SystemAir VRF series Owner's Manual

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SYSVRF Indoor unit
VRF Indoor units
OWNER MANUAL
GB
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1. IMPORTANT SAFETY INFORMATION
To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring of instructions may cause harm or damage.
Ask your dealer for installation of the air conditioner.
Incomplete installation performed by yourself may result in a water leakage, electric shock or fire.
Ask your dealer for improvement, repair, and maintenance.
Incomplete improvement, repair, and maintenance may result in a water leakage, electric shock or fire.
In order to avoid electric shock, fire or injury, or if you detect any abnormality such as smell of fire, turn off the power supply and call your dealer for instructions.
Never let the indoor unit or the remote controller get wet.
It may cause an electric shock or a fire.
Never press the button of the remote controller with a hard, pointed object.
The remote controller may be damaged.
Never replace a fuse with that of wrong rated current or other wires when a fuse blows out.
Use of wire or copper wire may cause the unit to break down or cause a fire.
Never use a flammable spray such as hair spray, lacquer or paint near the unit.
It may cause a fire.
Never touch the air outlet or the horizontal blades while the swing flap is in operation.
Fingers may become caught or the unit may break down.
Never put any objects into the air inlet or outlet. Objects touching the fan at high speed can be dangerous.
Never inspect or service the unit by yourself. Ask a qualified service person to perform this work.
Do not dispose this product as unsorted municipal waste. Collection of such waste separately for special treatment is necessary.
Do not dispose of electrical appliances as unsorted municipal waste, use separate collection facilities.
Contact you local government for information regarding the connection systems available.
If electrical appliances are disposed of in landfills or dumps, hazardous substances can leak into the ground water and get into the food chain, damaging your health and well-being.
To prevent refrigerant leak, contact your dealer.
When the system is installed and runs in a small room, it is required to keep the concentration of the refrigerant, if by any chance coming out, below the limit. Otherwise, oxygen in the room may be affected, resulting in a serious accident.
If the refrigerant leaks in the room, contact with a fire of a burner, a heater or a cooker may result in a harmful gas.
Turn off any combustible heating devices, ventilate the room, and contact the dealer where you purchased the unit.
Do not use the air conditioner until a service person confirms that the portion where the refrigerant leaks is repaired.
The cooling&heating indoor unit is applicable for the cooling&heating and the cooling only outdoor unit;the heating capacity of the indoor unit will be effective only when the indoor unit connect to the cooling&heating outdoor unit.
Do not use the air conditioner for other purposes.
In order to avoid any quality deterioration, do not use the unit for cooling precision instruments, food, plants, animals or works of art.
Before cleaning, be sure to stop the operation, turn the breaker off or pull out the supply cord.
Otherwise, an electric shock and injury may result.
W ARNING
The safety precautions listed are divided into two categories. In either case, important safety information is listed which must be read.
CAUTION
Failure to observe a caution may result in injury or damage
to the equipment.
Failure to observe a warning may result in death. The appliance shall be installed in accordance with national wiring regulations.
CONTENTS PAGE
IMPORTANT SAFETY INFORMATION...........................................................1
PARTS NAMES...............................................................................................2
AIR CONDITIONER OPERATIONS AND PERFORMANCE..........................5
ADJUSTING AIR FLOW DIRECTION.............................................................6
MAINTENANCE.............................................................................................10
FOLLOWING SYMPTOMS ARE NOT AIR CONDITIONER TROUBLES....13
TROUBLESHOOTING...................................................................................14
WARNING
CAUTION
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In order to avoid electric shock or fire, make sure that an earth leak detector is installed.
Be sure the air conditioner is grounded.
In order to avoid electric shock, make sure that the unit is grounded and that the earth wire is not connected to gas or water pipe, lightning conductor or telephone earth wire.
In order to avoid injury, do not remove the fan guard of the outdoor unit.
Do not operate the air conditioner if wet.
An electric shock may occur.
Do not touch the heat exchanger fins.
These fins are sharp and could result in cutting injuries.
Do not place items which might be damaged by moisture under the indoor unit.
