Lloyd AC Error Codes & Troubleshooting

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lloyd ac error codes

Lloyd air conditioners use built-in error codes to warn users when something goes wrong. Understanding Lloyd AC error codes helps you spot the exact fault quickly, whether it’s a sensor issue, fan fault, or compressor problem. Not every code means the same thing, though.

Error codes point to actual component failures, while protection codes appear when the AC shuts down parts of itself to prevent damage, such as during overheating or low refrigerant. This guide covers error codes for both Lloyd Split AC and Lloyd Window AC models sold in India.

Based on official Lloyd user manuals, it helps you diagnose common faults within minutes, so you know what’s wrong before calling a technician.

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Lloyd Inverter Split AC Error Codes & Quick Solutions

Error Codes & MeaningQuick Solutions
EE – Indoor machine EE fault
Indoor LED flashes: 25		Power off for 5 minutes and restart. Call technician if it repeats.
E0 – Outdoor EE fault
Indoor LED flashes: 1		Restart the unit. Persistent fault needs PCB inspection.
E1 – Indoor fan fault
Indoor LED flashes: 26		Check indoor fan for obstruction. Restart AC. Call technician if code stays.
E2 – Indoor fan zero-crossing detection abnormal
Indoor LED flashes: 27		Restart AC after 5 minutes. Call technician if it repeats.
E3 – Indoor coil fault and sensor fault
Indoor LED flashes: 28		Turn off AC, wait, then restart. Sensor may need replacement.
E4 – Indoor ambient temperature sensor fault
Indoor LED flashes: 29		Restart AC. Get sensor checked if error returns.
E5 – Refrigerant leak fault (Optional)
Indoor LED flashes: 30		Do not keep restarting. Call technician to check for gas leak.
E6 – Indoor and outdoor communication fault
Indoor LED flashes: 2		Check wiring between units. Call technician for cable/PCB check.
E9 / EF – WiFi module fault (Optional)
Indoor LED flashes: 3		Restart AC and Wi-Fi router. Reconnect the app if needed.
EH – Humidity sensor fault (Optional)
Indoor LED flashes: 24		Restart AC. Call technician if error persists.
EP – PM2.5 sensor fault (Optional)
Indoor LED flashes: 37		Restart AC. Sensor replacement may be needed.
EU – Voice module communication fault (Optional)
Indoor LED flashes: 38		Restart AC. Call technician if issue continues.
LO/Lb – Low battery indication
Indoor LED flashes: Not applicable		Replace remote batteries.
CL – Filter cleaning reminder (Optional)
Indoor LED flashes: Not applicable		Clean the air filter, then reset as per manual.
go – Self-diagnosis test passed (Optional)
Indoor LED flashes: Not applicable		No fault. Unit is working fine.
ng – Self-diagnosis test failed (Optional)
Indoor LED flashes: Not applicable		Note the blink pattern shown and call a technician.
F1 – Compressor starting abnormal / phase failure
Indoor LED flashes: 4		Turn off AC and call a technician. Do not keep restarting.
F2 – Compressor out-of-step fault
Indoor LED flashes: 5		Switch off and call technician for compressor check.
F3 – IPM module fault
Indoor LED flashes: 6		Turn off AC immediately and call technician.
F4 – Compressor shell roof fault/protection
Indoor LED flashes: 7		Let unit cool down. Check outdoor unit ventilation. Call technician if repeated.
F5 – Discharge temperature sensor fault
Indoor LED flashes: 8		Restart AC. Technician visit needed if it recurs.
F6 – Suction temperature sensor fault (Optional)
Indoor LED flashes: 9		Restart AC. Get sensor tested by technician.
F7 – Outdoor coil temperature sensor fault
Indoor LED flashes: 10		Clean outdoor unit and restart. Call technician if unresolved.
F8 – Outdoor ambient temperature sensor fault
Indoor LED flashes: 11		Restart AC. Sensor replacement may be needed.
F9 – Outdoor DC fan fault (Optional)
Indoor LED flashes: 12		Check outdoor fan for blockage. Call technician if fan doesn’t spin.
P1 – Outdoor machine AC current protection
Indoor LED flashes: 13		Restart AC. Call technician if it trips again.
P2 – Compressor phase current protection
Indoor LED flashes: 14		Switch off and call technician.
P3 – Outdoor unit over-high/over-low AC voltage protection
Indoor LED flashes: 15		Check power supply and stabilizer. Call technician if unresolved.
P3 01 – Low voltage indication/notification
Indoor LED flashes: Not applicable		Install or check voltage stabilizer.
P3 02 – High voltage indication/notification
Indoor LED flashes: Not applicable		Check power supply for voltage spikes. Use a stabilizer.
P4 – DC voltage over-high or over-low protection
Indoor LED flashes: 16		Restart AC. Call technician if it recurs.
P5 – IPM over-high temperature protection
Indoor LED flashes: 17		Let unit cool. Check outdoor unit airflow and ventilation.
P6 – Discharge temperature overheat protection
Indoor LED flashes: 18		Turn off AC. Call technician to check refrigerant and compressor load.
P7 – Cooling indoor coil anti-freezing protection
Indoor LED flashes: 19		Check for ice on the coil. Clean or replace air filter.
P8 – Cooling outdoor coil overheat protection
Indoor LED flashes: 20		Clean outdoor coil and ensure proper airflow.
P9 – Heating indoor coil overheat protection (Optional)
Indoor LED flashes: 21		Restart AC. Call technician if it repeats in heat mode.
PC – Cooling outdoor ambient temperature over-low protection
Indoor LED flashes: 22		Normal in very cold outdoor conditions. Contact technician if persistent.
PH – Heating outdoor ambient temperature over-high protection (Optional)
Indoor LED flashes: 23		Normal in very hot outdoor conditions during heat mode.
PE – Earth fault protection
Indoor LED flashes: Not applicable (Outdoor light flashes: 39)		Check earthing connection immediately. Call an electrician or technician.
L1 – Drive bus voltage over-high protection
Indoor LED flashes: 31		Check power supply. Call technician if it recurs.
L2 – Drive bus voltage over-low protection
Indoor LED flashes: 32		Check power supply and stabilizer. Call technician if unresolved.
L3 – Drive phase current overload fault
Indoor LED flashes: 33		Switch off AC. Call technician for compressor/PCB check.
L4 – Phase current sampling abnormal
Indoor LED flashes: 34		Restart AC. Call technician if it repeats.
Ht – Heat mode indication
Indoor LED flashes: Not applicable		Normal indication. No action needed.
Do – Door open alert
Indoor LED flashes: Not applicable		Close doors and windows properly to seal the room.

