Panasonic CW-A90VE User manual

1 Product Specifications 2
2 Dimensions 3
3 Refrigeration Cycle Diagram 4
4 Wiring Diagram 5
5 Air Conditioner Performance Evaluation 6
6 Troubleshooting Guide 6
7 Operating Instructions 8
© 2002 Matsushita Industrial Corp. Sdn. Bhd.
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
CW-A90VE
CW-A120VE
8 Installation Instructions 10
9 Care and Maintenance 13
10 Servicing Information 14
11 Technical Data 16
12 Electronic Circuit Diagram 19
13 Exploded View 20
14 Replacement Part List 21
Room Air Conditioner
CONTENTS
Page Page
Order No. MAC0211078C2

1 Product Specifications
Model CW-A90VE CW-A120VE
Cooling Heating Cooling Heating
Phase Single Single
Voltage 220 - 230 V 220 - 230 V
Frequency 50 Hz 50 Hz
Capacity 2.67 - 2.68 kW
9,100 - 9,140 Btu/h 2.55 - 2.57 kW 8,700 - 8,760 Btu/h 3.40 - 3.42 kW 11,600 - 11,700 Btu/h 3.14 - 3.17 kW 10,700 - 10,800 Btu/h
Running Current 4.5 - 4.5 A 3.8 - 3.9 A 6.5 - 6.9 A 5.3 - 5.7 A
Input Power 980 - 1,03K W 820 - 880 W 1.36 - 1.48 kW 1.10 - 1.21 kW
EER W/W 2.72 - 2.60 W/W ------ 2.50 - 2.31 W/W ------
BTU/hW 9.3 - 8.9 ------ 8.5 - 7.9 ------
COP W/W ------ 3.11 - 2.92 W/W ------ 2.85 - 2.62 W/W
BTU/hW ------ 10.6 - 10.0 ------ 9.7 - 8.9
Starting Current 20 A 27 A
Noise Level Indoor (High / Low):
45 / 42 - 46 / 43 dB(A)
Outdoor (High / Low):
52 / 50 - 53 / 51 dB(A)
Indoor (High / Low):
44 / 41 - 45 / 42 dB(A)
Outdoor (High / Low):
54 / 52 - 55 / 53 dB(A)
Indoor (High / Low):
48 / 45 - 49 / 46 dB(A)
Outdoor (High / Low):
56 / 53 - 57 / 54 dB(A)
Indoor (High / Low):
48 / 45 - 49 / 46 dB(A)
Outdoor (High / Low):
58 / 55 - 59 / 56 dB(A)
Power Noise Level Indoor: 58 dB(A)
Outdoor: 64 dB(A) Indoor: 56 dB(A) Outdoor: 66 dB(A) Indoor: 62 dB(A) Outdoor: 68 dB(A) Indoor: 61 dB(A) Outdoor: 70 dB(A)
Fan Motor Output 32/36 W 46/51 W
Compressor Output 800 W 950 W
Moisture Removal 1.6 Ltr/h
3.4 Pint/h 2.0 Ltr/h 4.2 Pint/h
Air Circulation 8.5 m3/min.
300 Ft3/min. 9.5 m3/min. 340 Ft3/min.
Dimensions Height: 14-25/32 inches (375 mm)
Width: 22-1/16 inches (560 mm)
Depth: 23-7/8 inches (606 mm)
Height: 14-25/32 inches (375 mm)
Width: 22-1/16 inches (560 mm)
Depth: 23-7/8 inches (606 mm)
Net Weight 35 kg
77 Ib 39 kg 86 Ib
Refrigerant (R-22) 550 g
19.4 oz 650 g 22.9 oz
Note: Specifications are subject to change without notice for further improvement.
2
CW-A90VE / CW-A120VE

2 Dimensions
2.1. CW-A90VE, CW-A120VE
2.1.1. Top View, Front View & Side View
2.2. Unit
Item Unit: Inch (mm)
A - Width 22-1/16” (560)
B - Height 14-25/32” (375)
C - Depth 23-7/8” (606)
D 11-9/16” (294)
E1-13/16” (46)
F 11-3/32” (281.6)
G 1-13/32” (281.6)
3
CW-A90VE / CW-A120V
E

