Split System Inverter Air Conditioner (Reverse Cycle) - (KASSAC26R3A / KASSAC52R3A) - Manual

• Press this button to turn the unit on/off
• This will clear the existing timer and SLEEP settings

Speed

• Select the fan speed: Low > Mid > High > Auto (AUTO not available in FAN mode)

Display

• Press to turn display backlight on or off.

iFEEL

• Toggle temperature displays to show ambient/preset temperature.

Timer

• Set ON timer (when the unit is off) or OFF timer (when the unit is on)
• Press the button once, and the indicator will flash
• Use the Up and Down buttons to set the number of hours (interval of 0.5 hours from 0.5-10 hours, 1 hour from 10-25 hours)
• Press again to confirm the setting
• Once setting is confirmed, pressing this button again will cancel the setting
• When an ON timer is set, all function buttons (except SLEEP, DISPLAY and iFEEL) are valid

iCLEAN

• Press with the unit off: the unit will automatically clean the dust off evaporator to increase cooling and heating efficiency

Up and Down (Set)

• Change temperature by 1°C or make changes during settings

Turbo

• Set fan speed to maximum (COOL and HEAT modes)

Mode

• Select mode: Auto > Cool > Dry > Heat > Fan

Sleep

• Sleep for 10 hours and resume operation (cannot be activated in FAN mode)

Swing

• Press to activate louvre swing

Anti-F

• When the unit is turned off with the remote controller (COOL, DRY or AUTO modes), it will operate in HEAT mode with the internal fan running with at low power for 3 minutes before stopping in order to reduce moisture and prevent mould
• To turn the function on or off, press the Anti-F button with the unit turned off and it will beep to confirm: once set, this function will remain enabled except when the unit is power off or until it is cancelled
• This function is not set by default

Issue

Possible Cause

Steps to Resolve

Not turning on

Power outage, blown fuse, loose power plug

Check power and retry

ON timer set

Wait or cancel the timer setting

Does not run after being turned off and on on

Expected function: protective switch will delay operation for 3-5 minutes after being powered off

Stops running after a while

Set temperature reached

Expected function

Defrosting

Will resume automatically

Shutdown timer set

Check and resume

Cooling/heating ineffective

Dust or blockage

Check and clear

Windows/doors opened, blocked exhaust fan

Check and resume

Incorrect mode setting

Check mode and temperature

Odour produced

Environmental issue

Check environment

Mould buildup

Activate cleaning function

Sound of running water

Flow of refrigerant

Expected function

Click at startup/shutdown

Thermal expansion/contraction of unit parts

Expected function

Abnormal sound

Fan, compressor switched on/off

Wait

Sound from defrosting

Expected function

Dust or blockage

Check and clear

Drops of water on the surface of the indoor unit

Ambient humidity high

Expected function

Prolonged cooling in open space

Close windows/doors

The angle of louvre blades too small

Increase angle of louvre blades

The mist produced during cooling

Can occur with high temperature and humidity

Expected function

The Air Conditioner initially turns on, but then slowly it turns down until it turns off.

The filters are blocked.

Manually clean the filters of your Air Conditioner.

1. The wall for installation of the indoor unit shall be hard and firm, so as to prevent vibration.
2. Use the "+" type screw to fasten the pegboard, horizontally mount the pegboard on the wall, and ensure the lateral horizontal and longitudinal vertical.
3. Pull the pegboard by hand after the installation, to confirm whether it is solid.

• Make a hole with an electric hammer or a water drill at the predetermined position on the wall for piping, which shall slant outwardly by 5°-10°.
• To protect the piping and the cables from being damaged running through the wall, and from the rodents that may inhabit in the hollow wall, a pipe protecting ring shall be installed and sealed with putty.

Note: Usually, the wall hole is Ø60mm~Ø80mm. Avoid pre-buried power wire and hard wall when making the hole.

