How do I reset my Sharp air conditioner?

To reset a Sharp air conditioner, turn off the main power supply or circuit breaker and wait for about 5 to 10 minutes. Then restore the power and restart the AC. This reset may clear minor system error codes.

What are the common causes of Sharp AC error codes?

Common causes of Sharp AC error codes include dirty air filters, refrigerant leakage, voltage fluctuations, blocked condenser coils, sensor failure, and poor maintenance.

Sharp AC Error Codes List and Fix

Q: What does P2 error mean in Sharp AC?

P2 error in a Sharp air conditioner usually indicates low refrigerant pressure in the system. This may be caused by refrigerant leakage, improper installation, or damaged copper piping.

Q: Why is my Sharp AC showing E7 error?

E7 error means there is a communication problem between the indoor unit and outdoor unit. It is commonly caused by loose wiring, a damaged communication cable, or a faulty control board.

Q: Can I fix Sharp AC error codes myself?

Some minor Sharp AC error codes can be resolved by cleaning the air filters, ensuring proper airflow, or resetting the system. However, major faults related to refrigerant, compressor, or PCB require a professional HVAC technician.

Q: How long does a Sharp air conditioner last?

A Sharp air conditioner typically lasts between 10 and 15 years with proper installation, regular servicing, and routine maintenance.

by HvacinExpert · Published March 5, 2026 · Updated March 5, 2026

Sharp AC Error Codes List and Fix (Complete Troubleshooting Guide)

If your Sharp air conditioner is displaying an error code like E0, E1, E6, F1, or H3, it means the system has detected a problem.

Modern Sharp inverter air conditioners are equipped with intelligent self-diagnosis technology that monitors system performance and automatically displays error codes when a malfunction occurs.

These codes help technicians and homeowners identify problems quickly and prevent serious damage to the air conditioner.

In this detailed troubleshooting guide, you will learn:

Complete Sharp AC error codes list
Meaning of each error code
Possible causes of the problem
Step-by-step troubleshooting solutions
DIY vs technician repair difficulty
Estimated repair cost

Understanding Sharp AC error codes helps you diagnose problems faster and reduce repair expenses.

How Sharp AC Self-Diagnosis System Works

Modern Sharp inverter air conditioners use a microprocessor control board (PCB) that continuously monitors system operations.

The system checks parameters such as:

Room temperature sensor
Evaporator coil temperature
Outdoor condenser temperature
Compressor current
Refrigerant pressure
Indoor-outdoor communication signals
Fan motor speed

If an abnormal condition occurs, the AC system will:

Display an error code on the indoor unit display
Stop compressor operation if required
Enter protection mode
Prevent damage to system components

This protects important parts such as:

Compressor
Fan motor
Sensors
Refrigerant circuit
Electronic control board

How to Check Sharp AC Error Codes

Before troubleshooting, confirm the exact error code displayed by your Sharp AC.

Indoor Unit Display

Most Sharp split AC models show error codes directly on the LED display panel.

Remote Controller Diagnosis

Some models allow error code detection through remote control diagnostic mode.

LED Flash Indicators

Older models indicate errors using blinking LED lights.

Always note the exact error code before restarting the system.

Complete Sharp AC Error Codes List

Below are the most common Sharp AC error codes and solutions.

