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

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
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
12
13
14
15
15
32
44
52
52
53
57
3
6
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
© 2003 Matsushita Industrial Corp. Sdn. Bhd. (11969-T). All rights reserved. Unauthorized copying and distribution is a violation of law.
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63
66
69
72
72
74
76
77
78
80
81
84
15 Replacement Parts List 85
16 Exploded View
17 Replacement Parts List
18 Electronic Circuit Diagram
18.1. REMOTE CONTROL
86
87
88
98
1 Features
18.2. PRINT PATTERNIN DOOR UNIT PRINTED CIRCUIT
BOARD
18.3. PRINT PATTERNO UTDOOR UNIT PRINTED CIRCUIT
BOARD VIEW
99
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
2 Functions
Remote Control
OFF/ON
I
MODE
POWERFUL
QUIET
Operation OFF / ON
Operation Mode Selection
a
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
ON
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.
3
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) ......
(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
4
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
5
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
V
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
50
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
6
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
2
× 714 × 36.4
878
Specifications are subjected to change without notice for further improvement.
7
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
V
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
50
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
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
8
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
2
— —
× 714 × 36.4
878
Specifications are subjected to change without notice for further improvement.
9
4 Dimensions
10
11
5 Refrigeration Cycle Diagram
12
6 Block Diagram
13
7 Wiring Diagram
14
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 DryHeating -2.0 HeatingCooling/Soft Dry +2.0
Mode Shift: Temperature Shift (°C)
15
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 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
16
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.
17
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.
18
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
19
B. Indoor Fan Control
i. Indoor fan control operation outline
1. Cooling / Dry
2. Heating
20
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.
21
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)
22
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
SLo
←→
5
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.
23
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
7
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
24
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
25
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 quietbutton 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)
26
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 quietbutton 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.
Lo
Lo
27
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
(c) Heating 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.
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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.
29
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 OFFcondition (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.
30
3. Ionizer operation status is not memorised by micon. After OFF, when operation is ONagain, 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
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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.
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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.
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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.
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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.
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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.
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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
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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.
38
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.
39
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
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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.
41
3. Deice conditio n:
OD air temp. t
0°C.
OD heat exchan ger temp.
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.
42
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
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9 Operating Instructions
47
Ionizer
DO NOT TOUCH
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48
44
48
49
50
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Select
ON Timer Timer Timer
Current time OK? –> Setting: page 48
orSet time Confirm
OFF orSet time Confirm ON & OFF
Set time Confirm
46
Soaps Neutral household detergents
( pH7)
every 6 months
see page 44
see page 48
47
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!
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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
3
44.4 kg/m
3
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
52
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.
53
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
3
3
-0.1 - 5.3 Mpa -76 cmHg - 53 kgf/cm
-0.1 - 3.8 Mpa -76 cmHg - 38 kgf/cm
3
3
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
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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
55
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
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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
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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
A +0, -0.4 B
R410A flaring
tool, clutch type
dimension
dimension
A (mm)
Conventional flaring tool
Clutch type Wing-nut type
C
dimension
C
dimension
D
dimension
D
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.
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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
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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.
60
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
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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.
<Brazing Method for Preventing Oxidation>
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.
3
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)
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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 PRECAUTIONScarefully 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 kgfm) 55 N●m (5.5 kgfm) 65 N●m (6.5 kgfm)
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 sets 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.
63
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.
64
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.
65
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 assy 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 units left side is 47 mm.
From installation plate right edge to units 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
1.
For the right and right bottom piping
2.
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For the embedded piping
3.
(This can be used for left rear piping & left bottom piping also.)
67
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 indoors 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).
2
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.
68
AUTO SWITCH OPERATION
The below operations will be performed by pressing the AUTOswitch.
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 beepsound 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)
69
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.
70
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
2
(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?
71
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 controls 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
1.
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.
(beepwill 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.)
72
2.
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.
73
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 CHECKbutton 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
74
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
abnormality
circuit
sensor abnormality
abnormality
sensor abnormality
abnormality
protection
abnormality
protection
protection
detection
Judgement
> 1 min after starting operation
Continue for 5 sec.
Continue for 5 sec.
Continue for 5 sec. O
Continue for 5 sec. O
Continue for 5 sec. O
Continue for 5 sec.
