Inverter AC Error Codes: The Ultimate Pakistan Index
Updated 6 September 2026 · By SolarNevs Research Desk, Dealer surveys + verified sources · 7 sources · Method ↗
Key Takeaways
- Error codes are specific to each AC brand and often vary by model or series; always check the relevant section for your unit.
- Many common codes indicate sensor malfunctions or communication issues, which sometimes have simple external fixes.
- Always disconnect power at the main breaker before attempting any inspection or troubleshooting to prevent electrical hazards.
- For complex issues like refrigerant leaks, PCB damage, or compressor faults, professional technician assistance is required.
What do inverter AC error codes in Pakistan mean?
Inverter AC error codes are diagnostic signals that help identify problems within your air conditioning system. These codes appear on the indoor unit's display or as LED blink patterns. They are not universal; a code like "E5" on one brand can have a completely different meaning on another, or even on a different series from the same manufacturer. This guide compiles common error codes for major inverter AC brands in Pakistan, including Gree, Orient, Dawlance, Kenwood, and PEL.
Understanding these codes can help you determine if a problem is a simple fix or requires professional service. Always refer to the specific brand and model section for accurate information.
How to diagnose inverter AC error codes
When your inverter AC displays an error code, follow these general steps to begin diagnosis:
- Note the exact code: Write down the code displayed or count the LED flash patterns precisely. Note any accompanying indicators (e.g., "Power indicator," "Cool indicator," "Heat indicator" for Gree).
- Power cycle the unit: Turn off the AC unit at the remote or unit, then switch off the main breaker supplying power to the AC for at least 5 minutes. Restore power and restart the unit to see if the code clears. This can resolve temporary glitches.
- Check external conditions: Ensure air filters are clean, there are no obstructions around the indoor or outdoor units, and the outdoor unit's heat exchanger is not dirty.
- Consult this guide: Locate your AC brand and the specific error code in the tables below to understand its meaning and suggested fix direction.
Gree Inverter AC Error Codes
Gree AC units, depending on the series, may display errors as LED flash patterns on indicators (Power, Cool, Heat) or as alphanumeric codes (e.g., E1, F1) on the display. It is crucial to note which indicator is flashing or if an alphanumeric code is shown, as meanings differ.
Gree (Split Type & Floor Standing Unit) Error Codes
These codes are indicated by the Power, Cool, or Heat indicator flashing a specific number of times.
Code (Indicator) | Meaning | Fix Direction |
|---|---|---|
Flash 15 times (Power) | Malfunction of jumper cap | Insert the equipped jumper cap; Insert the jump cap tightly again; Replace the jumper cap with a new one; Replace the main board with a new one. |
Flash 6 times (Power) | Communication malfunction between indoor unit and outdoor unit | Check connection wires, wiring inside the unit, and communication circuits of control boards. |
Flash 5 times (Power) | IPM protection | Check compressor connection, power supply voltage, resistance, and heat exchanger conditions. |
Flash 3 times (Power) | Overload protection of compressor | Check overload protector, electronic expansion valve, and refrigerant leakage. |
Flash once (Power) | Indoor ambient temperature sensor is open/short-circuited | Check temperature sensor connection, replace sensor, or replace main board of indoor unit. |
Flash twice (Power) | Indoor evaporator temperature sensor is open/short-circuited | Check temperature sensor connection, replace sensor, or replace main board of indoor unit. |
Flash 11 times (Power) | No feedback from indoor unit’s motor | Check if fan is blocked, motor terminal is loose, connection wire is damaged, motor is damaged, or main board of indoor unit is damaged. |
Flash 22 times (Power) | Gas valve temperature sensor is ON / short-circuited | Check temperature sensor connection/damage, wire damage (short circuit to copper pipe/outer casing), or main board of outdoor unit damage. |
Flash 19 times (Power) | Liquid valve temperature sensor is ON / short-circuited | Check temperature sensor connection/damage, wire damage (short circuit to copper pipe/outer casing), or main board of outdoor unit damage. |
