Acson A5CK20A User manual

Ceiling Cassette

Split Systems

ACK-A_B_C-2006

A5CK20A/AR

A5CK25A/AR

A5CK30A/AR

A5CK40A/AR

A5CK50A/AR

A5CK1 0C/CR

A5CK15C/CR

A5CK2 0C/CR

Models:

ISO 9002

REGISTERED

1. NOMENCLATURE

INDOOR

B BFA

Model T

R : Heatpump

Omitted if Cooling Only

Series

A : A Series

B : B Series

C : C Series

Capacit

20 : 20,000 Btu/h

Model Name

CK : Ceiling Cassette

Refrigerant

5 : R410A

Omitted if R22

Brand

A : Acson

Electrical Characteristic

F : For Flare

e of Connection

Product Specification Variation

: Revision

A : 220 – 240V/1Ph/50Hz

K : 208 – 230V/1Ph/60Hz

CK 20 A R

O APCA

Model T

R : Heatpump

Omitted if Coolin

Onl

Series

C : C series

Capacit

20 : 20,000 Btu/h

Model Name

LC : Single Split Condensing Unit

Refri

erant

5 : R410A

Omitted if R22 Model

Brand

A : Acson

Electrical

A : 220-240V/1Ph/50Hz

Market Re

ion

P : Matsushita Rotary

M : Mitsubis

hi Rotary

Compressor

Specifications Variation

O : Standard Unit

B : with Contactor

G : Low Ambient Unit

H : High Ambient Unit

Others

: First issue

C : Export with CE marking

E : Export without marking

U : ETL spec

LC 20 C R5A

T : Toshiba Rotary

I : Gold Fins

L : Long Piping Unit

S : With H/L Pressure Switch

X : Oxygen Unit

OUTDOOR

2. FEATURES

ULTRA SLIM NEW STYLISH DESIGN PROFILE

This unit is contemporary in design and match even the most up to date interior decor. The slim, (only

20mm for C-series, 22 mm for B-series and only 28 mm for A-series) and round profile front panel of this

unit adds a touch of elegance to every decor.

TURBO MIXED FLOW FAN

Innovative design of highly efficient turbo fan produces an even air circulation in all direction.

BUILT-IN HIGH HEAD DRAIN PUMP

The unit has a built-in high head drain pump (with 700 mm drain head) to provide and ensure smoothness

drainage of condensate water.

STRONG AND ROBUST

The unit is built from strong casing material and robust parts to ensure long lasting reliable service. The

drain pan is made from the POLYSTYRENE with a plastic coating on the surface to ensure no leaking and

condensation occur.

FRIENDLY SERVICEABILITY

The air filter, electrical parts, fan, fan motor and drain pump can all be inspected and replaced from the

bottom of the unit by simply removing the air intake grille. The POLYSTYRENE drain pan and the heat

exchanger coils can be removed from the unit easily by removing the front panel.

MICROCOMPUTER REMOTE CONTROLLER

The incorporated microprocessor offers more accurate control and with the following extra features:

• Fan motor speed can be set at high/medium/low or automatic.

• Timer on/off - the unit can be pre-set to switch on and off automatically.

• Electronic thermostat - room temperature is precisely controlled, resulting in energy saving and increase

comfort.

WIRELESS REMOTE CONTROLLER

The compact wireless remote controller makes it possible to operate the air conditioner anywhere within the

room.

11. CONTROLLER

G12 REMOTE CONTROLLER

Temperature Setting

•To set the desired room

temperature, press the button to

increase or decrease the set

temperature.

•The temperature setting range is

from 16°C to 30°C

•Press both buttons simultaneously

to toggle the temperature setting

between °C and °F

Turbo Mode

•Press the TURBO button to

achieve the required set

temperature in a short time.

ON Timer Setting

•Press the SET button will activate

the on timer function.

•Set the desired on time by pressing

the SET button continuously.

•Press the CLR button to cancel the

off timer setting

Sleep Mode

•Press the button to activate sleep

mode. This function is available

under COOL, HEAT & AUTO

mode.

•When it is activated in COOL

mode, the set temperature will be

increased 0.5°C after 30mins, 1°C

after 1 hour and 2°C after 2 hours.

•When it is activated in HEAT

mode, the set temperature will be

decreased 1°C after 30mins, 2°C

after 1 hour and 3°C after 2 hours.

Personalised Setting

•Press and hold the button for 3s to

initiate personalized setting.

•Set the individual setting e.g.

MODE, SET TEMP or FAN SPEED

and leave for 4s to save

•2 groups of settings are allowed to

stored in the handset

Fan Speed Selection

•Press the button until the desired

fan speed is achieved.

Operating Mode

•Press the MODE button to select

the type of operating mode.

•For Cooling only unit, the available

modes are: COOL, DRY & FAN.

•For Heatpump unit, the available

modes are: AUTO, COOL, DRY,

FAN & HEAT.

OFF Timer Setting

•Press the SET button will activate

the off timer function.