4 times occurance within 30 minutes
within 10 minutes
continuously
within 20 minutes
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.
75
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.
76
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
77
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
78
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 Motors leadwire appropriately as shown in the Fig. 8 before installing the Cross Flow Fan.
Fig. 9
Fig. 10
79
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
80
13 Technical Data
81
82
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
TC SHC IP TC SHC IP TC SHC IP TC SHC IP
30 35 40 46
Outdoor Temp. (°C)
30 35 40 46
83
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.
84
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
0
0
0
0
0
0
0
0
0
0
0
(Note)
All parts are supplied from MAICO, Malaysia (Vendor Code: 061).
O marked parts are recommended to be kept in stock.
85
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.
86
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 ASSY 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
O
O
O
O
O
(Note)
All parts are supplied from MAICO, Malaysia (Vendor Code: 061).
O marked parts are recommended to be kept in stock.
87
18 Electronic Circuit Diagram
CS-E18CKE CS-E21CKE
SCHEMATIC DIAGRAM 1/3
TO OUTDOOR
1
1
2
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
2
33
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
10
(YLW/GRN)
(YLW/GRN)
(BLK)
(RED)
(BRW)
4 3 2 1
1 2 3 4 5 6 7 8 9
10
CN-DISP
C30
C29
P
L
RY-PWR
R19
10k
C31
R42 110 R45 270 R46 270
R47 270 R18 1k R48 330 R49 330 R50 330 R51 270
C9
0.01µ
C10
0.01µ
R20 10k
R21 1k
654321
1098
7
CN-MAIN
PH10
(WHT)
C5
100µ
16V
C6 47µ
+
25V
R9
+
330
C3
1000p
(MB)
9
R2 43
R17 1k
BZ
BZ1
2KHz
RY-PWR
R1 43 1/2W
1/2W
16 15 14 13 10
8
IC2
TD62003AF
1 2 3 4 7
C20
0.01µ
R36
10k
R35
10k
R34
10k
C17
R33
10k
2
4
SK
6
D0
5
D1
7
BUSY
RST
8
3
CS
1
IC3
BR9080F
1µ
C15
C16
88
SCHEMATIC DIAGRAM 2/3
R14 510
R3
100
(2125)
R4 20k
C1
0.1µ [KB]
R5 20k
611
IC2 IC2
12
5
R6
100
(2125)
R7 20k
R8 5.1k
C2
0.022µ
R12 1k
C4 1000p (MB)
R13 20k
C14 0.01µ(MB)
CN-RCV
R15 1k
3 2 1
RECEIVER
CN-RCV
(MX-3)
10V (NHG)
1 2 3
C101 22µF
R101
IC101
1k
+
1
2
3
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
R30
6.2k
P47
P50
P51
P52
P53
P54
P55
P56
P57
Vss0
Vdd0
P30
P31
P32
P33
TXD2
RXD2
R38
6.2k
P36
P46
QUIET LED
OPERATION LED
TIMER LED
TRANSMISSION
S1L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
P45
ION LED
DATA
S01
P44
SCK1
P43
RXD0
Q1
c
b
e
P41
P42
A52D076G591
INTAKE AIR TEMP
PIPE TEMP
TEST
AUTO OPERATION
GROUND
P25
TXD0
C12
D1
0.01µ
P40
Vdd1
IC1
C13
0.01µ
P67
BUZZER
Avss
P65
P66