Flash once (Cool) | High pressure protection of system | Clean outdoor unit heat exchanger, check ambient temperature, power voltage, refrigerant amount, high pressure switch wiring/damage, or internal system blockage. |
Flash 3 times (Cool) | Low pressure/low system pressure protection/compressor low pressure protection | Check if low pressure switch is damaged or refrigerant inside the system is insufficient. |
Flash 4 times (Cool) | High discharge temperature protection of compressor | Check overload protector, electronic expansion valve, and refrigerant leakage. |
Flash 5 times (Cool) | AC overcurrent protection | Check power voltage stability/level, system load, indoor unit heat exchanger cleanliness, fan motor operation, compressor blockage, internal system blockage, or outdoor unit main board damage. |
Flash 7 times (Cool) | Mode shock/system mode shock | Malfunction of one-to-more system; two indoor units set to conflicting modes (e.g., one cooling, one heating). |
Flash 8 times (Cool) | High temperature prevention protection | Check outdoor ambient temperature, unit radiation, fan terminal connection, fan capacitor, and outdoor fan. |
Flash 15 times (Cool) | Malfunction of EEPROM | Main board of outdoor unit is damaged. |
Flash once (Heat) | Refrigerant-recovery mode | This is a maintenance operation performed by personnel, not a fault. |
Flash 3 times (Heat) | Outdoor ambient temperature is open/short-circuited | Check temperature sensor connection/damage, wire damage (short circuit between sensor and copper pipe/outer case), or main board of outdoor unit damage. |
Flash 4 times (Heat) | Outdoor condenser temperature sensor is open/short-circuited | Check temperature sensor connection/damage, wire damage (short circuit between sensor and copper pipe/outer case), or main board of outdoor unit damage. |
Flash 5 times (Heat) | Outdoor air discharge temperature is open/short-circuited | Check exhaust temperature sensor connection/damage, wire damage (short circuit between sensor and copper pipe/outer case), or main board of outdoor unit damage. |
Flash 7 times (Heat) | Desynchronizing of compressor | Check fan terminal, fan capacity, unit radiation, compressor stop time, compressor wire connection, input voltage, and refrigerant amount. |
Flash 6 times (Heat) | PFC protection | Check power grid quality, AC input voltage, power plug/wiring board/reactor connection, indoor/outdoor heat exchanger cleanliness, or outdoor unit main board damage. |
Flash 14 times (Heat) | Demagnetization protection of compressor | Main board of outdoor unit is damaged or compressor is damaged. |
Flash 15 times (Heat) | Over-phase current protection of compressor | Check overload protector, electronic expansion valve, and refrigerant leakage. |
Flash 16 times (Heat) | Communication malfunction between the drive board and the main board | Drive board is damaged, main board of outdoor unit is damaged, or drive board and main board are not connected well. |
Flash 18 times (Heat) | Circuit malfunction of module temperature sensor | Replace outdoor control board. |
Flash 19 times (Heat) | Module overheating protection | Check if air inlet/outlet of outdoor unit are blocked, condenser is blocked, IPM screw of main board is not tightened, or main board of outdoor unit is damaged. |
Flash 11 times (Heat) | DC bus voltage is too high | Measure voltage between L and N on wiring board (XT); if higher than 265 VAC, wait for voltage to decrease. If AC input is normal, replace outdoor control board. |
Flash 21 times (Heat) | DC bus voltage is too low | Measure voltage between L and N on wiring board (XT); if lower than 150 VAC, wait for voltage to increase. If AC input is normal, replace outdoor control board. |
Flash 17 times (Heat) | Charging malfunction of capacitor | Check voltage at electrolytic capacitor, AC voltage at wiring board XT, and reactor connection. |
Flash 13 times (Heat) | Phase current detection circuit malfunction | The control board is damaged. |
Flash 12 times (Heat) | Lost phase protection of compressor | Main board of outdoor unit is damaged, compressor is damaged, or connection wire of compressor is not connected well. |
Flash 20 times (Heat) | DC bus voltage drop malfunction | The power voltage is unstable. |
Flash 17 times (Power) | Malfunction of zero-crossing signal of indoor unit | The power is abnormal or main board of indoor unit is damaged. |
Gree (U-match Series Ducted Cassette) Error Codes
These codes are typically displayed as alphanumeric characters on the unit's display.