Lloyd Fixed-Speed (Non-Inverter) Split AC Error Codes

Error Codes & MeaningQuick Solutions
E1 – Indoor side room temperature sensor fault
Indoor LED flashes: 29		Restart AC after 5 minutes. Call technician if it repeats.
E2 – Indoor side coil temperature sensor fault
Indoor LED flashes: 28		Check for ice on coil. Restart AC. Call technician if unresolved.
E5 / H6 – Indoor side fan motor fault
Indoor LED flashes: 26		Check indoor fan for obstruction. Call technician if fan doesn’t run.
dF – Indoor side defrost protection (cooling)
Indoor LED flashes: 19		Normal during high humidity or low coil temperature. No action needed.
E3 – Outdoor side coil temperature sensor fault (Optional)
Indoor LED flashes: Not applicable		Clean outdoor unit and restart. Call technician if it persists.
HP – Heating indoor coil overheat protection (Optional)
Indoor LED flashes: 21		Restart AC. Call technician if it repeats in heat mode.
HF – Outdoor side defrost protection (heating) (Optional)
Indoor LED flashes: Not applicable		Normal during heat mode in cold weather. No action needed.
Ht – Heat mode indication
Indoor LED flashes: Not applicable		Normal indication. No action needed.
d0 – Door open alert
Indoor LED flashes: Not applicable		Close doors and windows properly to seal the room.