3 Refrigeration Cycle Diagram
3.1. CW-A90VE & CW-A120VE
Note: Indoor temperature at 27°C (DB), 19°C (WB) and Outdoor at 35°C (DB), 24°C (WB) for Cooling & indoor temperature at
20°C (DB), 15.5°C (WB) and Outdoor at 7°C (DB), 6°C (WB) for Heating.
3.1.1. Cooling
CW-A90VE CW-A120VE
Item Pressure (MPa) Temperature (°C) Pressure (MPa) Temperature (°C)
A 1.81 ~ 2.01 67 ~ 82 2.09 ~ 2.28 67 ~ 82
B 1.76 ~ 1.96 38 ~ 48 2.04 ~ 2.23 37 ~ 47
C 0.51 ~ 0.57 7~12 0.53 ~ 0.59 8~13
D 0.48 ~ 0.54 10 ~ 17 0.50 ~ 0.56 8~15
3.1.2. Heating
CW-A90VE CW-A120VE
Item Pressure (MPa) Temperature (°C) Pressure (MPa) Temperature (°C)
A0.40 ~0.46 0~5 0.37 ~ 0.43 -1 ~ 4
B 0.43 ~ 0.49 -1 ~ 4 0.40 ~ 0.46 0~5
C 1.52 ~ 1.72 31 ~ 41 1.51 ~ 1.71 31 ~ 41
D 1.57 ~ 1.76 42 ~ 52 1.56 ~ 1.75 41 ~ 51
4
CW-A90VE / CW-A120VE

4 Wiring Diagram
4.2. Resistance of Compressor
windings and the rated
Capacitor.
CW-A90VE CW-A120VE
Connection CWB092184 2KS206D5DA04
C-R 3.466Ω2.293Ω
C-S 3.843Ω3.245Ω
Capacitor DS371306CPNA
(30µF, 370VAC) DS371356CPNA (35µF, 370VAC)
Note: Resistance at 20°C of Ambient Temperature.
4.3. Resistance of Fan Motor
windings and the rated
Capacitor.
CW-A90VE CW-A120VE
Connection CWA951228 CWA921145
Blue - Yellow 205.8 Ω84.1 Ω
Yellow - Orange 75.2 Ω55.6 Ω
Red - Orange 170.0 Ω118.3 Ω
Capacitor CWA31618
(2.0µF, 440VAC) DS441305BPQH (3µF, 440VAC)
4.1. CW-A90VE & CW-A120VE
5
CW-A90VE / CW-A120V
E