Sensor Error Codes

E0 – Indoor Room Temperature Sensor Fault

Cause: Thermistor malfunction
Fix: Replace indoor temperature sensor

E1 – Indoor Coil Sensor Error

Cause: Evaporator thermistor failure
Fix: Replace coil sensor

E2 – Outdoor Temperature Sensor Error

Cause: Outdoor thermistor damage
Fix: Replace sensor

E3 – Condenser Coil Sensor Fault

Cause: Condenser temperature sensor malfunction
Fix: Replace sensor

E4 – Discharge Temperature Sensor Error

Cause: Compressor discharge thermistor fault
Fix: Replace sensor

E5 – Indoor Sensor Open Circuit

Cause: Broken thermistor wiring
Fix: Replace sensor

E6 – Indoor Sensor Short Circuit

Cause: Thermistor short circuit
Fix: Replace sensor

Communication Error Codes

E7 – Indoor-Outdoor Communication Error

Cause: Communication cable issue
Fix: Check wiring between units

E8 – Communication PCB Fault

Cause: Control board malfunction
Fix: Replace PCB

E9 – Remote Communication Error

Cause: Remote receiver problem
Fix: Replace receiver board

Fan Motor Error Codes

F0 – Indoor Fan Motor Fault

Cause: Motor failure
Fix: Replace indoor fan motor

F1 – Indoor Fan Speed Error

Cause: Motor speed abnormal
Fix: Inspect motor assembly

F2 – Outdoor Fan Motor Fault

Cause: Condenser fan motor damage
Fix: Replace outdoor fan motor

F3 – Outdoor Fan Lock Protection

Cause: Fan motor jammed
Fix: Clean or replace motor

F4 – Fan Motor Overcurrent Protection

Cause: Electrical overload
Fix: Inspect wiring

Refrigerant System Error Codes

P0 – Refrigerant System Protection

Cause: Low refrigerant pressure
Fix: Check refrigerant charge

P1 – High Pressure Protection

Cause: Dirty condenser coil
Fix: Clean condenser coil

P2 – Low Pressure Protection

Cause: Refrigerant leakage
Fix: Leak detection and gas refill

P3 – Compressor Temperature Protection

Cause: Compressor overheating
Fix: Check airflow and refrigerant

P4 – Inverter Drive Error

Cause: Inverter PCB malfunction
Fix: Replace inverter board

P5 – Refrigerant Overcharge Protection

Cause: Excess refrigerant
Fix: Adjust refrigerant level

Compressor Protection Codes

H1 – Compressor Overload Protection

Cause: Overheating compressor
Fix: Inspect refrigerant pressure

H2 – Compressor Start Failure

Cause: Capacitor damage
Fix: Replace capacitor

H3 – Compressor Overcurrent Protection

Cause: Electrical overload
Fix: Inspect compressor wiring

H4 – Compressor Phase Protection

Cause: Phase imbalance
Fix: Electrical inspection

H5 – Compressor Drive Module Fault

Cause: Inverter PCB damage
Fix: Replace control board

Voltage and Power Error Codes

U1 – Power Supply Voltage High

Cause: Voltage fluctuation
Fix: Install stabilizer

U2 – Power Supply Voltage Low

Cause: Low electrical supply
Fix: Check power supply

U3 – Phase Loss Protection

Cause: Missing phase
Fix: Electrical repair required

U4 – Phase Sequence Error

Cause: Incorrect wiring sequence
Fix: Correct phase wiring

Quick Reference Table – Sharp AC Error Codes

Code	Meaning	Cause	Difficulty
E0	Room sensor fault	Thermistor failure	Medium
E7	Communication error	Wiring issue	High
F0	Indoor fan motor fault	Motor failure	Medium
P2	Low pressure protection	Refrigerant leak	High
H3	Compressor overcurrent	Electrical overload	High
U1	High voltage protection	Voltage fluctuation	Medium

Minor vs Major Sharp AC Error Codes

Minor Errors (DIY Fix Possible)

These issues may resolve after cleaning filters or resetting the system.

Major Errors (Technician Required)

These involve compressor or refrigerant system repair.

Estimated Sharp AC Repair Cost

Problem	Estimated Cost
Sensor Replacement	₹1000 – ₹3000
Gas Refill	₹2000 – ₹6000
Fan Motor Repair	₹3000 – ₹8000
PCB Replacement	₹5000 – ₹12000
Compressor Replacement	₹12000+

Actual cost varies depending on model and city location.

Common Reasons for Sharp AC Errors

Most Sharp AC faults occur due to:

Dirty air filters
Refrigerant leakage
Voltage fluctuation
Condenser airflow blockage
Improper installation
Lack of maintenance

Regular servicing prevents most problems.

Preventive Maintenance Tips

Clean air filters every month
Service AC before summer season
Keep condenser coil clean
Maintain airflow around outdoor unit
Install voltage stabilizer
Schedule yearly HVAC inspection

Preventive maintenance can reduce breakdowns by up to 70%.

Frequently Asked Questions

How do I reset my Sharp AC?

Turn off the power supply for 5–10 minutes, then restart the air conditioner.

What does P2 error mean in Sharp AC?

P2 indicates low refrigerant pressure, usually caused by refrigerant leakage.

Why is my Sharp AC showing E7 error?

E7 indicates communication failure between indoor and outdoor units.

Can I fix Sharp AC error codes myself?

Minor errors may be fixed by cleaning filters or resetting the AC, but major errors require technician service.

How long does a Sharp air conditioner last?

A Sharp AC typically lasts 10–15 years with proper maintenance.

Final Summary

Sharp AC error codes help diagnose problems related to:

Sensors
Refrigerant system
Fan motors
Compressor protection
Electrical supply

Understanding these codes allows you to:

Diagnose AC problems quickly
Reduce repair costs
Prevent system damage
Extend AC lifespan

Minor issues : Reset AC and clean filters
Major issues : Call HVAC technician

Conclusion

Sharp AC error codes are designed to protect your air conditioner from serious damage.

Whether it is E0 sensor fault, P2 refrigerant leak, or H3 compressor overload, early troubleshooting can save both time and repair costs.

Regular maintenance, proper installation, and professional servicing will ensure your Sharp air conditioner operates efficiently for many years.