Code | Meaning | Fix Direction |
|---|---|---|
E1 | High pressure protection | Switch off the unit or re-energize the unit after cutting off power to eliminate this protection. |
E2 | Freeze protection | Unit will not run until evaporator temperature is higher than protective temp. value and compressor is stopped for 3min. |
E3 | Low pressure protection / Refrigerant lacking protection / Refrigerant recycling mode | If fault occurs 3 times, unit cannot be recovered automatically. For refrigerant recycling mode, code disappears after exiting. |
E4 | Compressor high discharge temperature protection | Switch off the unit or re-energize the unit after cutting off power to eliminate this protection. |
E6 | Communication malfunction | If communication abnormity between display board and indoor unit, communication malfunction will be reported. |
E8 | Malfunction of indoor fan motor | Unit can automatically resume operation after stopping. If malfunction occurs 6 times within one hour, unit cannot be recovered automatically. Switch off or re-energize to eliminate. |
E9 | Full water protection | Switch off the unit and then switch it on to eliminate this malfunction. |
E10 | Malfunction of indoor ambient temperature sensor at air return port | Unit can automatically resume operation after the malfunction disappears. If in fan mode, only error code displayed, unit works normally. |
F1 | Malfunction of evaporator temperature sensor | Unit can automatically resume operation after the malfunction disappears. If in fan mode, only error code displayed, unit works normally. |
F2 | Malfunction of condenser temperature sensor | Unit can automatically resume operation after the malfunction disappears. If in fan mode, only error code displayed, unit works normally. |
F3 | Malfunction of outdoor ambient temperature sensor | Unit can automatically resume operation after the malfunction disappears. If in fan mode, only error code displayed, unit works normally. |
F4 | Malfunction of discharge temperature sensor | Unit can automatically resume operation after the malfunction disappears. |
F5 | Malfunction wired controller temperature sensor | No specific fix direction provided, implies sensor replacement. |
EE | Malfunction of outdoor drive memory chip | If fault occurs 3 times, unit cannot be recovered automatically. Switch off or re-energize to eliminate. |
H3 | Compressor overload protection | If malfunction occurs 6 times within one hour, unit cannot be recovered automatically. Switch off or re-energize to eliminate. |
H4 | Overload protection | Unit will not restart operation until tube temperature is lower than protective temp. value and compressor is stopped for 3min. If protection occurs over 6 times, unit cannot be recovered automatically. Switch off or re-energize to eliminate. |
H6 | Malfunction of outdoor fan motor | Unit can automatically resume operation after stopping. If malfunction occurs 6 times within one hour, unit cannot be recovered automatically. Switch off or re-energize to eliminate. |
U7 | Direction changing malfunction of 4-way valve | Unit can automatically resume operation in the first two malfunctions. If malfunction occurs 3 times, unit cannot be recovered automatically. Switch off or re-energize to eliminate. |
P6 | Communication malfunction between main control and drive | This malfunction can be eliminated automatically. |
OE | Malfunctions of outdoor unit | Refer to status of error indicator in outdoor unit. |
Orient Inverter AC Error Codes
Orient error codes are commonly reported by installers and are generally applicable to their inverter AC models.
Code | Meaning | Fix Direction |
|---|---|---|
E0 | Indoor Unit overcurrent protection | Professional service implied. |
E1 | Indoor Unit Room Sensor Error | Professional service implied. |
E2 | Outdoor Unit Condenser Sensor Error | Professional service implied. |
E3 | Indoor Unit Evaporator Sensor Error | Professional service implied. |
E4 | AC or DC Motor Error | Professional service implied. |
E5 | Indoor & Outdoor Unit Communication Error | Professional service implied. |
E8 | Communication Fault between Display Board & PCB Board | Professional service implied. |
Eb | Indoor Unit PCB Error | Professional service implied. |
F0 | Outdoor Unit Fan Motor Error | Professional service implied. |
F1 | Outdoor Unit Module Protection Error | Professional service implied. |
F2 | Outdoor Unit PFC Protection Error | Professional service implied. |
F3 | Compressor Start Failure or out-of-step Error | Professional service implied. |
F4 | Outdoor Unit Discharge Sensor Error | Professional service implied. |
F6 | Outdoor Unit Room Sensor Error | Professional service implied. |
F8 | Outdoor Unit Communication Error between PCB & Module Board | Professional service implied. |
F9 | Outdoor Unit PCB Error | Professional service implied. |
Dawlance Inverter AC Error Codes
Dawlance error codes are commonly reported by installers and are generally applicable to their inverter AC models.