5 Air Conditioner Performance Evaluation
5.1. Cooling
Intake & Discharge Air
Temperature Difference Current Drain Determination Remedy
• • •
• 8°C and over (14.4°F)
• • •
• As specified.
• • •
• Nothing wrong.
• • •
• None.
• • •
• 8°C and over (14.4°F)
• • •
• Higher than specified.
• • •
• Nothing wrong, outdoor
temperature is too high, heat
radiation is not efficient.
• • •
• Improve heat radiation.
• • •
• Under 8°C (14.4°F)
• • •
• Higher than specified.
• • •
• Something is preventing heat
radiation.
• • •
• Excessive amount of refrigerant.
• • •
• Improve heat radiation.
• • •
• Under 8°C (14.4°F)
• • •
• Lower than specified.
• • •
• Leakage of refrigerant or
refrigerant system is blocked.
• • •
• Locate and repair leak.
• • •
• Flush refrigeration cycle.
• • •
• Under 8°C (14.4°F)
• • •
• Higher than specified by
50%.
• • •
• Compressor defect or
compressor capacitor defect.
• • •
• Replace the compressor or
compressor capacitor.
Note: Room air humidity is relatively higher, the temperature difference will be smaller.
5.2. Heating
Intake & Discharge Air
Temperature Difference Current Drain Determination Remedy
• • •
• 14°C and over (25.2°F)
• • •
• As specified.
• • •
• Nothing wrong.
• • •
• None.
• • •
• 14°C and over (25.2°F)
• • •
• Higher than specified.
• • •
• Nothing wrong, outdoor
temperature is high.
• • •
• Something is preventing heat
radiation at indoor heat
exchanger.
• • •
• None.
• • •
• Clean air filter.
• • •
• Under 14°C (25.2°F)
• • •
• Lower than specified.
• • •
• Nothing wrong, outdoor
temperature is low.
• • •
• Something is preventing heat
radiation at outdoor heat
exchanger.
• • •
• Leakage of refrigerant.
• • •
• Refrigerant system is blocked.
• • •
• None.
• • •
• Improve heat radiation at outdoor
heat exchanger.
• • •
• Locate and repair leak.
• • •
• Flush refrigeration cycle.
• • •
• Under 14°C (25.2°F)
• • •
• Higher than specified by
50%.
• • •
• Compressor defect.
• • •
• Compressor capacitor defect
• • •
• Replace the compressor.
• • •
• Replace the compressor
capacitor.
Note: Room air humidity is relatively higher, the temperature difference will be smaller.
6 Troubleshooting Guide
Warning: Disconnect unit from electrical power supply before making any electrical checks.
Trouble Check Result Cause Remedy
Fan Motor and
Compressor won’t run.
• • •
• Supply Voltage
• • •
• Fuse Box or Circuit
Breaker.
• • •
• Power cord or
Wiring Harness.
• • •
• Temperature
Setting.
• • •
• Less than 10% by
Rated.
• • •
• Open Contacts.
• • •
• Pulled loose or
Shorted.
• • •
• Higher than room
temperature
• • •
• Temporary or Permanent?
• • •
• Customer Restarted unit
immediately without waiting
3 minutes.
• • •
• Consult ELECTRICIAN, if
permanent.
• • •
• WAIT FOR 3 MINUTES.
• • •
• Repair Open Circuit.
• • •
• Repair or Replace it.
• • •
• Set it LOWER.
Fan Motor won’t run
(Compressor run).
• • •
• Objects around
Fan.
• • •
• RESISTANCE
between Wires.
• • •
• Capacitor Fan
Motor.
• • •
• Main Control
Switch.
• • •
• Locked Fan.
• • •
• Shorted / Open
circuit.
• • •
• OHM Meter doesn’t
Deflect.
• • •
• No contacts at
Position Shown.
• • •
• Fan Hitting Cowling
• • •
• Foreign Materials.
• • •
• Frozen Bearings.
• • •
• Shorted or Burned out.
• • •
• Capacitor Defect.
• • •
• Main Control Switch defect.
• • •
• Adjust Fan position setting
screw.
• • •
• Remove Foreign Materials.
• • •
• Replace Fan Motor.
• • •
• Replace Fan Motor.
• • •
• Replace Capacitor Fan.
• • •
• Replace Main Control
Switch.
6
CW-A90VE / CW-A120VE

