Panasonic CS-E21CKE, CS-E18CKE, CU-E21CKE, CU-E18CKE User Manual

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Order No. MAC0308013C2

Room Air Conditioner

CS-E18CKE CU-E18CKE CS-E21CKE CU-E21CKE

CONTENTS

Page Page

1 Features 2

2 Functions

3 Product Specifications

4 Dimensions

5 Refrigeration Cycle Diagram

6 Block Diagram

7 Wiring Diagram

8 Operation Details

8.1. BASIC FUNCTION

8.2. Protection Control Features

9 Operating Instructions

10 Installation And Servicing Air Conditioner Using R410A

10.1. OUTLINE

10.2. TOOL FOR INSTALLING / SERVICING REFRIGERANT

PIPING

10.3. REFRIGERANT PIPING WORK

10.4. INSTALLATION, TRANSFERRING, SERVICING 59

11 Installation Instructions

11.1. Safety Precautions

11.2. INDOOR UNIT

11.3. OUTDOOR UNIT

12 Servicing Information

12.1. Troubleshooting

12.2. Breakdown Self Diagnosis Function

12.3. Remote Control

12.4. Indoor Electronic Controllers Removal Procedures

12.5. Cross Flow Fan and Indoor Fan Motor Removal

Procedures

12.6. Outdoor Electronic Controller Removal Procedure

13 Technical Data

14 Exploded View

15 Replacement Parts List 85

16 Exploded View

17 Replacement Parts List

18 Electronic Circuit Diagram

18.1. REMOTE CONTROL

1 Features

18.2. PRINT PATTERNIN DOOR UNIT PRINTED CIRCUIT

BOARD

18.3. PRINT PATTERNO UTDOOR UNIT PRINTED CIRCUIT

BOARD VIEW

100

Product

•

− Microcomputer-controlled compressor operating

frequency

− Vertical and Horizontal Airflow Directions

− Five modes of operation selection

− Powerful Mode operation

− Delay ON Timer and OFF Timer

− Remote Control with illuminable buttons

− Power Monitor Display LED

− Catechin Air Purifying Filter

− Triple Deodorizing Filter

− Ionizer Mode Operation

− Quiet Mode Operation

Serviceability

•

− Washable Front Panel

− Breakdown Self Diagnosis function

Environmental Protection

•

− Non-ozone depletio n substances refrigerant (R410A)

Quality Improvement

•

− Gas leakage detection

− Deice operation

− Auto restart control

2 Functions

Remote Control

OFF/ON

MODE

POWERFUL

QUIET

Operation OFF / ON

Operation Mode Selection

•

HEAT

•

COOL DRY

•

FAN

Powerful Mode Operation

Quiet Mode Operation

Automatic Operation Heating Operation Cooling Operation Soft Dry Operation Fan Operation

FAN SPEED

TEMP

TIMER

OFF

∧ ∨

Illuminable

buttons

Indoor Fan Speed Selection

• Low

•

Medium-

• Medium

•

AUTO FAN

Medium+ High Automatic Fan Speed

Room Temperature Setting

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

Timer Setting

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

Time / Timer Setting

AIR SWING

Ion Mode Operation

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).

SET

CANCEL

Timer Operation Set / Cancel

• ON Timer and OFF Timer setting and cancellation.

• Hours and minutes setting.

CLOCK

Clock Setting

• Current time setting.

CHECK

Check Point

• Breakdown self diagnosis function.

RESET

Reset Point

• Clear memory data.

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 (4 type of transmission code).

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

Operation Indication Lamps (LED)

POWER

•

MONITOR

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

•

POWER

•

POWERFUL

•

QUIET

•

TIMER

(Green) ......

(Orange) ... Lights up when

(Orange) .... Lights up in Quiet

(Orange) .... Lights up in Timer

Lights up during compressor operation.

Mode Operation. Blinks in Ionizer error.

Lights up in operation, blinks in Automatic Operation Mode judging, deice, On Timer sampling and Hot Start operation.

Powerful Mode is selected.

Mode Operation.

Setting. Blinks in Self Diagnosis Control.

Five Operation Modes

• Automatic, Heating, Cooling, Soft Dry and Fan 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 extra 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

Outdoor Unit

Breakdown Self Diagnosis Function

Low Pressure Control (Gas Leakeage Detection)

Indoor Power Relay Control

Anti-Dew Formation Control

Anti Freezing Control

Anti-Cold Draft Control

Hot Start

Intake Air Temperature Control

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

High Pressure Control

Deodorizing Control

Deice Operation

Outdoor Air Temperature Control

Standby Control

Deice Operation

3 Product Specifications

Unit CS-E18CKE CU-E18CKE

Cooling Capacity kW

kcal/h

BTU/h

Heating Capacity kW

kcal/h

BTU/h

Moisture Removal l/h

Pint/h

Power Source Phase

Cycle

Airflow Method OUTLET

INTAKE

5.30 (0.90 - 6.00)

4,560 (770 - 5,160)

18,100 (3,070 - 20,500)

6.60 (0.90 - 8.00)

5,680 (770 - 6,880)

22,500 (3,070 - 27,300)

2.9

(6.1)

Single

230

SIDE VIEW TOP VIEW

Air Volume Indoor Air (Lo) m3/min (cfm) Cooling; 12.5 (440) —

Heating; 13.9 (490)

Indoor Air (Me) m3/min (cfm) Cooling; 14.0 (490) —

Heating; 15.5 (540)

Indoor Air (Hi) m3/min (cfm) Cooling; 15.6 (550) 40.0 (1,410)

Heating; 17.1 (600)

dB (A) Cooling; High 44, Low 37 Cooling; 47

Heating; High 44, Low 37 Heating; 47

Noise Level

Power level dB Cooling; High 57 Cooling; High 60

Heating; High 57 Heating; High 60

Electrical Data Input Power W Cooling; 1,650 (240 - 2,050)

Heating; 1,790 (280 - 2,650)

Running Current A Cooling; 7.4

Heating; 8.0

Piping Connection Port (Flare piping)

EER W/W Cooling; 3.21 (3.75 - 2.93)

BTU/hW Cooling; 11.0 (12.8 - 10.0)

COP W/W Heating; 3.69 (3.21 - 3.02)

BTU/hW Heating; 12.6 (11.0 - 10.3)

Starting Current A 8.0

inch inch

G ; Half Union 1/2”

L ; Half Union 1/4”

G ; 3-way valve 1/2”

L ; 2-way valve 1/4”

Unit CS-E18CKE CU-E18CKE

Pipe Size (Flare piping)

Drain Hose

Power Cord Length Number of core-wire

Dimensions Height inch (mm) 10 - 13/16 (275) 29 - 17/32 (750)

Net Weight lb (kg) 24 (11) 108 (49) Compressor Type — Involute scroll

Air Circulation Type Cross-flow Fan Propeller Fan

Heat Exchanger Description Evaporator Condenser

Refrigerant Control Device — Expansion Valve Refrigeration Oil (c.c) — RB68A (360) Refrigerant (R410A) kg (oz) — 1.18 (41.7) Thermostat Electronic Control — Protection Device Electronic Control Electronic Control

Capillary Tube Flow Rate l/min — —

Air Filter Material

Inner diameter mm 12 — Length m 0.65 —

Width inch (mm) 39 - 9/32 (998) 34 - 7/16 (875) Depth inch (mm) 8 - 9/32 (210) 13 - 19/32 (345)

Motor Type — Brushless (4-pole) Rated Output W — 900

Material ASHT-18 P.P

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

Rate Output W 30 40

Fan Speed Lo (Cool/Heat) rpm 1,150 / 1,270 —

Me (Cool/Heat) rpm 1,290 / 1,410 — Hi (Cool/Heat) rpm 1,440 / 1,560 660

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 16 Size (W × H × L) mm 810 × 315 × 25.4 849.3

Length mm — —

Inner Diameter mm — —

Style

inch inch

G (gas side) ; 1/2”

L (liquid side) ; 1/4”

2.1 m

3 core wires × 1.5 mm

2/15 2/34

P.P.

Honeycomb

G (gas side) ; 1/2”

L (liquid side) ; 1/4”

— —

× 714 × 36.4

878

—

•

Specifications are subjected to change without notice for further improvement.

Unit CS-E21CKE CU-E21CKE

Cooling Capacity kW

kcal/h BTU/h

Heating Capacity kW

kcal/h BTU/h

Moisture Removal l/h

Pint/h

Power Source Phase

Cycle

Airflow Method OUTLET

INTAKE

6.30 (0.90 - 7.10)

5,420 (770 - 6,110)

21,500 (3,070 - 24,200)

7.20 (0.90 - 8.50)

6,190 (770 - 7,310)

24,600 (3,070 - 29,000)

3.5

(7.4)

Single

230

SIDE VIEW TOP VIEW

Air Volume Indoor Air (Lo) m3/min (cfm) Cooling; 12.6 (440) —

Heating; 14.0 (490)

Indoor Air (Me) m3/min (cfm) Cooling; 14.5 (510) —

Heating; 15.8 (560)

Indoor Air (Hi) m3/min (cfm) Cooling; 16.6 (590) Cooling; 42.8 (1,510)

Heating; 17.7 (620) Heating; 41.5 (1,460)

dB (A) Cooling; High 45, Low 37 Cooling; 48

Heating; High 45, Low 37 Heating; 49

Noise Level

Power level dB Cooling; High 58 Cooling; High 61

Heating; High 58 Heating; High 62

Electrical Data Input Power W Cooling; 2,210 (240 - 2,540)

Heating; 2,100 (280 - 2,750)

Running Current A Cooling; 9.9

Heating; 9.4

Piping Connection Port (Flare piping)

Pipe Size (Flare piping)

EER W/W Cooling; 2.85 (3.75 - 2.80)

BTU/hW Cooling; 9.7 (12.8 - 9.5)

COP W/W Heating; 3.43 (3.21 - 3.09)

BTU/hW Heating; 11.7 (11.0 - 10.5)

Starting Current A 9.4

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”

Unit CS-E21CKE CU-E21CKE

Drain Hose

Power Cord Length Number of core-wire

Dimensions Height inch (mm) 10 - 13/16 (275) 29 - 17/32 (750)

Net Weight lb (kg) 24 (11) 112 (51) Compressor Type — Involute scroll

Air Circulation Type Cross-flow Fan Propeller Fan

Heat Exchanger Description Evaporator Condenser

Refrigerant Control Device — Expansion Valve Refrigeration Oil (c.c) — RB68A (360) Refrigerant (R410A) kg (oz) — 1.29 (45.5) Thermostat Electronic Control — Protection Device Electronic Control Electronic Control

Capillary Tube Flow Rate l/min — —

Air Filter Material

Inner diameter mm 12 — Length m 0.65 —

3 core wires × 1.5 mm

Width inch (mm) 39 - 9/32 (998) 34 - 7/16 (875) Depth inch (mm) 8 - 9/32 (210) 13 - 19/32 (345)

Motor Type — Brushless (4-pole) Rated Output W — 900

Material ASHT-18 P.P

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

Rate Output W 30 40

Fan Speed Lo (Cool/Heat) rpm 1,150 / 1,270 —

Me (Cool/Heat) rpm 1,330 / 1,440 — Hi (Cool/Heat) rpm 1,520 / 1,610 700 / 680

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 18 Size (W × H × L) mm 810 × 315 × 25.4 849.3

Length mm — —

Inner Diameter mm — —

Style

2.1 m

2/15 2/34

P.P.

Honeycomb

— —

× 714 × 36.4

878

—

•

Specifications are subjected to change without notice for further improvement.

4 Dimensions

5 Refrigeration Cycle Diagram

6 Block Diagram

7 Wiring Diagram

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 depend ing 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

Cooling/Soft Dry→Heating -2.0 Heating→Cooling/Soft Dry +2.0

Mode Shift: Temperature Shift (°C)

Table (b): Outdoor Air Temperature Shifting

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

Cooling/Soft Dry 38 X 1.50 2.00

Heating 21 X -2.25 -1.50

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

Manual Operation Auto Operation

30 X 38 1.25 1.25 23 X 30 1.25 1.25

X 23 1.75 1.75

17 X 21 -1.75 -1.00 13 X 17 -0.75 0.00

9 X 13 0.25 0.25

5 X 9 1.25 1.00 1 X 5 0.75 1.00

-3 X 1 1.50 1.00 X -3 1.50 1.00

X 20 0.0

X 20 +3.25

Table (d): Quiet (Lo) Mode Shifting

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

Cooling, Soft Dry 20 min X 50 min -3.0

Table (e): Fan Speed Shifting

Mode: Fan Speed: Temperature Shift (°C)

Cooling Lo -0.25

Soft Dry All +0.25 Heating Lo +1.50

Table (f): Start-Up Shifting

Mode within 60 Minutes from Start-up: Temperature Shift (°C) Cooling/Soft Dry -1.0 Heating +2.0

50 min X 110 min -4.0

110 min X 440 min -5.0

Me-, Me, Me+, Auto 0.00

Hi +0.25

Me-, Me, Me+, Auto +0.75

Hi +0.75

8.1.2. Compressor Operation Frequency

Intake Air Temperature - Internal Setting Temperature (°C) Freq. H

Zone Cooling & Soft Dry Heating Cooling Soft Dry Heating Remark

1 -2.0 1.5 1 1 1 2 -1.5 1.0 1 1 1 3 -1.0 0.5 14 8 11 4 -0.5 0.0 20 8 15 5 0.0 -0.5 27 8 22 6 0.5 -1.0 35 11 27 7 1.0 -1.5 43 11 36 8 1.5 -2.0 46 11 39 Fc, Fh

9 2.0 -2.5 46 11 39 Fc, Fh 10 2.5 -3.0 46 11 39 Fc, Fh 11 Nil -3.5 Nil Nil 39 Fh 12 Nil -4.0 Nil Nil 39 Fh

Operating Frequency Calculation Formula:

CompHz = Freq. A × Freq. H + Freq. C

Example Calculation:

Model No.: E18CK

Operation Mode: Cooling

When Intake Air Temperature - Internal setting Temperature:

1.5°C

CompHz = Freq. A × Freq. H + Freq. C

= 1.53 × 46 + 2.5 = 72 Hz (It cuts down less than a decimal point)

Cooling & Soft Dry E18CK E21CK

Freq. A Freq. C Freq. A Freq. C

Low Load (Freq. H 9) 1.2 5.0 1.7 7.0

High Load (Freq. H > 10) 1.53 2.5 2.0 4.0

Heating E18CK E21CK

Freq. A Freq. C Freq. A Freq. C

Low Load (Freq. H 11) 1.6 8.0 1.9 7.0

High Load (Freq. H > 12) 2.2 1.0 2.35 1.0

Freq. Range E18CK E21CK

Cooling Fc 72 96

Operation Range 12 ~ 86 12 ~ 102

Heating Fh 86 92

Operation Range 14 ~ 128 14 ~ 128

Remarks:

When Freq. H is equal to 46 (Cooling), 39 (Heating) or above, the Comp. may run at the freq. higher than Fc or Fh up to max. freq. operation.

