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Gree AC Error Code Breakdown
4 CommentsAir Conditionearing

Error codes on your Gree AC cause frustration, especially during extreme weather. These digital alerts signal specific malfunctions in your air conditioning system, including common codes like Gree inverter AC error codes E6, E4, and H6. Quick identification and resolution of these issues prevent minor problems from escalating into major repairs. This comprehensive guide breaks down the complete Gree AC error code list for standard and inverter models. We provide straightforward troubleshooting steps for each code, which helps homeowners diagnose problems quickly. Whether you face a Gree split AC error code or need to understand what these cryptic codes mean, this blog is for you.

Gree AC Error Codes

Gree AC error codes follow a simple alphanumeric system that combines letters and numbers to indicate specific problems. Each Gree AC error code list code corresponds to a distinct malfunction within your unit’s components.

For example, the common E6 error, Gree AC, signals an issue with communication between indoor and outdoor units, while Gree AC error code E4 typically indicates voltage problems. These codes appear on your unit’s display panel as a quick alert system.

This diagnostic method allows for precise troubleshooting rather than guesswork. Thus, when you face a serious issue like the Gree AC error code H6, you can immediately identify the exact problem and apply the appropriate solution.

E Series Error Codes

Error Code Description Possible Causes Solutions
E1 High-Pressure Protection Dirty coils

Restrictions in the system

Overcharging of refrigerant
  • Clean the coils
  • Inspect and clear any restrictions
  • Verify and adjust refrigerant levels as needed
E2 Anti-Freeze Protection Indoor evaporator coil temperature too low
  • Ensure proper airflow
  • Check for adequate refrigerant levels
  • Inspect and clean air filters
E3 Low-Pressure Protection Refrigerant leaks

Dirty evaporator coils
  • Inspect for and repair any refrigerant leaks
  • Clean the evaporator coils
E4 High Discharge Temperature Protection Compressor discharge temperature too high
  • Verify refrigerant levels
  • Ensure proper airflow
  • Inspect and clean condenser coils
E5 Overcurrent Protection Electrical issues

Compressor problems
  • Inspect electrical connections
  • Check for proper voltage supply
  • Evaluate compressor functionality
E6 Indoor/Outdoor Communication Failure Communication issues between units
  • Inspect and secure communication wiring
  • Reset the system
  • Consult a technician if the issue persists
E7 Mode Conflict Indoor and outdoor units set to different modes
  • Ensure both units are set to the same operating mode
E8 Anti High Temperature Protection System detects excessively high temperatures
  • Verify ambient temperature conditions
  • Ensure proper ventilation
  • Inspect temperature sensors
E9 Full Water Protection Water level in the system is too high
  • Check and clear drain lines
  • Inspect the condensate pump
  • Ensure proper unit leveling
EE EEPROM Malfunction Issue with the EEPROM affecting system memory
  • Reset the system
  • If unresolved, consult a technician for EEPROM inspection or replacement
EU IPM Temperature High Protection Intelligent Power Module (IPM) temperature too high
  • Ensure adequate ventilation
  • Inspect IPM for faults
  • Consult a technician for further evaluation

F Series Error Codes

Error Code Description Cause Solution
F0 Low Refrigerant Protection Insufficient refrigerant in the system
  • Inspect for refrigerant leaks and repair them
  • Recharge the system with the appropriate amount of refrigerant
F1 Indoor Ambient Sensor Open/Short Circuit Faulty indoor temperature sensor

Wiring issues
  • Test the sensor for continuity and replace if defective
  • Inspect and repair any wiring issues
F2 Indoor Coil Sensor Open/Short Circuit Defective indoor coil temperature sensor

Wiring problems
  • Check the sensor’s resistance and replace if necessary
  • Examine and fix any wiring faults
F3 Outdoor Ambient Sensor Open/Short Circuit Malfunctioning outdoor ambient temperature sensor

Wiring issues
  • Measure the sensor’s resistance and replace if it is faulty
  • Inspect and repair wiring connections
F4 Outdoor Coil Sensor Open/Short Circuit Faulty outdoor coil temperature sensor

Wiring problems
  • Test the sensor and replace it if defective
  • Check and fix any wiring issues
F5 Compressor Discharge Sensor Open/Short Circuit Defective compressor discharge temperature sensor

Wiring issues
  • Inspect the sensor and replace it if necessary
  • Examine and repair wiring connections
F6 Overload Limit Descending Frequency System overload due to high temperature or pressure

Dirty filters or coils
  • Clean or replace air filters
  • Ensure proper airflow around the unit
  • Inspect for refrigerant overcharge
F8 Overcurrent Limit Descending Frequency Electrical issues causing overcurrent