Trouble Check Result Cause Remedy
Compressor won’t run
(Fan run).
• • •
• Temperature
setting.
• • •
• RESISTANCE
between Terminal
and the
Compressor Body.
• • •
• RESISTANCE
between Terminals.
• • •
• Overload Protector.
• • •
• Capacitor
Compressor.
• • •
• Thermostat.
• • •
• Main Control
Switch.
• • •
• Higher than room
temp.
• • •
• Shorted.
• • •
• Shorted.
• • •
• Infinity between
Terminals.
• • •
• OHM Meter doesn’t
deflect.
• • •
• No click heard.
• • •
• No contacts at
Position Shown.
• • •
• Winding Coil touched to
the compressor shell.
• • •
• Rear Shorted or Burnt out.
• • •
• Rear Shorted or Burnt out.
• • •
• Overload Protector defect.
• • •
• Capacitor defect.
• • •
• Thermostat defect.
• • •
• Main Control Switch defect.
• • •
• Set it lower.
• • •
• Replace Compressor.
• • •
• Replace Compressor.
• • •
• Replace Overload
Protector.
• • •
• Replace Capacitor
Compressor.
• • •
• Replace Thermostat.
• • •
• Replace Main Control
Switch.
Air Swing won’t run.
• • •
• Air Swing Switch.
• • •
• Resistance
between wires.
• • •
• OFF position.
• • •
• No contact at
position.
• • •
• OHM Meter doesn’t
deflect.
• • •
• Open circuit.
• • •
• Shorted or open circuit.
• • •
• Set it ON.
• • •
• Replace Air Swing Switch.
• • •
• Replace Air Swing Motor.
Insufficient cooling or
heating.
• • •
• Temperarute
Setting.
• • •
• Ventilation door
open.
• • •
• Air filter dirty.
• • •
• Location of
installation.
• • •
• Evaporator /
Condenser Coil
obstructed.
• • •
• Unit capacity for
the room too small.
• • •
• Temperature
difference and
running current.
• • •
• Higher than room
temperature
• • •
• Open.
• • •
• Clogged or dirty.
• • •
• Sunlight hitting
outdoor side.
• • •
• Obstacles.
• • •
• Clogged or dirty.
• • •
• Not satisfied.
• • •
• REFER TO
PERFORMANCE
EVALUATION.
• • •
• Reduces capacity.
• • •
• Restricted air circulation.
• • •
• Restricted Heat Exchanger.
• • •
• Restricted Heat Exchanger.
• • •
• Restricted air circulation.
• • •
• Leakage of refrigerant or
refrigeration system is
blocked.
• • •
• Set it lower.
• • •
• Close Ventilation door.
• • •
• Clean or replace Air Filter.
• • •
• Consider building an
AWNING.
• • •
• Remove obstacles or
reinstall unit.
• • •
• Clean the coils.
• • •
• Replace the unit with
bigger one.
• • •
• Locate repair leak.
• • •
• Flush refrigeration cycle.
Noise.
• • •
• Source of Noise
• • •
• Vibration.
• • •
• Intermittent Noise.
• • •
• Faulty installation.
• • •
• Fan hitting objects.
• • •
• Refrigerant tubing touching
each other.
• • •
• Fan splashing Drain Water
• • •
• Reinstall unit or Reinforce
the installation.
• • •
• Adjust Fan position or
remove foreign materials.
• • •
• About 1/2” Clearance
needed.
• • •
• Remove drain plug and
mount a drain pan to
remove the water.
• • •
• Set the Drain outlet
downward, so that the
Drain water can run off
Water dripping inside
room.
• • •
• Unit installation.
• • •
• Drain Tray-
Styrofoam pieces
blocking drain
channel.
• • •
• Tilted to inside room.
• • •
• Clogged.
• • •
• Restricted run off.
• • •
• Clogged or blocked.
• • •
• Tilt unit to outside slightly.
• • •
• Remove the foreign
materials.
Frozen Evaporator
• • •
• Temperature
setting.
• • •
• Air filter /
Evaporator.
• • •
• Temperature
difference and
running current.
• • •
• Set too low for
ambient conditions.
• • •
• Clogged or Dirty.
• • •
• REFER TO
PERFORMANCE
EVALUATION.
• • •
• Outdoor temperature low
(Night time).
• • •
• Restricted air circulation.
• • •
• Leakage of refrigerant or
refrigeration system is
blocked.
• • •
• Set the Main Control Knob
to Fan to melt ice and set
the Temperature control to
higher temperature.
• • •
• Clean Air filter /
Evaporator.
• • •
• Locate and repair leak.
• • •
• Flush refrigeration cycle.
No heating (Fan and
Compressor run).
• • •
• Reversing valve
coil.
• • •
• Reversing valve.
• • •
• Infinity between coil.
• • •
• Resistance between
reversing valve coil.
• • •
• Replace reversing valve
coil.
• • •
• Replace reversing valve.
Frozen Condenser
• • •
• Outdoor ambient
temperature
• • •
• Heating operation at
low outdoor ambient
temperature
• • •
• Outdoor ambient
temperature is low.
• • •
• Set Main Control Switch to
Fan to melt ice.
7
CW-A90VE / CW-A120V
E

7.1. Parts Identification
7.1.1.1. Vertical Airflow Direction Vane
Airflow direction adjustment up-down.
• • •
• The vertical airflow direction vane is
controlled by rotating the horizontal
vane forward or backward.
7.1.1.2. Ventilation Lever
The ventilation lever must be in the CLOSE
position in order to maintain the best cooling
conditions.
When fresh air is necessary in the room, set
the ventilation lever to the OPEN position.
The damper is opened and room air is drawn
out.
7 Operating Instructions
7.1.1. Main Unit
7.1.1.3. Main Control Panel
8
CW-A90VE / CW-A120VE