POWER RELAY
P16
P17
26252423222120191817
R54 10k
R26 10k
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
30
31
292827
R41 10k
R31 10k
20k
P73
ANI2
1%
P72
TOD0
INTP3
INTP2
INTP1
INTP0
Vss1
X2
IC(VPP)
XT1
XT2
Reset
AVref
ANI0
ANI1
32
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
9
16
1
15
2
14
3
13
4
12
5
11
6
10
7
8
9
1 2 3 4 5 6 7
IC4
G
22k
22k
TEST
8
IC6
TD62003AF
C18
1µ
b
Q2
48
47
46
45
44
R16 5.1k
43
42
X1
41
R37
150k
40
39
38
37
36
35
34
33
1µ
R27 1k
R22
15k
1%
C7 10µ 50V
+C8 10µ 50V
R28 1k
C11
1µ
+
+R23
X1
8 MHz (15pF X 2) CSTS0800MG03
IC-PST600DMT
R32
100k
C19
+
2.2µ 50V
R29
10k
c
e
R55
10k
OI
89
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 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
1
2
4
3
R052
R051
R050
R048
C016
PC001
PC002
Q102
C003
L001
C004
R056
L002
4
R002
3
1
R001
2
c
b
e
C015
R033
b
R054
R034
IC001
C017
ZD005
+
+
C005
R007 R006
R031
C007
R013
e
Q005
c
b
R055
R014
R012
C018C008
c
Q006
e
D006
D014
R005
D003
TH001 TH002
R003
R004
D002
R016
R017
ZD002
ZD003
C009
R57
ZD006 ZD007
DB004
PC004
R008
1
feedback
PC003
14
32
D
G
Q004
S
C010
C013
c
b
Q003
D013
e
R048
R028
e
Q002
b
c
4
32
+
C006
ZD001
R020
R026
R027
C012
R015
R060R059R058
R025
R019
R021
ZD004
D045
R018
C011
R047
R010R009
R011
PC005
R029
41
e
10k
c
T602
549
1
2
3
4.7k
Q001
b
D101
10
8
7
6
R113
23
PC006
41
23
R112
R105
L101
C103
ZD101
+
C106
IC101
IO
5V
C105
+
EH-4P
4 3 2 1
HIGH VOLTAGE
F1
CH1
VIN
R16
GND
ERR
C2 C1
R101
R102
C7
CN2
HV
-4.2kV
CN3 GND
D101
T01
R2
R3
c
Q1
b
Q2
c
e
b
e
C3 R4
C8
D1
R5
D2
ZD1
R6
R10
D102
C101
R12
Q4
c
b
e
Q5
b
R13
D3
c
e
R14
R15
C5
R9
D6
C10
D5
ZD2
C9
C6
D1
90
CU-E18CKE CU-E21CKE
SC
/5
HEMATIC DIAGRAM 1
TERMINAL
1
2
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
D
S
R115
R120
39k 2W
R106
39k 2W
DB102
+
C101
3
R111 10k
R116 10
1/4W 1
1
2
PC19
TLP620
+
C102 65 350V
DB101
2SC2411KRTX
Q4 B1JAFR000001
G
R110 47
%
R117
R126 10K
1%
4
3
R122
4.7k
C70
1500p
R123
4.7k
DC-2 LJP111 BROWN
Q2
C103
C104
++
850
850
400V
400V
+
C105
LJP101 RED
R113
PC20
470
TLP421
c
(BL)
b
41
e
e
Q3
b
2SAC1036KRTX
c
PC22
TLP421
(BL)
1
R114
18k
c
b
Q11 2SC2412K
e
C106
4
32
R127 20k 1%
LJP107
+
RED
23
FG1
GRN
R198 1M 1/4W 1%
R151
R150
R149
R148
R147
R146
R145
R144
C2
C3
1.0 250V
C5
D6
ERA15-06
C12 2200pF 250V
R160
9.1k 1/4W
R164
9.1k
1/4W
LF101
C6
1.0 250V
R161
R162
9.1k
9.1k
1/4W
1/4W
R165 R166 R167
R152
R3 1.21k R172 330k
2W 13k 1%
PC18
TLP421
1
2
43
(BL)
20k 1%
ZD6 ZD2
3
2
R5
C4
1.0 250V
D1
D3
R163
9.1k
1/4W
PTC2
PTC1
C1
RY-PWR
4700pF 250V
C7 4700pF 250V
CT101 ETQ19Z59BZ
D2
D4
R124 698 1%
D5 ERA15-10
PC17 TLP421 (GR)
1%
R7
4
680
R4
1
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
10
50V
D34
C138
10
50V
c
b
e
R101
10k
Q14