•Set the desired off time by

pressing the SET button

continuously.

•Press the CLR button to cancel the

off timer setting

Automatic Air Awing

•Press the SWING button to activate

the automatic air swing function.

•To distribute the air to a specific

direction, press the SWING button

and wait until the louver move to

the desired direction and press the

button once again.

On/Off Button

•Press Once to start the air

conditioner

•Press again to stop the unit

Clock Time Setting

•Press button + or - to increase or

decrease the clock time.

Ionizer

•Press the button to activate the

negative Ion function, which will

refresh the indoor air effectively.

COOL

DRY

HEATMED

HIGH

AUTO

MODE

TEMP

SENSOR

ON/OFF

SLEEP

LOW

TIMER

FAN

ON/OFF

SLEEP

TIMER MODE

SWING

FAN

SLM AC-5300 (OPTIONAL)

1. “ON/OFF” switch 6. “Sleep” mode

• Press to start the air conditioner unit. • Press button to activate the sleep

• Press again to stop the unit. function can only be activated under

“cool” or heating mode operation.

2. Temperature setting activated under “cool” mode operation, the

• Set the desired room temperature. set temperature will increase 0.5°C after 30

• Press button to increase or decrease the minutes, 1°C after 1 hour and 2°C after 2

set temperature. Setting range are between hours. If it is actiaved under “HEAT” mode

16°C to 30°C (60°F to 80°F). operation, the set temperature will be

descreased 0.5°C after 30 minutes, 1°C

3. Operation Modes after 1 hour and 2°C after 2 hours.

• Press the “mode” button for select the type

of operating mode. 7. Air Swing

- Cooling Only : • Press button to activate the automatic air

COOL, DRY, FAN swing function.

- Heat Pump :

AUTO, COOL, DRY, HEAT, FAN 8. Sensor

(AUTO mode is represented by both • Infra red sensor to receive signals from

COOL and HEAT LED light on) wireless controller.

4. Fan Speed selection. 9. LED Display

• Press the button until the desired fan speed • To display the set temperature (in °C) and

is achieved. timer delay setting (in hours).

5. Timer. 10. Transmission source

• Press the set button to select the switch • To transmit signals to the air conditioner.

timer of the air conditioner unit (the setting

range is between 1 to 10 hours).

OPERATING STATE AND FAULT TABLE

WIRELESS REMOTE CONTROL (UNIVERSAL BOARD)

COOLING : LED INDICATOR LIGHT DISPLAY HEATPUMP : LED INDICATOR LIGHT DISPLAY

{ON {/ zON or OFF



BLINKING

WIRED REMOTE CONTROL (UNIVERSAL BOARD)

Cooling / Heatpump Model

Error Code at 7 Segment Display Operation / Faulty Indication

Blink E1 Room sensor contact loose / short

Blink E2 Indoor coil sensor contact loose / short

Blink E3 Outdoor coil sensor contact loose / short

Blink E4 Compressor overload

Blink E5 Gas leak

Blink E6 Pump faulty

Blink Heat LED Outdoor defrost (for Heatpump only)

POWER TIMER SLEEP POWER TIMER HEAT

Operation / Faulty Indication

{Cool Mode

{{ Timer On

{{

Sleep Mode On

{{

Heat Mode

{Auto Mode - Cool

{{

Auto Mode - Heat



Continuously

{/ zFrost Prevention Mode



Once every 3 sec

Compressor Overload



Twice every 3

sec

Pump Fault



3 times every

3 sec

Gas Leak



4 times every

3 sec

Room / Indoor / Outdoor Coil

Sensor Contact Loose / Short

POWER TIMER SLEEP HEAT

WATER PUMP

The water pump will on if compressor is on during cooling cycle. The pump will remain on for at least 5

minutes after the compressor is off.

During mode change from cooling to non-cooling mode, the pump will on for minimum 5 minutes. During

defrost cycle, the pump will on and will on for another 5 minutes once the defrost cycle is terminated.

WATER LEVEL SWITCH

This normally close switch is to detect faults in water pump system. It will confirm for 30 seconds for switch

open and 60 seconds for switch close.

Once switch is confirmed open, it will force compressor to cut off. If the switch is closed within 5 minutes,

the compressor is allowed to cut in. If the switch does not close for more than 5 minutes, the system will

warn user regarding the fault, the compressor is not allowed to cut in. If the switch is confirmed opened

twice within 30 minutes, the system assumes there are faults.

PHASE SEQUENCER

The unit with Scroll Compressor can only rotate in one direction. For this reason, a protective device

(phase sequencer) is fitted to prevent incorrect wiring of the electrical phases. When the three phases are

not connected correctly, the phase sequencer operates, and the unit will not start. This devise is located in

the control box of the outdoor unit.

The following table shows the LED indicator light for phase sequencer under normal operation and fault conditions.