Code | Meaning | Fix Direction |
|---|---|---|
DF | Defrost Mode (Normal Function) | Wait; AC will resume automatically. |
E1 | Indoor Room Temperature Sensor Error | Restart the AC. If the error continues, professional sensor replacement is required. / Check wiring or replace sensor. |
E2 | Indoor Coil Temperature Sensor Error | Clean the indoor unit. Call service if error persists. |
E3 | Outdoor Coil Temperature Sensor Error | Turn off the AC and contact authorized service. / Inspect outdoor sensor. |
E4 | Indoor Fan Motor Error | Check for dust or obstruction. If unresolved, motor servicing is needed. / Clean fan; call technician if needed. |
E5 | Outdoor Fan Motor Error / Indoor & Outdoor Unit Communication Error | Switch off AC and arrange technician inspection. / Reset AC. Call service if error reappears. |
E8 | PCB Communication Error | Secure connections or replace PCB. |
E9 | Low Pressure Protection | Call certified technician. |
F0 | Refrigerant System Protection / Outdoor Fan Motor Error | Professional gas check and refill required. / Remove obstruction; service if required. |
F1 | Indoor Sensor Communication Error / Outdoor Module Protection | Reset AC. Call service if error reappears. / Improve ventilation and restart. |
F2 | PFC (Power Factor Correction) Error | Check wiring; use stabilizer. |
F3 | Compressor Start Failure | Professional inspection required. |
H3 | Compressor Overload Protection | Clean outdoor unit and ensure proper ventilation. |
H5 | IPM Module Protection | Use voltage stabilizer and contact service. |
P1 | High Voltage Protection | Use voltage stabilizer. |
P2 | High Discharge Temperature | Clean filters; refill gas if needed. |
P4 | Inverter Compressor Drive Error | Technical service required immediately. |
EC | Compressor Overload Protection | Turn off AC and allow cooling. |
Kenwood Inverter AC Error Codes
Kenwood error codes are commonly reported by installers and are generally applicable to their inverter AC models.
Code | Meaning | Fix Direction |
|---|---|---|
E0 | Indoor unit EEPROM (Electrically Erasable Programmable Read-Only Memory) error. | Replace the EEPROM chip or control board. |
E1 | Indoor and outdoor units not communicating properly. | Check connections, replace PCB if necessary. |
E2 | Indoor pipe temperature sensor error | Replace the sensor or repair wiring. |
E3 | Indoor fan speed error | Check the fan motor and control board, replace faulty components. |
E4 | Return air temperature sensor error | Replace the sensor or repair wiring. |
E5 | Indoor coil temperature sensor error / Communication breakdown between the indoor and outdoor units. | Replace the sensor or repair wiring. / Power off the AC unit completely for safety, inspect communication cable, secure all wire connections, test cable continuity, remove potential signal interference, check control boards for burnt components, verify stable power supply, reconnect power and test. Professional assistance might be necessary. |
EC | Low refrigerant level | Contact a technician to find and fix leaks, then recharge the refrigerant. |
EE | High water level alarm | Clear the drain pipe, replace the water pump if faulty. |
F0 | Outdoor unit overcurrent protection | Check circuit breaker, wiring, and consult a technician if the issue persists. |
F1 | Outdoor ambient temperature sensor error | Replace the sensor or repair wiring. |
F2 | Outdoor coil temperature sensor error | Replace the sensor or repair wiring. |
F3 | Compressor discharge temperature sensor error | Replace the sensor, check refrigerant levels, and consult a technician for compressor issues. |
F4 | Outdoor EEPROM error | Replace the EEPROM chip or control board. |
F5 | Outdoor fan speed error | Check the fan motor and control board, replace faulty components. |
F6 | Indoor coil temperature sensor error (for units with this sensor) | Replace the sensor or repair wiring. |
P0 | Inverter module IPM (Intelligent Power Module) error | Replace the IPM or repair wiring. |
P1 | High or low voltage protection | Check power supply, voltage stabilizer, and circuit. |
P3 | Low-temperature lockout (outdoor unit) | Wait for the temperature to rise. |