Best Amenity Control

Every 90s (Cooling), 120s (Heating) maintain same zone Freq. H + 1 until Fc (46), Fh (39).

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 +0.5°C.

8.1.4. Soft Dry Operation

8.1.4.1. Thermostat control

• Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -2.5°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 > +1.5°C.

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

point -0.5°C.

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.

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 +8 -5 19 ~ 22 +8 +7 -7 23 ~ 26 +7 +6 -7 27 ~ 30 +6 +5 -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 + 6 = 31; 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) SHI Hi Me+ Me Me- Lo Lo- SLo SSLo

E18CK 1530 1440 1360 1290 1220 1150 850 760 630 E21CK 1610 1520 1420 1330 1240 1150 890 800 630

[Heating]

Remote Control — O O O O O — — —

Tab (rpm) SSHI SHi Me+ Me Me- Lo Lo- SLo SSLo

E18CK 1590 1560 1480 1410 1340 1270 850 400 300 E21CK 1640 1610 1520 1440 1350 1270 890 400 300

B. Indoor Fan Control

i. Indoor fan control operation outline

1. Cooling / Dry

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 (E21CK), 1480 rpm (E18CK).

• If move from Maximum, the fan speed no change.

• In up zone, 10 rpm is added for every 10s until Maximum 1520 rpm (E21CK), 1480 rpm (E18CK).

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.

iii. Max Capacity Condition

a) During Cooling operation, if all to the followin g condition is fulfilled , the indoor fan speed is set to Shi.

1. Indoor intake temperature

24°C.

2. Operation frequency 72 Hz (E18CK), 95 Hz (E21CK) & above.

3. Remote Control setting temperature 16°C.

4. Remote Control setting fan speed Hi.

5. Outdoor temperature

6. Operation start

30°C.

within 30 minutes.

* If any of above conditions is not valid, the condition is ended.

b) During Heating operation, if all to the followin g condition is fulfilled , the indoor fan speed is set to SSHi.

1. Indoor intake temperature is 17°C or above and less than 23°C.

2. Operation frequency 86 Hz (E18CK), 93 Hz (E21CK) & above.

3. Remote Control setting temperature 30°C.

4. Remote Control setting fan speed Hi.

5. Outdoor temperature < 4°C.

6. Operation start

2 hours.

* If any of above conditions is not valid, the condition is ended.

C. Fan Motor Control

i. Motor specification

High voltage PWM Motor

ii. Feedba ck Control

1. Rotation speed feedback

Immediately after the fan started, rpm is checked and duty is added, and feedback control is performed.

iii. Abnormal Detection

1. Condition **Step out signal input

2. Control * Fan stop

3. Return * Restart after 5s

Feedback rotation speed is more than 2550 rpm or below 50 rpm. However, 10s after fan start, rotation abnormality is not detected.

However, in case the fan is stopped by the above conditions within 25s after fan has started, and happened continuously for 7 times, restart will not be performed.

Indoor fan motor lock abnormal (H19)

→

iv. Restart Prohibition Control

Prohibit to restart within 5s after fan stop. (except when power is ON)

D. Deodorizing Control

i. Control condition

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→4

(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 4 5 4.5.4... 1

Status Shift

according to COMP

Status Shift

according

to time (s) Dry zone ON

Fan Speed

Cooling

zone

Cooling

zone

Dry zone OFF SLo OFF

40 50 — 20 90 20 90 .......

OFF

ON OFF ON

Auto Fan Speed

SLo

←→

OFF

SLo OFF .......

8.1.8. Outdoor Fan Motor Operation

Outdoor fan motor is operated with 15 fan speed. It starts when compressor starts operation and it stops 30 seconds after compressor stops operation.

Basic Rotation Speed

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).

Vertical Airflow

Operation Mode Airflow Direction Vane Angle (°)

1 2 3 4 5

Heating Auto with Heat Exchanger 17

Temperature 58

Manual 7 17 33 49 67

Cooling, Soft Dry and Fan, Ion Auto 7~37

Manual 7 17 25 33 41

Mode Judgment in Auto Auto 7

Manual 7 17 25 33 41

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. 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.

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 exchan ger temperature as Figure 1 below.

Operation Mode Vane Angle (°)

Heating, with heat exchanger temperature A 55 ~ 125

B 90

Cooling, Soft Dry and Fan, Ion 55 ~ 125

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 55 70 110 125

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 following conditio ns is satisfied, quiet operation stops:

a. Powerful button is pressed.

b. Stop by OFF/ON switch.

c. Timer “off” activates.

d. When change mode to fan only mode.

e. 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.

D. 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 -100 rpm from setting fan speed. (Cool and fan mode)

8.1.10.1. Quiet operation under Soft Dry operation (Dry area at Dry Mode)

Automatic Fan Speed (Dry operation)

Manual Fan Speed (Dry operation)

8.1.10.2. 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 following conditio ns is satisfied, quiet operation stops:

a. Powerful button is pressed.

b. Stop by OFF/ON switch.

c. Timer “off” activates.

d. When change mode to fan only mode.

e. 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.

C. Control contents

a. Fan Speed manual

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 -100 rpm from setting fan speed.

3. Fan Speed Auto

• If FM

-100 rpm reduce from normal Heating Auto Fan Speed

• If FM

maintain RPM

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

8.1.11. Powerful Mode Operation

When the powerful mode is selected, the internal setting temperature will shift to achieve the setting temperature quickly.

(a) Cooling Operation

(b) Soft Dry Operation

8.1.12. Delay ON Timer Control

Delay ON timer 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.

Seventy 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.

8.1.13. Delay OFF Timer Control

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

8.1.14. Auto Restart Control

1. 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.

2. This type of control is not applicable during ON/OFF Timer setting.

8.1.15. Indication Panel

LED POWER MONITOR POWER QUIET TIMER POWERFUL ION

Color Green Green Orange Orange Orange Green

Light ON Compressor ON Operation ON Quiet Mode ON Timer Setting ON Powerful Mode ON Ion Mode ON

Light OFF Compressor OFF Operation OFF Quiet Mode OFF Timer Setting OFF Powerful Mode OFF Ion Mode OFF

Note:

• If POWER LED is blinking, the possible operations of the unit are Hot Start, during Deice operation, operation mode

judgment, or delay ON timer sampling.

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

• If Ionizer, LED is blinking, there is an abnormality of Ionizer occurs.

Power Monitor LED Control Frequency

Lighting of 3 LED base on instructed running frequency from indoor unit to compressor at cool, dry & heating operation.

Position of LED

Cool, Dry

Instructed Hz No

Heat

Instructed Hz No

0 Hz 35 35 Hz 59 Hz 59

0 Hz 44 40 Hz 63 Hz 63

8.1.16. Auto Operation Switch

1. When the switch is pressed between 0 to 5 seconds, Auto Mode operation starts to function.

2. When the switch is pressed between 5 to 8 seconds, the unit is forced to operate in Cooling Mode.

3. When the switch is pressed between 8 to 11 seconds, the unit is forced to operate in Heating Mode.

4. When the switch is pressed between 11 to 16 seconds and together with the signal from remote control, the unit can be changed to different controlling setting (4 type of transmission codes).

5. When the switch is pressed between 16 to 21 seconds, either “H14” error detection selection mode or the remote control signal receiving sound can be cancelled or turned on.

8.1.17. Indoor Power Relay Control

Power relay will turn on during operation or in progress of stopping operation. Although operation stops, the power relay continues on for three minutes.

However, during instantaneous power failure (< 0.5s), power relay will turn off. Then, it will turn on 2 minutes after power recover and the unit will operate as previous operation condition.

8.1.18. Ionizer Operation

Purpose

To provide fresh air effect to users by discharging minus ion to air.

Control Condition

a. Ionizer Only Operation.

1. When air-conditioner unit is at “OFF” condition (standby) and ION operation button at remote control is pressed.

Fan & ionizer on, ION LED illuminates, but power LED maintain off. (1 → 2)

However, fan speed can be adjusted later by customer during this operation.

Airflow direction (Horizontal Vane) control:

Follow vane direction control at cooling mode.

Horizontal vane can be changed by customer during ion only operation.

b. Operation Mode + Ionizer Operation.

1. Ionising Operation Start Condition

When air conditioner unit is in “ON” condition (Heat, Cool, Dry, Fan, Auto mode) and ION operation button at remote control is pressed. Ionizer on & ION LED illuminates. (3 → 4)

Power LED also illuminates.

2. Ionising Operation Stop Condition

When one of the following condition is satisfied, ION operation stops.

a. Stopped by ON/OFF switch.

b. Timer OFF activates.

c. ION operation button is pressed again.

d. ION feedback signal shows error.

3. Ionizer operation status is not memorised by micon. After OFF, when operation is “ON” again, air conditioner operates

without ionizer operation.

c. Timer during ionizer operation

Refer to case study in next page for detail.

8.1.18.1. Ionizer Problem Detection Control

i. Purpose

To inform user of ionizer problems and detection.

ii. Two types of problem detection control:

Control Detection Method Protection Recovery

ERROR PROTECTION

(i) Actual ion: ON (i) Actual ion ON for 10s & OFF for

(ii) ion feedback signal:0V(ii) Within 24 counts, if anytime

BREAKDOWN PROTECTION

(i)

Actual ion: OFF

(ii)

ion feedback signal: 5V

30 min. continuously for 24 times (approx. 11 hr. 30 min.)

CONDITION becomes false then count is cleared.

(i) Actual ion OFF 2s (i)

8.1.18.2. Ionizer Operation case study

(i) Actual ion is permanently OFF & ion

LED is blinking.

(ii) Press remote control ion button for

a) ON: Ion LED blink & buzzer = beep b) OFF: Ion LED OFF & buzzer = beep

Case 1: During Air-Con. ON. Air-Cond OFF with abnormal no. H26 is activated with timer LED is blinking permanently.

Case 2: During Air-Con. OFF. Abnormal no. H26 is activated with

(i)

timer LED is blinking permanently for both cases 1 & 2.

(ii) Press remote control ion button for

a) ON: Ion LED blink b) OFF: Ion LED OFF

(iii) Press any remote control button to

a) ON: Buzzer = beep beep beep beep b) OFF: Buzzer = beep beep beep beep

(i) Press ON/OFF button

to OFF

(ii)

Reset power

(iii)

Off by force operation

(i) When anytime

CONDITION becomes false.

(ii) Once recovered, ion &

Timer LED stops blinking permanently.

(iii) Main power reset.

Case 1

8.2. Protection Control Features

8.2.1. Protection Control For All Operations

8.2.1.1. Time Delay Safety Control

1. The compressor will not start for three minutes after stop of operation.

2. This control is not applicable if the power supply is cut off and on again or after 4-way valve deices condition.

8.2.1.2. 30 Seconds Forced Operation

1. Once the compressor starts operation, it will not stop its operation for 30 seconds.

2. However, it can be stopped using remote control or Auto Switch at indoor unit.

8.2.1.3. Total Running Current Control

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 five seconds, the frequency instructed will be increased.

3. However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for three minutes.

E21CK E18CK

Operation Mode X(A) Y(A) X(A) Y(A) Cooling/Soft Dry (A) 11.0 15.0 8.8 15.0 Cooling/Soft Dry (B) 9.6 15.0 7.7 15.0 Heating 11.5 17.0 10.8 17.0

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

8.2.1.4. IPM (Power transistor) Prevention Control

A. Overheating Prevention Control

1. When the IPM temperature rises to 110°C, compressor operation will stop immediately.

2. Compressor operation restarts after three minutes the temperature decreases to 95°C.

B. DC Peak Current Control

1. When electric current to IPM exceeds set value of 25.0 ± 4.0 A, the compressor will stop operate. Then, operation will restart after three minutes.

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

3. If the set value is exceeded again within 30 seconds after the compressor starts, the operation will restart after one minute. If this conditio n repeats continuously for seven times, all indoor and outdoor relays will be cut off.

8.2.1.5. Compressor Overheating Prevention Control

Instructed frequency for compressor operation will be regulated by compressor top temperature. The changes of frequency are as below figure.

8.2.1.6. Low Pressure Prevention Control (Gas Leakage Detection)

1. When the conditions listed in below table occur, the compressor stops and restarts after three minutes.

2. If this phenomenon is continuously occurring for twice within 20 minutes, all indoor and outdoor relays will be cut off.

3. This control is not applicable for deice operation.

Conditions E18CK E21CK

Cooling/Soft Dry Heating Cooling/Soft Dry Heating

1. Compressor frequency (Hz) 86 86 102 93

2. Outdoor total running current (A) 1.5 1.5 1.5 1.5

3. Indoor heat exchanger temperature (°C) 20 25 20 25

Note: Conditions 1 and 2 needed to be happened continuously for 5 minutes.

8.2.1.7. CT Disconnection Detection

1. Control Starting Condition

a. Total Current is below 0.74 ~ 0.94 Amp.

b. Operating Frequency is 72 Hz (E18CK), 95 Hz (E21CK) +1 and above.

c. Continuously for 20s.

2. Control Contents

a. Abnormal signal transmitted to indoor unit after 3 minutes outdoor power is supplied. (Indoor unit stop)

3. Control Cancellation Condition

Starting condition, (1) is not fulfilled.

8.2.1.8. Low Frequency Protection Control 1

When the compressor operate at frequency lower than 22 Hz for 240 minutes, the operation frequency will be increased to 22 Hz for two minutes.

8.2.1.9. Low Frequency Protection Control 2

When all the below conditions occur, minimum value (Freq. MIN) for the frequency instructed to compressor will change to 30 Hz.