Note: Codes marked (Optional) apply only to selected Lloyd models with those features. Always cross-check with your specific unit’s manual.

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    Lloyd AC Error Code Explanation With Possible Solutions

    lloyd ac

    EE – Indoor machine EE fault (Indoor LED flashes: 25)

    What Causes This Error: This fault happens when the indoor unit’s EEPROM, the memory chip that stores the PCB’s settings, fails to read or write data correctly, often due to a PCB defect or power fluctuation.

    How to Fix The Error:

    • Turn off the AC and power it back on after 5 minutes to reset the memory.
    • If the code returns, call a technician to inspect or replace the indoor PCB.

    E0 – Outdoor EE fault (Indoor LED flashes: 1)

    What Causes This Error: This is the same EEPROM memory fault as EE, but it occurs on the outdoor unit’s PCB instead of the indoor one.

    How to Fix The Error:

    • Restart the AC to see if the fault clears on its own.
    • If it persists, a technician needs to check the outdoor PCB.

    E1 – Indoor fan fault (Indoor LED flashes: 26)

    What Causes This Error: This code appears when the indoor blower fan fails to start or run at the correct speed, usually due to a weak capacitor, worn motor, dust buildup, or loose wiring.

    How to Fix The Error:

    • Check the indoor fan for obstructions and clean any dust buildup.
    • If the fan doesn’t spin freely, call a technician to test the capacitor and motor.

    E2 – Indoor fan zero-crossing detection abnormal (Indoor LED flashes: 27)

    What Causes This Error: The PCB uses a zero-crossing signal to sync fan motor speed control, and this error means the PCB isn’t receiving that signal correctly, often pointing to a motor feedback or PCB issue.

    How to Fix The Error:

    • Restart the AC after 5 minutes to clear a temporary glitch.
    • If the error repeats, have a technician inspect the fan motor and PCB.

    E3 – Indoor coil fault and sensor fault (Indoor LED flashes: 28)

    What Causes This Error: This occurs when the indoor coil temperature sensor is short-circuited or has an open connection, which can happen due to sensor damage, loose wiring, or excess moisture.

    How to Fix The Error:

    • Turn off the AC, wait a few minutes, then restart to see if the error clears.
    • If it stays, the coil sensor likely needs replacement by a technician.

    E4 – Indoor ambient temperature sensor fault (Indoor LED flashes: 29)

    What Causes This Error: The room temperature sensor has failed or lost connection, so the PCB can’t correctly read the room’s temperature.

    How to Fix The Error:

    • Restart the AC to check if the sensor reconnects properly.
    • Get the sensor tested and replaced if the error returns.

    E5 – Refrigerant leak fault (Optional) (Indoor LED flashes: 30)

    What Causes This Error: This fault triggers when the system detects refrigerant gas has dropped below the required level, usually from a leak in the copper pipes, joints, or coils.

    How to Fix The Error:

    • Do not keep restarting the AC repeatedly, as running with low gas can damage the compressor.
    • Call a technician to locate and repair the leak before refilling refrigerant.

    E6 – Indoor and outdoor communication fault (Indoor LED flashes: 2)

    What Causes This Error: This means the signal wire connecting the indoor and outdoor units isn’t transmitting properly, often due to loose wiring, a damaged cable, or a faulty PCB on either unit.

    How to Fix The Error:

    • Check that the wiring between the indoor and outdoor units is properly connected.
    • Call a technician to test communication voltage and repair or replace the faulty PCB.

    E9 / EF – WiFi module fault (Optional) (Indoor LED flashes: 3)

    What Causes This Error: The AC’s built-in WiFi module has lost connection or failed to pair, which can happen due to router issues, weak signal, or a module fault.