2SC2411KRTX
c
c
b
Q5
e
R6 47k
Q5
+
+
C131 10 50V
+
C123
0.047 25V
C135
R189
0.047
1.4k
25V
R190 100
10k e
PC393G2
8
1
4
(ECQV)
4.7k
Q6 DTC143XK
R92
1.8k
49.9k
IC6
8
1
4
C124
0.01
IC7
R197
2
C136
0.82
b
R94
3 2
R192
C127
374k 1
D32
7
IC6
PC363G2
Q12 DTA143XK
e
10k
4.7k
b
C132 1000p
R100
17.8k
20k
D33
%
1
100
IC7
R193
25.5k
0.01
1
%
C122
0.01
R86
R95 100
C125
0.82 50V
R194
3.74k 1
C128
0.01
R90
29.4k
%
5
C133 1000p
6
%
5 6
R196
20k
e
10k
c
R96
6.98k
R98
2.74k
1
%
R93
45.3k
Q13
DTA143XK
4.7k
R195
12.1k
%
1
C134 1000p
C129
0.01
C121
0.01
b
R178 10k
e
10k
4.7k
b
c
c
10k
e
4.7k
DTA143XK
b
Q18 DTC143XK
Q17
R91
c
73
91
SC
HEMATIC DIAGRAM 2
/5
LJP112 BROWN
LJP109
LJP113
BLACK
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
%
1
(50k 3950)
%
%
CN-TANK
3
2
1
FUSE
3.15A 250V
C11
b
R223 1k
C207
0.047 25V
C208
0.047 25V
R206
15k
C229 3900p
15
15
CN201
D210 RB500V-40
C230 3900p
R237
20k
R224
C219
1k
0.047 25V
C209
C223
+
10
0.047 50V
25V
CN202 2
14
10
1
R201 1k
R207 1k
C210
0.01
C202
0.047 25V
10
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
c
2SC2412K
e
R263
5.6k
43
10
CN203
+
C15
100
6.3V
14
14
10
CN201
32
12
14
4
CN202
1
5
CN203
37
28
42
9 CN203
7 CN203
6 CN203
R227 1k
2
CN203
CN203
3
34
+
R16
1
4.99k
10V
17 CN201
17
10 CN202
30
CN201
11
11
7
8 CN203
41
R17 10k
25
11 CN202
31
92
SC
HEMATIC DIAGRAM
3/5
23
24
8
4
CN2023CN202
R211 10k
R210 10k
C227
0.56
6.3V
100
P56
1
P57
2
VDD(3.3V)
3
AVSS(GND)
4
5
ADIN08
ADIN01
6
ADIN10
7
8
AVDD(3.3V)
ADIN11(COMP)
9
10
NC
11
AVSS(GND)
AVDD(3.3V)
12
IRQ00(DC)
13
IRQ01(FAN)
14
AVSS(GND)
15
IRQ02(PFC)
16
P93(PFC)
17
18
P94(PFC)
P95(PFC)
19
AVDD(3.3V)
20
ADIN50
21
ADIN51
22
ADIN52
23
ADIN53 (Tank Sensor)
24
ADIN54
25
26
R230
1k
R231 10k
X1 10MHz 15pF x 2
IC4
11
6
RY-2
10
7
RY-1
12
5
45 61312 7
30
41
R214 10k
(RY-1)P71
(FM)PWM10
(Z)NPWM02
Z
40
CN20112CN2015CN20113CN2014CN201
(W)PWM02
W
COMPRESSOR DRIVE
7
R212
R213
10k
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
38
6
CN201
(3.3V)VDD
(Y)NPWM01
Y
36
37
(V)PWM01
(X)NPWM00
V
X
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
27
ADIN56
ADIN57
R225
R232 150k
PVDD(3.3V)
AVSS(GND)
302928
31
PVSS(GND)
TCPOUT(GND)
R233
1k
OSC2
TEST3(GND)
34
3332
OSC1
35
36
R234
VSS(GND)
37
1k
3938
C228 0.047
R235 1k
35
7
R215 10k
(GND)VSS
(U)PWM00
U
SERVICE SWITCH
VDD(3.3V)
LON(3.3V)
VSS(GND)
40
41
25V
C212 1000p (MB)
R216
R217
10k
10k
84 838281
P50
(2.5V)VDD2
(COMP)P51
DATA RECEPTION
DATA TRANSMISSION
TEST
VOUT(2.5V)
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
46
45
2 x fHz
21
1
CN202
76
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
50
R245 51k
R218 10k
P42
75
74
P34
73
P33
72
P32
71
P31
70
P30
69
68
67
66
65
P26
64
63
62
61
60
59
58
P21
57