1. Depending on the position of the unit, the piping may be routed sideways from the left or the right ( Fig 1 ), or vertically from the back( Fig 2 )(depending on the pipe length of the indoor unit). In the case of sideway routing, cut off the outlet cutting stock of the opposite side.

1. Remove the fixed part to pull out the pipe of the indoor machine from the case. Screw the hexagon nut in the left of the joint to the end with your hand.
2. Connect the connecting pipe to the indoor unit: Aim at the pipe centre, tighten the Taper nut with fingers, and then tighten the Taper nut with a torque wrench, and the direction is shown in the diagram on the right. The torque used is shown in the following table.

Note: Carefully check if there is any damage of joints before installation. The joints shall not be reused, unless after re-flaring the pipe.

Wrap the Piping

1. Use the insulation sleeve to wrap the joint part the indoor unit and the connection pipe, and then use insulating material to pack and seal insulation pipe, to prevent the generation of condensate water on the joint part.
2. Connect the water outlet with drain pipes, and make the connection pipe, cables, and the drain hose straight.
3. Use plastic cable ties to wrap the connecting pipes, cables and drain hose. Run the pipe sloping downward.

1. Hang the indoor unit on the pegboard, and move the unit from left to right to ensure that the hook is properly positioned in the pegboard.
2. Push toward the lower left side and the upper right side of the unit toward the pegboard, until the hook is embedded in the slot and makes a "click" sound.

• If your air conditioner is provided with interconnection cord, the wiring of the indoor unit is connected in the factory, there is no need of connection.
• If the interconnection cord is not provided, a connection is needed in accordance with the

After installation, check:

1. the screws whether have been fixed effectively, and there is no risk of loosening.
2. Connector of display board whether put in the right place and do not touch the terminal board.
3. Control box cover whether cover tightly.

Dimension drawing of outdoor unit installation

1. Loosen the screws and remove E-parts cover from the unit.
2. Connect the cables respectively to the corresponding terminals of the terminal board of the outdoor unit (see the wiring diagram), and if there are signals connected to the plug, just conduct butt joint.
3. Ground wire: Remove the grounding screw out of the electric bracket, cover the grounding wire end onto the grounding screw and screw it into the grounding hole.
4. Fix the cable reliably with fasteners (Pressing board).
5. Put the E-parts cover back in its original place and fasten it with screws.

Vacuuming

★ Exclusive R32 refrigerant pump must be used in making R32 refrigerant vacuum.

Before working on the air conditioner, remove the cover of the stop valve (gas and liquid valves) and be sure to retighten it afterwards (to prevent the potential air leakage)

1. To prevent air leakage and spilling tighten all connecting nut of all flare tubes.
2. Connect the stop valve, charge hose, manifold valve, and vacuum pump.
3. Fully open the handle Lo of the manifold valve and apply vacuum for at least 15 minutes and check that the compound vacuum gauge reads -0.1MPa(-76cmHg).
4. After applying vacuum, fully open the stop valve with a hex wrench.
5. Check that both indoor and outdoor connections are free of air leakage.

When the unit is heating, the condensing water and defrosting water can be out reliably through the drain hose.

Installation:

★ Electrical Safety Check

1. If the supply voltage is as required.
2. If there is any faulty or miss connection in each of the power, signal and grounding wires.
3. If the grounding wire of the air conditioner is securely grounded.

★ Installation Safety Check

1. If the installation is secure.
2. If the water drain is smooth.
3. If the wiring and piping are correctly installed.
4. Check that no foreign matter or tools are left inside the unit.
5. Check the refrigerant pipeline is protected well.

★ Leak test of the refrigerant

Depending on the installation method, the following methods may be used to check for suspect leak, on areas such as the four connections of the outdoor unit and the cores of the cut-off valves and t-valves:

1. Bubble method: Apply of spray a uniform layer of soap water over the suspected leak spot and observe carefully for bubbles.
2. Instrument method: Checking for a leak by pointing the probe of the leak detector according to the instruction to the suspect points of a leak.