Temperature, T, for: Cooling/Soft Dry Heating Indoor intake air (°C) T 15 or T 30 T 14 or T 28 Outdoor air (°C) T 13 or T 38 T 4orT 24 Indoor heat exchanger (°C) T 30 T 0

8.2.1.10. Minimum Frequency Protection Control

• During cooling operation (Anti Freezing control, soft dry) carry out the following operation.

1. During remote control setting is less than 28 deg

Indoor Fan Speed

Above Hi minHz = 21

Above Me- minHz = 21

Less than Me- minHz = 18

Auto minHz = 16

2. During Powerful ON

minHz = 22

However, when less than thermo OFF for 120 sec. continuously, the above control will be cancel.

• During heating operation, operate the followings control.

1. During Remote Control setting is less than 18 deg

Indoor Fan Speed

Above Hi minHz = 30

Above Lo minHz = 25

Less than Lo minHz = 15

2. During Powerful ON

minHz = 35

However, when less than thermo OFF for 100 sec. continuously, the above control will be cancel.

8.2.2. Protection Control For Cooling & Soft Dry Operation

8.2.2.1. Outdoor Air Temperature Control

The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.

8.2.2.2. Cooling Overload Control

i. Pipe temperature limitation/restriction

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

• The compressor stop if outdoor pipe temperature exceed s 63°C

• If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95: outdoor high pressure rise protection)

ii. Electrical part temperature rise protection control

• To prevent electrical component temperature rise during cooling overload.

• Judgement condition is by outdoor temperature (sampled every 10s).

• Control contents:

Outdoor fan speed (switch to zone A and B minimum fan speed).

Outdoor total current (zone C) higher than the specified.

• Cancellation condition: When one of above is not satisfied.

8.2.2.3. Anti-Freezing Control

1. When indoor heat exchanger temperature is lower than 2°C continuously for six minutes, compressor will stop operating.

2. Compressor will resume its operation three minutes after the indoor heat exchanger is higher than 10°C.

3. At the same time, indoor fan speed increase +40 rpm compared to its normal operation.

4. If indoor heat exchanger temperature is higher than 10°C for five minutes, the fan speed will return to its normal operation.

8.2.2.4. Anti-Dew Formation Control

a) Control 1

• During anti-dew formation control, compressor operates at frequency shift as shown below when indoor fan speed is less than Me.

• This control is cancelled after started for 420 minutes, or remote control setting temperature or fan speed setting is changed.

b) Control 2

• When the following conditions occurs for 20 minutes continuously, anti-dew formation is controlled and air vane change Horizontal vane shift to 2nd position and Vertical vane shift to center position.

1. Indoor intake air temperature is 25°C or above and less than 29°C.

2. Outdoor air temperature is less than 30°C.

3. Air vane control: Manual Horizontal Airflow and Manual Vertical Airflow.

4. Fan speed is quiet Lo.

8.2.3. Protection Control For Heating Operation

8.2.3.1. Anti Cold Draft Control

Indoor fan speed varies in accordance to indoor heat exchanger temperature, based on type of air volume and direction, as shown below.

1. Manual Fan Speed

2. Auto Fan Speed

Note:

a. UP:

• If move from Lo, the fan speed will be shifted to Maximum 1520 rpm (E21CK), 1480 rpm (E18CK).

• If move from Maximum, the fan speed no change.

• In up zone, 10 rpm is added for every 10s until Maximum 1520 rpm (E21CK), 1480 rpm (E18CK).

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.

8.2.3.2. Intake Air Temperature Control

Compressor will operate at maximum of 128 Hz respectively if either one of the below conditions occur:

1. When the indoor intake air temperature is above 10°C and remote control setting fan speed is lower Me-.

2. When the indoor intake air temperature is 30°C or above.

8.2.3.3. Outdoor Air Temperature Control

The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the below figures. This control will begin one minute after the compressor starts.

8.2.3.4. Overload Protection Control

The compressor operating frequency is regulated in accordance to indoor heat exchan ger temperature as shown in below figures.

8.2.3.5. Outdoor Temperature Control

• Outdoor temperature is detected and the following control is perform.

• Control operates after more than 1 minute the compressor has started.

8.2.3.6. Deice Control

A. Deice operation (Normal Deice Operation)

1. Detection methods

Outdoor heat exchanger temperature sensor, timer.

2. Deice operation time chart

Notes

a. During deice operation, the relationship between outdoor pipe temperature and time T1 is such operation will

proceed to next stage.

b. The deice will be performed only after 1 hour from when the operation has started.

c. When Comp. OFF by the sequence No. 1, 6, 7 compressor can restart back without 3 minutes waits (immediate

restart).

Outdoor heat exchanger temperature

a 15°C b 18°C c 25°C

3. Explanation of operation

1) Before the deice is started, compressor frequency is set to the specified value for T0-timer.

2) After deice is started, the 4-way valve, OD Fan and ID fan are OFF.

3) After 4-way valve is OFF for 30 s, compressor frequency is set to the specified value.

4) Before deice is ended, if the outdoor heat exchanger temperature exceeds a°C, set compressor frequency and expansion valve to the specified values.

5) When outdoor heat exchanger temperature exceeds b°C, or 10.5 minutes has passed since the 4-way valve is OFF, operation at timer T5 will be started.

6) After the above 5) operation, if the specified time has passed, the deice operation ending signal will be produced. The comp. Hz is set to the specified value and at the same time outdoor fan motor ON signal is produced.

7) After T6 the deice ending signal is produced, 4-way valve is set to ON, indoor fan is ON, Compressor frequency is FREE, and return to normal heating operation.

4. Deice operation judgement condition

When any of below a, b, c, d condition is satisfied, deice signal is produced.

a. Continuously, outdoor heat exchanger temperature < 3°C for 120 minutes and outdoor heat exchanger temperature <

-5°C for 3 minutes and outdoor air temperature > -1°C and Comp. is ON.

b. Continuously, outdoor heat exchanger temperature < 3°C for 80 minutes and outdoor heat exchanger temperature < -

6°C for 3 minutes and outdoor air temperature > -1°C and Comp. is ON.

c. Continuously, outdoor heat exchanger temperature < 3°C for 40 minutes and outdoor heat exchanger temperature < -

7°C and outdoor air temperature

-3°C for 3 minutes and Comp. is ON.

d. Continuously, outdoor heat exchanger temperature < 3°C for 40 minutes and outdoor heat exchanger temperature < -

8°C for 3 minutes and outdoor air temperature < -3°C and Comp. is ON.

However, the first deice will start only after minimum of 60 minutes in operation.

(2nd deice and onward shall follow above conditions)

B. Auto clean deice

1. Purpose

To improve heating start-up operation by detecting the residual ice on OD heat exchanger and perform deice operation automatically before operation is started by ON Timer.

2. Control Content:

1). Auto deice is performed 15 min. before standby operation (pre-deice operation in 15 min.).

2). When below deice conditions are fulfilled , auto clean deice operation will start.

3). After auto clean deice is completed, standby operation is performed as per load.

4). When deice conditions are not fulfilled, auto clean deice will not happen and will continue with standby operation.

3. Deice conditio n:

OD air temp. t

0°C.

OD heat exchan ger temp.

0°C for 14 min.

-8°C for 10 min.

4. Auto clean deice time chart

Similar to deice operation 2 except for frequency values.

a. Detection methods

Outdoor heat exchanger temp. sensor, timer, indoor air temp. sensor.

b. Deice operation control time chart.

Notes

1. During deice operation, the relationship between outdoor pipe temperature and time T1 is such proceed to next operation.

2. The deice will be performed only after 1 hour from when the operation has started.

3. When Comp. OFF by the sequence No. 1, 6, 7 compressor can restart back without 3 minutes waits (immediate restart).

Outdoor heat exchanger pipe temperature

a 15°C b 18°C c 25°C

9 Operating Instructions

Ionizer

DO NOT TOUCH

Select

ON Timer Timer Timer

Current time OK? –> Setting: page 48

orSet time Confirm

OFF orSet time Confirm ON & OFF

Set time Confirm

Soaps Neutral household detergents

( pH7)

every 6 months

see page 44

see page 48

refer page 47

484849

NEVER install, remove or reinstall yourself

Do NOT pull out the plug by the cable

Do NOT insert finger or other objects into the unit! —> especially dangerous for children!

47 / 48

10 Installation And Servicing Air Conditioner Using R410A

10.1. OUTLINE

10.1.1. About R410A Refrigerant

1. Converting air conditioners to R410A Since it was declared in1974 that chlorofluoroca rbons (CFC), hydro chlorofluorocarbons (HCFC) and other substances pose a destructive danger to the ozone layer in the earth´s upper stratosphere (20 to 40 km above the earth), measures have been taken around the world to prevent this destruction. The R22 refrigerant which has conventionally been used in ACs is an HCFC refrigerant and, therefore, possesses this ozone- destroying potential. International regulations (the Montreal Protocol Ozone-Damaging Substances) and the domestic laws of various countries call for the early substitution of R22 by a refrigerant which will not harm the ozone layer.

• In ACs, the HFC refrigerant which has become the mainstream alternative called R410A.Compared with R22, the pressure

of R410A is approximately 1.6 times as high at the same refrigerant temperature, but the energy efficiency is about the same. Consisting of hydrogen (H), fluorine (F) and carbon (C), R410A is an HFC refrigerant. Another typical HFC refrigerant is R407C. While the energy efficiency of R407C is some what inferior to that of R410A, it offers the advantage of having pressure characteristics which are about the same as those of R22, and is used mainly in packaged ACs.

2. The characteristics of HFC (R410A) refrigerants

a. Chemical characteristics

The chemical characteristics of R410A are similar to those of R22 in that both are chemically stable, non-flammable refrigerants with low toxicity. However, just like R22, the specific gravity of R410A gas is heavier than that of air. Because of this, it can cause an oxygen deficiency if it leaks into a closed room since it collects in the lower area of the room. It also generates toxic gas when it is directly exposed to a flame, so it must be used in a well ventilated environment where it will not collect.

Table 1 Physical comparison of R410A and R22

Composition (wt%) R32/R125 (50/50) R22 (100) Boiling point (°C) -51.4 -40.8 Vaporizing pressure (25°C) 1.56 Mpa (15.9 kgf/cm2) 0.94 Mpa (9.6 kgf/cm2) Saturated vapor density 64.0 kg/m Flammability Non-flammable Non-flammable Ozone-destroying point (ODP) 0 0.005 Global-warming point (GWP) 1730 1700

R410A R22

44.4 kg/m

b. Compositional change (pseudo-azeotropic characteristics)

R410A is a pseudo-azeotropic mixture comprising the two components R32 and R125. Multi-component refrigerants with these chemical characteristics exhibit little compositional change even from phase changes due to vaporization 9or condensation), which means that there is little change in the circulating refrigerant composition even when the refrigerant leaks from the gaseous section of the piping. Accordingly, R410A can be handled in almost the same manner as the single-component refrigerant R22. However, when charging, because there is a slight change in composition between the gas phase and the liquid phase inside a cylinder or other container, charging should basically begin with the liquid side.

c. Pressure characteristics

As seen in Table 2, the gas pressure of R410A is approximately 1.6 times as high as that of R22 at the same refrigerant temperature, which means that special R410A tools and materials with high-pressure specifications must be used for all refrigerant piping work and servicing.

Table 2 Comparison of R410A and R22 saturated vapor density

Refrigerant Temperature (°C) R410A R22

-20 0.30 0.14 0 0.70 0.40

20 1.35 0.81 40 2.32 1.43 60 3.73 2.33 65 4.15 2.60

Unit: MPa

d. R410A refrigerating machine oil

Conventionally, mineral oil or a synthetic oil such as alkylbenzene has been used for R22 refrigerating machine oil. Because of the poor compatibility between R410A and conventional oils like mineral oil, however, there is a tendency for the refrigerating machine oil to collect in the refrigerating cycle. For this reason, polyester and other synthetic oils which have a high compatibility with R410A are used as refrigerating machine oil. Because of the high hygroscopic property of synthetic oil, more care must be taken in its handling than was necessary with conventional refrigerating machine oils. Also, these synthetic oils will degrade if mixed with mineral oil or alkylbenzene, causing clogging in capillary tubes or compressor malfunction. Do not mix them under any circumstances.

10.1.2. Safety Measure When Installing / Receiving Refrigerant Piping

Cause the gas pressure of R410A is approximately 1.6 times as high as that of R22, a mistake in installation or servicing could result in a major acciden t. It is essential that you use R410a tools and materials, and that you observe the following precautions to ensure safety.

1. Do not use any refrigerant other than R410A in ACs that have been used with R410A .

2. If any refrigerant gas leaks while you are working, ventilate the room. Toxic gas may be generated if refrigerant gas is exposed to a direct flame.

3. When installing or transferring an AC, do not allow any air or substance other than R410A to mix into the refrigeration cycle. If it does, the pressure in the refrigeration cycle can become abnormally high, possibly causing an explosion and/or injury.

4. After finishing the installation, check to make sure there is no refrigerant gas leaking.

5. When installing or transferring an AC, follow the instructions in the installation instructions carefully. Incorrect installation can result in an abnormal refrigeration cycle or water leakage, electric shock, fire, etc.

6. Do not perform any alterations on the AC unit under any circumstances. Have all repair work done by a specialist. Incorrect repairs can result in an water leakage, electric shock, fire, etc.

10.2. TOOL FOR INSTALLING / SERVICING REFRIGERANT PIPING

10.2.1. Necessary Tools

In order to prevent an R410A AC from mistakenly being charged with any other refrigerant, the diameter of the 3-way valve service port on the outdoor unit has been changed. Also, to increase its ability to withstand pressure, the opposing dimensions have been changed for the refrigerant pipe flaring size and flare nut. Accordingly, when installin g or servicing refrigerant piping, you must have both the R410A and ordinary tools listed below.

Type of work Ordinary tools R410A tools

Flaring Flaring tool (clutch type), pipe cutter,

Bending, connecting pipes Torque wrench (nominal diameter 1/4,

Air purging Vacuum pump Hexagonal wrench

Gas leak inspection Gas leak inspection fluid or soapy water Electric gas leak detector for HFC

*1) You can use the conventional (R22) flaring tool. If you need to buy a new tool, buy the R410A type.

*2) Use when it is necessary to detect small gas leaks.

