 4.26 (3.67), 14.6 Starting Current A 4.2

Piping Connection Port (Flare piping)

Pipe Size (Flare piping)

Drain Hose

Inner diameter mm 12 — Length m 0.65 —

inch inch

G ; Half Union 3/8”

L ; Half Union 1/4” G (gas side) ; 3/8”

L (liquid side) ; 1/4”

G ; 3-way valve 3/8”

L ; 2-way valve 1/4”

G (gas side) ; 3/8”

L (liquid side) ; 1/4”

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

Unit CS-E9DKDW CU-E9DKD

Power Cord Length Number of core-wire

Dimensions Height inch (mm) 11 - 1/32 (280) 21 - 1/4 (540)

Width inch (mm) 31 - 15/32 (799) 30 - 23/32 (780)

Depth inch (mm) 7 - 7/32 (183) 11 - 3/8 (289) Net Weight lb (kg) 20 (9.0) 82 (37) Compressor Type — Hermetic Rotary

Motor Type — Brushless (6-pole)

Rated Output W — 700 Air Circulation Type Cross-flow Fan Propeller Fan

Material ASG20k1 P.P

Motor Type Transistor (8-poles) Induction (6-poles)

Input W — 61.3 Rate Output W 30 28

Fan Speed Lo (Cool/Heat) rpm 820/880 —

Me (Cool/Heat) rpm 1,050/1,140 — Hi (Cool/Heat) rpm 1,280/1,400 770 SHi (Cool/Heat) rpm 1,320/1,440 —

Heat Exchanger Description Evaporator Condenser

Tube material Copper Copper

Fin material Aluminium (Pre Coat) Aluminium (Blue Coated)

Fin Type Slit Fin Corrugated Fin

Row / Stage (Plate fin configuration, forced draft)

FPI 21 17

Size (W × H × L) mm 610 × 315 × 25.4 718.4

Refrigerant Control Device — Capillary Tube Refrigeration Oil (cm3) — RB68A (320) Refrigerant (R410A) g (oz) — 965 (34.1) Thermostat Electronic Control — Protection Device Electronic Control Electronic Control

Length mm — C1, C2 ; 950, C3 ; 411

Capillary Tube Flow Rate l/min — C1, C2 ; 4.1, C3 ; 18.8

Inner Diameter mm — C1, C2 ; 1.1, C3 ; 1.7

Air Filter Material

Style Fan Motor Capacitor µF, VAC — 2.0 µF, 440 VAC Compressor Capacitor µF, VAC — 65 µF, 350 VAC

— —

2/15 2/24

689.8

P.P.

Honeycomb

— —

× 504 × 36.4

—

•

Specifications are subject to change without notice for further improvement.

3.2. CS-E12DKDW CU-E12DKD

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

Unit CS-E12DKDW CU-E12DKD

Cooling Capacity kW

kcal/h

BTU/h

Heating Capacity kW

kcal/h

BTU/h

Moisture Removal l/h

Pint/h

Power Source (Phase, Voltage, Cycle) ø

Airflow Method OUTLET

INTAKE

3.50 (0.80 - 4.00)

3,010 (690 - 3,440)

11,950 (2,730 - 13,600)

4.80 (0.80 - 6.50)

4,130 (690 - 5,590)

16,400 (2,730 - 22,200)

2.0

(4.2)

Single

220 - 230

SIDE VIEW TOP VIEW

Air Volume Lo m3/min (cfm) Cooling; 6.9 (240) —

Heating; 8.1 (290)

Me m3/min (cfm) Cooling; 8.8 (310) —

Heating; 9.7 (340)

Hi m3/min (cfm) Cooling; 10.7 (380) Cooling; 31.0 (1,090)

Heating; 11.2 (400)