7.1.2. Operating Conditions.
Use the air conditioner under the following conditions:
• • •
• Operating temperature range.
Indoor side Outdoor side
D.B.T. W.B.T. D.B.T. W.B.T.
Cooling Maximum Temperature 32°C 23°C 43°C 26°C
Minimum Temperature 21°C 15°C 21°C 15°C
Heating Maximum Temperature 27°C ---- 21°C 15°C
Minimum Temperature 20°C ---- -5°C -6°C
D.B.T.: Dry Bulb Temperature
W.B.T.: Wet Bulb Temperature
Note: Humidity may exceed 90%.
− − −
− Continuous operation at humidities of over 90% high
humidity may create condensation to form on the intake
and outlet vanes.
7.2. How to Operate.
Fig. 1
(1) Open the Control Panel Cover.
Fig. 2
(2) Power Supply
Switch off the breaker and set the main control knob to the
OFF position before plugging the power plug into an
electrical outlet.
Fig. 3
(3) Main Control Knob
Set to LOW COOL or HIGH COOL as desired. (FAN setting
operates the fan only.)
Caution: If the main control knob is turned off or changed to
a fan setting from a cooling operation setting, WAIT at lease
3 minutes before resetting to cooling operation
Fig.4
(4) Thermostat Control Knob
• • •
• For a room that is too warm, set the control knob to a
clock wise direction.
• • •
• If the room is tooo coo, set the contol knob to a counter
closkwise direction.
Note: Usually 6~7 is the recommended setting position.
Fig. 5
(5) Air Swing Switch
(Airflow direction adjustment side-to-side)
To obtain a fixed airflow direction, set the air swing switch to
“ON” for the vanes to swing from side to side until the
desired flow direction is reached, then switch it to “OFF”.
For continuous side-to-side air circulation, set the air swing
switch to “ON”.
9
CW-A90VE / CW-A120V
E

1.Remove the screws from the rear cabinet. Slide the chassis
out from the cabinet. 2.Place cabinet into the installation hole.
8 Installation Instructions
8.1. Selecting The Best Location
• • •
• Install the unit to the nearest power outlet.
• • •
• Power supply point shall be the place where there is ease for access for power disconnection in case of emergency.
• • •
• The air conditioner should be installed in a dry place where there are no draughts.
• • •
• Condensation fron the air conditioner must be drained off at an appropriate location. (If remove condensed water.)
• • •
• Do not install in a location where flammable gas leaks is a possibility.
• • •
• Usage in locations where the air issalty such as coastal areas or near hot spas, or where sulphurous gas is generated, may lead
to a malfunction. Please consult your dealer.
• • •
• Select an installation location which is rigid and strong enough to support or hold the unit and select a location for easy
maintanance.
• • •
• It may need two people to carry out the installation work.
• • •
• Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.
8.2. Preparation Before Installation
8.2.1. Dimension
• • •
• There should not be any obstacles surrounding the unit.
• • •
• Prepare an installation hole slightly bigger than the cabinet size.
• • •
• Left and right sides of the unit should be at least 15 cm away from the wall.
8.3. Installation Procedures
10
CW-A90VE / CW-A120VE

3.Slide the chassis back into the cabinet. Reinstall the cabinet
screws. Secure the cabinet to chassis by using screws
(from rear cabinet).
Depending upon the location of the AC outlet, route the AC
cord to either the left or right side while installing the front
grille.
4.Attach the front grille to the cabinet and fasten it with
screw s.
5. Insert the air filter.
6.Slide the front intake grille slightly to the right to reattach the
tabs and then push it down to close tight.
8.4. Removal of Front Grille
1.Remove the front intake grille.
Pull up the front intake grille about 90° and slide it slightly to
the left to unhook the tabs.
CAUTION
Do not raise the front intake grille any higher than 90° to the
unit or damage to the tabs may occur.
2.Remove the air filter.
Tilt up and pull out the air filter by the holder.
3.Remove the front grille.
a.At bottom right side of the front grille, press inward on
cabinet near the power cord, and pull the grille outward
to the right until right tab releases.
b.At the bottom left side, push inward on cabinet and pull
the grille outward to the left to release the left tab. Do
not pull the bottom edge toward you more than 3 inches
to prevent the two top tabs from damage.
c.Slide the front grille upwards to free the two top tabs
from slots at the top of the cabinet.
11
CW-A90VE / CW-A120V
E