For other installation work, you should have the usual tools, such as screwdrivers (+,-), a metal-cutting saw, an electrical drill, a hole core drill (65 or 70 dia.), a tape measure, a level, a thermometer, a clamp meter, an insulation tester, a voltmeter, etc.

Type of work Ordinary tools R410A tools

Refrigerant charging Electronic scale for refrigerant charging

Brazing (Replacing refrigerating cycle part*1)

Table 3 Tools for installation, transferring or replacement

reamer

3/8,1/2) Fixed spanner (opposing sides 12 mm, 17 mm, 19 mm)Adjustable wrench, Spring bender

(opposing sides 4 mm)

Table 4 Tools for serving

Nitrogen blow set (be sure to use nitrogen blowing for all brazing), and brazing), and brazing machine

Copper pipe gauge for clearance Adjustment, flaring tool (clutch type)*1)

Manifold gauge, charging hose, vacuum pump adaptor

refrigerant*2)

Refrigerant cylinder Charging orifice and packing for refrigerant cylinder

*1) Always replace the dryer of the outdoor unit at the same time. The replacement dryer is wrapped in a vacuum pack. Replace it last among the refrigerating cycle parts. Start brazing as soon as you have opened the vacuum pack, and begin the vacuuming operation within 2 hours.

10.2.2. R410A Tools

1. Cooper tube gauge for clearance adjustment (used when flaring with the conventional flaring tool (clutch type))

• This gauge makes it easy to set the clearance for the

copper tube to 1.0-1.5 mm from the clamp bar of the flaring tool.

2. Flaring tool (clutch type)

• In the R410A flaring tool, the receiving hole for the

clamp bar is enlarged so the clearance from the clamp bar can be set to 0-0.5 mm, and the spring inside the tool is strengthened to increase the strength of the pipeexpanding torque. This flaring tools can also be used with R22 piping, so we recommend that you select it if you are buying a new flaring tool.

Fig. 1 Copper tube gauge for clearance adjustment

Fig. 2 Flaring tool (clutch type)

3. Torque wrenches

Fig. 3 Torque wrenches

Table 5

Conventional wrenches R410A wrenches For 1/4 (opposite side x torque) 17 mm x 18 N.m (180 kgf.cm) 17 mm x 18 N.m (180 kgf.cm) For 3/3 (opposite side x torque) 22 mm x 42 N.m (180 kgf.cm) 22 mm x 42 N.m (180 kgf.cm) For 1/2 (opposite side x torque) 24 mm x 55 N.m (180 kgf.cm) 26 mm x 55 N.m (180 kgf.cm)

4. Manifold gauge

• Because the pressure is higher for the R410A type, the conventional type cannot be used.

Table 6 Difference between R410A and conventional high / low-pressure gauges

High-pressure gauge (red) -76 cmHg - 35 kgf/cm

High-pressure gauge (blue) -76 cmHg - 17 kgf/cm

Conventional wrenches R410A wrenches

-0.1 - 5.3 Mpa -76 cmHg - 53 kgf/cm

-0.1 - 3.8 Mpa -76 cmHg - 38 kgf/cm

• The shape of the manifold ports has been changed to prevent the possibility of mistakenly charging with another type of refrigerant.

Table 7 Difference between R410A and conventional manifold port size

Port size 7/6 UNF 20 threads 1/2 UNF 20 threads

Conventional gauges R410A gauges

5. Charging hose

• The pressure resistance of the charging hose has been raised to match the higher pressure of R410A. The hose material has also been changed to suit HFC use, and the size of the fitting has been changed to match the manifold ports.

Fig. 4 Manifold gauge charging hose

Table 8 Difference between R410A and conventional charging hoses

Pressure resistance

Material NBR rubber HNBR rubber Nylon coating inside

Working pressure 3.4 MPa (35 kgf/cm3) 5.1 MPa (52 kgf/cm3) Bursting pressure 17.2 MPa (175 kgf/cm3) 27.4 MPa (280 kgf/cm3)

Conventional hoses R410A hoses

6. Vacuum pump adaptor

• When using a vacuum pump for R410A, it is necessary to install an electromagnetic valve to prevent the vacuum pump oil from flowing back into the charging hose. The vacuum pump adaptor is installed for that purpose. if the vacuum pump oil (mineral oil) becomes mixed with R410A, it will damage the unit.

7. Electric gas leak detector for HFC refrigerant

• The leak detector and halide torch that were used with CFC and HCFC cannot be used with R410A (because there is no chlorine in the refrigerant).

• The present R134a leak detector can be used, but the detection sensitivity will be lower (setting the sensitivity for R134a at 1, the level for R410A will drop to 0.6).

• For detecting small amounts of gas leakage, use the electric gas leak detector for HFC refrigerant. (Detection sensitivity with R410A is about 23 g/year).

Fig. 5 Vacuum pump adaptor

Fig. 6 Electric gas leak detector for HFC refrigerant

8. Electronic scale for refrigerant charging

• Because of the high pressure and fast vaporizing speed of R410A, the refrigerant cannot be held in a liquid phase inside the charging cylinde r when charging is done using the charging cylinde r method, causing bubbles to form in the measurement scale glass and making it difficult to see the reading. (Naturally, the conventional R22 charging cylinde r cannot be used because of the differences in the pressure resistance, scale gradation, connecting port size, etc.)

• The electronic scale has been strengthened by using a structure in which the weight detector for the refrigerant cylinder is held by four supports. It is also equipped with two connection ports, one for R22 *7/16 UNF, 20 threads) and one for R410A (1/2 UNF, 20 threads), so it can also be used for conventional refrigerant charging.

• There are two types of electronic scales, one for 10-kg cylinders and one for 20-kg cylinders. (The 10-kg cylinder is recommended.)

Refrigerant charging is done manually by opening and closing the valve.

9. Refrigerant cylinders

• The R410A cylinders are labeled with the refrigerant name, and the coating color of the cylinde r protector is pink, which is the color stipulated by ARI of the U.S.

• Cylinder equipped with a siphon tube are available to allow the cylinder to stand upright for liquid refrigerant charging.

Fig. 7 Electronic scale for refrigerant charging

10. Charging orifice and packing for refrigerant cylinde rs

• The charging orifice must match the size of the charging hose fitting (1/2 UNF, 20 threads).

• The packing must also be made of an HFC-resistant material.

10.2.3. R410A Tools Which Are Usable for R22 Models

Table 9 R410A tools which are usable for R22 models

R410A tools Usable for R22 models (1) Copper tube gauge for clearance adjustment OK (2) Flaring tool (clutch type) OK (3) Manifold gauge NG (4) Charging hose NG (5) Vacuum pump adaptor OK (6) Electric gas leak detector for HFC refrigerant NG (7) Electronic scale for refrigerant charging OK (8) Refrigerant cylinder NG (9) Charging orifice and packing for refrigerant cylinder NG

Fig. 8 Refrigerant cylinders

Fig. 9 Charging orifice and packing

10.3. REFRIGERANT PIPING WORK

10.3.1. Piping Materials

It is recommended that you use copper and copper alloy jointless pipes with a maximum oil adherence of 40 mg/10m. Do not used pipes that are crushed, deformed, or discolored (especially the inside surface). If these inferior pipes are used, impurities may clog the expansion valves or capillaries. Because the pressure of ACs using R410A is higher than those using R22, it is essential that you select materials that are appropriate for these standards. The thickness of the copper tubing used for R410A is shown in Table 10. Please be aware that tubing with a thickness of only 0.7 mm is also available on the market, but this should never be used.

Table 10 Difference between R410A and conventional copper tube

Soft pipe Thickness (mm)

Nominal diameter Outside diameter (mm) R410A (Reference) R22

1/4 6.35 0.80 0.80 3/8 9.52 0.80 0.80 1/2 12.7 0.80 0.80

10.3.2. Processing and Connecting Piping Materials

When working with refrigerant piping, the following points must be carefully observed: no moisture od dust must be allowed to enter the piping, and there must be no refrigerant leaks.

1. Procedure and precautions for flaring work

a. Cut the pipe

Use a pipe cutter, and cut slowly so the pipe will not be deformed.

b. Remove burrs and clean shavings from the cut surface

If the shape of the pipe end is poor after removing burrs, or if shavings adhere to the flared area, it may lead to refrigerant leaks. To prevent this, turn the cut surface downward and remove burrs, then clean the surface, carefully.

c. Insert the flare nut (be sure to used the same nut that is

used on the AC unit)

d. Flaring

Check the clamp bar and the cleanliness of the copper pipe. Be sure to sued the clamp bar to do the flaring with accuracy. Use either an R410A flaring tool, or a conventional flaring tool. flaring tools come in different sizes, so be sure to check the size before using. When using a conventional flaring tool, use the copper pipe gauge for clearance adjustment, etc., to ensure the correct A dimension (see Fig. 10)

Fig. 10 Flaring dimensions

Fig. 11 Relation between the flare nut structure and flaring tool end

Nominal

diameter

1/4 6.35 0.8 0 - 0.5 1.0 - 1.5 1.5 - 2.0 3/8 9.52 0.8 0 - 0.5 1.0 - 1.5 1.5 - 2.0 1/2 12.70 0.8 0 - 0.5 1.0 - 1.5 2.0 - 2.5

Outside

diameter

(mm)

Table 11 R410A flaring dimensions

Wall thickness

(mm)

R410A flaring

tool, clutch type

A (mm)

Conventional flaring tool

Clutch type Wing-nut type

Nominal

diameter

1/4 6.35 0.8 0 - 0.5 0.5 - 1.0 1.0 - 1.5 3/8 9.52 0.8 0 - 0.5 0.5 - 1.0 1.0 - 1.5 1/2 12.70 0.8 0 - 0.5 0.5 - 1.0 1.5 - 2.0

Nominal

diameter

1/4 6.35 0.8 9.1 9.2 6.5 13 17 3/8 9.52 0.8 13.2 13.5 9.7 20 22 1/2 12.70 0.8 16.6 16.0 12.9 23 26

Nominal

diameter

1/4 6.35 0.8 9.0 9.2 6.5 13 17 3/8 9.52 0.8 13.0 13.5 9.7 20 22 1/2 12.70 0.8 16.2 16.0 12.9 20 24

Outside

diameter

(mm)

Outside

diameter (mm)

Outside

diameter (mm)

Table 13 R410A flaring and flare nut dimensions Unit: mm

Wall thickness

(mm)

Table 14 R410A flaring and flare nut dimensions Unit: mm

Wall thickness

(mm)

Table 12 R410A flaring dimensions

Wall thickness

(mm)

A +0, -0.4 B

R410A flaring

tool, clutch type

dimension

A (mm)

Conventional flaring tool

Clutch type Wing-nut type

dimension

Flare nut

width

Flare nut

width

2. Procedure and precautions for flare connection

a. Check to make sure there are no scratches, dust, etc., on the flare and union.

b. Align the flared surface with the axial center of the union.

c. Use a torque wrench, and tighten to the specified torque. The tightening torque for R410A is the same as the conventional

torque value for R22. Be careful, because if the torque is too weak, it may lead to a gas leak. If it is too strong, it may split the flare nut or make it impossible to remove the flare nut.

Nominal

diameter

1/4 6.35 14 - 18 (140 - 180) 18 (180) 3/8 9.52 33 - 42 (330 -420) 42 (420) 1/2 12.70 55 (550) 55 (550)

Table 15 R410A tightening torque

Outside

diameter (mm)

Tightening torque

N.m (kgf.cm)

Torque wrench tightening torque

N.m (kgf.cm)

10.3.3. Storing and managing Piping Materials

1. Types of piping and their storage The following is a general classification of the refrigerant pipe materials used for ACs.

Because the gas pressure of R410A is approximately 1.6 times as high as that of R22, copper pipes with the thickness shown in Table 10, and with minimal impurities must be used. Care must also be taken during storage to ensure that pipes are not crushed, deformed, or scratched, and that no dust, moisture or other substance enters the pipe interior. When storing sheathed copper pipes or plain copper pipes, seal the openings by pinchin g or taping them securely.

2. Makings and management

a. Sheathed copper pipes and copper-element pipes

When using these pipes, check to make sure that they are the stipulated thickness. For flare nuts, be sure to used the same nut that is used on the AC unit.

b. Copper pipes

Use only copper pipes with the thickness given in table 10, and with minimal impurities. Because the surface of the pipe is exposed, you should take special care, and also take measures such as marking the pipes to make sure they are easily distinguished from other piping materials, to prevent mistaken use.

3. Precautions during refrigerant piping work Take the following precautions on-site when connecting pipes. (Keep in mind that the need to control the entry of moisture and dust is even more important that in conventional piping).

a. Keep the open ends of all pipes sealed until connection with AC equipment is complete.

b. Take special care when doing piping work on rainy days. The entering of moisture will degrade the refrigerating machine oil,

and lead to malfunctions in the equipment.

c. Complete all pipe connections in as short a time as possible. If the pipe must be left standing for a long time after removing

the seal, it must be thoroughly purged with nitrogen, or dried with a vacuum pump.

10.4. INSTALLATION, TRANSFERRING, SERVICING

10.4.1. Inspecting Gas Leaks with a Vacuum Pump for New Installations (Using New

Refrigerant Piping)

1. From the viewpoint of protecting the global environment, please do not release refrigerant into the atmosphere.

a. Connect the projecting side (pin-pushing side) of the charging hose for the manifold gauge to the service port of the 3-way

valve. (1)

b. Fully open the handle Lo of the manifold gauge and run the vacuum pump. (2) (If the needle of the low-pressure gauge

instantly reaches vacuum, re-check step a).)

c. Continue the vacuum process for at least 15 minutes, then check to make sure the low-pressure gauge has reached -0.1

MPa (-76 cmHg). Once the vacuum process has finished, fully close the handle Lo of the manifold gauge and stop the vacuum pump operation, then remove the charging hose that is connected to the vacuum pump adaptor. (Leave the unit in that conditio n for 1-2 minutes, and make sure that the needle of the manifold gauge does not return.) (2) and (3)

d. Turn the valve stem of the 2-way valve 90 counter-clockwise to open it, then, after 10 seconds, close it and inspect for a gas

leak (4)

e. Remove the charging hose from the 3-way valve service port, then open both the 2-way valve and 3-way valve. (1) (4) (Turn

the valve stem in the counter-clockwise direction until it gently makes contact. Do not turn it forcefully).

f. Tighten the service port cap with a torque wrench (18 N.m (1.8 kgf.m)). (5) Then tighten the 2-way valve and 3-way valve

caps with a torque wrench (42 N.m (4.2 kgf.m)) or (55 N.m (5.5 kgf.m)).

g. After attaching each of the caps, inspect for a gas leak around the cap area. (5) (6)

Precautions

• Be sure to read the instructions for the vacuum pump,

vacuum pump adaptor and manifold gauge prior to use, and follow the instructions carefully.