P20
56
55
P17
54
53
P15
52
51
R244 10k
10k
R246
CN203
CN203
CN201
3
16 25 29 26 27
11
44
33
1
18
18
C226
0.56
6.3V
R249
R254 100k
C217
0.1 16V
IC203
BD4729G
O
G
GNC
R252 20k
C220
0.01
I
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
1
R/B
VC
2 7
Vcc
GND
3
CS
DO
4
SK
DI
C216 0.01
8
6
5
R255
R256
10k
R257
10k
8
28
CN202
JX1
IC204
S13033LU
Vin
C225 100 16V
C213
0.01
Vo
G
C214
+
100
C231
6.3V (FC)
CN201 20
CN201 19
CN203 4
20
19
36
R238 27k
+
R239 1k
R241 1k
R240 1k
ECU1
93
SC
HEMATIC DIAGRAM 4
/5
CN-FW1
FM
(XH7-5)
654321 7
C75
0.047 25V
C74
0.047 25V
Q8
DTA143XK
1Ok
1Ok
4.7k
4.7k
R102 10k
Q10
C65
0.22 630V
R76
R199
160
PTC3
ZPC56CH251A1UC
RY-1
ALA2ZF12E01
R75 10k
R73
5.11k 1%
Q7
DTC143XK
1Ok
4.7k
C60
R72
1000p
1k
(MB)
CN-HOT
(VH3-2)
5W 5%
+
C61 10 50V
R74
5.11k 1%
2SC2411KRTX
R187 332
1%
21
3
D20
ERA15-06
Q16
R69 10k
4 WAYS
VALVE
D23
ERA15-06
c
b
e
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
9
4
3 2 1
8
10k x 6
14
R43
6
5 3
4
1
2
13
12 10
11
9
8
7
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
1%
8
3
1
C82
0.047 25V
2
4
IC8
8
1
16
2
R15 470
15
3
14
4
13
5
12
6
11
7
10
9
IC5 TD62003AF
R8501V-40 x 4
EXPANSION
VALVE MOTOR
LED
D24 D25 D26 D27
654321
CN-STM
(XH6)
R70
94
SC
HEMATIC DIAGRAM
5/5
T101 ETXMJ326X1C
d 1
e
C29
0.22 630V
f
(MF)
b
c
a
AUO1A x 3
D12
2W
+
+
+
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
7
+
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
1%
R183 39.2k
6
5
1%
C30
R30
+
47
33
25V
(FC)
ZD7
C80
C43
C47
0.047 25V
D7 ERA2204-04
+
C21 470 25V (FC)
D8 ERB83-006
2
C25
+
470 25V
3
4
D9 ERA22-04
5
6
Q1
3 4
HV1C1
2
Vcc
1
IN
COM
7 8
HV1C2
6
Vcc
5
IN
COM
12
13
HV1C3
10
Vcc
9
IN
11
COM
LVIC
14
19
20
21
18
15
Vcc
IN(X)
IN(Y)
IN(Z)
VFO
GND
U OUT
V OUT
W OUT
CCT
roc
0.022
R21
+
HO
CE
HO
CE
HO
CE
C48
(MB)
C28 470 25V (FC)
C
C
C
25V
17
0.01
R23
C49
0.022 25V
(MB)
C22
R24 10 1W
R25
4.7k 1/4W
16
R67 82.5
1%
C73
0.022 25V (MB)
NJM78M15F
IC1
0.01
R19 10 1W
R26
R83 R82
+
C24
C23
100 25V
R20
NJM78M05F
10
IC2
1W
C26
0.01
+
C27 100 16V
C50
0.47 630V (MDS)
P
22
U
23
V
24
RED
U
BLUE
V
COMPRESSOR
W
25
N
26
R64 R63
R62 R61
R60 R59
R58 R57
R56 R55
R54 R53
R52 R51
R66 R65
R50 R49
R10
+
C8
4.99k
10
1%
50V
YELLOW
W
CN-DIS(XH3)
3 2 1
DISCHARGE TEMP SENSOR (50k 3950)
95
R13 470
R14 10k
R12
C10 10 50V
R11
15k
15.8k
1%
1%
++
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)
96
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.
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.
97
18.1. REMOTE CONTROL
98
18.2. PRINT PATTERN INDOOR UNIT PRINTED CIRCUIT BOARD
99
18.3. PRINT PATTERN OUTDOOR UNIT PRINTED CIRCUIT BOARD VIEW
100 [MAICO] Printed in Malaysia
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