P4 | Compressor drive error | Replace the compressor driver or repair wiring. |
P6 | High-pressure or low-pressure switch open | Check for leaks, replace the switch, or consult a technician for compressor issues. |
P7 | Outdoor IGBT (Insulated Gate Bipolar Transistor) temperature sensor error | Replace the sensor or repair wiring. |
6 | Voltage protection issue | Turn off the AC unit immediately, check household voltage with a multimeter, install a voltage stabilizer, wait until power stabilizes and restart, inspect PCB for burned components, replace damaged protection circuits. |
19 | Outdoor PCB drive error | Turn off the unit and disconnect power, open outdoor unit cover, check outdoor main PCB for damage, examine wires, verify connectors, clean rust/debris, inspect compressor terminals, test IPM functionality, replace damaged components. |
36 | Serial communication error between the indoor and outdoor units | Power off the entire system, check all connections, inspect switching relay, clean carbon deposits, test/replace blown fuses, verify PCB functionality, secure loose wiring, replace damaged communication cables, consult professional for PCB replacement. |
PEL Inverter AC Error Codes
PEL error codes are commonly reported by installers and are generally applicable to their inverter AC models.
Code | Meaning | Fix Direction |
|---|---|---|
FA | Recirculated Sensor Error | Clean the air filter and sensor area, check and secure all wire connections, reset your PEL AC unit, replace the faulty sensor if necessary, contact professional service if error persists. |
P2 | High Voltage Switch Protection | Install a voltage stabilizer, check home circuit breakers and wiring, wait for power to normalize, schedule inspection of internal AC circuitry, contact an electrician. |
P3 | Refrigerant Deficiency Protection | Conduct a leak test, repair identified leaks, recharge system, check all connection points, contact a certified technician. |
P4 | Refrigerant Overload Protection | Remove excess refrigerant (professional help), clean condenser coils, replace air filters, ensure proper clearance around outdoor unit, check and replace faulty expansion valve, schedule regular maintenance. |
P5 | Exhaust Protection | Clear all vents, ensure proper airflow, clean/replace air filters, check refrigerant levels, inspect compressor, test/replace faulty temperature sensors, reset system. |
P6 | Indoor Unit High-Temperature Protection | Clean or replace clogged air filters, remove obstructions from air vents, ensure proper clearance, check and repair fan motor, reset system after it cools down, relocate unit if installed near heat sources. |
P7 | Anti-Freezing Protection | Maintain room temperature above 16°C (60°F), check and refill refrigerant, clear obstructions from air vents, clean or replace air filters, test and replace defective temperature sensors, reset the unit. |
P8 | Overcurrent Protection | Inspect all electrical connections, test compressor for electrical faults, install a voltage stabilizer, check circuit boards for damage, reset circuit breaker, contact a qualified technician. |
E0 | Indoor Unit Overcurrent Protection | Inspect the indoor fan motor, check all wiring connections, test the circuit board, install a surge protector/voltage stabilizer, power cycle the unit, consult a professional technician. |
E1 | Indoor Unit Temperature Sensor Error | Check all sensor wire connections, inspect temperature sensor for visible damage, test sensor with a multimeter, clean sensor area, replace faulty temperature sensor, reset the unit. |
E2 | Outdoor Unit Coil Sensor Error | Inspect the outdoor coil sensor, check all wire connections, test sensor resistance with a multimeter, replace faulty sensor, verify proper communication, reset the system. |
E3 | Indoor Unit Coil Sensor Error | Inspect the sensor for visible damage, check and secure all wire connections, clean connector terminals, test sensor resistance with a multimeter, replace faulty coil sensor, reset the system. |
E4 | Indoor Unit Fan Error | Remove any physical obstruction, lubricate or replace worn-out bearings, check all wire connections, test and replace fan capacitor, install a new fan motor, reset the unit. |