In order to drain off the condensed water, it is recommended
that you install a drain pan using the folowing procedure.
1.Slide the chassis out from the cabinet.
2.Install the drain pan.
Install the drain pan at the left corner of the cabinet.
3.Connect the drain hose.
Bottom side view with drain pan.
NOTE
Drain hose or tubing can be purchased locally to satisfy
your particular needs.
4.Slide the chassis back into the cabinet.
8.5. Electrical Work
• • •
• Always use at the rated voltage and with a specific air conditioning circuit.
• • •
• Some installation locations may require the installation of a short circuit breaker.
• • •
• A 16 Ampere time delay fuse or circuit breaker is required.
• • •
• Nominal cross sectional area of power supply wire must be 3 core x 1.0 mm2or above.
• • •
• The power supply must be from an independent circuit.
• • •
• All electrical installation must be made in accordance with local wiring and safety regulations wherever applicable.
• • •
• There must be a double pole switch with a minimum of 3 mm contact gap in the fixed installation circuit.
• • •
• Please consult your dealer concerning installation requirements.
Note: These equipment shall be connected to a suitable mains network with a main impedance less then the following:-
CW-A90VE: 0.40ΩCW-A120VE: 0.30Ω
8.6. Condensed Water Drainage
12
CW-A90VE / CW-A120VE

8.7. Noise Considerations
• • •
• Select an installation location that can support the weight of
the air conditioner and one that will not cause increased
operating noise and vibration.
• • •
• Ensure that airflow and noise from the rear side of the unit
(outdoor) when installed, do not disturb neighbouring
residents.
• • •
• Obstacles placed in front of the air outlet on the rear side of
the unit (outdoor), or covers placed over it will cause
excessive noise and deterioration in performance.
8.8. Transferring
• • •
• When the air conditioner is to be repositioned or transferred
due to renovations, or moving, the removal and
reinstallation of the unit requires an additional service
charge. Please consult your dealer before moving.
9 Care and Maintenance
Caution:
Always turn off the air conditioner and the main power supply before unplugging the power cord to clean the unit.
Switch off the power supply if the unit is not going to be used for a long period of time.
• • •
• Clean the cabinet, front grille with a mild soap or detergent and lukewarm water.
• • •
• The front intake grille can be easily removed for cleaning purposes (refer Removal of Front Grille procedures). Gently wash
it with water and a sponge.
• • •
• The filter can be easily cleaned using a vacuum cleaner. Vacuum the front of the filter and then wash the rear with water. If it
is badly soiled, wash with a mild household detergent.
• • •
• Do not clean with benzene, thinner, scouring powder or cloth soaked in caustic chemicals.
• • •
• If the unit is extremely dirty, heat transfer is less efficient and the unit may not cool effectively. Contact Shun Hing Electric
Service Centre Ltd. for an annual check. (Annual check is not covered under warranty)
• • •
• If the air filter becomes clogged with dust, the cooling capacity will drop, and 6% of the electricity used to operate the air
conditioner will be wasted.
NOTE
Do not dry the front panel or the air filter in direct sunlight. (Exposure to direct sunlight may discolour or deform the panel.)
13
CW-A90VE / CW-A120V
E

1.Remove the screws in front and both sides of the chassis
as indicated (1), (2) and (3).
2.Release the tabs at both sides of the front grille (push in the
cabinet and pull out the grille).Then, pull up the grille as to
release another two tabs at the top side of the grille.
3.Pull out the knobs from its position (1) & (2) and then take
out the control panel (3). Then, release the temperature
sensor from its holder (4) and pull out the wire from the
bushing at the cabinet (5).
4.Pull out the unit from cabinet by holding the hand grip at the
base pan. Remove two screws in front of the control board
(1) & (2). Then, remove screw at the side of control board
(3) and take out the control board side plate.
5.Hold the horizontal vane and pull it out from the top side
and get it out from its position.
6.Then, remove the shaft at the bottom of the compartment.
10 Servicing Information
10.1. Control Board Removal Procedure
14
CW-A90VE / CW-A120VE

7.Pull out the control board as shown in figure. Then remove
the screw as indicated (1).
8.Release a hook as shown in figure (1) to open up the
control board.
• • •
• Control Board part location.
15
CW-A90VE / CW-A120V
E