SHi m3/min (cfm) Cooling; 11.0 (390) —

Heating; 11.6 (410)

dB (A) Cooling; High 42, Low 29 Cooling; 48

Heating; High 42, Low 33 Heating; 50

Noise Level

Power level dB Cooling; High 53 Cooling; High 61

Heating; High 53 Heating; High 63

Electrical Data Input W Cooling; 965 (185 - 1,200)

Heating; 1,260 (175 - 1,890)

Running Current A Cooling; 4.7 - 4.5

Heating; 6.1 - 5.8

EER W/W (kcal/hw), BTU/hw Cooling; 3.63 (3.12), 12.4 COP W/W (kcal/hw), BTU/hw Heating; 3.81 (3.28), 13.0 Starting Current A 6.1

Piping Connection Port (Flare piping)

Pipe Size (Flare piping)

Drain Hose

Power Cord Length Number of core-wire

Inner diameter mm 12 — Length m 0.65 —

inch inch

G ; Half Union 1/2”

L ; Half Union 1/4” G (gas side) ; 1/2”

L (liquid side) ; 1/4”

— —

G ; 3-way valve 1/2”

L ; 2-way valve 1/4”

G (gas side) ; 1/2”

L (liquid side) ; 1/4”

— —

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

Unit CS-E12DKDW CU-E12DKD

Dimensions Height inch (mm) 11 - 1/32 (280) 21 - 1/4 (540)

Width inch (mm) 31 - 15/32 (799) 30 - 23/32 (780)

Depth inch (mm) 7 - 7/32 (183) 11 - 3/8 (289) Net Weight lb (kg) 20 (9.0) 82 (37) Compressor Type — Hermetic Rotary

Motor Type — Brushless (6-pole)

Rated Output W — 700 Air Circulation Type Cross-flow Fan Propeller Fan

Material ASG20k1 P.P

Motor Type Transistor (8-poles) Induction (6-poles)

Input W — 65.9 Rate Output W 30 29

Fan Speed Lo (Cool/Heat) rpm 910/1,080 —

Me (Cool/Heat) rpm 1,165/1,290 — Hi (Cool/Heat) rpm 1,420/1,500 830 SHi (Cool/Heat) rpm 1,460/1,540 —

Heat Exchanger Description Evaporator Condenser

Tube material Copper Copper

Fin material Aluminium (Pre Coat) Aluminium (Blue Coated)

Fin Type Slit Fin Corrugated Fin

Row / Stage (Plate fin configuration, forced draft)

2/15 2/24 FPI 21 17 Size (W × H × L) mm 610 × 315 × 25.4 718.4

Refrigerant Control Device — Capillary Tube Refrigeration Oil (cm3) — RB68A (320) Refrigerant (R410A) g (oz) — 980 (34.6) Thermostat Electronic Control — Protection Device Electronic Control Electronic Control

Length mm — C1, C2 ; 1,120, C3 ; 370

Capillary Tube Flow Rate l/min — C1, C2 ; 4.9, C3 ; 19.6

Inner Diameter mm — C1, C2 ; 1.2, C3 ; 1.7

Air Filter Material

Style

Fan Motor Capacitor µF, VAC — 2.0 µF, 440 VAC Compressor Capacitor µF, VAC — 65 µF, 350 VAC

P.P.

Honeycomb

× 504 × 36.4

689.8

—

•

Specifications are subject to change without notice for further improvement.

4 Dimensions

4.1. Indoor Unit & Remote Control

4.1.1. CS-E9DKDW CS-E12DKDW

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

4.2. Outdoor Unit

4.2.1. CU-E9DKD CU-E12DKD

5 Refrigeration Cycle Diagram

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

6 Block Diagram

7 Wiring Diagram

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

8 Operation Details

8.1. 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.

8.1.1. 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.