Compressor problems
  • Check electrical connections and voltage supply
  • Evaluate compressor functionality
F9 High Exhaust Temperature Limit Descending Frequency Excessively high exhaust temperatures

Poor ventilation
  • Ensure adequate ventilation around the unit
  • Inspect and clean condenser coils
FC Door Malfunction Issues with the door mechanism

Sensor faults
  • Inspect the door mechanism for obstructions or damage
  • Test and replace door sensors if necessary
FE Compressor Overload Sensor Malfunction Faulty compressor overload sensor

Wiring issues
  • Test the sensor and replace if defective
  • Inspect and repair any wiring problems
FH Anti-freeze limit Descending Frequency Low indoor coil temperature

Restricted airflow
  • Ensure proper airflow
  • Check for adequate refrigerant levels
  • Inspect and clean air filters

H Series Error Codes

Error Code Description Cause Solution
H0 Anti-high temperature limit reached System overheating

Blocked airflow

Dirty filters or coils
  • Ensure proper airflow
  • Clean or replace air filters
  • Inspect and clean coils
H1 Defrosting mode active Normal operation during defrost cycle
  • Allow the unit to complete the defrost cycle; no action is needed
H2 Electrostatic dust protection active Electrostatic filter is dirty
  • Clean or replace the electrostatic filter
H3 Compressor overload protection Overheating due to fan failure

Refrigerant leakage

Electrical issues
  • Inspect and repair the fan
  • Check for refrigerant leaks and repair
  • Evaluate electrical connections
H4 System operation abnormal System malfunction

Control board issues
  • Restart the air conditioner
  • If the error persists, inspect the control board for damage and consider replacement
H5 Intelligent Power Module (IPM) protection IPM malfunction

Voltage issues
  • Inspect the outdoor unit’s PCB
  • Address any under-voltage or over-voltage problems
H6 Indoor fan motor malfunction No feedback from the indoor fan motor

Fan blockage
  • Check for obstructions in the fan
  • Test the fan motor and replace if necessary
H7 Compressor loss step protection Compressor malfunction
  • Inspect the compressor for issues
  • Consult a technician for potential repair or replacement
HC Power Factor Correction (PFC) protection PFC circuit issues
  • Inspect the PFC circuit for faults
  • Consult a technician for further evaluation
HE Compressor demagnetization protection Compressor losing magnetic properties
  • Inspect the compressor’s magnetic components
  • Consult a technician for potential repair or replacement

L Series Error Codes

Error Code Description Cause Solution
L3 Outdoor DC Fan Motor Malfunction Faulty fan motor

Wiring issues

Obstructions in the fan mechanism
  • Inspect and clear any obstructions
  • Check wiring connections for faults
  • Replace the fan motor if necessary
LC Startup Failure Power supply issues

Faulty control board

Wiring problems
  • Verify that the power supply is stable
  • Inspect and repair or replace faulty wiring
  • Consult a technician to assess and replace the control board if needed
LD Compressor Phase Loss Protection Electrical phase loss

Faulty compressor

Wiring issues
  • Check for phase loss in the electrical supply
  • Inspect compressor functionality
  • Repair or replace faulty wiring
LE Compressor Rotor Stuck Protection Rotor obstruction

Mechanical failure within the compressor
  • Attempt to rotate the compressor rotor manually
  • If unsuccessful, consult a technician to repair or replace the compressor

P Series Error Codes

Error Code Description Cause Solution
P0 Drive module reset problem Faulty drive module
  • Replace the drive module
P5 Over compressor phase current protection Faulty compressor
  • Replace the compressor
P6 Communication failure between main and driver boards Faulty boards

Wiring issues
  • Inspect and repair wiring
  • Replace faulty boards
P7 IPM (Intelligent Power Module) sensor circuit malfunction Faulty IPM sensor

Malfunctioning IPM
  • Replace the IPM sensor
  • Replace the IPM if necessary
P8 IPM high-temperature protection Overloaded IPM

Faulty IPM
  • Reduce load on the IPM
  • Replace the IPM if overheating persists
PA AC input current protection Electrical issues

Faulty components
  • Inspect wiring and electrical components
  • Replace faulty components
PC Current detection circuit or sensor malfunction Faulty current sensor

Malfunctioning detection circuit
  • Replace the current sensor
  • Repair or replace the detection circuit
PH Over-voltage protection for PN High PN voltage

Faulty voltage regulation components
  • Inspect and repair wiring
  • Replace faulty voltage regulation components
PL Low PN voltage protection Low PN voltage

Faulty voltage regulation components
  • Inspect and repair wiring
  • Replace faulty voltage regulation components
PU Capacitor charge malfunction Faulty capacitor
  • Replace the capacitor

