Sharp Air Conditioners Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E0
Indoor unit will not start cooling; display shows E0 shortly after power-on.
Indoor Unit EEPROM / Main PCB Communication Error
E1
Indoor unit stops and displays E1; outdoor unit does not run.
Indoor–Outdoor Communication Failure
E2
Indoor unit runs briefly then stops; display shows E2 and cooling stops.
Indoor Room Temperature Sensor (Thermistor) Fault
E3
Unit stops cooling and shows E3; sometimes occurs after long operation.
Indoor Coil (Evaporator) Temperature Sensor Fault
E4
Unit stops and displays E4; may occur during heating or cooling changeover on heat pump models.
Indoor Fan Motor or Fan Feedback Error
E5
Outdoor unit does not start; indoor unit may show E5 after a short delay.
Outdoor Unit Protection / Overcurrent or Overload
E6
Unit attempts to start but quickly stops; E6 appears on the indoor display.
Compressor Start Failure / Inverter Drive Fault
E7
Indoor unit shows E7; outdoor fan may not run or runs erratically.
Outdoor Fan Motor Fault
E8
Unit stops with E8; may be accompanied by very cold indoor coil or frost.
Indoor Coil Freeze Protection / Low Evaporator Temperature
E9
Unit stops and displays E9; sometimes associated with water leakage or abnormal coil temperature.
Indoor Coil Overheat / Protection Error
F0
Unit does not cool effectively; indoor display shows F0.
Refrigerant System Low Charge / Underload Protection
F1
Indoor unit shows F1; cooling performance is poor or erratic.
Outdoor Ambient Temperature Sensor Fault
F2
Unit stops or runs abnormally; F2 appears on the display.
Outdoor Coil (Condenser) Temperature Sensor Fault
F3
Heat pump models: unit stops in heating mode; F3 is displayed.
Discharge Pipe Temperature Sensor Fault / Overheat
F4
Unit stops and F4 is displayed; often associated with high outdoor temperature or dirty condenser.
High Discharge Temperature / Overheat Protection
F5
Unit stops intermittently; F5 appears, often during extreme ambient conditions.
Outdoor Unit Overload / Current Protection
H0
Unit does not respond to remote; H0 may flash on the display.
Indoor Unit EEPROM / Memory Error
H1
Heat pump models: unit does not start heating; H1 displayed.
Defrost or Heating Mode Protection / Low Outdoor Temperature Lockout
H2
Unit stops heating or cooling; H2 appears intermittently.
Indoor Unit Overheat / Heat Exchanger Protection
H3
Unit stops and H3 is displayed; often after long operation in high load conditions.
Compressor Overheat / Overload Protection
H4
Unit does not start; H4 displayed immediately after power-on.
Indoor–Outdoor Mismatch or Configuration Error
H5
Unit stops and H5 is displayed; may be associated with multiple protection trips.
System Lockout Due to Repeated Protection Events
P0
Unit does not start; P0 displayed on indoor unit.
DC Bus Voltage Protection / Inverter Power Supply Fault
P1
Unit stops during operation; P1 displayed intermittently.
Indoor Unit Voltage or Power Supply Error
P2
Portable or window-type Sharp AC: unit stops and P2 is displayed; water tank icon may flash.
Condensate Tank Full / Drainage Protection
P3
Portable Sharp AC: unit stops cooling; P3 displayed, often in low ambient conditions.
Low Ambient Temperature Protection / Anti-freeze
P4
Portable or window-type Sharp AC: unit stops; P4 displayed.
Compressor Overload / High Temperature Protection
Symptom
Burning or electrical smell from indoor or outdoor unit.
Overheating Electrical Component
Symptom
Frost or ice forming on the indoor coil or air outlet.
Evaporator Coil Icing
Symptom
Indoor unit does not power on at all; no lights or display.
No Power to Indoor Unit
Symptom
Indoor unit produces a musty or moldy smell when starting.
Biological Growth on Indoor Coil and Drain Pan
Symptom
Indoor unit runs but no cooling; air coming out is room temperature or only slightly cooler.
Loss of Cooling Capacity / Refrigerant or Compressor Issue
Symptom
Loud humming, buzzing, or knocking noise from outdoor unit.
Outdoor Mechanical Noise / Compressor or Fan Issue
Symptom
Loud rattling or buzzing noise from indoor unit during operation.
Indoor Mechanical Vibration / Loose Components
Symptom
Outdoor unit coil heavily frosts over in heating mode and does not defrost properly.
Defrost Cycle Malfunction
Symptom
Remote control does not operate the indoor unit; no response to button presses.
Remote Control / IR Receiver Failure
Symptom
Unit frequently turns on and off (short cycling) without reaching set temperature.
Short Cycling / Improper Capacity Control
Symptom
Unit powers on but compressor and outdoor fan do not start; only indoor fan runs.
Outdoor Unit Not Starting
Symptom
Unit runs but airflow from indoor unit is very weak even at high fan speed.
Restricted Indoor Airflow
Symptom
Unit trips the circuit breaker when starting or during operation.
Electrical Overload or Short Circuit
Symptom
Water dripping from the front of the indoor unit or onto the wall.
Indoor Unit Water Leakage
Symptom
Water leaking from outdoor unit base or around piping connections.
Outdoor Unit Water / Condensate Leakage
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E0 |
Indoor unit will not start cooling; display shows E0 shortly after power-on.
|
Indoor Unit EEPROM / Main PCB Communication Error | View Details |
| E1 |
Indoor unit stops and displays E1; outdoor unit does not run.
|
Indoor–Outdoor Communication Failure | View Details |
| E2 |
Indoor unit runs briefly then stops; display shows E2 and cooling stops.
|
Indoor Room Temperature Sensor (Thermistor) Fault | View Details |
| E3 |
Unit stops cooling and shows E3; sometimes occurs after long operation.
|
Indoor Coil (Evaporator) Temperature Sensor Fault | View Details |
| E4 |
Unit stops and displays E4; may occur during heating or cooling changeover on heat pump models.
|
Indoor Fan Motor or Fan Feedback Error | View Details |
| E5 |
Outdoor unit does not start; indoor unit may show E5 after a short delay.
|
Outdoor Unit Protection / Overcurrent or Overload | View Details |
| E6 |
Unit attempts to start but quickly stops; E6 appears on the indoor display.
|
Compressor Start Failure / Inverter Drive Fault | View Details |
| E7 |
Indoor unit shows E7; outdoor fan may not run or runs erratically.
|
Outdoor Fan Motor Fault | View Details |
| E8 |
Unit stops with E8; may be accompanied by very cold indoor coil or frost.
|
Indoor Coil Freeze Protection / Low Evaporator Temperature | View Details |
| E9 |
Unit stops and displays E9; sometimes associated with water leakage or abnormal coil temperature.
|
Indoor Coil Overheat / Protection Error | View Details |
| F0 |
Unit does not cool effectively; indoor display shows F0.
|
Refrigerant System Low Charge / Underload Protection | View Details |
| F1 |
Indoor unit shows F1; cooling performance is poor or erratic.
|
Outdoor Ambient Temperature Sensor Fault | View Details |
| F2 |
Unit stops or runs abnormally; F2 appears on the display.
|
Outdoor Coil (Condenser) Temperature Sensor Fault | View Details |
| F3 |
Heat pump models: unit stops in heating mode; F3 is displayed.
|
Discharge Pipe Temperature Sensor Fault / Overheat | View Details |
| F4 |
Unit stops and F4 is displayed; often associated with high outdoor temperature or dirty condenser.
|
High Discharge Temperature / Overheat Protection | View Details |
| F5 |
Unit stops intermittently; F5 appears, often during extreme ambient conditions.
|
Outdoor Unit Overload / Current Protection | View Details |
| H0 |
Unit does not respond to remote; H0 may flash on the display.
|
Indoor Unit EEPROM / Memory Error | View Details |
| H1 |
Heat pump models: unit does not start heating; H1 displayed.
|
Defrost or Heating Mode Protection / Low Outdoor Temperature Lockout | View Details |
| H2 |
Unit stops heating or cooling; H2 appears intermittently.
|
Indoor Unit Overheat / Heat Exchanger Protection | View Details |
| H3 |
Unit stops and H3 is displayed; often after long operation in high load conditions.
|
Compressor Overheat / Overload Protection | View Details |
| H4 |
Unit does not start; H4 displayed immediately after power-on.
|
Indoor–Outdoor Mismatch or Configuration Error | View Details |
| H5 |
Unit stops and H5 is displayed; may be associated with multiple protection trips.
|
System Lockout Due to Repeated Protection Events | View Details |
| P0 |
Unit does not start; P0 displayed on indoor unit.
|
DC Bus Voltage Protection / Inverter Power Supply Fault | View Details |
| P1 |
Unit stops during operation; P1 displayed intermittently.
|
Indoor Unit Voltage or Power Supply Error | View Details |
| P2 |
Portable or window-type Sharp AC: unit stops and P2 is displayed; water tank icon may flash.
|
Condensate Tank Full / Drainage Protection | View Details |
| P3 |
Portable Sharp AC: unit stops cooling; P3 displayed, often in low ambient conditions.
|
Low Ambient Temperature Protection / Anti-freeze | View Details |
| P4 |
Portable or window-type Sharp AC: unit stops; P4 displayed.
|
Compressor Overload / High Temperature Protection | View Details |
| – |
Burning or electrical smell from indoor or outdoor unit.
|
Overheating Electrical Component | View Details |
| – |
Frost or ice forming on the indoor coil or air outlet.
|
Evaporator Coil Icing | View Details |
| – |
Indoor unit does not power on at all; no lights or display.
|
No Power to Indoor Unit | View Details |
| – |
Indoor unit produces a musty or moldy smell when starting.
|
Biological Growth on Indoor Coil and Drain Pan | View Details |
| – |
Indoor unit runs but no cooling; air coming out is room temperature or only slightly cooler.
|
Loss of Cooling Capacity / Refrigerant or Compressor Issue | View Details |
| – |
Loud humming, buzzing, or knocking noise from outdoor unit.
|
Outdoor Mechanical Noise / Compressor or Fan Issue | View Details |
| – |
Loud rattling or buzzing noise from indoor unit during operation.
|
Indoor Mechanical Vibration / Loose Components | View Details |
| – |
Outdoor unit coil heavily frosts over in heating mode and does not defrost properly.
|
Defrost Cycle Malfunction | View Details |
| – |
Remote control does not operate the indoor unit; no response to button presses.
|
Remote Control / IR Receiver Failure | View Details |
| – |
Unit frequently turns on and off (short cycling) without reaching set temperature.
|
Short Cycling / Improper Capacity Control | View Details |
| – |
Unit powers on but compressor and outdoor fan do not start; only indoor fan runs.
|
Outdoor Unit Not Starting | View Details |
| – |
Unit runs but airflow from indoor unit is very weak even at high fan speed.
|
Restricted Indoor Airflow | View Details |
| – |
Unit trips the circuit breaker when starting or during operation.
|
Electrical Overload or Short Circuit | View Details |
| – |
Water dripping from the front of the indoor unit or onto the wall.
|
Indoor Unit Water Leakage | View Details |
| – |
Water leaking from outdoor unit base or around piping connections.
|
Outdoor Unit Water / Condensate Leakage | View Details |
No matching codes found
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