Condensation may form if the humidity is above 80%, the drain outlet is blocked or the filter is polluted.
After a long use, check the unit stand and fitting for damage.
If damaged, the unit may fall and result in injury.
To avoid oxygen deficiency, ventilate the room sufficiently if equipment with burner is used together with the air conditioner.
Arrange the drain hose to ensure smooth drainage.
Incomplete drainage may cause water damage to the building, furniture etc.
Never touch the internal parts of the controller. Do not remove the front panel. Some parts inside are dangerous to touch, and machine breakdown may occur.
Never expose little children, plants or animals directly to the air flow.
Adverse influence to little children, animals and plants may result.
Do not allow children to play on the outdoor unit or avoid placing any object on it.
Falling may result in injury.
Do not operate the air conditioner when using a room fumigation - type insecticide.
Failure to observe could cause the chemicals to become deposited in the unit, which could endanger the health of those who are hypersensitive to chemicals.
Do not place appliances which produce open fire in places exposed to the air flow from the unit or under the indoor unit.
It may cause incomplete combustion or deformation of the unit due to the heat.
Do not install the air conditioner at any place where flammable gas may leak out.
If the gas leaks out and stays around the air conditioner, a fire may break out.
The appliance is not intended for use by young children or infirm persons without supervision.
2. PARTS NAMES
! Four-way cassette type
Air Out Louver (Adjustable)
Lock buckle (For closing the Air Grille)
Air Intake
(Intake air from here) Air Filter (Filter the dust in the intake air)
Grounding Screw (In the control box)
Two-direction or Three-direction Air Outlet For the detailed information please consult your local dealer.
! Ceiling-floor type
Air Outlet Horizontal Louver
Air Intake (Intake room air)
Air Filter (Filter the dust in the air)
Air Filter (Filter the dust in the intake air)
Air Out Horizontal Louver (Adjust air-out direction)
Grounding Screw (In the control box)
Air Intake
! One-way cassette type
Fig.2-1
Fig.2-2
Fig.2-3
NOTE
All the pictures in this manual are for explanation purpose only. They may be slightly different from the air conditioner you purchased(depend on model). The actual shape shall prevail.
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Small one-way cassette type
Air Filter (Filter the dust in the air)
Air Intake (Intake room air)
Grounding Screw (In the control box)
Air Outlet Horizontal Louver (Adjust the air-out directions. )
Wall-mounted type
Grounding Screw (In the control box)
Air Filter (Filter the dust in the air)
Air Intake (Intake room air)
Lock Buckle (For closing the air intake grille)
Air Outlet (Connect the duct)
Duct/ceiling type
Air Outlet
(Outlet room air)
Air Intake
(Intake room air)
Electric control box
Heat Exchanger
(Exchange cool air into warm air)
High static pressure duct type
One refrigerant system
Air Filter (Filter the dust in the intake air)
Grounding Screw (In the control box)
Air Intake
Air Out, Air Out Louver (Adjust the air-Aout direction)
Fig.2-4
Fig.2-7
Fig.2-8
Fig.2-9
Air return grille: Induced air, decoration Dust filter: Filter the dust in the induced air Grille bolt-lock: Lock the air return grille Air deflector: Control the blow out
direction of the air
Display panel:Display the status information receive the remote controller signal
Fig.2-5
Fig.2-6
Wire cable inlet: Intake of the power and communication wires
Electronic control box: The control component of the air-conditioner
Air return port: Induced the indoor air
Water plug for maintenance: Water level sensor for water drainage and checking under maintenance
Air outlet: Blow out the cool and heat air flow
Small one-way cassette type
(The second generation 18-36 model)
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Air Outlet
(Outlet room air)
Air Intake
(Intake room air)
Electric control box B Electric control box A
Two refrigerant system
Air Outlet (Outlet room air)
Heat Exchanger (Exchange cool air into warm air)
Air Intake (Intake room air)
! (Thin) Duct/ceiling type
Indoor unit
Connecting pipe
Hi-pressure pipe
Inlet pipe
Throttle part
Low-pressure pipe
Outlet pipe
Electric control box
Fig.2-10
Fig.2-11
Fig.2-12
Fig.2-14
4
! Low static pressure type
Air Outlet (Connect the duct)
Grounding Screw (In the control box)
Control Box
Air Intake (Intake room air)
Air Filter (Filter the dust in the air)
! Console type
Air flow louver (at air outlet)
Air inlet (with air filter in it)
Installation part
Display panel
Drain pipe
Air flow louver (at air outlet)
Fig.2-15
Fig.2-13
Air Outlet
(Outlet room air)
Air Intake
(Intake room air)
Heat Exchanger
(Exchange cool air into warm air)
Electric control box
! Middle static pressure duct type
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Floor standing type
● Version I
Vertical unit with casing,with air intake from front and air outlet on top, for installation on a wall or on feet on the floor.