• Make sure that the vacuum pump is filled with oil up to

the designated line on the oil gauge.

• The gas pressure back flow prevention valve on the

charging hose is generally open during use. When you are removing the charging hose from the service port, it will come off more easily if you close this valve.

Fig. 12 Vacuum pump air purging configuration

10.4.2. Transferring (Using New Refrigerant Piping)

1. Removing the unit

a. Collecting the refrigerant into the outdoor unit by pumping down

The refrigerant can be collected into the outdoor unit (pumping down) by pressing the TEST RUN button, even when the temperature of the room is low.

• Check to make sure that the valve stems of the 2-way valve and 3-way valve have been opened by turning them counter- clockwise. (Remove the valve stem caps and check to see that the valve stems are fully opened position. Always use a hex wrench (with 4-mm opposing sides) to operate the valve stems.)

• Press the TEST RUN button on the indoor unit, and allow preliminary for 5-6 minutes. (TEST RUN mode)

• After stopping the operation, let the unit sit for about 3 minutes, then close the 2-way valve by turning the valve stem in

the clockwise direction.

• Press the TEST RUN button on the indoor unit again, and after 2-3 minutes of operation, turn the valve stem of the 3- way valve quickly in the clockwise direction to close it, then stop the operation.

• Tighten the caps of the 2-way valve and 3-way valve to the stipulated torque.

• Remove the connection pipes (liquid side and gas side).

2. Installing the unit Install the unit using new refrigerant piping. Follow the instructions in section 4.1 to evacuate the pipes connecting the indoor and outdoor units, and the pipes of the indoor unit, and check for gas leaks.

10.4.3. AC Units Replacement (Using Existing Refrigerant Piping)

When replacing and R410A AC unit with another R410A AC unit, you should re-flare the refrigerant piping. Even though the replacement AC unit uses the R410A, problems occur when, for example, either the AC unit maker or the refrigerating machine oil is differen t. When replacing an R22 AC unit with an R410A AC unit, the following checks and cleaning procedures are necessary but are difficult to do because of the chemical characteristics of the refrigerating machine oil (as described in items c) and d) of section

10.1.1.(2)). In this case, you should use new refrigerant piping rather than the existing piping.

1. Piping check Because of the different pressure characteristics of R22 and R410A, the design pressure for the equipment is 1.6 times different. the wall thickness of the piping must comply with that shown in Table 10, but this is not easy to check. Also, even if the thickness is correct, there may be flattened or bent portions midway through the piping due to sharp curves. Buried sections of the piping also cannot be checked.

2. Pipe cleanin g A large quantity of refrigerating machine oil (mineral oil) adheres to existing pipes due to the refrigeration cycle circulation. If the pipes are used just as they are for the R410A cycle, the capacity will be lowered due to the incompatibility of this oil with the R410A, or irregularities may occur in the refrigeration cycle. For this reason, the piping must be thoroughly cleaned, but this is difficult with the present technology.

10.4.4. Refrigerant Compatibility (Using R410A Refrigerant in R22 ACs and Vice Versa)

Do not operate an existing R22 AC with the new R410A refrigerant. Doing so would result in improper functioning of the equipment or malfunction, and might lead to a major accident such as an explosi on in the refrigeration cycle. Similarly, do not operate an R410A AC with R22 refrigerant. The chemical reaction between the refrigerating machine oil used in R410A ACs and the chlorine that is contained in R22 would cause the refrigerating machine oil to degrade and lead to malfunction.

10.4.5. Recharging Refrigerant During Servicing

When recharging is necessary, insert the specified amount of new refrigerant in accordance with the following procedure.

1. Connect the charging hose to the service port of the outdoor unit.

2. Connect the charging hose to the vacuum pump adaptor. At this time, fully open the 2-way valve and 3-way valve.

3. Fully open the handle Lo of the manifold gauge, turn on the power of the vacuum pump and continue the vacuum process for at least one hour.

4. Confirm that the low pressure gauge shows a reading of -0.1 Mpa (-76 cmHg), then fully close the handle Lo, and turn off the vacuum pump. Wait for 1-2 minutes, then check to make sure that the needle of the Low pressure gauge has not returned. See Fig. 13 for the remaining steps of this procedure.

5. Set the refrigerant cylinde r onto the electronic scale, then correct the hose the cylinder and to the connection port for the electronic scale. (1)(2)

Precaution:

Be sure to set up the cylinder for liquid charging. If you use a cylinder equipped with a siphon tube, you can charge the liquid without having to turn the cylinder around

6. Remove the charging hose of the manifold gauge from the vacuum pump adaptor, and connect it to the connection port of the electronic scale. (2)(3)

7. Open the valve of the refrigerant cylinder, then open the charging valve slightly and close it. Next, press the check valve of the manifold gauge and purge the air. (2)(4) (Watch the liquid refrigerant closely at this point.)

8. After adjusting the electronic scale to zero, open the charging valve, then open the valve Lo of the manifold gauge and charge with the liquid refrigerant. (2)(5) (Be sure to read the operating instructions for the electronic scale.)

9. If you cannot charge the stipulated amount, operate the unit in the cooling mode while charging a little of the liquid at a time (about 150 g/time as a guideline). If the charging amount is insufficient from one operation, wait about one minute, then use the same procedure to do the liquid charging again.

Precaution:

Never use the gas side to allow a larger amount of liquid refrigerant to be charged while operating the unit.

10. Close the charging valve, and after charging the liquid refrigerant inside the charging hose, fully close the valve Lo of the manifold gauge, and stop the operation of the unit. (2)(5)

11. Quickly remove the charging hose from the service port. (6) If you stop midway through, the refrigerant that is in the cycle will be discharged.

12. After putting on the caps for the service port and operating valve, inspect around the caps for a gas leak. (6)(7)

Fig. 13 Re-charging refrigerant

10.4.6. Brazing

As brazing requires sophisticated techniques and experiences, it must be performed by a qualified person. In order to prevent the oxide film from occurring in the pipe interior during brazing, it is effective to proceed with brazing while letting dry nitrogen gas (N2) flow.

1. Attach a reducing valve to the nitrogen gas cylinder.

2. Attach a reducing valve to the nitrogen gas cylinder.

3. Apply a seal onto the clearance between the piping and inserted pipe for the nitrogen gas in order to prevent the nitrogen gas from flowing backward.

4. When the nitrogen gas is flowing, be sure to keep the piping end open.

5. Adjust the flow rate of nitrogen gas so that it is lower than 0.05 m

6. After taking the steps above, keep the nitrogen gas flowing until the piping cools down to a certain extent (i.e. temperature at which pipes are touchable with finger).

7. Completely remove the flux after brazing.

/h, or 0.02 MPa (0.2 kgf/cm2) by means of the reducing valve.

Cautions during brazing

1. General Caution s

a. The brazing strength should be high as required.

b. After operation, airtightness should be kept under pressurized condition.

c. During brazing do not allow component materials to become damaged due to overheating.

d. The refrigerant pipe work should not become blocked with scale or flux.

e. The brazed part should not restrict the flow in the refrigerant circuit.

f. No corrosion should occur from the brazed part.

2. Preventing of Overheating

Due to heating, the interior and exterior surfaces of treated metal may oxidize. Especially, when the interior of the refrigerant circuit oxidizes due to overheating, scale occurs and stays in the circuit as dust, thus exerting a fatally adverse effect. So, make brazing at adequate brazing temperature and with minimum of heating area.

3. Overheating Protection

In order to prevent components near the brazed part from overheating damaged or quality deterioration due to flame or heat, take adequate steps for protection such as (1) by shielding with a metal plate, (2) by using a wet cloth, and (3) by means of heat absorbent.

4. Movement during Brazing

Eliminate all vibration during brazing to protect brazed joints from cracking and breakage.

5. Oxidation Preventative

In order to improve the brazing efficiency, various types of antioxidant are available on the market. However, the constituents of these are widely varied, and some are anticipated to corrode the piping materials, or adversely affect HFC refrigerant, lubricating oil, etc. Exercise care when using an oxidation preventive.

10.4.7. Servicing Tips

The drier must also be replaced whenever replacing the refrigerant cycle parts. Replacing the refrigerant cycle parts first before replacing the drier. The drier is supplied in a vacuum pack. Perform brazing immediately after opening the vacuum pack, and then start the vacuum within two hours. In addition, the drier also needs to be replaced when the refrigerant has leaked completely. (Applicable for drier models only)

11 Installation Instructions

Required tools for Installation Works

1. Philips screw driver 5. Spanner 9. Gas leak detector 13. Multimeter

2. Level gauge 6. Pipe cutter 10. Measuring tape 14. Torque wrench

3. Electric drill, hole core drill (ø70 mm)

4. Hexagonal wrench (4 mm) 8. Knife 12. Megameter 16. Gauge manifold

7. Reamer 11. Thermometer 15. Vacuum pump

11.1. Safety Precautions

•

Read the following “SAFET Y PRECAUTIONS” carefully before installation.

•

Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model to be 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 due to ignoring of the instruction will cause harm or damage, and the seriousness is classified by the followin g indications.

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

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

18 N●m (1.8 kgf●m) 55 N●m (5.5 kgf●m) 65 N●m (6.5 kgf●m)

The items to be followed are classified by the symbols:

Symbol with background white denotes item that is PROHIBITE D from doing.

•

Carry out test running to confirm that no abnormality occurs after the installation. 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.

1. Engage dealer or specialist for installation. If installation done by the user is defective, it will cause water leakage, electrical shock or fire.

2. Install according to this installation instruction strictly. If installation is defective, it will cause water leakage, electrical shock or fire.

3. Use the attached accessories parts and specified parts for installation. Otherwise, it will cause the set to fall, water leakage, fire or electrical shock.

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

5. For electrical work, follow the local national wiring standard, regulation and this installation instruction. An independent circuit and single outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.

6. Use the specified cable (2.5 mm2) and connect tightly for indoor/outdoor connection. Connect tightly and clamp the cable so that no external force will be acted on the terminal. If connection or fixing is not perfect, it will cause heat-up or fire at the connection.

7. Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will cause heat-up at connection point of terminal, fire or electrical shock.

8. When carrying out piping connection, take care not to let air substances other than the specified refrigerant go into refrigeration cycle. Otherwise, it will cause lower capacity, abnormal high pressure in the refrigeration cycle, explosion and injury.

9. When connecting the piping, do not allow air or any substances other than the specified refrigerant (R410A) to enter the refrigeration cycle. Otherwise, this may lower the capacity, cause abnormally high pressure in the refrigeration cycle, and possibly result in explosion and injury.

10.

•

When connecting the piping, do not use any existing (R22) pipes and flare nuts. Using such same may cause abnormally high pressure in the refrigeration cycle (piping), and possibly result in explosion and injury. Use only R410A materials.

•

Thickness of copper pipes used with R410A must be more than 0.8 mm. Never use copper pipes thinner than 0.8 mm.

•

It is desirable that the amount of residual oil is less than 40 mg/10 m.

11. Do not modify the length of the power supply cord or use of the extension cord, and do not share the single outlet with other electrical appliances. Otherwise, it will cause fire or electrical shock.

1. The equipment must be earthed. It may cause electrical shock if grounding is not perfect.

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

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

1. Selection of the installation location. Select a installation location which is rigid and strong enough to support or hold the unit, and select a location for easy maintenance.

2. Power supply connection to the room air conditioner. Connect the power supply cord of the room air conditioner to the mains using one of the following method. Power supply point shall be the place where there is ease for access for the power disconnection in case of emergency. In some countries, permanent connection of this room air conditioner to the power supply is prohibited.

1. Power supply connection to the receptacle using a power plug.

Use an approved 16A power plug with earth pin for 2.0HP (E18CK, E21CK) for the connection to the socket.

2. Power supply connection to a circuit breaker for the permanent connection. Use an approved 16A circuit breaker for 2.0HP (E18CK,

E21CK) for the permanent connection. It must be a double pole switch with a minimum 3 mm contact gap.

3. Do not release refrigerant. Do not release refrigerant during piping work for installation, reinstallation and during repairing a refrigeration parts. Take care of the liquid refrigerant, it may cause frostbite.

4. Installation work. It may need two people to carry out the installation work.

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

Attached accessories

Applicable piping kit

CZ-4F5, 7, 10AN (E18CK, E21CK)

Indoor/Outdoor Unit Installation Diagram

SELECT THE BEST LOCATION

INDOOR UNIT

• 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.

• Recommended installation height for indoor unit shall be at least 2.3 m.

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 10m, addition al refrigerant should be added as shown in the table.

• This illustration is for explanation purposes only. The indoor unit will actually face a different way.

11.2. INDOOR UNIT

11.2.1. SELECT THE BEST LOCATION (Refer to “Select the best location” section)

11.2.2. HOW TO FIX INSTALLATION PLATE

The mounting wall is strong and solid enough to prevent it from the vibration.

11.2.3. 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 15 mm from the wall.

Caution

When the wall is hollow, please be sure to use the sleeve for tube ass’y to prevent dangers caused by mice biting the connecting cable.

4. Finish by sealing the sleeve with putty or caulking

compound at the final stage.

The centre of installation plate should be at more than 550 mm at right and left of the wall.

The distance from installation plate edge to ceiling should more than 67 mm.

From installation plate left edge to unit’s left side is 47 mm.

From installation plate right edge to unit’s right is 73 mm.

For left side piping, piping connection for liquid should be about 126 mm from this line. For left side piping, piping connection for gas should be

about 174 mm from this line. For left side piping, piping connecting cable should be

about 984 mm from this line.

1. Mount the installation plate on the wall with 5 screws or more. (If mounting the unit on the concrete wall consider using anchor bolts.)

• 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 ø70 mm hole-core drill.

• Line according to the arrows marked on the lower left

and right side of the installation plate. The meeting point of the extended line is the centre of the hole. Another method is by putting measuring tape at position as shown in the diagram above. The hole centre is obtained by measuring the distance namely 150 mm and 125 mm for left and right hole respectively.