LED_P

(Red)

LED_R

(Yellow)

LED_S

(Yellow)

LED_T

(Yellow)

Normal Operation On - - -

Reverse Phase Blink Blink Blink Blink

S & T Phase Missing Blink - Blink Blink

T Phase Missing Blink - - Blink

S Phase Missing Blink - Blink -

R Phase Missing - - - -

Overload Blink - - -

Sensor Missing Blink On On On

Notes: 1. “-” means LED off.

2. When R phase missing, no LED or buzzer will indicate the error, but relay 71 (Common) and 81 (NO)

will cut off.

3. The unit will check the discharge sensor availability only during power up.

4. All errors can only recover through manual reset.

13. SERVICING AND MAINTENANCE

Warning: Disconnect from main supply before servicing the air conditioner

The unit is designed to give long life operation with minimum maintenance required. However, it should be

regularly checked and the following items should be given due attention.

Components Maintenance Procedures Recommended Schedule

Air Filter

(Indoor Unit)

1. Remove any dust adhering to the filter by using a

vacuum cleaner or wash in lukewarm water (below

40 C) with a neutral cleaning detergent.

2. Rinse the filter well and dry before placing it back onto

the unit.

3. Note: Never use gasoline, volatile substances or

chemicals to clean the filter.

At least once every 2 weeks.

More frequently if necessary.

Indoor Unit 1. Clean any dirt or dust on the grille or panel by wiping it

with a soft cloth soaked in lukewarm water (below

40 C) and a neutral detergent solution.

2. Note: Never use gasoline, volatile substances or

chemicals to clean the indoor unit.

At least once every 2 weeks.

More frequently if necessary.

Condense Drain

Pan & Pipe

1. Check the cleanliness and clean it if necessary.

2. Check the condensate water flow.

Every 3 months.

Indoor Fan Check if there is any abnormal noise. If necessary.

Indoor / Outdoor

Coil

1. Check and remove the dirt between the fins.

2. Check and remove any obstacles which hinder air flow

through the indoor or outdoor.

Every month.

Power Supply 1. Check the running current and voltage for indoor and

outdoor unit.

2. Check the electrical wiring and tighten the wire onto the

terminal block if necessary.

Every 2 months.

Every year.

Compressor No maintenance needed if refrigerant circuit remains

sealed. However, check for refrigerant leak at joint and

fitting.

Every 6 months.

Compressor Oil Oil is factory charged. Not necessary to add oil if circuit

remains sealed.

No maintenance required.

Fan Motor Oil All motors are pre-lubricated and sealed at factory. No maintenance required.

Pre Start Up Maintenance

(After Extended Shutdown)

- Inspect thoroughly and clean indoor and outdoor units.

- Clean or replace air filters.

- Clean condensates drain line.

- Clean clogged indoor and outdoor coils.

- Check fan imbalance before operation.

- Tighten all wiring connections and panels.

- Check for refrigerant leakage.

14. TROUBLESHOOTING

When a malfunction of the air conditioner unit is detected, immediately switch off the main power supply before

proceeding with the following troubleshooting procedures.

The following are common fault conditions and simple troubleshooting tips. If any other fault conditions which

are not listed occur, contact your nearest local dealer. DO NOT attempt to troubleshoot the unit by yourself.

No Fault conditions Possible causes / corrective actions

1 The air conditioner unit will not resume after

power failure.

xThe auto restart function is not functioning. Please

turn on the unit with the wireless / wired controller.

2 The compressor does not operate 3 minutes

after the air conditioner unit is started.

xProtection against frequent starting.

xWait for 3 or 4 minutes for the compressor to start

operating by it self.

3 The airflow is too slow or room cannot be

cooled sufficiently.

xThe air filter is dirty.

xThe doors and windows are opened.

xThe air suction and discharge of both indoor and

outdoor units are clogged or blocked.

xThe regulated temperature or temperature setting

is not low enough.

4 Discharge airflow has bad odor. xCigarettes, smoke particles, perfume and others,

which might have adhered onto the coil, may

cause odor.

xContact your nearest dealer.

5 Condensation on the front air grille of the indoor

unit.

xThis is caused by air humidity after an extended

period of operation.

xThe set temperature is too low. Increase the

temperature setting and operate the unit at high

fan speed.

6 Water flowing out from the air conditioner. xSwitch off the unit and contact your nearest

dealer. This might be due to tilted installation.

7 Hissing airflow sound from the air conditioner

unit during operation.

xLiquid refrigerant flowing into the evaporator coil.

8 The wireless controller display is dim. xThe batteries are discharged.

xThe batteries are not correctly inserted.

xThe assembly is not good.

9 Compressor operates continuously. xDirty air filter. Clean the air filter.

xTemperature setting too low (cooling). Use higher

temperature setting.

xTemperature setting too high (heating), Use lower

temperature setting.

10 No cool air comes out during cooling cycle, or

no hot air comes out during heating cycle.

xTemperature setting too high (cooling). Use lower

temperature setting.

xTemperature setting too low (heating). Use higher

temperature setting.

11 On heating cycle, warm air does not come out. xUnit is in defrost mode. Heating operation will

resume after defrost cycle ends.

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