    How to Fix The Error:

    • Restart both the AC and your WiFi router, then try pairing again through the app.
    • If reconnecting fails repeatedly, contact a technician to check the WiFi module.

    EH – Humidity sensor fault (Optional) (Indoor LED flashes: 24)

    What Causes This Error: The humidity sensor used for air quality monitoring has failed or lost its connection to the PCB.

    How to Fix The Error:

    • Restart the AC to see if the sensor reconnects.
    • Call a technician if the error persists, as the sensor may need replacement.

    EP – PM2.5 sensor fault (Optional) (Indoor LED flashes: 37)

    What Causes This Error: The PM2.5 air quality sensor, which detects fine dust particles in the room, has malfunctioned or disconnected.

    How to Fix The Error:

    • Restart the AC and check the sensor connection if you can access it safely.
    • If the fault continues, the sensor likely needs professional replacement.

    EU – Voice module communication fault (Optional) (Indoor LED flashes: 38)

    What Causes This Error: The voice control module (used for Hello Lloyd voice commands) has failed to communicate with the main PCB.

    How to Fix The Error:

    • Restart the AC to reset the communication link.
    • Call a technician if the fault continues, as the voice module or its wiring may need repair.

    LO/Lb – Low battery indication (Indoor LED flashes: Not applicable)

    What Causes This Error: This message shows up on the remote handset itself, warning that the remote’s batteries are running low and can no longer send a strong signal to the AC.

    How to Fix The Error:

    • Replace the remote batteries with a fresh pair.
    • If the display doesn’t clear after replacing batteries, check that they’re inserted with correct polarity.

    CL – Filter cleaning reminder (Optional) (Indoor LED flashes: Not applicable)

    What Causes This Error: This is not a fault but a maintenance reminder that appears after a set number of running hours, prompting you to clean the air filter for better airflow and efficiency.

    How to Fix The Error:

    • Remove the air filter, clean it with water, and let it dry fully before reinstalling.
    • Reset the reminder as per your model’s instructions (usually by pressing the TURBO button a few times).

    go – Self-diagnosis test passed (Optional) (Indoor LED flashes: Not applicable)

    What Causes This Error: This code appears when you run the Intelligent Diagnosis feature and the AC completes its internal self-check without finding any faults.

    How to Fix The Error:

    • No fix needed. The AC is working normally.

    ng – Self-diagnosis test failed (Optional) (Indoor LED flashes: Not applicable)

    What Causes This Error: This appears when the Intelligent Diagnosis self-test finds a fault in the system, and the indoor unit will then blink the Sleep LED to show the specific error code.

    How to Fix The Error:

    • Note the LED blink pattern shown after the ng code appears.
    • Share this pattern with a technician so they can identify the exact fault.

    F1 – Compressor starting abnormal / phase failure (Indoor LED flashes: 4)

    What Causes This Error: The compressor fails to start correctly, often due to phase failure, reversed wiring, low voltage, or a weak starting capacitor.

    How to Fix The Error:

    • Turn off the AC and avoid repeated restarts, as this can damage the compressor further.
    • Call a technician to check the wiring, voltage supply, and capacitor.

    F2 – Compressor out-of-step fault (Indoor LED flashes: 5)

    What Causes This Error: This happens when the compressor motor loses sync with the PCB’s control signal, often due to voltage fluctuation, a mechanical compressor issue, or a PCB fault.

    How to Fix The Error:

    • Switch off the AC and check your power supply for stability.
    • Call a technician to inspect the compressor and PCB if the fault continues.

    F3 – IPM module fault (Indoor LED flashes: 6)

    What Causes This Error: The IPM (Intelligent Power Module), which controls power to the compressor in inverter ACs, has overheated or failed, often due to dry thermal paste, a loose heat sink, or a PCB defect.

    How to Fix The Error:

    • Turn off the AC immediately to prevent further damage.
    • Call a technician to inspect the IPM module, thermal paste, and heat sink connection.