Table (a): Auto Operation Mode Setting

Mode Shift: Temperature Shift (°C) Cooling/Soft Dry→Heating -2.0 Heating→Cooling/Soft Dry +2.0

Table (b): Outdoor Air Temperature Shifting

Mode: Outdoor Temperature, X (°C): Temperature Shift (°C)

Cooling/Soft Dry 30 X +0.5

Heating 9 X -1.0

Table (c): Powerful Mode Shifting

Mode: Period, X (min): Temperature Shift (°C)

Cooling X 20 -2.0

Soft Dry X 20 -1.0

Heating X 20 +3.5

X 30 +1.0

5 X 9 -0.5 1 X 5 0.0

X 1 +1.0

X 20 0.0

X 20 +3.5

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

Table (d): Indoor Air Temperature Shifting

1. Target room temperature shift value (dGetaDst)

To offset the absolute gap between detection temperature with actual room temperature.

•

The heat exchanger unit’s temperature is different based on operation mode, it become the action operation mode

•

value.

Actual operation mode Target room temperature offset value (dGetaDst)

Cooling (1) Heating (2)

Dry (0)

2. Room temperature shift value (dGeta)

When compressor ON/OFF, correction of detected room temperature by shift value during defrost etc.

•

i) Initial value when operation starts, or changin g the actual operation mode.

Set the offset value at each operation mode. However, in order to improve the heating start up efficiency, the offset value will be changed based on the gap between setting temperature and room temperature.

Actual operation mode Gap between setting temperature and room

temperature Cool — (0) Heat (Operation start set temp. - room temp) <4°C (4)

(Operation start set temp.) 4°C (4)

Dry — (0)

Room temperature offset value

(dGeta)

ii) Updating during operation

During operation, it will compare with the target room temperature offset value at specific period, then the room temperature will be updated.

Actual operation mode Room temperature zone Updating period (sec.)

Cool — (180) Heat A, B, C, D zone (15)

Dry — (180)

Update the room temperature offset value (dGeta)

Temperature condition Room temp. offset value after modified (dGeta)

Target room temp. offset value > Room temp. offset value

(dGetaDst > dGeta)

Target room temp. offset value < Room temp. offset value

(dGetaDst < dGeta)

Target room temp. offset value = Room temp. offset value

(dGetaDst = dGeta)

dGeta + (0.5)

dGeta - (0.5)

Do not change

However, if the following condition is occurred, temperature cannot detect correctly and therefore no updatin g will be done.

Heating zone E and above (Temperature gap is big and great capacity increased)

•

During deice

•

After deice complete *within 600 sec.

•

Comp stop

•

Comp starting *within 600 sec.

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

8.1.2. Compressor Operation Frequency

8.1.2.1. The frequency determination method (Cooling operation control)

8.1.2.1.1. Basic specification

The domain directions data (intake-setting) transmitted from the interior of a room determines a changed part of frequency.

Then, a directed changed part changes frequency to the present frequency.

8.1.2.1.2. Initial frequency determination

After a starting control end, initial frequency (absolute value) is determined.

However, a FcMAX domain judges instantly.

8.1.2.1.3. Change frequency determination

When (Suction-setup) is +0.5deg, directions of Fcmax came by the mentioned initial frequency.

Fcmax continued until it reaches. (If other directions came by protection control, priority is given)

When room temperature is reached, it shifts to relative control after moving to change frequency.

The following operation determines change frequency.

The Hzkirikae = present condition frequency * Inclines and it is calculation.

Inclination = lapsed time to remote control attaintment (Minute)

Inclination 0-60 60 - 90 90

Inclination coefficient 80% 90% 100%

1. The present frequency is real operation frequency.

2. When change directions come out with remote control after starting, continue calculation as it is.

The time to room temperature attainment is calculated.

3. When remote control directions were changed before room temperature attainment and below room temperature attainment

temperature becomes

With initial frequency, it is considered as change frequency.

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

8.1.2.1.4. The frequency changed method

1. After shifting to relative control, (intake-setting) is every 60 seconds, A tap is adjusted according to the domain and frequency changes relatively to present condition.