E5 (5E) | Indoor and Outdoor Unit Communication Error | Inspect and reconnect all communication cables, check power supply to both units, test terminals for corrosion/water damage, reset both units, replace faulty control boards, shield communication cables. |
E8 | Display Board and Main Control Panel Communication Error | Check and reseat all connection cables, inspect for bent/corroded connector pins, move electronic devices away, dry any moisture, replace faulty circuit boards, install a power stabilizer. |
F0 | Outdoor Unit Fan Error | Remove debris/objects, test fan motor, replace fan capacitor, check and secure electrical connections, inspect control board for burn marks, replace fan motor. |
F1 | Module Protection Error | Ensure proper ventilation, install a voltage stabilizer, check and secure electrical connections, allow unit to cool down, reset system, contact professional service for module replacement. |
F2 | Power Factor Correction (PFC) Board Error | Reset the unit, check for loose connections, inspect board for visible damage/burnt components, replace faulty capacitors, install a voltage stabilizer, replace entire PFC board. |
F3 | Compressor Out of Step Error | Install a voltage stabilizer, check refrigerant pressures, inspect inverter control board, test electrical connections to compressor, replace compressor, reset the system. |
F4 | Exhaust Sensor Error | Check all sensor connections for secure attachment, inspect wiring, test sensor resistance with a multimeter, replace exhaust sensor, reset the AC unit, contact a certified technician. |
F5 | Compressor Top Head Sensor Error | Check all sensor wire connections, inspect sensor for visible damage, clean corrosion from sensor terminals, test sensor resistance with a multimeter, replace faulty sensor, reset the unit. |
F6 | Outdoor Unit Temperature Sensor Error | Check sensor wire connections, inspect sensor for visible damage, test sensor resistance with a multimeter, clean corrosion from sensor terminals, replace faulty temperature sensor, reset the system. |
F7 | Overvoltage Protection (OVP) or Undervoltage Protection (UVP) Error | Install a dedicated voltage stabilizer, use a surge protector, avoid connecting other high-power devices on the same circuit, check home wiring, contact electricity provider, consider a whole-home power conditioner. |
F8 | Outdoor Unit Control Panel and Module Panel Communication Error | Check and secure all connection cables, inspect circuit boards for visible damage, move potential interference sources away, power cycle the system, replace damaged communication modules, update control firmware. |
F9 | Outdoor EEPROM Error | Reset the system, update the firmware, replace the outdoor unit PCB, install a surge protector, contact professional service for EEPROM reprogramming. |
Running an AC on solar or UPS
Running an inverter AC on a solar power system or UPS requires careful consideration to avoid error codes related to power quality and voltage. Inverter ACs are sensitive to unstable power.
- Stable Voltage: Codes like Gree's "Flash 11 times (Heat indicator)" (DC bus voltage is too high), "Flash 21 times (Heat indicator)" (DC bus voltage is too low), Kenwood's "P1" (High or low voltage protection), and PEL's "P2" (High Voltage Switch Protection) or "F7" (Overvoltage Protection (OVP) or Undervoltage Protection (UVP) Error) indicate voltage issues. Ensure your solar inverter or UPS provides a stable output voltage within the AC's specified operating range.
- Power Quality: PFC (Power Factor Correction) errors, such as Gree's "Flash 6 times (Heat indicator)" or PEL's "F2", can arise from poor power grid quality or issues with the solar/UPS output. A high-quality solar inverter or UPS with good power factor correction capabilities is essential.
- Surge Protection: Voltage fluctuations and surges are common in grid-tied or hybrid solar systems, especially during grid transitions or generator startup. Installing a dedicated voltage stabilizer or surge protector can prevent errors like Kenwood's "6" (Voltage protection issue) and protect the AC's sensitive electronics.