Note: Make sure that the ventilation is good before checking.

Test Operation preparation:

• Verify that all piping and connection cables are well connected.
• Confirm that the values at the gas side the liquid-side are fully open.
• Connect the power cord to an independent power socket.
• Install batteries in the remote control.

Note: Make sure that the ventilation is good before testing.

Test Operation method:

1. Turn on the power and push the ON/OFF switch button of the remote controller to start the air conditioner.
2. Select COOL, HEAT (not available on cool-only models), SWING and other operation modes with the remote controller and see if the operation is working correctly.

1. Special training additional to usual refrigerating equipment repair procedures is required when equipment with flammable refrigerants is affected. In many countries, this training is carried out by national training organisations that are accredited to teach the relevant national competency standards that may be set in legislation. The achieved competence should be documented by a certificate.
2. The maintenance and repair of the air conditioner must be conducted according to the method recommended by the manufacturer. If other professionals are needed to help maintain and repair the equipment, it should be conducted under the supervision of individuals who have the qualification to repair AC equipped with flammable refrigerant.

Safety inspection must be taken before maintaining equipment with R32 refrigerant to make sure the risk of fire is minimized. Check whether the place is well ventilated, whether anti-static and fire prevention equipment is perfect.

While maintaining the refrigeration system, observe the following precautions before operating the system.

1. General work area:
All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out. Work in confined spaces shall be avoided. The area around the workspace shall be sectioned off. Ensure that the conditions within the area have been made safe by control of flammable material.

2. Checking for presence of refrigerant:
The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of potentially toxic or flammable atmospheres. Ensure that the leak detection equipment being used is suitable for use with all applicable refrigerants, i.e.non-sparking, adequately sealed or intrinsically safe.

3. Presence of fire extinguisher:
If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire extinguishing equipment shall be available to hand. Have a dry powder or CO2 fire extinguisher adjacent to the charging area.

4. No ignition sources:
No person carrying out work in relation to a refrigeration system which involves exposing any pipework shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal, during which refrigerant can possibly be released to the surrounding space. Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable hazards or ignition risks.
‘No Smoking’ signs shall be displayed.

5. Ventilated Area(open the door and window):
Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work. A degree of ventilation shall continue during the period that the work is carried out. The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.

6. Checks to the refrigeration equipment:
Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times the manufacturer’s maintenance and service guidelines shall be followed. If in doubt, consult the manufacturer’s technical department for assistance. The following checks shall be applied to installations using flammable refrigerants:
• The charge size is in accordance with the room size within which the refrigerant containing parts are installed.
• The ventilation machinery and outlets are operating adequately and are not obstructed.
• If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of refrigerant.
• Refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any substance which may corrode refrigerant containing components unless the components are constructed of materials which are inherently resistant to being corroded or are suitably protected against being so corroded.

7. Checks to electrical devices:
Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures. If a fault exists that could compromise the safety, then no electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If the fault cannot be corrected immediately but it is necessary to continue operation, an adequate temporary solution shall be used. This shall be reported to the owner of the equipment so all parties are advised.
Initial safety checks shall include:
• That capacitors are discharged: this shall be done in a safe manner to avoid the possibility of sparking.
• That no live electrical components and wiring are exposed while charging, recovering or purging the system.
• Keep continuity of earthing.

Note: Check the leakage of the refrigerant in an environment where there is no potential ignition source. No halogen probe (or any other detector that uses an open flame) should be used.
Leak detection method:
For systems with refrigerant R32, electronic leak detection instrument is available to detect and leak detection should not be conducted in an environment with refrigerant. Make sure the leak detector will not become a potential source of ignition and is applicable to the measured refrigerant. Leak detector shall be set for the minimum ignitable fuel concentration (percentage) of the refrigerant. Calibrate and adjust to proper gas concentration (no more than 25%) with the used refrigerant.
The fluid used in leak detection is applicable to most refrigerants. But do not use chloride solvents to prevent the reaction between chlorine and refrigerants and the corrosion of the copper pipeline.
If you suspect a leak, then remove all the fire from the scene or put out the fire.
If the location of the leak needs to be welded, then all refrigerants need to be recovered or isolate all refrigerants away from the leak site (using cut-off valve). Before and during the welding, use OFN to purify the entire system.