• Drill the piping hole at either the right or the left and the

hole should be slightly slanted to the outdoor side.

11.2.4. INDOOR UNIT INSTALLATION

For the right rear piping

For the right and right bottom piping

For the embedded piping

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

11.2.5. CONNECT THE CABLE TO THE INDOOR UNIT

1. The inside and outside connecting cable can be connected without removing the front grille.

2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 × 2.5 mm (E18CK, E21CK ) flexible cord, type designation 245 IEC 57 or heavier cord.

• Ensure the color of wires of outdoor unit and the

terminal Nos. are the same to the indoor’s respectively.

• Earth lead wire shall be longer than the other lead wires

as shown in the figure for the electrical safety in case of the slipping out of the cord from the anchorage.

• Secure the cable onto the control board with the holder

(clamper).

INSTALLATION OF AIR PURIFYING FILTERS

a. Open the front panel.

b. Remove the air filters.

c. Put air purifying filters (left) and triple deodorizing filter

(right) into place as shown in illustration below.

HOW TO TAKE OUT FRONT GRILLE

Please follow the steps below to take out front grille if necessary such as when servicing.

a. Open the intake grille and remove the screw at the front

of the front grille.

b. Set the vertical airflow direction louver to the horizontal

position.

c. Slide down the 3 caps on the front grille as shown in the

illustration below, and then remove the 3 mounting screws.

d. Pull the lower section of the front grille towards you to

remove the front grille.

When reinstalling the front grille, first set the vertical airflow direction louver to the horizontal position and then carry out above steps 2 - 3 in the reverse order.

AUTO SWITCH OPERATION

The below operations will be performed by pressing the “AUTO” switch.

1. AUTO OPERATION MODE

The Auto operation will be activated immediately once the Auto Switch is pressed.

2. TEST RUN OPERATION (FOR PUMP DOWN/SERV ICING PURPOSE)

The Test Run operation will be activated if the Auto Switch is pressed continuously for more than 5 sec. to below 8 sec. A “beep” sound will occur at the fifth sec., in order to identify the starting of Test Run operation

3. HEATING TRIAL OPERA TION

Press the AUTO Switch continuously for more than 8 sec. to below 11 sec. and release when a “beep beep” sound is occurred at eighth sec. (However, a “beep” sound is occurred at fifth sec.)

4. REMOTE CONTROL RECEIVING SOUND ON/OFF

The ON/OFF of Remote Control receiving sound can be changed over by following steps:

a. Press “AUTO” switch continuously for more than 16 sec. to below 21 sec. A “beep”“beep”“beep”“beep” sound will occur

at sixteenth sec.

b. Press the “Check” button once at Remote Control. A “beep” sound will occur.

c. Press the “AUTO” switch once to select Remote Control receiving sound ON/OFF. A “beep” sound indicates receiving sound

ON, and a “beep” sound indicate s receiving sound OFF.

11.3. OUTDOOR UNIT

11.3.1. SELECT THE BEST LOCATION (Refer to “Select the best location” section)

11.3.2. 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 by bolt nut. (ø10 mm).

2. When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails.

11.3.3. CONNECTING THE PIPING

Connecting The Piping To Indoor Unit

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.

Connecting The Piping to Outdoor Unit

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 valves and then tighten with torque wrench to the specified torque as stated in the table.

MODEL Piping size (Torque)

Gas Liquid

E18CK, E21CK 1/2” (55 N.m) 1/4” (18 N.m)

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 is 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.

11.3.4. EVACUATION OF THE EQUIPMENT (FOR EUROPE & OCEANIA DESTINATION)

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.

• Be sure to connect the end of the charging hose with the push pin to the service port.

2. Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum pump and vacuum pump adaptor.

3. Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmHg (0 MPa) to

-76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes.

4. Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not move after approximately five minutes.

Note: BE SURE TO FOLLOW THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.

5. Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.

6. Tighten the service port caps of the 3-way valve at torque of 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 (4 mm).

8. Mount valve caps onto the 2-way valve and the 3-way valve.

• Be sure to check for gas leakage.

CAUTION

If gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in step 3 above take the following measure:

•

If the leak stops when the piping connections are tightened further, continue working from step 3.

•

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

•

Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant, it may cause

•

frostbite.

11.3.5. CONNECT THE CABLE TO THE OUTDOOR UNIT

1. Remove the control board cover from the unit by loosening the screw.

2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 × 2.5 mm

(E18CK,

E21CK) flexible cord, type designation 245 IEC 57 or heavier cord.

3. Secure the cable onto the control board with the holder (clamper).

4. Attach the control board cover back to the original position with the screw.

11.3.6. PIPE 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 6 mm or above.

DISPOSAL OF OUTDOOR UNIT DRAIN WATER

• If a drain elbow is used, the unit should be placed on a stand which is taller than 3 cm.

• If the unit is used in an area where temperature falls below 0°C for 2 or 3 days in succession, it is recommended not to use a drain elbow, for the drain water freezes and the fan will not rotate.

CHECK THE DRAINAGE

• Open front panel and remove air filters. (Drainage checking can be carried out without removing the front grille.)

• Pour a glass of water into the drain tray-styrofoam.

• Ensure that water flows out from drain hose of the indoor

unit.

EVALUATION OF THE PERFORMANCE

• Operate the unit at cooling operation mode for fifteen minutes or more.

• Measure the temperature of the intake and discharge air.

• Ensure the difference between the intake temperature and

the discharge is more than 8°C.

CHECK ITEMS

Is there any gas leakage at flare nut connections?

Has the heat insulation been carried out at flare nut connection?

Is the connecting cable being fixed to terminal board firmly?

Is the connecting cable being clamped firmly?

Is the drainage OK? (Refer to “Check the drainage” section)

Is the earth wire connection properly done?

Is the indoor unit properly hooked to the installation plate?

Is the power supply voltage complied with rated value?

Is there any abnormal sound?

Is the cooling operation normal?

Is the thermostat operation normal?

Is the remote control’s LCD operation normal?

Is the air purifying filter installed?

12 Servicing Information

Caution:

• Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F(30-40°C) higher. Please use a high temperature soldering 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).

12.1. Troubleshooting

Rated Frequency Operation

During troubleshooting and servicing, rated compressor operating frequency must be obtained in order to check the specification and technical data. Below are the methods used to obtain rated compressor operating specification.

(a) Cooling

(i) Press the Auto button continuously for 5 seconds or less than 8 seconds, the air conditioner starts operation at Cooling rated frequency.

(“beep” will be heard at the 5th second.)

(ii) Short the service terminal (CN-S) of the outdoor printed circuit board. The operation of air conditioner is Cooling rated frequency.

(b) Heating

Press the Auto button continuously for 8 seconds or less than 11 seconds, the air conditioner starts operation at Heating rated frequency. (“beep”“beep” will be heard at the 8th second.)

Troubleshooting Air Conditioner

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 to the right.

1. Relationship between the condition of the air conditioner and pressure and electric current

Cooling Mode Heating Mode

Condition of the air

conditoner Low Pressure High Pressure Electric current

during operation

Insufficient refrigerant (gas leakage)

Clogged capillary tube or Strainer

Short circuit in the indoor unit

Heat radiation deficiency of the outdoor unit

Inefficient compression

Low Pressure High Pressure Electric current

during operation

•

Carry on the measurements of pressure, electric current, and temperature fifteen minutes after an operation is started.

12.2. Breakdown Self Diagnosis Function

Once abnormality detected during operation, the unit will immediately stop its operation (Timer LED is blinking) and maximum of three error codes (abnormality) will be saved in memory. The abnormality of the operation can be identifie d through the below breakdown diagnosis method:

•

Press “CHECK” button at remote control continuously for more than five seconds to turn on the diagnosis mode, “H11” will be displayed at remote control.

•

By pressing the TMER “ displayed.

•

If error code displayed matches the error code saved in unit memory (abnormality detected), four “beep” sounds will be heard and Power LED will light on. Otherwise, one “beep” sound is heard.

If “CHECK” button is press again during Cooling operation using test run operation mode for 30 seconds, the diagnosis mode will turn off.

” button once, next error code will be displayed; press “V” button once, previous error code will be

Error Codes Table

Diagnosis

display

H11 Indoor / outdoor abnormal

H14 Indoor intake air temperature sensor

H15 Outdoor compressor temperature sensor

H16 Outdoor Current Transformer open

H19 Indoor fan motor merchanism lock — —

H23 Indoor heat exchanger temperature

H26 Ion abnormality — —

H27 Outdoor air temperature sensor

H28 Outdoor heat exchanger temperature

H30 Discharge temperature sensor

H33 Indoor/Outdoor wrong connection — — H97 Outdoor Fan Motor lock abnormality — —

H98 Indoor high pressure protection — —

H99 Indoor heat exchanger anti-freezing

F11 Cooling / Heating cycle changeover

F90 PFC control 4 times occurance

F91 Refrigeration cycle abnormality 7 times occurance

F93 Outdoor compressor abnormal revolution 4 times occurance

F95 Cool high pressure protection 4 times occurance

F96 IPM (power transistor) overheating

F97 Outdoor compressor overheating

F98 Total running current protection 3 times occurance

F99 Outdoor Direct Current (DC) peak

Abnormality / Protection control Abnormality

communication

abnormality

circuit

sensor abnormality

abnormality

sensor abnormality

abnormality

protection

abnormality

protection

detection

Judgement

> 1 min after starting operation

Continue for 5 sec. —

— —

Continue for 5 sec. O

Continue for 5 sec. —

— —

4 times occurance within 30 minutes

within 10 minutes

continuously

within 20 minutes

— —

4 times occurance within 20 minutes

within 20 minutes

7 times occurance continuously

Indoor fan operation

Emergency

operation

only

(Cooling only)

—

Primary location to verify

• Internal / external cable connections

• Indoor / Outdoor PCB

• Intake air temperature sensor

(defective or disconnected)

• Compressor temperature sensor (defective or disconnected)

• Outdoor PCB

• IPM (Power transistor) module

• Indoor PCB

• Fan motor

• Heat exchanger temperature sensor

(defective or disconnected)

• Indoor PCB

• Ionizer

• Outdoor temperature sensor

(defective or disconnected)

• Outdoor heat exchanger temperature sensor (defective or disconnected)

• Discharge temperature sensor

• Indoor/Outdoor supply voltage

• Outdoor PCB

• Outdoor Fan Motor

• Air filter dirty

• Air circulation short circuit

• Insufficient refrigerant

• Air filter dirty

• 4-way valve

• V-coil

• Voltage at PFC

• No refrigerant

(3-way valve is closed)

• Outdoor compressor

• Outdoor refrigerant circuit

• Excess refrigerant

• Improper heat radiation

• IPM (Power transistor)

• Insufficient refrigerant

• Compressor

• Excess refrigerant

• Improper heat radiation

• Outdoor PCB

• IPM (Power transistor)

• Compressor

Note:

“O” - Frequency measured and fan speed fixed.

The memory data of error code is erased when the power supply is cut off, or press the Auto Switch until “beep” sound heard following by pressing the “RESET” button at Remote Control.

Although operation forced to stop when abnormality detected, emergency operation is possible for certain errors (refer to Error Codes Table) by using Remote Control or Auto Switch at indoor unit. However, the Remote Control signal receiving sound is changed from one “beep” to four “beep” sounds.

12.3. Remote Control

Remote Control Reset

•

When the batteries are inserted for the first time, or the batteries are replaced, all the indications will blink and the remote control might not work.

If this happen , remove the cover of the remote control and push the reset point once to clear the memory data.

Changing the wireless remote control transmission

•

code

When there are more than one indoor units installed in the same room, it is possible to set different remote control receiving signal by modifying the jumpers inside Remote Control.

12.4. Indoor Electronic Controllers Removal Procedures

1. The Electronic Controller, a Signal Receiver and an Indicator (Fig. 3) can be seen by the below steps:

• Open the Intake Grille and remove the screw at the front

of the Front Grille. (Fig. 1).

• Remove the 3 caps and 3 screws at the bottom of the

Front Grille. (Fig. 1)

• Remove the Front Grille by releasing the 3 hooks at the

top of the Front Grille. (Fig. 1)

• Unhook the tabs at the Control Board to remove the

Control Board Cover. (Fig. 2)

Fig. 1

2. To remove the Main Electronic Controller:

• Release the 2 Particular Piece. (Fig. 3)

• Release the CN-REC/DISP connectors. (Fig. 4)

• Release the CN-TH connector. (Fig. 4)

• Release the CN-MAIN connector. (Fig. 4)

• Release the CN-STM1 connector. (Fig. 4)

• Release the CN-STM2 connector. (Fig. 4)

• Release the hooks that hold the Electronic Controller.

(Fig. 3)

3. To remove the Power Electronic Controller:

• Release the CN-001 connector. (Fig. 4)

• Release the CN-002 connector. (Fig. 4)

Fig. 2

Fig. 3

Fig. 4

12.5. Cross Flow Fan and Indoor Fan Motor Removal Procedures

1. In order to remove the Cross Flow Fan and Indoor Fan Motor, Control Board need to be taken out by releasing all the connectors as indicated below.

a. Release the Earth Wire screw. (Fig. 5)

b. Release the Intake Air Sensor. (Fig. 5)

c. Release the Piping Sensor. (Fig. 5)

d. Release the CN-REC connectors. (Fig. 5)

e. Release the CN-STM1. (Fig. 5)

f. Release the CN-STM2. (Fig. 5)

g. Release connectors generator Ionizer. (Fig. 5)

Fig. 5

2. Pull out the Drain Hose from outlet to remove the Discharge Grille. (Fig. 6)

3. Removing the right and left screws. (Fig. 7)

4. By pressing down the hook at the left and pushing up the hook at the right, you will be able to remove the Control Board. (Fig. 7)

5. Remove the screw at the Cross Flow Fan. (Fig. 8)

Fig. 6

Fig. 7

Fig. 8

6. Remove the Bearing. (Fig. 9)

7. Remove the screws at the left of the Evaporator. (Fig. 9)

8. Push up the Evaporator and pull out the Cross Flow Fan from shaft. By then, Fan Motor can be taken out. (Fig. 10).

REMINDER - To reinstall the Fan Motor, put it back in place, adjust the position of the Fan Motor’s leadwire appropriately as shown in the Fig. 8 before installing the Cross Flow Fan.