● Version II
Vertical unit with casing,with air intake from below and air outlet on top, for installation on a wall or on feet on the floor.
● Version III
Vertical unit for flush mounting,with air intake from below and
air delivery at the top, for installation on a wall.
Air out, air out louver (Adjust the air-out direction)
Air Intake (Intake room air)
Air intake
(Intake room air)
Air out, air out louver (Adjust the air-out direction)
Feet (Lift up the air conditioner)
Air filter (Filter the dust in the air)
Electric control box
Air outlet (Outlet room air)
Air intake (Intake room air here)
Air filter (Filter the dust in the air)
Use the system in the following temperature for safe and effective operation. The Max operation temperature for the air conditioner.(Cooling/Heating)
3. AIR CONDITIONER OPERATIONS AND PERFORMANCE
Cooling operation
Heating operating
(cooling only type without)
Mode
Temperature
Indoor temperature
If air conditioner is used outside the above conditions, it may cause the unit to function abnormally.
The phenomenon is normal that the surface of air conditioning may condense water when the relative humidity is very high in the room, please close the door and window.
Optimum performance will be achieved within these operating temperature range.
Protection device will be activated and the unit stops when the above conditions can not be achieved.
1
2
3
4
NOTE
Table 3-1
Indoor Humidity Below 80% 80% humidity or above will cause the machine surface condensing dew.
17°C ~ 32°C
≤27°C
Fig.2-16
Fig.2-17
owner’s manual
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Fig.2-18
Fig.2-19
Two-way cassette type
Air Out Louver
(Adjustable)
Air Filter
(Filter the dust in the intake air)
Air Intake
(Intake room air)
Inlet grille
Electric control box
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Heating operation
Adjust the louver down.
When using the panel with auto.louver, press SWING button , the auto, louver will swing automatically and the best cooling (heating) effects will be achieved.
Adjust the air direction up and down
Auto-swing
■ One-way cassette type
Press SWING button, the louver will swing up and down.
Maximum air circulation area
Fig.4-3
4. ADJUSTING AIR FLOW DIRECTION.
Because cold air flow down and hot air flow up,to improve the the cooling and heating effect, please adjust air flow louver direction, in result the temperature of the room will be natural and equal and you will fell more comfortable.
NOTE
The heating operation with horizontal air outlet will increase the difference of the room temperature.
The louver direction : Choose horizontal outlet mode when cooling operation When the cooling operation,the air flow down will cause condensing dew on the air outlet and louver surface.
1
2
Cooling operation
Adjust the louver horizontally .
Four-way cassette type
Fig.4-1
Fig.4-2
To maintain the comfortable temperature.
Adjust the air-out direction by using the air-out louver.
Please note the following correct operation for saving energy and achieving the quick and comfortable cooling/heating effects.
The blocked air filter will reduce cooling/heating effects.
Close the door/window
Do not let the heat/cool air leak from the door/widow.
close the door/window
check
regularly
Do not overcool or overheat.
Do not expose yourself to the cool airflow for a long time. To be overly chilled may harm your health. Especially for the handicapped, children or old.
Do not
overcool
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When heating
Cooling operation
Adjust the louver horizontally .
When cooling
Adjust the louver horizontally.
Adjust the louver down(vertically).
When heating
Adjust the louver down(vertically).
Adjust the air direction left and right
Adjust left and right
Adjust the air flow up and down
Adjust the blade inside the air outlet louver to the desired direction.
When the air flow sideways and the air flow parts must be used (sold separately), please refer to the following figures to adjust the air flow direction.
The louver is horizontal
NOTE
1 Please adjust the horizontal louver down when the air flow is down.
Horizontal louver
Less than 40°
2 The slant angle of horizontal louver must be
Less than 40°
otherwise condensation drops may occur.
vertical louver
vertical louver
When adjusting air flow left /right, refer to the following figures to turn the vertical louver to certain angles. Do not adjust the blade angle too much, otherwise condensation drops may form on blade.
NOTE
The following is how to adjust the air flow direction when the air outlet parts (sold separately) is used with the indoor unit.
To effectively cool the bottom of the room please set the louver sideways.
Duct-ceiling type
When cooling
When heating
To effectively heat the bottom of the room please set the louver downwards.
Fig.4-4
Fig.4-5
Fig.4-6
Fig.4-7
Fig.4-8
Fig.4-10
Fig.4-9
(Fig.4-9)
(Fig.4-10)
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When heating
Auto-swing
Adjust the louver downwards (vertically).
Manual swing
Adjust the Air Flow Direction Up and Down
Press SWING button, the louver will swing up and down automatically.
Adjust the louver to achieve the better cooling/ heating effects when cooling/heating.
When cooling
Adjust the louver horizontally.
CAUTION
Condensation drops may form on the surface of the unit or horizontal
louver when cooling while the air-out direction is vertically down.
Indoor temperature will not be even on the heating mode when the air-out direction is horizontal.
Do not move the horizontal louver with hands, or malfunction may occur. Adjust it with the swing button on the wire controller.
1
2
3
Ceiling-floor type
Auto-swing
Press SWING button, the louver will swing up and down (left and right) automatically.
Manual swing
Adjust the louver to achieve the better cooling/ heating effects when cooling/heating.
When cooling
Adjust the louver horizontally.
When heating
Adjust the louver downwards (vertically).
Fig.4-11
Fig.4-12
Fig.4-13
Fig.4-14
Fig.4-15
Fig.4-16
Wall-Mounted type
Console type
Auto-swing
Press SWING button, the louver will swing up and down automatically.
Manual swing
Press Air Direction button,the louver can be fixed at a desired angle.The louber swing (upward or downward ) to a certain angle for each press.
Fig.4-17
Adjust the air direction up and down
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Adjust the louver to achieve better cooling/heating effects when cooling/heating.
Digital scroll floor standing type
Fig.4-21
! When heating
Adjust the louver downwards (vertically).(Refer to Fig.4-19)
! When cooling
Adjust the louver horizontally.(Refer to Fig.4-18)
Fig.4-18
Fig.4-19
Do not try to adjust the horizontal louver by hand. When adjusting by hand, the mechanism may not operate properly or condensation may drip from air outlets.
CAUTION
Adjust the air direction left and right
Hold the knob and move the louver.You will find a knob on the left-side and the right-side blades.
Fig.4-20
Before opening the front panel,be sure to stop the operation and turn the breaker OFF. Do not touch the metal parts on the inside of the indoor unit, as it may result in injury.
Open the front panel. How to open the front panel:(Refer to Fig.5-4).
CAUTION
Air flow selection
Table 4-1
Make air flow selection according to what suits you. (Pleas refor to Fig. 7-2 about the position of)
When setting the air flow selection switch to .
Air conditioner automatically decides the appropriate blowing pattern depending on the operating mode/ situation.
During Dry mode,so that cold air does not come into direct contact with people,air is blown upper air outlet.
Regardless of the operating mode or situation,air blows from the upper air outlet.
Use this switch when you do not want air coming out of the lower air outlet.(While sleeping etc.)
Operating
mode
Situation
Blowing
pattern
COOL mode HEAT mode
When the room has become fully cool,or when one hour has passed since turning on the air condition­er.
So that air does not come into dir­ect contact with people,air is blo­wn upper air ou­tlet,room tempe­rature is equaliz­ed.
At start of operation or other times when the room is not fully cooled.
At times other than below.( Normal time.)
Air is blown from the
upper and lower air
outlets for high spe-
ed cooling during
COOL mode,and for
filling the room with
warm air during
HEAT mode.
At start or when air temoerature is low.
So that air does not come into direct contact with people.Air is blown upper air outlet.
When setting the air outlet selection switch to .
For switching the Auto/Manual mode of the lower air outlet, one should unplug and restart the unit for mode renewing.
CAUTION
Two-way cassette type
! Auto-swing
Press SWING button, the louver will swing up and down automatically.
Fig.4-22
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Method for cleaning the air filter
5. MAINTENANCE
Before you clean the air conditioner, be sure the power supply is off.
Check if the wiring is not damaged or disconnected.
Use a dry cloth to wipe the indoor unit and remote controller.
A wet cloth may be used to clean the indoor unit if it is very dirty.
Never use a damp cloth on the remote controller.
Do not use a chemically-treted duster for wiping or leave such material on the unit for long. it may damage or fade the surface of the unit.
Do not use benzine, thinner, polishing powder, or similar solvents for cleaning. These may cause the plastic surface to crack or deform.
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2
3
4
5
6
7
CAUTION
CAUTION
The air filter can prevent the dust or other parcticles from going
inside. In case of blockage of the filter, the working effeciency of the air conditioner may greatly decrease, therefore, the filter must be cleaned twice a month during prolonged use.
If the air conditioner is positioned in a dusty place, the cleaning
frequency of the air filter must be increased.
If the accumulated dust is too heavy to be cleaned, please
replace the filter with a new one(the replaceable air filter is an optional fitting).
1. Take out the inlet grille
For Four- Way Cassette Type
Push the grille switches towards the middle simultaneously as indicated in Sketch Fig.5-1 . Then pull down the inlet grille. Take out the inlet grille (together with the air filter shown in
Sketch Fig.5-2). Pull the inlet grille down at 45° and lift it up to take out the grille.
Fig.5-2
The control box cables, which are originally connected with the main body electrical terminators must be pulled off before doing as indicated above.
Fig.5-1
! When cooling
Adjust the louver horizontally.
! Manual swing
Adjust the louver to achieve the better cooling/ heating effects when cooling/heating.
Fig.4-23
Fig.4-24
! When heating
Adjust the louver downwards (vertically).
Do not try to adjust the louver by hand. When adjusting by hand, the mechanism may not operate properly or condensation may drip from air outlets.
CAUTION
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For Duct/Celling Type
Push the grille switches to the arrow directions, then open the inlet grille downwards. Turn back the air filter fixing block, then take out the inlet grille.
For One-Way Cassette Type
Remove the inlet grille , hold the air-in buckle with two hands and open the grille downwards, pull it towards inside part and push the filter buckle to remove the grille.
Air filter
Fig.5-3
! For digital scroll floor standing type
The filter is housed in the lower part of the unit in versions II and III which take in air from below or from the rear,To remove the filter in versions II and III proceed as followed.
While it is housed in the front cowl in version I,which take in air from the front. To remove the filter in version I, proceed as followed.
Fig.5-9
Fig.5-10
" Take off the inlet grille from the panel.
Air Outlet
Selection Switch
special function filter
For Console Type
Push the grille switches to the arrow directions, then open the inlet grille downwards. Press the claws on the right and left of the air filter down slightly, then pull upward.
Fig.5-6
Hold the tabs of the frame,and remove the claws in 4 places. (The special function filter can be renewed by washing it with water once every 6 months.We recommend replacing it once every 3 years.)
Fig.5-7
Fig.5-8
" Two-way cassette type
1) Upright row (non-directional) one side of the inlet grille, and
putdown the other side, and then slide follow the arrow’s
direction refers to Fig.5-9
2) Loosen the hanger of the putdown side refers to Fig.5-10
3) Open the inlet grille (about 45°), and remove the other side,
refers to Fig.5-11
For One-Way Cassette Type
(The second generation 18-36 model)
Fig.5-4
Fig.5-5
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Do not dry out the air filter under direct sunshine or with fire.
For the one-way cassette type , the air filter should be installed before the unit body installation.
1
2
2. Dismantle the air filter.
3. Clean the air filter
4. Re-install the air filter.
5. Install and close the inlet grille in the reverse orders of step 1 and 2 and connect the control box cables to the corre sponding terminators of the main body.
CAUTION
The air filter can prevent the dust or other particulate from going inside .In case of blockage of the filter , the working efficiency of the air conditioner may greatly decrease .
Therefore , the filter must be cleaned twice a month during prolonged use.
Clean the air filter with vacuum cleaner or water.
a.The inlet side should face up when using vacuum cleaner. (Refer to
Fig.5-13) b.The inlet side should face down when using clean water. (Refer to Fig.5-14)
If the dust accumulation is too heavy, please use soft bursh and natural detergent to clean it and dry in the cool place.
Fig.5-15
Fig.5-16
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Inlet grille
According to the figure shown in the position and direction of arrow, press the filter and take it down. In the same way,take down the filter on the other side,and put it back after cleaning.
!
Air Out Louver
(Adjustable)
Air Filter
(Filter the dust in the intake air)
Air Intake
(Intake room air here)
Inlet grille
Fig.5-11
Fig.5-12
Fig.5-13
Fig.5-14
When the power switch is connected, some energy will be consumed, even if the unit is not in operation. So please disconnect the power to save the energy.
A degree of dirt will be accumulated due to certain performance after several seasons of operation. So special maintenance is advised.
Take out of the batteries from the remove controller.
NOTE
Maintenance before a long stop period
(eg. at the end of the season)
Let the indoor units run in fan only operation for about half a day in order to dry the interior of the units.
Clean air filters and casings of indoor units.
Refer to “Cleaning the air filter" for details on how to proceed and make sure to install cleaned air filters back in the same position.
Turn off the unit with the “ON/OFF” button on the remove controlller,then disconnect the power.
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6. FOLLOWING SYMPTOMS ARE NOT AIR CONDITIONER TROUBLES
Symptom 1: The system does not operate
Symptom 2: Change into the fan mode during cooling mode
Symptom 3: White mist comes out of a unit
Symptom 4: Noise of air conditionerscooling
The air conditioner does not start immediately after the ON/OFF button on the romote controller is pressed. If the operation lamp lights, the system is in normal condition.To prevent overloading of the compressor motor, the air conditioner starts 3 minutes after it is turned ON.
If the operation lamp and the "
PRE-DEF indicator(cooling and
heating type) or fan only indicator(cooling only type)"
light, it means you choose the heating model, When just starting, if the compressor has not started, the indoor unit appears "anti cold wind" protection because of too low outlet temperature.
In order to prevent the indoor evaporator frosting, the system will change into fan mode automatically, restore to the cooling mode will be done automatically after.
Symptom 3.1: Indoor unit
Symptom 3.2: Indoor unit, outdoor unit
Symptom 4.1: Indoor unit
When humidity is high during cooling operation If the interior of an indoor unit is extremely contaminated, the temperature distribution inside a room becomes uneven. It is necessary to clean the interior of the indoor unit. Ask your dealer for details on cleaning the unit. This operation requires a qualified service erson
When the system is changed over to heating operation after defrost operation Moisture generated by defrost becomes steam and is exhausted.
Symptom 4.2: Indoor unit, outdoor unit
A continuous low hissing sound is heard when the system is in operation. This is the sound of refrigerant gas flowing through both indoor and outdoor units.
A hissing sound which is heard at the start or immediately after stopping operation or defrost operation. This is the noise of refrigerant caused by flow stop or flow change.
.
A continuous low hissing sound is heard when the system is in cooling operation or at a stop. When the drain pump (optional accessories) is in operation,this noise is heard.
A squeaking sound is heard when the system stops after heating operation. Expansion and contraction of plastic parts caused by temperature change make this noise.
Symptom 4.3: Outdoor unit
When the tone of operating noise changes. This noise is caused by the change of frequency.
Symptom 5: Dust comes out of the unit
Symptom 6: The units can give off odours
When the unit is used for the first time in a long time. This is because dust has got into the unit.
The unit can absorb the smell of rooms, furniture, cigarettes, etc., and then emit it again.
Symptom 7: The outdoor unit fan does not spin.
During operation. The speed of the fan is controlled in order to optimize unit operation.
When the room temperature drops to the set temperature, the compressor turns off and the indoor unit changes to fan mode; when the temperature rises up, the compressor starts again. It is same in the heating mode.
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13
Maintenance after a long stop period
(eg. at the beginning of the season)
Check and remove everything that might be blocking inlet and outlet vents of indoor units and outdoor units.
Clean air filters and casings of indoor units. Refer to "Cleaning the air filter" for details on how to proceed and make sure to install cleaned air filters back in the same position.
Turn on the power at least 12 hours before operating the unit in order to ensure smoother operation. As soon as he power is turned on, the remote controller displays appear.
Digital scroll central air conditioning auxiliary heating equipment
In winter, due to the difference of the area and building construction, please purchase the indoor unit with auxillary heating to enlarge the capacity.
When turning to the heat mode the air conditioner with auxiliary heating will run at the set term.
It’s not advised to auxiliary heating equipments on site for 4-way cassttte type and duct/celling type(with auxiliary heating).
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7. TROUBLE SHOOTING
7.1 Troubles and causes of air conditioner
Solution
Clean the heat exchanger.
Clean the air filter. Eliminate all dirt. Close doors and windows. Use curtains in order to shelter from sunshine. Reduce heat source. AC cooling capacity reduces (normal). Check leakage and rightly recharge refrigerant.
Symptoms
Causes
Unit does not start
Air flows normally but does not cool
Units start or stop frequently
Low cooling effect
Low heating effect
Power failure. Power switch is off. Fuse of power switch may have burned. Batteries of remote controller exhausted or other problem of controller.
Temperature is not set correctly. Be in 3 minutes protection of compressor.
Refrigerant is too little or too much.
Air or no concreting gas in the refrigerating circuit. Compressor is malfunction. Voltage is too high or too low. System circuit is blocked.
Outdoor unit and indoor unit heat exchanger is dirty. The air filter is dirty. Inlet/outlet of indoor/outdoor units is blocked. Doors and windows are open Direct sunlight.
Too much heat resource. Outdoor temp. is too high. Leakage of refrigerant or lack of refrigerant.
Wait for the comeback of power. Switch on the power. Replace the fuse. Replace the batteries or check the controller.
Set the temperature properly. Wait.
Check leakage, and rightly recharge refrigerant. Vacuum and recharge refrigerant.
Maintenance or change compressor. Install manostat. Find reasons and solution.
Use heating device. Close doors and windows.
Check leakage and rightly recharge refrigerant.
Outdoor temperature is lower than 7°C. Doors and windows not completely closed. Leakage of refrigerant or lack of refrigerant.
Table 7-1
If one of the following malfunctions occur, stop operation, shut off the power, and contact with your dealer.
Remote controller receives malfunction or the button does not work well.
A safety device such as a fuse, a breaker frequently actuates.
Obstacles and water enter the unit.
Water leaks from indoor unit.
Other malfunctions.
If the system does not properly operate except the above mentioned cases or the above mentioned malfunctions is evident, investigate the system according to the following procedures. (See in Table 7-1)
Page 16
Table 7-2
Symptoms
Causes
The fan speed can not be changed.
Check whether the MODE indicated on the display is "AUTO"
Check whether the MODE indicated on the display is "DRY"
When the automatic mode is selected, the air conditioner will automatically change the fan
speed.
When dry operation is selected, the air conditioner automatically change the fan speed. The fan speed can be selected during "COOL" , "FAN ONLY",
and
"HEAT".
The remote controller signal is not transmitted even when the ON/OFF button is pushed.
Check whether the batteries in the remote controller are exhausted.
The power supply is off.
No receiving tone sounds from the indoor unit even when the ON/OFF button is pressed.
Check whether the signal transmitter of the remote controller is properly directed
to the infrared signal receiver of the indoor unit when the ON/OFF button is pressed.
Directly transmit the signal transmitter of the remote controller to the infrared signal receiver of the indoor unit, and then repeatly push the ON/OFF button twice.
The indication on the display disappears after a lapse of time.
Check whether the timer operation has come to an end when the TIMER OFF
is indicated on the display.
The air conditioner operation will stop up to the set time.
The TIMER ON indicator goes off after a lapse of certain time.
Check whether the timer operation is started when the
TIMER ON is indicated
on the display.
Up to the set time, the air conditioner will automatically start and the appropriate indicator will go off.
The TEMP. indicator does not come on.
Check whether the MODE indicated on the display is FAN ONLY
The temperature cannot be set during FAN mode.
Solution
7.2 Troubles and causes of remote controller
7.3 Fault information and code
Before asking for serving or repairing, check the following points.(See in Table 7-2)
Fault information is only applicable for the indoor units with panel,and only the panel with digit displays will show the fault code,otherwise just four LED lamps. The fault indication of LED and digit displays see the following form.
owner’s manual
15
Page 17
16
owner’s manual
Table.7-3
NO. Type Contents
LED flash
The Fault Indication Of LED The Fault Indication Of Digit Displays
Remarks
The evaporator sensor check point is abnomal or room temp. sensor is abnormal.
Indoor/outdoor unit communication is abnormal
Water level switch is abnormal
Mode conflict
The run LED flashes fast
The timer LED flashes fast
The alarm LED flashes fast
The defrost LED flashes fast
After the malfunctions disappear, it restores automatically.
After the malfunctions disappear, it restores automatically.
After the malfunctions disappear, it restores automatically.
When the indoor unit turns to heating mode or is turned off, the alarm will disappear.
1
2
3
4
5
Malfun­ction
Malfun­ction
Malfun­ction
Malfun­ction
Alarm
After the malfunctions disappear, it restores automatically.
Outdoor unit is abnormal
The alarm LED flashes slowly
6
7
4 LED flash together
8
M_Home mismatching
EEPROM error
Defrost LED flash slowly
No address when first time power on
Timer LED and run LED flash together
Malfun­ction
Alarm
Alarm
After the malfunctions disappear, it restores automatically.
After the malfunctions disappear, it restores automatically.
When the indoor unit is replaced with a correct one or is turned off, the alarm will disappear
Table.7-4
NO. Type Contents
Display content Remarks
Room temp. sensor is abnormal.
Indoor/outdoor unit communication is abnormal
Water level switch is abnormal
Mode conflict
E2
E1
EE
E0
After the malfunctions disappear, it restores automatically.
After the malfunctions disappear, it restores automatically.
After the malfunctions disappear, it restores automatically.
When the indoor unit turns to heating mode or is turned off, the alarm will disappear.
1
2
3
4
5
Malfun­ction
Malfun­ction
Malfun­ction
Malfun­ction
Alarm
After the malfunctions disappear, it restores automatically.
Outdoor unit is abnormal
Ed
6
7
H0
8
M_Home mismatching
EEPROM error
E7
No address when first time power on
FE
Malfun­ction
Alarm
Alarm
After the malfunctions disappear, it restores automatically.
After the malfunctions disappear, it restores automatically.
When the indoor unit is replaced with a correct one or is turned off, the alarm will disappear
The evaporator temp. sensor is abnormal.
E3
After the malfunctions disappear, it restores automatically.
9
Malfun­ction
The evaporator outlet temp. sensor is abnormal.
E4
After the malfunctions disappear, it restores automatically.
10
Malfun­ction
Page 18
SYSVRF indoor units_OM
EN - April 2014
202000191029(WP-MDV03U-011PW)
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