Removal and Vacuum Pumping

Scrap:
Before this procedure, the technical personnel shall be thoroughly familiar with the equipment and all its features, and make a recommended practice for refrigerant safe recovery. For recycling the refrigerant, shall analyze the refrigerant and oil samples before the operation. Ensure the required power before the test.
1. Be familiar with the equipment and operation.
2. Disconnect the power supply.
3. Before carrying out this process, you have to make sure:
• If necessary, mechanical equipment operation should facilitate the operation of the refrigerant tank.
• All personal protective equipment is effective and can be used correctly.
• The whole recovery process should be carried out under the guidance of qualified personnel.
• The recovering of equipment and storage tank should comply with the relevant national standards.
4. If possible, the refrigerating system should be vacuumized.
5. If the vacuum state can't be reached, you should extract the refrigerant in each part of the system from many places.
6. Before the start of the recovery, you should ensure that the capacity of the storage tank is sufficient.
7. Start and operate the recovery equipment according to the manufacturer's instructions.
8. Don't fill the tank to its full capacity (the liquid injection volume does not exceed 80% of the tank volume).
9. Even the duration is short, it must not exceed the maximum working pressure of the tank.
10. After the completion of the tank filling and the end of the operation process, you should make sure that the tanks and equipment should be removed quickly and all closing valves in the equipment are closed.
11. The recovered refrigerants are not allowed to be injected into another system before being purified and tested.
Note: The identification should be made after the appliance is scrapped and refrigerants are evacuated. The identification should contain the date and endorsement. Make sure the identification on the appliance can reflect the flammable refrigerants contained in this appliance.

Recovery:
1. The clearance of refrigerants in the system is required when repairing or scrapping the appliance. It is recommended to completely remove the refrigerant.
2. Only a special refrigerant tank can be used when loading the refrigerant into the storage tank. Make sure the capacity of the tank is appropriate to the refrigerant injection quantity in the entire system. All tanks intended to be used for the recovery of refrigerants should have a refrigerant identification (i.e. refrigerant recovery tank). Storage tanks should be equipped with pressure relief valves and globe valves and they should be in good condition. If possible, empty tanks should be evacuated and maintained at room temperature before use.
3. The recovery equipment should be kept in a good working condition and equipped with equipment operating instructions for easy access. The equipment should be suitable for the recovery of R32 refrigerants. Besides, there should be a qualified weighing apparatus which can be normally used. The hose should be linked with detachable connection joint of zero leakage rate and be kept in a good condition.
Before using the recovery equipment, check if it is in good condition and if it gets perfect maintenance. Check if II electrical components are sealed to prevent the leakage of the refrigerant and the fire caused by it. If you have any question, please consult the manufacturer.
4. The recovered refrigerant shall be loaded in the appropriate storage tanks, attached with a transporting instruction, and returned to the refrigerant manufacturer. Don't mix refrigerant in recovery equipment, especially a storage tank.
5. The space loading R32 refrigeration can't be enclosed in the process of transportation. Take anti-electrostatic measures if necessary in transportation. In the process of transport, loading and unloading, necessary protective measures must be taken to protect the air conditioner to ensure that the air conditioner is not damaged.
6. When removing the compressor or clearing the compressor oil, make sure the compressor is pumped to an appropriate level to ensure that there is no residual R32 refrigerants in the lubricating oil. The vacuum pumping should be carried out before the compressor is returned to the supplier. Ensure safety when discharging oil from the system.