    F4 – Compressor shell roof fault/protection (Indoor LED flashes: 7)

    What Causes This Error: This protection trips when the compressor’s outer shell overheats, usually because of poor ventilation, high ambient temperature, or prolonged heavy load.

    How to Fix The Error:

    • Let the unit cool down and check that the outdoor unit has proper airflow and shade.
    • Call a technician if the fault keeps returning after cooling.

    F5 – Discharge temperature sensor fault (Indoor LED flashes: 8)

    What Causes This Error: The sensor that monitors the compressor’s hot discharge gas temperature has failed or lost connection, so the PCB can’t regulate compressor speed safely.

    How to Fix The Error:

    • Restart the AC to see if the sensor reconnects.
    • Call a technician for sensor testing and replacement if the error returns.

    F6 – Suction temperature sensor fault (Optional) (Indoor LED flashes: 9)

    What Causes This Error: The suction line sensor, which measures the refrigerant gas temperature entering the compressor, has malfunctioned or disconnected.

    How to Fix The Error:

    • Restart the AC after a few minutes to check if the error clears.
    • Get the sensor tested and replaced by a technician if it persists.

    F7 – Outdoor coil temperature sensor fault (Indoor LED flashes: 10)

    What Causes This Error: The sensor on the outdoor condenser coil has failed, often due to sensor damage, corrosion, or loose wiring, preventing accurate temperature readings.

    How to Fix The Error:

    • Clean the outdoor unit and check for loose sensor wiring, then restart the AC.
    • Call a technician if the fault continues, as the sensor may need replacement.

    F8 – Outdoor ambient temperature sensor fault (Indoor LED flashes: 11)

    What Causes This Error: The sensor that reads outdoor air temperature has malfunctioned, which affects how the PCB controls fan speed and compressor operation.

    How to Fix The Error:

    • Restart the AC to check if the sensor starts working again.
    • Call a technician for sensor replacement if the error keeps appearing.

    F9 – Outdoor DC fan fault (Optional) (Indoor LED flashes: 12)

    What Causes This Error: The outdoor unit’s DC fan motor has failed to start or run at the correct speed, often due to a jammed motor, damaged wiring, or a driver circuit fault on the PCB.

    How to Fix The Error:

    • Check the outdoor fan for physical blockages like leaves or debris.
    • Call a technician to test the fan motor and wiring if it still doesn’t spin.

    P1 – Outdoor machine AC current protection (Indoor LED flashes: 13)

    What Causes This Error: This protection trips when the outdoor unit draws more electrical current than it should, often due to a compressor overload, dirty condenser coil, or wiring fault.

    How to Fix The Error:

    • Turn off the AC and check that the outdoor unit and condenser coil are clean and well-ventilated.
    • Call a technician to check current draw and inspect the compressor and wiring if the fault repeats.

    P2 – Compressor phase current protection (Indoor LED flashes: 14)

    What Causes This Error: The compressor is pulling abnormal current on one of its phases, which usually points to a wiring fault, weak capacitor, or an internal compressor problem.

    How to Fix The Error:

    • Switch off the AC to prevent compressor damage.
    • Call a technician to test the capacitor and compressor wiring.

    P3 – Outdoor unit over-high/over-low AC voltage protection (Indoor LED flashes: 15)

    What Causes This Error: The outdoor unit has detected voltage outside its safe operating range, which can come from an unstable power supply, faulty stabilizer, or local grid fluctuations.

    How to Fix The Error:

    • Check your power supply and stabilizer for correct voltage output.
    • Call a technician if the AC has no stabilizer or if voltage issues continue, since a stabilizer is strongly recommended in areas with fluctuating power.

    P3 01 – Low voltage indication/notification (Indoor LED flashes: Not applicable)

    What Causes This Error: This sub-code specifically confirms that the voltage supplied to the AC has dropped below the safe operating range.