2. Intake-setting to other domains by load sudden change (remote control setting, open air introduction, etc.). When it moves, it has the following renewal of data, an addition and subtraction tap is switched.

3. When the load change was further carried out and suction-setup separates the domain of relative control, it goes to the clause of initial frequency and operation frequency is determined.

8.1.2.2. The frequency determination method (Heating operation control)

8.1.2.2.1. Basic specification

Intake temperature domain is sent to outdoor. Renewal of data every 60 seconds in outdoor.

Domain directions data (intake-setting) transmitted from indoor determine a changed part of frequency.

Then, a directed changed part changes frequency to the present frequency.

Change of frequency may be 1 tap = 1Hz.

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

8.1.2.2.2. Initial frequency determination

After a starting control end, initial frequency (absolute value) is determined and is immediately shift.

However, the domain of Fhmax is judged instantly.

8.1.2.2.3. Change frequency determination

When directions of Fhmax determined from mentioned initial frequency, (intake-setting) relativity control. Fhmax continued until (If other directions came by protection control, priority is given there) room temperature is reached, it shifts to relative control after moving to change frequency.

The following operation determines change frequency.

The Hzkirikae = present condition frequency *Inclines (calculation)

Inclination = Lapsed time to remote control attainment (min)

Inclination 0-30 30 - 60 60

Inclination coefficient 70% 90% 100%

1. The present frequency is real operation frequency.

2. When directions change come out by remote control after starting, calculation continued.

The time to room temperature attainment is calculated.

3. When remote control directions were changed before room temperature achieved and below room temperature attainment

temperature becomes

With initial frequency, it is considered as change frequency.

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

8.1.2.2.4. The frequency changed method

1. When intake-setting remains for 30 seconds in a domain after shifting to relative control, a tap is adjusted according to the domain and frequency changes relatively to the present condition.

2. A suction-setup to other domains by load sudden change (remote control setting change, open air introduction, etc.).

When it moves, addition or subtraction tap is changed at the time of the following renewal of data.

3. When the load change was furthermore carried out and a suction-setup separates from the domain of relative control, it goes to the clause of initial frequency and operation frequency is determined.

8.1.2.3. The frequency determination method (Soft Dry operation control)

8.1.2.3.1. Basic specification

The domain directions data (intake-setting) transmitted from indoor determines a changed part of frequency.

Then, a directed changed part changes frequency to the present frequency.

Change of frequency may be 1 tap = 1Hz.

It applies to cooling correspondingly.

8.1.2.3.2. Initial frequency determination

It shifts to initial frequency after a starting frequency end.

Frequency ESCHZ02 ESCHZ01

ID intake 22°C ID intake < 22°C

38 (E12), 31 (E9) 34 (E12), 28 (E9)

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

8.1.2.3.3. The frequency change method

1. When (suction-setup) remains in a domain for 30 seconds, after shifting to relative control, a tap is adjusted according to the domain and frequency changes relatively to the present condition.

2. A suction-setup is to other domains by load sudden change (remote control setting, open air introduction, etc.). When it moves, an addition-and-subtraction tap is changed from the time of the following renewal of data.

8.1.3. Cooling Operation

8.1.3.1. Thermostat control

Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -1.5°C.

•

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

•

point.

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

8.1.4. Soft Dry Operation

8.1.4.1. Thermostat control

Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -2.0°C.

•

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

•

point.

8.1.5. Heating Operation

8.1.5.1. Thermostat control

Compressor is OFF when Intake Air Temperature - Internal Setting Temperature > +2.0°C.

•

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

•

point.

8.1.6. Automatic Operation

This mode can be set using remote control and the operation is decided by remote control setting temperature, indoor intake air temperature and outdoor air temperature.

During operation mode judgment, indoor fan motor (with speed of Lo-) and outdoor fan motor are running for 30 seconds to detect the indoor intake and outdoor air temperature. The operation mode is decided based on below chart.