11.1. CW-A90VE & CW-A120VE
• • •
• Mechanical Thermostat (Cooling).
11.2.1. CW-A90VE (CWA121091).
• • •
• Mechanical Thermostat (Heating).
11.2.2. CW-A120VE (CWA121077).
11 Technical Data
11.1.1. Thermostat Characteristics.
11.2. Overload Protector Characteristics.
16
CW-A90VE / CW-A120VE

• • •
• Cooling Characteristics Vs. Outdoor Temperature.
• • •
• Cooling Characteristics Vs. Outdoor Temperature.
• • •
• Heating Characteristics Vs. Outdoor Temperature.
• • •
• Heating Characteristics Vs. Outdoor Temperature.
11.3. Operation Characteristics.
11.3.1. CW-A90VE
11.3.2. CW-A120VE
17
CW-A90VE / CW-A120V
E

11.3.3. Heat Sensible Capacity Chart
11.3.3.1. CW-A90VE
230V Outdoor Temp. (°C)
Indoor Wet
Bulb Temp. 30 35 40 46
TC SHC IP TC SHC IP TC SHC IP TC SHC IP
17°C 2.63 2.39 948 2.47 2.30 1020 2.30 2.14 1092 2.09 1.85 1174
19°C 2.68 1030
19.5°C 2.92 2.09 958 2.73 1.96 1030 2.55 1.93 1102 2.33 1.85 1185
22.0°C 3.24 1.96 968 3.03 1.72 1040 2.81 1.53 1123 2.57 1.34 1205
220V Outdoor Temp. (°C)
Indoor Wet
Bulb Temp. 30 35 40 46
TC SHC IP TC SHC IP TC SHC IP TC SHC IP
17.0°C 2.62 2.38 902 2.46 2.30 970 2.30 2.14 1039 2.08 1.84 1117
19.0°C 2.67 980
19.5°C 2.91 2.08 911 2.72 1.95 980 2.54 1.92 1049 2.32 1.84 1127
22.0°C 3.23 1.95 921 3.02 1.71 990 2.80 1.52 1068 2.56 1.34 1147
11.3.3.2. CW-A120VE
230V Outdoor Temp. (°C)
Indoor Wet
Bulb Temp. 30 35 40 46
TC SHC IP TC SHC IP TC SHC IP TC SHC IP
17.0°C 3.35 3.04 1.36 3.15 2.94 1.47 2.94 2.74 1.57 2.67 2.36 1.69
19.0°C 3.42 1.48
19.5°C 3.73 2.67 1.38 3.49 2.50 1.48 3.25 2.46 1.58 2.98 2.36 1.70
22.0°C 4.14 2.50 1.39 3.86 2.19 1.49 3.59 1.95 1.61 3.28 1.71 1.73
220V Outdoor Temp. (°C)
Indoor Wet
Bulb Temp. 30 35 40 46
TC SHC IP TC SHC IP TC SHC IP TC SHC IP
17.0°C 3.33 3.03 1.25 3.13 2.92 1.35 2.92 2.72 1.44 2.65 2.35 1.55
19.0°C 3.40 1.36
19.5°C 3.71 2.65 1.26 3.47 2.48 1.36 3.23 2.45 1.46 2.96 2.35 1.56
22.0°C 4.11 2.48 1.28 3.84 2.18 1.37 3.57 1.94 1.48 3.26 1.70 1.59
18
CW-A90VE / CW-A120VE

12.2. Deice Operation Details.
• • •
• To prevent frosting at outdoor heat exchanger (Condenser)
during heating operation.
− − −
− Deice operation;
1.Deice operation detection commences in heating
operation starts or 60 minutes after previous deice
operation. If the outdoor piping temperature drops to
-1.5°C continuously during compressor is in
operation, deice will start.
− − −
− Deicing ends when;
1.12 minutes after deicing operation starts; or
2.The outdoor piping temperature rises to about 16°C.
− − −
− After deicing operation, compressor stops for 30
seconds and 4-way valve stays at cooling position for 10
seconds.
12.2.1. Deicing Time Diagram.
12 Electronic Circuit Diagram
12.1. Deicer Schematic Diagram
19
CW-A90VE / CW-A120V
E

13 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.
20
CW-A90VE / CW-A120VE