    How to Fix The Error:

    • Install or check a voltage stabilizer rated for your AC’s tonnage.
    • Avoid running the AC continuously in low voltage, as this stresses the compressor.

    P3 02 – High voltage indication/notification (Indoor LED flashes: Not applicable)

    What Causes This Error: This sub-code confirms the voltage supplied to the AC has risen above the safe operating range, often from grid spikes or an unstable connection.

    How to Fix The Error:

    • Check your power supply for voltage spikes and use a stabilizer or surge protector.
    • Call an electrician if high voltage is a recurring issue in your home.

    P4 – DC voltage over-high or over-low protection (Indoor LED flashes: 16)

    What Causes This Error: This relates to the internal DC bus voltage inside the inverter PCB going outside safe limits, often triggered by unstable AC input power or a PCB component fault.

    How to Fix The Error:

    • Restart the AC and check your main power supply for stability.
    • Call a technician to inspect the PCB if the error keeps appearing.

    P5 – IPM over-high temperature protection (Indoor LED flashes: 17)

    What Causes This Error: The IPM (Intelligent Power Module) has overheated, usually because of poor outdoor unit ventilation, dust buildup, or a failing heat sink.

    How to Fix The Error:

    • Let the unit cool down and check that the outdoor unit has clear airflow around it.
    • Call a technician to inspect the IPM module and heat sink if the fault continues.

    P6 – Discharge temperature overheat protection (Indoor LED flashes: 18)

    What Causes This Error: The compressor’s discharge (outlet) gas temperature has exceeded safe limits, often due to low refrigerant, a blocked system, or excessive compressor load.

    How to Fix The Error:

    • Turn off the AC and avoid restarting repeatedly.
    • Call a technician to check refrigerant levels and inspect for blockages in the system.

    P7 – Cooling indoor coil anti-freezing protection (Indoor LED flashes: 19)

    What Causes This Error: This protection activates when the indoor coil temperature drops too low and risks forming ice, usually caused by a dirty air filter, low airflow, or low refrigerant.

    How to Fix The Error:

    • Turn off the AC and let any ice on the coil melt completely before restarting.
    • Clean the air filter and check for airflow blockages; call a technician if ice keeps forming.

    P8 – Cooling outdoor coil overheat protection (Indoor LED flashes: 20)

    What Causes This Error: The outdoor condenser coil has overheated because it can’t release heat properly, often from dirt buildup, blocked airflow, or a weak outdoor fan.

    How to Fix The Error:

    • Clean the outdoor coil and remove any obstructions around the outdoor unit.
    • Call a technician to check the outdoor fan if the coil keeps overheating.

    P9 – Heating indoor coil overheat protection (Optional) (Indoor LED flashes: 21)

    What Causes This Error: In heat mode, the indoor coil has become too hot, which can happen due to restricted airflow or a sensor misreading.

    How to Fix The Error:

    • Restart the AC and make sure the air filter and vents are clean and unobstructed.
    • Call a technician if the fault repeats during heat mode operation.

    PC – Cooling outdoor ambient temperature over-low protection (Indoor LED flashes: 22)

    What Causes This Error: This activates when the outdoor temperature is too low for the AC to run safely in cooling mode, which is a normal protective response in cold weather rather than a fault.

    How to Fix The Error:

    • This is usually expected behavior in very cold outdoor conditions, so no repair is typically needed.
    • Contact a technician only if the error appears during normal, moderate weather.

    PH – Heating outdoor ambient temperature over-high protection (Optional) (Indoor LED flashes: 23)

    What Causes This Error: This triggers when the outdoor temperature is too high for the AC to safely run in heat mode, which is a normal protective response rather than a fault.

    How to Fix The Error:

    • This usually needs no action, since it protects the unit during unusually warm weather in heat mode.
    • Call a technician if the error appears in normal or cool outdoor conditions.

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    PE – Earth fault protection (Indoor LED flashes: Not applicable, Outdoor light flashes: 39)

    What Causes This Error: The AC has detected a problem with its earthing (grounding) connection, which is a serious electrical safety issue that can result from poor installation or damaged wiring.