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

Values of T1, T2, and T3 depend on remote control setting temperature, as shown in below table. After the adjustment of T1, T2 and T3 values, the operation mode for that particular environment and remote control setting is judged and performed, based on the above operation mode chart, every 30 minutes.

Remote Control Setting Temperature (°C) T1 T2 T3

16 ~ 18 +10 -3 -5 19 ~ 22 +8 -3 -7 23 ~ 26 +7 -3 -7 27 ~ 30 +6 -3 -8

There is a temperature shifting on T1, T2, and T3 if the operation mode judged is changed from Cooling/Soft Dry to Heating or vice verse.

Operation Mode change from Temperature shifts (°C)

Cooling/Soft Dry→Heating -2 Heating→Cooling/Soft Dry +2

Example of operation mode chart adjustment:

From the above table, if remote control setting temperature = 25,

T1 = 25 + 7 = 32; T2 = 25 - 3 = 22; T3 = 25 - 7 = 18

The operation mode chart for this example is as shown in below figure and the operation mode to be performed will depend on indoor intake air temperature and outdoor air temperature at the time when the judgment is made.

8.1.7. Indoor Fan Motor Operation

A. Basic Rotation Speed (rpm)

Required rotation speed for fan is set to respond to the remote control setting (10 rpm unit)

•

[Cooling, Dry, Fan]

Remote Control — — O O O O O — — —

Tab (rpm) PSHI SHI Hi Me+ Me Me- Lo Lo- SLo SSLo

E9DK 1320 1320 1280 1165 1050 935 820 760 720 710

E12DK 1460 1460 1420 1293 1165 1038 910 840 720 710

[Heating]

Remote Control — — O O O O O — — —

Tab (rpm) PSHi SSHi SHi Me+ Me Me- Lo Lo- SLo SSLo

E9DK 1440 1440 1400 1270 1140 1010 880 820 720 710

E12DK 1540 1540 1500 1395 1290 1185 1080 1010 720 710

B. Indoor Fan Control

i. Indoor fan control operation outline

1. Cooling / Dry

CS-E9DKDW CU-E9DKD / CS-E12DKD W CU-E12DKD

2. Heating

ii. Auto Fan Speed

1. Cooling

2. Heating

Note:

a. UP:

If move from Lo, the fan speed will be shifted to Maximum 1520 rpm.

•

If move from Maximum, the fan speed no change.

•

In up zone, 10 rpm is added for every 10s until Maximum 1520 rpm.

•

b. DOWN:

The fan speed will be decreased one step every 10 sec. until Minimum 1270 rpm.

•

c. Current Output Fixed:

Maintain at present fan speed.

•

d. Instantaneous Maximum:

Fan speed will be increased to maximum auto fan speed.

•

e. Temperature in ( ) is for Powerful Mode operation.

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C. Fan Motor Control

1. Motor specification

High voltage PWM Motor

2. Feedback Control

a. Number-of-rotations feedback

Immediately after the fan started, rpm is checked and duty is added, and feedback control is performed. For high voltage PWM motor, it is done once every 0.5 second.

b. Offset duty T max/min limit

High voltage PWM motor has maximum offset duty.

(Refer Indoor fan motor control basic rotation speed)

3. Abnormal Detection Control

Conditions:

a. Out of rhythm signal input

b. If feedback number of rotations exceeded #2550 r/min or when less than #50 r/min.

Control: Fans stop

Return: Restart after 5 seconds

* It will not detect the out of rhythm condition within 5s for phase control motor (PWM motor is when duty=0) after start.

A fan stops when condition (1) and (2) happen within 25.0 seconds after fan starting, and if this happens for continuously 7 times, it will not retry.

FM lock processing

→

4. Restart Prohibition Control

Restart is prohibited within 5s for phase control motor (PWM motor is when duty=0) after fan stop (except re-ON the power supply).

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D. Deodorizing Control

i. Control conditio n

Control at cooling/dry operation and auto fan speed.