Fig. 9

Fig. 10

12.6. Outdoor Electronic Controller Removal Procedure

1. Remove the top panel and front panel

Be save to return the wiring to its original position

•

There are many high voltage components within the heat

•

sink cover so never touch the interior during operation. Wait at least two minutes after power has been turned off.

Fig. 16

2. Remove the Outdoor Electronic Controller

Fig. 18

Caution! When handling electronic controller, be careful of electrostatic discharge.

Fig. 19

13 Technical Data

Outdoor Temp. (°C)

Indoor wet bulb temp.

17.0°C 5.26 3.99 1.51 4.91 3.82 1.63 4.57 3.67 1.74 4.16 3.49 1.88

19.0°C 5.30 1.65

19.5°C 5.77 4.17 1.54 5.40 4.01 1.66 5.02 3.86 1.77 4.56 3.67 1.91

22.0°C 6.29 4.33 1.57 5.88 4.16 1.69 5.47 4.01 1.80 4.97 3.83 1.95

Indoor wet bulb temp.

17.0°C 6.25 4.74 2.02 5.84 4.54 2.18 5.43 4.37 2.33 4.94 4.15 2.51

19.0°C 6.30 2.21

19.5°C 6.86 4.96 2.06 6.41 4.77 2.22 5.97 4.59 2.37 5.42 4.37 2.56

22.0°C 7.48 5.14 2.10 6.99 4.95 2.26 6.50 4.77 2.42 5.91 4.55 2.61

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

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

30 35 40 46

Outdoor Temp. (°C)

30 35 40 46

14 Exploded View

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.

15 Replacement Parts List

<Model: CS-E18CKE & CS-E21CKE>

REF. NO. PART NAME & DESCRIPTION QTY. CS-E18CKE CS-E21CKE REMARKS

1 CHASSY COMPLETE 1 CWD50C1293

2 FAN MOTOR 1 CWA981056

3 CROSS FLOW FAN COMPLETE 1 CWH02C1010

4 SCREW - CROSS FLOW FAN 1 CWH4580304

5 BEARING ASS’Y 1 CWH64K007

6 EVAPORATOR 1 CWB30C1387 CWB30C1336

7 FLARE NUT 1 CWT25086 (7/16”)

8 FLARE NUT 1 CWT25096 (3/4”)

9 INTAKE AIR SENSOR HOLDER 1 CWH32142

10 DISCHARGE GRILLE COMPLETE 1 CWE20C2240

11 VERTICAL VANE 15 CWE241088

12 CONNECTING BAR 2 CWE261025

13 AIR SWING MOTOR 1 CWA98260

14 LEAD WIRE - AIR SWING MOTOR 1 CWA67C3849

15 AIR SWING MOTOR 1 CWA981041

16 LEAD WIRE - AIR SWING MOTOR 1 CWA67C3731

17 HORIZONTAL VANE 1 CWE241136

18 CAP - DRAIN TRAY 1 CWH52C1001

19 PARTICULAR PIECE 1 CWD932162

20 CONTROL BOARD 1 CWH102103

21 TERMINAL BOARD COMPLETE 1 CWA28C2128

22 POWER SUPPLY CORD 1 CWA20C2328

23 ELECTRONIC CONTROLLER - MAIN 1 CWA73C1456 CWA73C1457 0

24 ELECTRONIC CONTROLLER - POWER 1 CWA743304

25 P.C.B. RECEIVER 1 CWA742724

26 ELECTRONIC CONTROLLER - INDICATOR 1 CWE39C1102

28 INDICATOR HOLDER 1 CWD932163

29 SENSOR COMPLETE 1 CWA50C2122

30 CONTROL BOARD TOP COVER 1 CWH131091

31 CONTROL BOARD FRONT COVER 1 CWH131090

32 REMOTE CONTROL COMPLETE 1 CWA75C2401

33 FRONT GRILLE COMPLETE 1 CWE11C2843

34 INTAKE GRILLE 1 CWE22C1105

35 GRILLE DOOR 1 CWE141033

36 CONTROL PANEL 1 CWE312291

37 DECORATION BASE (R) 1 CWE351067

38 DECORATION BASE (L) 1 CWE351068

39 AIR FILTER 2 CWD001049

40 SCREW - FRONT GRILLE 4 XTT4+16C

41 CAP - FRONT GRILLE 3 CWH521062

42 DRAIN HOSE 1 CWH85285

43 AIR PURIFYING FILTER 1 CWMD00C0001

44 TRIPLE DEODORIZING FILTER 1 CWMD00C0004

45 BAG COMPLETE - INSTALLATION SCREW 1 CWH82C067

46 INSTALLATION PLATE 1 CWH36K1007

47 FULCRUM 2 CWH621013

48 ELECTRONIC CONTROLLER - IONIZER 1 CWA743099

49 CASING - IONIZER 1 CWD932228

50 ION - GENERATOR 1 CWH94C0001

←

(Note)

All parts are supplied from MAICO, Malaysia (Vendor Code: 061).

•

“O” marked parts are recommended to be kept in stock.

•

16 Exploded View

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.

17 Replacement Parts List

<Model: CU-E18CKR & CU-E21CKR>

REF NO. DESCRIPTION & NAME QTY. CU-E18CKR CU-E21CKR REMARKS

1 CHASSY ASSY 1 CWD50K2085

2 ANTI-VIBRATION BUSHING 3 CWH50077

3 COMPRESSOR 1 5CS130XAC03

4 NUT-COMPRESSOR MOUNT 3 CWH56000

5 SOUND PROOF MATERIAL 1 CWG302111

6 FAN MOTOR BRACKET 1 CWD541054

7 FAN MOTOR 1 CWA981110

8 SCREW - FAN MOTOR BRACKET 2 CWH551060

9 SCREW - FAN MOTOR MOUNT 3 CWH551109

10 PROPELLER FAN ASSY 1 CWH03K1016

11 NUT - PROPELLER FAN 1 CWH56053

12 CONDENSER 1 CWB32C1317R CWB32C1324R

14 TUBE ASS’Y COMPLETE (VALVE/RECEIVER) 1 CWT01C2900 CWT01C2901 O

15 4 WAYS VALVE 1 CWB001027

16 STRAINER 1 CWB11094

18 HOLDER - COUPLING 1 CWH351035

19 3 WAYS VALVE (GAS) 1 CWB011170

20 2 WAYS VALVE (LIQUID) 1 CWB021135

21 DRYER 1 CWB101015

22 SOUND PROOF BOARD 1 CWH151050

23 TERMINAL COVER 1 CWH171001

24 NUT-TERMINAL COVER 1 CWH7080300

25 SENSOR COMPLETE (COMP. TOP) 1 CWA50C2168

26 HOLDER SENSOR 3 CWH321010

27 V-COIL COMPLETE (4-WAYS VALVE) 1 CWA43C2098

28 V-COIL COMPLETE (EXPAND VALVE) 1 CWA43C2058

29 SENSOR COMPLETE (COMP. DISC.) 1 CWA50C2169

30 SENSOR COMPLETE 1 CWA50C2120

31 REACTOR 1 CWA421069

32 CONTROL BOARD (SIDE) 1 CWH102122

33 TERMINAL BOARD ASSY 1 CWA28K1036

34 FUSE HOLDERS 1 - -

35 FUSE 1 - -

36 CONTROL BOARD (TOP) 1 CWH102204

37 CONTROL BOARD (BOTTOM) 1 CWH102205

38 ELECTRONIC CONTROLLER - MAIN 1 CWA73C1464 CWA73C1465

40 CONTROL BOARD COVER (TOP) 1 CWH131167

41 CABINET SIDE PLATE (LEFT) 1 CWE041082A

42 HANDLE 1 CWE161010

43 CABINET SIDE PLATE (RIGHT) 1 CWE041083A

44 HANDLE 1 - -

45 CABINET FRONT PLATE CO. 1 CWE06K1043

46 WIRE NET 1 CWD041041A

47 CABINET TOP PLATE 1 CWE031031A

48 CONTROL BOARD COVER (BOTTOM) 1 CWH131168

49 CONTROL BOARD COVER (TOP) 1 CWH131169A

50 OPERATING INSTRUCTION 1 CWF563989

51 OPERATING INSTRUCTION 1 CWF563990

52 OPERATING INSTRUCTION 1 CWF563991

53 INSTALLATION INSTRUCTION 1 CWF612433

54 INSTALLATION INSTRUCTION 1 CWF612434

55 INSTALLATION INSTRUCTION 1 CWF612435

56 DRAIN HOSE 1 CWH5850080

57 PACKING 1 CWB81012

←

(Note)

All parts are supplied from MAICO, Malaysia (Vendor Code: 061).

•

“O” marked parts are recommended to be kept in stock.

•

18 Electronic Circuit Diagram

• CS-E18CKE CS-E21CKE

SCHEMATIC DIAGRAM 1/3

TO OUTDOOR

DISPLAY

ION1 (GRN)

ION2 (GRN)

POWER MONITOR

HIGH (GRN)

2(GRN)

LOW (GRN)

AUTO SW

POWERFUL (ORG)

TIMER (ORG)

QUIET (ORG)

POWER (ORG)

D401

D402

D403

D404

D405

SW401

D408

D406

D407

D409

TEMPERATURE

FUSE

CN-DISP1

(PH10)

ELECTRONIC CONTROL UNIT

WHT AC5

WHT AC3

FG1

FG2

AC4

AC6

AC2

AC1 (BLK)

CN-HA

1 2 3 4 5 6 7 8 9

(YLW/GRN)

(BLK)

(RED)

(BRW)

4 3 2 1

1 2 3 4 5 6 7 8 9

CN-DISP

C30

C29

RY-PWR

R19

10kΩ

C31

R42 110Ω R45 270Ω R46 270Ω

R47 270Ω R18 1kΩ R48 330Ω R49 330Ω R50 330Ω R51 270Ω

0.01µ

C10

0.01µ

R20 10kΩ

R21 1kΩ

654321

1098

CN-MAIN

PH10

(WHT)

100µ

16V

C6 47µ

25V

330Ω

1000p

(MB)

R2 43Ω

R17 1kΩ

BZ1

2KHz

RY-PWR

R1 43Ω 1/2W

1/2W

16 15 14 13 10

IC2

TD62003AF

1 2 3 4 7

C20

0.01µ

R36

10kΩ

R35

10kΩ

R34

10kΩ

C17

R33

10kΩ

BUSY

RST

IC3

BR9080F

1µ

C15

C16

SCHEMATIC DIAGRAM 2/3

R14 510Ω

100Ω

(2125)

R4 20kΩ

0.1µ [KB]

R5 20kΩ

611

IC2 IC2

100Ω

(2125)

R7 20kΩ

R8 5.1kΩ

0.022µ

R12 1kΩ

C4 1000p (MB)

R13 20kΩ

C14 0.01µ(MB)

CN-RCV

R15 1kΩ

3 2 1

RECEIVER

CN-RCV

(MX-3)

10V (NHG)

1 2 3

C101 22µF

R101

IC101

1kΩ

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

R30

6.2kΩ

P47

P50

P51

P52

P53

P54

P55

P56

P57

Vss0

Vdd0

P30

P31

P32

P33

TXD2

RXD2

R38

6.2kΩ

P36

P46

QUIET LED

OPERATION LED

TIMER LED

TRANSMISSION

S1L

P45

ION LED

DATA

S01

P44

SCK1

P43

RXD0

P41

P42

A52D076G591

INTAKE AIR TEMP

PIPE TEMP

TEST

AUTO OPERATION

GROUND

P25

TXD0

C12

0.01µ

P40

Vdd1

IC1

C13

0.01µ

P67

BUZZER

Avss

P65

P66

POWER RELAY

P16

P17

26252423222120191817

R54 10kΩ

R26 10kΩ

P74

P64

BUZ

FAN MOTOR ON/OFF 15V

DATA RECEPTION

RxD

50/60Hz

DETECTION

FAN MOTOR

REVOLUTION

DETECTION

REMOTE CONTROL

8 MHz

OSC

RESET

POWER

ANI3

P14

P15

292827

R41 10kΩ

R31 10kΩ

20kΩ

P73

ANI2

P72

TOD0

INTP3

INTP2

INTP1

INTP0

Vss1

IC(VPP)

XT1

XT2

Reset

AVref

ANI0

ANI1

P71

P80

C21

16 15 14 13 12 11 10

CN-ION

CN-TH

CN-STM1 (PH5)

5 4 3 2 1

CN-STM2 (PH5)

5 4 3 2 1

4 3 2 1

1 2 3 4

5 4 3 2 1

(ZH5) VERTICAL

5 4 3 2 1

(ZH5) HORIZONTAL

AIR TEMP. SENSOR (15k 3950)

PIPE TEMP. SENSOR (20k 3950)

IC5

TD62003AF

1 2 3 4 5 6 7

IC4

22k

TEST

IC6

TD62003AF

C18

1µ

R16 5.1kΩ

R37

150k

1µ

R27 1kΩ

R22

15kΩ

C7 10µ 50V

+C8 10µ 50V

R28 1kΩ

Ω

C11

1µ

+R23

8 MHz (15pF X 2) CSTS0800MG03

IC-PST600DMT

R32

100kΩ

C19

2.2µ 50V

R29

10kΩ

R55

10kΩ

SCHEMATIC DIAGRAM 3/3

ELECTRONIC CONTROL UNIT (CONVERTER UNIT)