    How to Fix The Error:

    • Turn off the AC immediately and do not use it until the earthing is checked.
    • Call an electrician or technician right away to verify and fix the earth connection, since faulty earthing is a shock hazard.

    L1 – Drive bus voltage over-high protection (Indoor LED flashes: 31)

    What Causes This Error: The internal drive bus voltage inside the inverter PCB has risen above its safe limit, usually because of unstable or high input power supply reaching the outdoor unit.

    How to Fix The Error:

    • Check your power supply and stabilizer for voltage spikes.
    • Call a technician to inspect the PCB if the error keeps appearing.

    L2 – Drive bus voltage over-low protection (Indoor LED flashes: 32)

    What Causes This Error: The drive bus voltage has dropped too low, typically from an unstable power supply, weak stabilizer output, or low incoming voltage.

    How to Fix The Error:

    • Check your power supply and stabilizer for correct voltage output.
    • Call a technician if voltage issues continue, as this can strain the compressor over time.

    L3 – Drive phase current overload fault (Indoor LED flashes: 33)

    What Causes This Error: The compressor’s drive circuit is drawing more current than it should on one phase, often pointing to compressor overload, wiring faults, or a failing PCB component.

    How to Fix The Error:

    • Switch off the AC to prevent further strain on the compressor.
    • Call a technician to check the compressor load and PCB/wiring condition.

    L4 – Phase current sampling abnormal (Indoor LED flashes: 34)

    What Causes This Error: The PCB’s current-sensing circuit is reading abnormal or inconsistent values, which usually indicates a fault in the sensing component or PCB itself.

    How to Fix The Error:

    • Restart the AC to see if the fault clears.
    • Call a technician to inspect the PCB’s current sampling circuit if the error repeats.

    Ht – Heat mode indication (Indoor LED flashes: Not applicable)

    What Causes This Error: This isn’t a fault. It simply shows on the display to confirm the AC is currently running in Heat mode.

    How to Fix The Error:

    • No fix needed. This is a normal operating indication, not an error.

    Do – Door open alert (Indoor LED flashes: Not applicable)

    What Causes This Error: The AC’s door open detection feature senses that room temperature keeps rising continuously despite the compressor running, and interprets this as a door or window being left open, causing cooling loss.

    How to Fix The Error:

    • Check that all doors and windows in the room are properly closed.
    • If the room is sealed but the alert still appears, call a technician to check the sensor or refrigerant level, since poor cooling can trigger a false door-open reading.

    Lloyd Fixed-Speed (Non-Inverter) Split AC Error Codes

    E1 – Indoor side room temperature sensor fault (Indoor LED flashes: 29)

    What Causes This Error: The room temperature sensor has short-circuited or lost connection, so the PCB can no longer accurately read the room’s temperature to control the compressor.

    How to Fix The Error:

    • Restart the AC after 5 minutes to see if the sensor reconnects.
    • Call a technician to test and replace the sensor if the error keeps returning.

    E2 – Indoor side coil temperature sensor fault (Indoor LED flashes: 28)

    What Causes This Error: The evaporator coil sensor has failed or come loose, which can happen due to sensor wear, moisture damage, or a disconnected wire, and prevents the PCB from monitoring coil temperature properly.

    How to Fix The Error:

    • Check for ice buildup on the coil, then turn off the AC and let it melt fully before restarting.
    • Call a technician to inspect or replace the sensor if the fault does not clear.

    E5 / H6 – Indoor side fan motor fault (Indoor LED flashes: 26)

    What Causes This Error: The indoor blower fan has failed to start or run correctly, commonly due to a weak capacitor, worn motor bearings, dust buildup, or loose wiring.