U Series Error Codes

Error Codes Description Cause Solution
U1 Compressor phase current detection circuit malfunction Faulty detection circuit or issues with the compressor’s electrical components.
  • Inspect and repair or replace the detection circuit; consult a technician for compressor evaluation.
U2 Compressor phase loss protection Loss of one phase in the power supply or internal compressor issues.
  • Check the power supply for phase integrity; consult a professional to inspect the compressor if intact.
U3 Protection against PN voltage drop Significant drop in the PN voltage, possibly due to an unstable power supply.
  • Ensure a stable and adequate power supply; use voltage stabilizers if necessary.
U4 Reverse running protection for compressor Incorrect wiring causing the compressor to run in reverse.
  • Verify and correct wiring connections; consult a technician if the issue persists.
U5 AC current detection circuit malfunction Faulty AC current detection circuitry.
  • Inspect and repair or replace the AC current detection components.
U7 Abnormal 4-way valve reversal Malfunctioning 4-way valve or control issues.
  • Inspect the 4-way valve for proper operation; replace if it is faulty.
U8 Exhaust temperature sensor disconnected Loose or disconnected exhaust temperature sensor.
  • Reconnect or replace the exhaust temperature sensor.
U9 Outdoor unit zero-crossing error Issues with the zero-crossing detection in the outdoor unit.
  • Inspect the zero-crossing detection circuitry; consult a technician for repairs.

Other Error Codes

Error Code Description Cause Solution
oE High temperature in PFC module or PFC module sensor malfunction Faulty PFC module

Defective sensor
  • Replace the defective module or sensor
b5 Inlet tube sensor malfunction Faulty sensor

Wiring issues
  • Replace the sensor
  • Repair the wiring
b7 Outlet tube sensor malfunction Faulty sensor

Wiring issues
  • Replace the sensor
  • Repair the wiring
C5 Jumper cap malfunction Faulty or missing jumper cap
  • Reinsert or replace the jumper cap

Troubleshooting and Maintenance Tips

First, locate the digital display on your indoor unit to interpret a Gree AC error code. The code will flash intermittently with letters and numbers, such as E6 or H6. For basic troubleshooting, power off your Gree split AC for two minutes to reset the system.

Next, inspect all power connections and verify stable voltage, as E4 errors often relate to power issues. Dirty filters restrict airflow, and regular cleaning can prevent several common errors on the Gree Inverter AC error code list.

However, persistent E6 errors in Gree inverter AC units often indicate circuit board or sensor failures that require expert attention. For complex issues with your Gree AC, contact professionals at electrafix.pk, who specialize in diagnosing and repairing advanced problems beyond simple resets or cleaning procedures.

Conclusion

This comprehensive Gree AC error code guide helps you tackle common issues without immediate professional assistance. The systematic breakdown of error codes E4, E6, H6, and others enables quick diagnosis and resolution of problems in your air conditioning system. Regular maintenance remains vital to prevent future malfunctions in your Gree split AC units. However, complex issues, particularly with Gree inverter AC models, often require expert intervention or Professional AC Repair. Remember that timely attention to these warning signals extends your unit’s lifespan and maintains optimal yearly performance.

Frequently Asked Questions

What does H6 mean on a thermostat?

The H6 error code on a thermostat typically indicates an indoor fan motor malfunction, which may result from obstructions, motor failure, or wiring issues. It’s advisable to inspect for any blockages, check wiring connections, and consult a qualified technician for accurate diagnosis and repair.

How to fix error code E6 on Gree?

The E6 error code on Gree air conditioners indicates a communication malfunction between the indoor and outdoor units. First, ensure that the communication wiring is securely connected and free from damage to resolve this. If the wiring appears intact, try resetting the system by turning off the indoor unit, waiting for it to shut down entirely, and then turning off the power to the outdoor unit for one minute before powering it back on.

How do you reset the Gree air conditioner?

To reset your Gree air conditioner, locate the small “RESET” button on the control panel or remote control and use a pointed object like a toothpick; press and hold this button for a few seconds until the unit restarts.

Comments (4)

  • 08/19/2025

    Zohan Ali

    Valuable information. Lucky me I found your web site by accident, and I’m shocked why this accident didn’t happen earlier! I bookmarked it.

    Reply
  • 09/17/2025

    Amit Kumar

    I have a Gree AC/DC Inverter air conditioner. It is showing an error where a light blinks 4 times. What does this error code mean?

    Reply
  • 02/16/2026

    Ehtisham Ali

    Gree air conditioner wall mount u crown model. Jf error show how to solve sir.

    Reply
    • 02/17/2026

      Syed Ayaz Hussain

      Turn off the AC using the remote, then switch off the main circuit breaker for at least 10 minutes. This allows the capacitors on the PCB to discharge and reset the error memory. meybe your problem solve.
      and call for electra fix +923335912005.

      Reply

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