- Capacity Matching: Ensure your solar system or UPS can handle the AC's starting and running current. Undersized systems can lead to overload protection errors (e.g., Gree's "Flash 5 times (Cool indicator)" for AC overcurrent protection, PEL's "P8" for Overcurrent Protection).
Safety
Working with air conditioning units involves significant electrical and mechanical hazards. Always prioritize safety.
- Electrical Hazards: Always turn off the AC unit at the main circuit breaker and ensure it is completely de-energized before attempting any inspection or troubleshooting. Capacitors within the unit, especially in the outdoor unit, can store dangerous electrical charges even after power is disconnected. Never probe electrical components without proper insulated tools and knowledge.
- Moving Parts: Never touch fan blades or other moving parts while the unit is powered on.
- Refrigerant: Refrigerant systems are under high pressure and contain chemicals that can cause severe frostbite or chemical burns if released. Only qualified technicians should handle refrigerant lines, leaks, or recharges.
- Opening Units: Opening an AC unit yourself, especially the outdoor unit, can void the warranty and expose you to dangerous components.
When to call a technician instead
While some basic troubleshooting can be done by you, many error codes indicate problems that require professional expertise. You should call a qualified technician if:
- The error code persists after basic troubleshooting steps like power cycling and cleaning.
- The error code points to internal component failures such as PCB (Printed Circuit Board) errors, IPM (Intelligent Power Module) faults, or compressor drive issues.
- The problem involves refrigerant leaks, low pressure, or overcharging, as these require specialized tools and training.
- You suspect electrical issues beyond simple loose connections, such as unstable voltage, wiring damage, or internal circuit board damage.
- The issue involves complex communication errors between indoor and outdoor units that are not resolved by checking visible connections.
- You are uncomfortable or unsure about any troubleshooting step. Ignoring error codes or attempting repairs without proper knowledge can cause permanent damage to your AC unit and create safety hazards. Opening a unit yourself can void the warranty.
Frequently asked questions
Why do AC error codes differ between brands?
Error codes are specific to each manufacturer and often vary even between different series within the same brand. An 'E5' code on one brand may mean something entirely different on another, or even on a different model from the same manufacturer.
What does an 'E5' code mean on an inverter AC?
The meaning of 'E5' varies significantly by brand. For Gree (Split Type & Floor Standing), it indicates IPM protection. For Orient, it means Indoor & Outdoor Unit Communication Error. For Kenwood, it can mean Indoor coil temperature sensor error or communication breakdown. For Dawlance, it can mean Outdoor Fan Motor Error or Indoor & Outdoor Unit Communication Error. For PEL, it means Indoor and Outdoor Unit Communication Error. Always check your specific brand and model.
Can I fix AC error codes myself?
Some basic issues like blocked filters, obstructions, or loose connections can be addressed by you. However, many codes indicate internal component failures, refrigerant issues, or complex electrical problems that require a qualified technician with specialized tools and knowledge.
Is it safe to troubleshoot AC errors?
Always turn off and disconnect power to your AC unit at the main breaker before attempting any inspection or troubleshooting. Internal components, especially capacitors, can hold dangerous electrical charges even after the unit is turned off. Never probe electrical parts without proper insulated tools and knowledge.
What does 'PFC Protection Error' mean?
PFC (Power Factor Correction) errors, such as F2 on PEL units or Flash 6 times (Heat indicator) on Gree units, typically indicate issues with the quality of the power supply or the AC's internal power management. This can be due to unstable voltage, power grid fluctuations, or internal component damage on the PFC board.
References
- Gree Mini After-sales Service Manual — accessed 23 August 2026
- Orient.com.pk Blog Post — accessed 23 August 2026
- Bijlibazar.com Dawlance Error Codes — accessed 23 August 2026
- Maqsoodandsons.com Dawlance Error Codes — accessed 23 August 2026
- Aysonline.pk Kenwood Error Codes — accessed 23 August 2026
- Electrafix.pk Kenwood Error Codes — accessed 23 August 2026
- Electrafix.pk PEL Error Codes — accessed 23 August 2026
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