No Deodorizing Control is performed during ON timer standby operation and during Anti-freezing control prevention.

ii. Operation

The odor status is arranged as below and it is shifted as follow.

* When COMP is ON 1→2→3

(Shift to 4 when COMP is OFF)

* When COMP is OFF 4→5→6→7→6

(Shift to 1 when COMP is ON)

* Start from 4 if the Thermostat is OFF during the start operation.

Odor Status 1 2 3 4 5 6 7 6.7.6... 1

Status Shift

according to COMP

Status Shift

according

to time (s) Dry zone ON

Fan Speed

Cooling

zone

Cooling

zone

Dry zone SLo

40 50 — 30 90 20 90 20.90.20...

OFF SSLo

ON OFF ON

Auto Fan Speed

SSLo OFF SSLo OFF SSLo.OFF...

←→

8.1.8. Outdoor Fan Motor Operation

Outdoor fan motor is operated with one fan speed only. It starts when compressor starts operation and it stops 30 seconds after compressor stops operation.

8.1.9. Airflow Direction

1. There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes).

2. 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).

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8.1.9.1. Vertical Airflow

Operation Mode Airflow Direction Vane Angle (°)

1 2 3 4 5

Heating Auto with Heat Exchanger A Upward fix 3

Temperature B Downward fix 64

C Upward fix 3 D Downward fix 3

Manual 3 17 33 49 63

Cooling, Soft Dry and Ion Auto 8~36

Manual 8 15 22 30 36

Mode Judgment in Auto Auto 8

Manual 8 15 22 30 36

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 depend s on the indoor heat exchanger temperature as Figure 1 below. 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.

8.1.9.2. Horizontal Airflow

1. Automatic horizontal airflow direction can be set using remote control; the vane swings left and right within the angles as stated below. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below.

Operation Mode Vane Angle (°)

Heating, with heat exchanger temperature A 65 ~ 115

B 90

Cooling, Soft Dry and Ion 65 ~ 115

2. Manual horizontal airflow direction can be set using remote control; the angles of the vane are as stated below and the positions of the vane are as Figure 2 above.

Pattern 1 2 3 4 5 Airflow Direction

Patterns at Remote Control

Vane Angle (°) 90 65 78 102 115

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8.1.10. Quiet operation (Cooling Mode/Cooling area of Dry Mode)

A. Purpose

To provide quiet cooling operation compare to normal operation.

B. Control condition

a. Quiet operation start condition

When “quiet” button at remote control is pressed.

•

Quiet LED illuminates.

b. Quiet operation stop condition

1. When one of the followin g conditions is satisfied, quiet operation stops:

a. Powerful button is pressed.

b. Stop by OFF/ON switch.

c. Timer “off” activates.

d. Quiet button is pressed again.

2. When quiet operation is stopped, operation is shifted to normal operation with previous setting.

3. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.

4. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode.

5. During quiet operation, if timer “on” activates, quiet operation maintains.

6. After off, when on back, quiet operation is not memorised.

C. Control contents

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

This is to reduce sound of Hi, Me, Lo for 3dB.

2. Fan speed for quiet operation is -1 step from setting fan speed.

8.1.10.1. Quiet operation (Heating)

A. Purpose

To provide quiet heating operation compare to normal operation.

B. Control condition

a. Quiet operation start condition

When “quiet” button at remote control is pressed.

•

Quiet LED illuminates.

b. Quiet operation stop condition

1. When one of the followin g conditions is satisfied, quiet operation stops:

a. Powerful button is pressed.

b. Stop by OFF/ON switch.

c. Timer “off” activates.

d. Quiet button is pressed again.

2. When quiet operation is stopped, operation is shifted to normal operation with previous setting.

3. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.

4. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode, except fan only mode.

5. During quiet operation, if timer “on” activates, quiet operation maintains.

6. After off, when on back, quiet operation is not memorised.

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