F001

11 10

9 8 7 6 5 4 3

2 1

1 2 3 4 5 6 7

1 2 3 4 5

CN001

CN002

CN103

CN101

Z001

D007 R030 R046

R114

R116

R118

R117

R023

R024

R032

C002

Z002

R115

R053

C014

R052

R051

R050

R048

C016

PC001

PC002

Q102

C003

L001

C004

R056

L002

R002

R001

C015

R033

R054

R034

IC001

C017

ZD005

C005

R007 R006

R031

C007

R013

Q005

R055

R014

R012

C018C008

Q006

D006

D014

R005

D003

TH001 TH002

R003

R004

D002

R016

R017

ZD002

ZD003

C009

R57

ZD006 ZD007

DB004

PC004

R008

feedback

PC003

Q004

C010

C013

Q003

D013

R048

R028

Q002

C006

ZD001

R020

R026

R027

C012

R015

R060R059R058

R025

R019

R021

ZD004

D045

R018

C011

R047

R010R009

R011

PC005

R029

10k

T602

549

4.7k

Q001

D101

R113

PC006

R112

R105

L101

C103

ZD101

C106

IC101

C105

EH-4P

4 3 2 1

HIGH VOLTAGE

CH1

VIN

R16

GND

ERR

C2 C1

R101

R102

CN2

-4.2kV

CN3 GND

D101

T01

C3 R4

ZD1

R10

D102

C101

R12

R13

R14

R15

C10

ZD2

CU-E18CKE CU-E21CKE

HEMATIC DIAGRAM 1

TERMINAL

GRY2

1.65k 1%

C72 22 100V

R125

D13

C71 220 10V

D14 ERA15-01

ZD1

ZD5

REACTOR

GRY1

DC-1 LJP105 BLUE

LJP110

YELLOW

LJP103 YELLOW

LJP104 BLUE

R177 100k

R170 100k

R171 100k

RY-C K6B1AGA00082

R115

R120

39k 2W

R106

39k 2W

DB102

C101

R111 10k

R116 10

1/4W 1

PC19

TLP620

C102 65 350V

DB101

2SC2411KRTX

Q4 B1JAFR000001

R110 47

R117

R126 10K

R122

4.7k

C70

1500p

R123

4.7k

DC-2 LJP111 BROWN

C103

C104

850

400V

C105

LJP101 RED

R113

PC20

470

TLP421

(BL)

2SAC1036KRTX

PC22

TLP421

(BL)

R114

18k

Q11 2SC2412K

C106

R127 20k 1%

LJP107

RED

FG1

GRN

R198 1M 1/4W 1%

R151

R150

R149

R148

R147

R146

R145

R144

1.0 250V

ERA15-06

C12 2200pF 250V

R160

9.1k 1/4W

R164

9.1k

1/4W

LF101

1.0 250V

R161

R162

9.1k

1/4W

R165 R166 R167

R152

R3 1.21k R172 330k

2W 13k 1%

PC18

TLP421

(BL)

20k 1%

ZD6 ZD2

1.0 250V

R163

9.1k

1/4W

PTC2

PTC1

RY-PWR

4700pF 250V

C7 4700pF 250V

CT101 ETQ19Z59BZ

R124 698 1%

D5 ERA15-10

PC17 TLP421 (GR)

680

100k

JUMPER

ZNR107

ZNR108

1 2 33

AC-BLK

R141

ZNR102

ERZVEAV511

R140

R143

ZNR103

ERZVEAV511

R142

AC-WHT

DATA

RED

D18

ERA15-01

RY-C

ZD4

RD10EB2

R9 5.6k

2SC2412K

C130

50V

D34

C138

50V

R101

10k

Q14

2SC2411KRTX

R6 47k

C131 10 50V

C123

0.047 25V

C135

R189

0.047

1.4k

25V

R190 100

10k e

PC393G2

(ECQV)

4.7k

Q6 DTC143XK

R92

1.8k

49.9k

IC6

C124

0.01

IC7

R197

C136

0.82

R94

3 2

R192

C127

374k 1

D32

IC6

PC363G2

Q12 DTA143XK

10k

4.7k

C132 1000p

R100

17.8k

20k

D33

100

IC7

R193

25.5k

0.01

C122

0.01

R86

R95 100

C125

0.82 50V

R194

3.74k 1

C128

0.01

R90

29.4k

C133 1000p

5 6

R196

20k

10k

R96

6.98k

R98

2.74k

R93

45.3k

Q13

DTA143XK

4.7k

R195

12.1k

C134 1000p

C129

0.01

C121

0.01

R178 10k

10k

4.7k

10k

4.7k

DTA143XK

Q18 DTC143XK

Q17

R91

HEMATIC DIAGRAM 2

LJP112 BROWN

LJP109

LJP113

BLACK

R139

8.25k 1%

R2 499k 1/4W 1

R1 499k 1/4W 1

TANK TEMP. SENSOR

R28 499k 1/4W 1

R8 499k

1/4W 1

R134

7.68k

(50k 3950)

CN-TANK

FUSE

3.15A 250V

C11

R223 1k

C207

0.047 25V

C208

0.047 25V

R206

15k

C229 3900p

CN201

D210 RB500V-40

C230 3900p

R237

20k

R224

C219

0.047 25V

C209

C223

0.047 50V

25V

CN202 2

R201 1k

R207 1k

C210

0.01

C202

0.047 25V

CN201

R226 1k

C203

0.047 25V

R220 1k

R208 1k

C201 3900p

R221 1k

C205

0.047 25V

R203

R204 100k

D200 RB500V-40

R222 1k

C206

0.047 25V

R205 3k

Q201

2SC2412K

R263

5.6k

CN203

C15

100

6.3V

CN201

CN202

CN203

9 CN203

7 CN203

6 CN203

R227 1k

CN203

R16

4.99k

10V

17 CN201

10 CN202

CN201

8 CN203

R17 10k

11 CN202

HEMATIC DIAGRAM

3/5

CN2023CN202

R211 10k

R210 10k

C227

0.56

6.3V

100

P56

P57

VDD(3.3V)

AVSS(GND)

ADIN08

ADIN01

ADIN10

AVDD(3.3V)

ADIN11(COMP)

AVSS(GND)

AVDD(3.3V)

IRQ00(DC)

IRQ01(FAN)

AVSS(GND)

IRQ02(PFC)

P93(PFC)

P94(PFC)

P95(PFC)

AVDD(3.3V)

ADIN50

ADIN51

ADIN52

ADIN53 (Tank Sensor)

ADIN54

R230

R231 10k

X1 10MHz 15pF x 2

IC4

RY-2

RY-1

45 61312 7

R214 10k

(RY-1)P71

(FM)PWM10

(Z)NPWM02

CN20112CN2015CN20113CN2014CN201

(W)PWM02

COMPRESSOR DRIVE

R212

R213

10k

99 98 97 96 95 94 93 92 91 90 89 88 87 86 85

(TR)73

PWM20

(2.5V)VDD2

(GND)VSS

(RY-2)P72

(3.3V)VDD

RY-2 DRIVE

CN201

(3.3V)VDD

(Y)NPWM01

(V)PWM01

(X)NPWM00

PFC DRIVE

DC VOLTAGE

RY-2 DRIVE

IC201

DC PEAK

DETECTION

A52103S46MC

MICON

POWER

PFC ABNORMALITY

DETECTION

PIPE TEMP

OUTDOOR AIR TEMP

COMPRESSOR TEMP

RUNNING CURRENT

6 MHz

OSC

TEST2(GND)

TEST1(GND)

ADIN55

ADIN56

ADIN57

R225

R232 150k

PVDD(3.3V)

AVSS(GND)

302928

PVSS(GND)

TCPOUT(GND)

R233

OSC2

TEST3(GND)

3332

OSC1

R234

VSS(GND)

3938

C228 0.047

R235 1k

R215 10k

(GND)VSS

(U)PWM00

SERVICE SWITCH

VDD(3.3V)

LON(3.3V)

VSS(GND)

25V

C212 1000p (MB)

R216

R217

10k

84 838281

P50

(2.5V)VDD2

(COMP)P51

DATA RECEPTION

DATA TRANSMISSION

TEST

VOUT(2.5V)

VDD(3.3V)

444342

C224

0.56 F

6.3V

C211

0.01

80 79 78 77

P47

P46

RY-C DRIVE

RESET

(EEPROM SCK)SBT1

P10

PO5

2 x fHz

CN202

P43

P44

P45

(3.3V)VDD

(2.5V)VDD2

(GND)VSS

NRST

(GND)VSS

(RXD)SBI0

(TXD)SBD0

(3.3V)VDD

(EEPROM SO)SBI1

(EEPROM SI)SBO1

(GND)VSS

(EEPROM CS)P16

(2.5V)VDD2

(LED)P14

VDD(3.3V)

P11

P12

P13

494847

R245 51k

R218 10k

P42

P34

P33

P32

P31

P30

P26

P21

P20

P17

P15

R244 10k

10k

R246

CN203

CN201

16 25 29 26 27

C226

0.56

6.3V

R249

R254 100k

C217

0.1 16V

IC203

BD4729G

GNC

R252 20k

C220

0.01

R253 1k

D213

RB501V-40

C218

0.047 25V

CN201 3

CN201 16

CN202 5

CN202 9

CN202 6 CN202 7

R243 1K

R242 10k

R251 10k

R258 10k

ICX1

BR9080AF-WE2

R/B

2 7

Vcc

GND

C216 0.01

R255

R256

10k

R257

10k

CN202

JX1

IC204

S13033LU

Vin

C225 100 16V

C213

0.01

C214

100

C231

6.3V (FC)

CN201 20

CN201 19

CN203 4

R238 27k

R239 1k

R241 1k

R240 1k

ECU1

HEMATIC DIAGRAM 4

CN-FW1

(XH7-5)

654321 7

C75

0.047 25V

C74

0.047 25V

DTA143XK

1Ok

4.7k

R102 10k

Q10

C65

0.22 630V

R76

R199

160

PTC3

ZPC56CH251A1UC

RY-1

ALA2ZF12E01

R75 10k

R73

5.11k 1%

DTC143XK

1Ok

4.7k

C60

R72

1000p

(MB)

CN-HOT

(VH3-2)

5W 5%

C61 10 50V

R74

5.11k 1%

2SC2411KRTX

R187 332

D20

ERA15-06

Q16

R69 10k

4 WAYS

VALVE

D23

ERA15-06

R32 R33 R34 R35 R36

680 x 6

RY-PWR

ERA15-01

D19

C51

C52

ZD3 RD24EB2

C53

C54

150 x 6 R37R31 R38 R39 R40 R41 R42

TC74HCT700AF

1000p x 6

C55

C56

IC4

TD62003AF

RY-2

ALD112A01

3 2 1

10k x 6

R43

5 3

12 10

IC3

13 14

15 16

R44

R45

R46

R186 39.2k

C84 10 50V

R48

R47

C66

C57

100

0.047

6.3V

25V

(FC)

R99

4.7k

C82

0.047 25V

IC8

R15 470

IC5 TD62003AF

R8501V-40 x 4

EXPANSION

VALVE MOTOR

LED

D24 D25 D26 D27

654321

CN-STM

(XH6)

R70

HEMATIC DIAGRAM

5/5

T101 ETXMJ326X1C

d 1

C29

0.22 630V

(MF)

AUO1A x 3

D12

R185 8.06k

D10

C35 47 25V (FC)

C81 100 16V

C83 10 50V

D11

C33 47 25V (FC)

TL3472

C31 47 25V

(FC)

C34

0.047 25V

C36

0.047 25V

R184 8.06k

IC8

R179

3.24k

R182

1.65k

C32

0.047 25V

C37

C38

C39

C40

C41

C42

0.047 x 41000p x 3

C46

C45

C44

1000p x3

R180

27.4k 1%

R181 20k

R183 39.2k

C30

R30

25V

(FC)

ZD7

C80

C43

C47

0.047 25V

D7 ERA2204-04

C21 470 25V (FC)

D8 ERB83-006

C25

470 25V

D9 ERA22-04

3 4

HV1C1

Vcc

COM

7 8

HV1C2

Vcc

COM

HV1C3

Vcc

COM

LVIC

Vcc

IN(X)

IN(Y)

IN(Z)

VFO

GND

U OUT

V OUT

W OUT

CCT

roc

0.022

R21

C48

(MB)

C28 470 25V (FC)

25V

0.01

R23

C49

0.022 25V

(MB)

C22

R24 10 1W

R25

4.7k 1/4W

R67 82.5

C73

0.022 25V (MB)

NJM78M15F

IC1

0.01

R19 10 1W

R26

R83 R82

C24

C23

100 25V

R20

NJM78M05F

IC2

C26

0.01

C27 100 16V

C50

0.47 630V (MDS)

RED

BLUE

COMPRESSOR

R64 R63

R62 R61

R60 R59

R58 R57

R56 R55

R54 R53

R52 R51

R66 R65

R50 R49

R10

4.99k

50V

YELLOW

CN-DIS(XH3)

3 2 1

DISCHARGE TEMP SENSOR (50k 3950)

R13 470

R14 10k

R12

C10 10 50V

R11

15k

15.8k

C9 10 50V

CN-TH (XH4)

1 2 3 4

CN-TEST

1 2

CN-S (NH2)

2 1

OUTDOOR TEMP. SENSOR (15k 3950)

PIPE TEMP. SENSOR (4.96k 3800)

(NH2)

How to use electronic circuit diagram

TIMER TABLE <INDOOR>

4 way valve abnormality 4 min. 24 sec. Outdoor air temp. for Hz No. decision 30 min. 0 sec. Anti-dew formation control 20 min. 0 sec. Anti-freezing control 6 min. 0 sec. Thermo OFF delay 3 min. 0 sec. Low pressure control (gas leakage) compressor OFF time 3 min. 0 sec. Time delay safety control 2 min. 58 sec. 0 sec.

Odour timer status shift time 90 sec. 0 sec.

Intake air temp. sampling time 2 min. 0 sec. Self diagnosis display time 10 sec. 0 sec. Auto mode judgement sampling time 20 sec. 0 sec. 24 hours Real Timer 1 hour 1 min. Heating SSHi fan speed shift 120 min. 12 sec. Cooling SHi fan speed shift 30 min. 3 sec. Hot start forced completion 4 min. 0.4 sec. Auto mode judgement interval 30 min. 3 sec. After Hot start / Deice 2 min. 12 sec.

Test mode

Name Time (When test point

Short-circuited)

20 sec.

120 sec.

TIMER TABLE <OUTDOOR>

DC PEAK 30 sec. 3 sec.

Deice detection 80 min. 16 sec.

Hz lock time 30 sec. 0 sec. Outdoor fan delay operation control 30 sec. 3 sec. 4 way valve delay operation control 3 min. 18 sec.

Test mode

Name Time (When test point

Short-circuited)

120 min. 24 sec.

40 min. 8 sec. 40 min. 8 sec.

18.1. REMOTE CONTROL

18.2. PRINT PATTERN INDOOR UNIT PRINTED CIRCUIT BOARD

18.3. PRINT PATTERN OUTDOOR UNIT PRINTED CIRCUIT BOARD VIEW

100 [MAICO] Printed in Malaysia

Panasonic CS-E21CKE, CS-E18CKE, CU-E21CKE, CU-E18CKE User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual