Sharp air conditioner troubleshooting

Sharp air conditioners belong to the A class of energy efficiency. They are characterized by an unusual design, high efficiency and reliability of functioning. Their troubleshooting system helps to effectively determine errors and a complexity of repairs. One can look through its table below.

Sharp GB-X18JR air conditioner troubleshooting

FailurePossible Reasons
The unit cannot be started.1. The power supply is not connected.
2. Electrical leakage of air-conditioning unit causes tripping of leakage switch.
3. The operating buttons are locked.
4. The control loop has failure.
The unit operates for a while and then stops.1. There is obstacle in front of the condenser.
2. The control loop is abnormal.
3. Cooling operation is selected when the outdoor ambient temperature is above 43°C.
Poor cooling effect.1. The air filter is dirty or blocked.
2. There is heat source or too many people inside the room.
3. The door or window is open.
4. There is obstacle at the air intake or outlet.
5. The set temperature is too high thus cooling is hindered.
6. There is refrigerant leakage.
7. The performance of room temperature sensor becomes worse.
Poor heating effect1. The air filter is dirty or blocked.
2. The door or window is not firmly closed.
3. The set room temperature is too low thus heating is hindered.
4. There is refrigerant leakage.
5. The outdoor ambient temperature is lower than -5°C.
6. Control line is abnormal.

Sharp GX-X18JR air conditioner troubleshooting

SymptomCauseCorrective measures
The unit does not operate at allPhase reverse or fuse brokenChange phase or replace fuse
Power offIt will restart when power is on
Loose plugPut the plug into place
Batteries of remote controller fallReplace batteries
Out of the remote controlling rangeKeep distance in 10 m or less
Operation stops suddenlyThere is obstacle at the air intake or outlet.Remove it
The unit fails to cool (or heat) the room effectivelyThere is obstacle at the air intake or outlet.Remove it
Wrong temperature settingRefer to p.5
Low fan speedRefer to p.5
Air direction is not correctRefer to p.6
The door or window is open.Close them
Direct sunshineClose the curtain or blinder
There is heat source or too many people in the room.
The air filter is dirty or blocked.Clean it
The unit does not operatewhen you restart the unitThis is to protect the internal mechanisms. Wait 3 minutes before operating the unit.
when power is switched onWait for 1 minute
Mists come outwhen coolingRoom air is chilled rapidly and becomes foggy
Outdoor unit is hotafter the unit is stoppedCompressor is emitting heat to get ready for restarting
NoiseBuzz is heard at startingIt's the starting sound of thermostat and will turn low after 1 minute
Sound of running water can be heard during operationThis is caused by the refrigerant flowing inside the unit
A "shuh" sound is heard when unit starts/stops operation or defrost. A continuous low "shah" sound is heard during cooling operation or at a stop.This is the noise of refrigerant caused by flow stop and flow change The noise is heard when the drainage pump is in operation
Cracking noise can be heard during or after operationThis sound is generated by the friction of the front panel and other components expanding or connecting due to a temperature change
Dust from the unitStarting operation after not using for a long time.Dust absorbed by the unit blows out
OdorsDuring operationCarpet and furniture odors that entered into the unit may be sent out from the unit

Sharp KC-6400E air conditioner troubleshooting

SYMPTOMREMEDY (not a malfunction)
Odours and smoke are not removed.• Clean or replace the filters if they appear to be heavily soiled. (Refer to E-15.E-18)
The CLEAN-SIGN Light illuminates green even when the air is impure.• The air could be impure at the time the unit was plugged in. (Refer to E-6). Pull out the plug from the electrical outlet, and insert the plug one minute later.
The CLEAN-SIGN Light illuminates orange or red even when the air is clean.• The sensitivity of the sensors become unstable when the opening of the odour sensor or dust sensor is dirty or is clogged. Clean the dust around the sensor opening using a vacuum cleaner. (Refer to E-14)
A clicking or ticking sound is heard from the unit.• Clicking sound or ticking sound is emitted when the unit is generating ions.
The discharged air has an aroma or odour.• Check to see if the filters are heavily soiled. Replace the filters.
• Plasmacluster Air Purifiers emit small traces of ozone which may produce an odour. These ozone emissions are well below safety levels.
The unit does not operate when cigarette smoke is in the air.• Is the unit installed in a location that is difficult for the sensor to detect cigarette smoke?
• Are the dust or odor sensor openings blocked or clogged? (In this case, clean the openings.) (Refer to E-14) (Care Cycle : MIST Filter: 1 month)
The MIST Filter Indicator Light remains activated even after replacing filter.• After replacing filters, connect the power cord to an outlet and press the Mist Filter Reset Button. (Refer to E-17)
The Plasmacluster Indicator Light or the CLEAN-SIGN Light will not activate.• Check to see if the Lights OFF Mode selected. If so, then press the Plasmacluster ON/OFF Button for 3 seconds to activate the indicator lights. (Refer to E-13)
Plasmacluster Indicator Light repeat colour cycles between light and shade.• The ION SHOWER operation is working.
The Mist Filter Indicator Light does not turn on even water is in.• Please check if the impurities adhered to the surface of the Float. Clean the Mist Tray. Check to see if the Main Unit is put on a inclined surface.
When the water of the tank does not decrease or the decrease of the water is slow.• Check to see if the Mist Tray and Tank are installed correctly.
• Check the Mist Filter. Replace the filter when it is heavily soiled. (Refer to E-17,18)
The CLEAN-SIGN LIGHT switches frequently.• The CLEAN-SIGN Light will automatically switches the colours when detected by dust and odour sensors.

Sharp AF-S60FX air troubleshooting

No display on panel or any one of the buttons failure.Transformer (Discharge transformer before testing)Check resistance between the two input/output lines on transformer. Replace the transformer if either of the input/output is open or the transformer is damaged.
Remote control failure.Display board or main PCB failureCheck the voltage of display board. Replace the display board if it is +5V else replace the main PCB.
Battery failureCheck the voltage of battery. Replace batteries if the voltage is lower than 2.3V.
Stop instantly after startup.RefrigerantThe amount of the refrigerant is too much, making the compressor load too big. Recycle and recharge the refrigerant after checking for the reason.
CompressorThe compressor is seized. Replace after checking for the reason.
Fan motor will not run.Transformer (Discharge transformer before testing)Check resistance between the two input/output lines on transformer. Replace the transformer if either of the input/output is open or the transformer is damaged.
No powerCheck voltage at electrical outlet. Correct if none.
Power supply cordCheck voltage at the power cord terminal on Main PCB. Replace the power cord if none.
Wire disconnected or connection looseConnect wire. Refer to wiring diagram for terminal identification. Repair or replace loose terminal.
Main PCB failureSelect fan speed and Check the voltage on main PCB. Replace the main PCB if no voltage in all three.
Capacitor (Discharge capacitor before testing)Test capacitor. Replace if not within +/-10% of manufacture's rating. Replace if shorted, open or damaged.
Will not rotateFan blade hitting shroud or blower hitting scroll. Realign assembly. Check fan motor bearings. Replace the motor if motor shaft do not rotate.
Fan motor noise.FanReplace the fan if cracked, out of balance, or partially missing.
BlowerReplace the blower if cracked, out of balance, or partially missing.
Loose screwsTighten them.
Worn bearingsReplace the motor if knocking sounds continue when running or loose, or the motor hums or noise appears to be internal while running.
The compressor not to stop even the room temperature has got to the setting temperature.Room temperature sensorCheck and replace if the temperature is open or damaged.
Main PCBCheck and replace the main PCB if the relay on PCB is shorted or damaged.
Compressor will not run while fan motor runs.VoltageCheck voltage. Call Supply Authority if not within limits.
WiringCheck the wire connections, if loose, repair or replace the terminal. If wires are off, refer to wiring diagram for identification, and replace. Check wire locations. If not per wiring diagram, correct.
Main PCB failureCheck voltage of main PCB. Replace the main PCB if open.
Capacitor (Discharge capacitor before testing)Check the capacitor. Replace if not within +/-10% of manufacturers rating. Replace if shorted, open, or damaged.
Room temp sensorCheck the temperature setting if not at the coolest (in cooling mode) or the warmest (in heating mode). Set it if not.
CompressorCheck the compressor for open circuit or ground. If open or grounded, replace the compressor.
Insufficient cooling.Air filterClean or replace if restricted.
Vent. DoorClose if open.
Unit undersizedDetermine if the unit is properly sized for the area to be cooled or heated.
Condenser and EvaporatorClean or replace if restricted.
Fan motorCheck the fan capacitor and replace if not within +/-10% of manufactures rating.
Room structureTake proper measures to make the door and windows sealed well if gap is found.
Air flowClean or remove if any barrier is found to block the inlet/outlet wind flow of the unit.
SunlightAdd a awning if the condenser is exposed to the sunlight.
Less refrigerantCheck the tubes for reasons of leakage. Recycle the refrigerant, correct the leakage points and recharge.
Capillary tubeRegulate the flow if capillary tube and make the evaporating temperature appropriate if the evaporator is frosted. Replace if blocked. Repair joint if leaking.
CompressorThe inlet and outlet valve of the compressor is damaged, making the low pressure connected with the high pressure. The refrigerating system can not produce high pressure and low pressure. Replace the compressor after checking for the reason.
Heat sourcesReduce if too many.
Excessive noise.Copper tubingRemove the cabinet and carefully rearrange tubing not to contact cabinet, compressor, shroud and barrier.
The unit starts and stops frequently.Power supplyThe input power supply voltage is too low. Call an electrician if not within limits.
Main PCBCheck and replace the main PCB if the relay on PCB is shorted or damaged.
Outdoor temperatureWhen the outdoor temperature is too high, the compressor will protect.
No cooling.No powerCheck the voltage. Call an electrician if no within the limit.
WiringCheck the terminals. Repair and correct if loose.
Temperature settingCheck and adjust the temperature setting.
Mode settingCheck and adjust the mode setting.
Main PCBCheck the voltage of main PCB. Replace the main PCB when the unit failure in heating mode.

Sharp AY-X09NCJ air troubleshooting

The unit can not be started up:• Is the power connected?
• Is the power plug loose? (if applicable)
• Is the circuit protection device tripped off?
• Is voltage higher or lower? (Tested by professionals)
• Is the TIMER correctly used?
Cooling/Heating effect is poor:• Is temperature setting appropriate?
• Is the inlet or outlet blocked?
• Is the filter dirty?
• Is low fan speed set?
• Are there heat sources in the room?
Remote controller is not working:• Check the conditions of the batteries and replace them if necessary.
• Check if there is magnetic or electrical interference near the unit that may affect operation of the controller. In this case, pull the plug out and reinsert it.
• Is the remote controller within its operating range or obstructed?
• Check if the remote controller is damaged.
Water leakage of indoor unit:• The humidity is high.
• Condensing water overflows.
• Drain hose is loose or blocked.
Water leakage of outdoor unit:• During cooling operation, water condensate is generated around the pipes and connection joints.
• During defrosting operation, the thaw water flows out. This is normal
Noise from indoor unit:• The noise emitted when the fan or compressor relay is switched on or off.
• Dirty filters will cause the fan to vary in speed. At this time please clean filters.
The unit does not operate:• The unit does not operate if it is turned on immediately after it is turned off.
“Water flowing” noise:• The swishing noise like water flowing is the refrigerant flowing inside the unit.
Mist is emitted in COOL mode:• During cooling operation, a thin mist may be seen emitted from the indoor unit due to high room temperature and humidity. After a period of time, the mist will disappear with the decrease of room temperature and humidity.

Error codes and troubleshooting