    How to Fix The Error:

    • Check the blower for obstructions and clean any dust from the fan area.
    • Call a technician to test the capacitor and motor if the fan doesn’t run smoothly.

    dF – Indoor side defrost protection (cooling) (Indoor LED flashes: 19)

    What Causes This Error: This isn’t a fault. It appears when the indoor coil temperature is very low along with high humidity, so the AC automatically runs a defrost cycle to clear frost from the coil.

    How to Fix The Error:

    • No action needed. This clears on its own once defrosting finishes.
    • If dF stays on for an unusually long time, check the air filter and airflow, and call a technician if it doesn’t resolve.

    E3 – Outdoor side coil temperature sensor fault (Optional) (Indoor LED flashes: Not applicable)

    What Causes This Error: The outdoor condenser coil sensor has malfunctioned or disconnected, often due to corrosion, physical damage, or loose wiring at the outdoor unit.

    How to Fix The Error:

    • Clean the outdoor unit and check for loose sensor connections, then restart the AC.
    • Call a technician to test and replace the sensor if the fault persists.

    HP – Heating indoor coil overheat protection (Optional) (Indoor LED flashes: 21)

    What Causes This Error: In heat mode, the indoor coil has become too hot, usually from restricted airflow, a dirty filter, or blocked vents that trap heat inside the indoor unit.

    How to Fix The Error:

    • Clean the air filter and make sure vents and airflow paths are unobstructed, then restart the AC.
    • Call a technician if the fault keeps appearing during heat mode operation.

    HF – Outdoor side defrost protection (heating) (Optional) (Indoor LED flashes: Not applicable)

    What Causes This Error: This isn’t a fault. It shows when frost builds up on the outdoor coil during heat mode in cold weather, and the AC runs a defrost cycle to clear the heat exchanger.

    How to Fix The Error:

    • No action needed. This clears automatically once the defrost cycle completes.
    • Call a technician only if it appears repeatedly in mild weather or heating performance drops.

    Ht – Heat mode indication (Indoor LED flashes: Not applicable)

    What Causes This Error: This isn’t a fault. It’s a normal display indication confirming the AC is currently operating in Heat mode.

    How to Fix The Error:

    • No fix needed. This is standard operating information, not an error.

    d0 – Door open alert (Indoor LED flashes: Not applicable)

    What Causes This Error: The AC detects that room temperature keeps rising continuously even while running, and interprets this pattern as an open door or window causing cooling loss.

    How to Fix The Error:

    • Make sure all doors and windows in the room are properly closed and sealed.
    • If the alert continues in a closed room, call a technician to check the sensor and refrigerant level, since poor cooling can also trigger this alert.

    Troubleshoot for Most Common Lloyd AC Problems

    lloyd ac

    Air conditioner doesn’t operate

    • Power failure
    • Wait for the electricity supply to come back on.
    • Power plug is loose
    • Push the power plug firmly back into the socket.
    • Circuit breaker has tripped or fuse has blown
    • Reset the breaker or swap in a new fuse. Call a qualified technician if the problem keeps happening.
    • Wiring malfunction
    • Get an authorized service technician to inspect and fix the wiring.
    • Unit restarted immediately after stopping
    • Give it about 3 minutes before turning it back on. This delay is a normal compressor safety feature, not a fault.
    • Incorrect function setting on the remote controller
    • Reset the function or pick the correct operating mode on the remote.

    For your expired warranty Lloyd AC & other appliance repair contact Lloyd AC service centre in Kolkata for sameday doorstep repair service.

    Indoor unit cannot receive remote controller signal / Remote controller doesn’t work

    • Static electricity or unstable voltage interference
    • Unplug the AC, wait about 3 minutes, plug it back in, and turn it on again.
    • Remote controller is out of operating range
    • Stay within 8 metres of the indoor unit when using the remote.
    • Obstacles between the remote and indoor unit
    • Clear away anything blocking the signal path.
    • Remote controller is not aimed at the indoor unit receiver
    • Point the remote straight at the indoor unit’s receiving window.
    • Weak batteries or dim/flickering display
    • Replace the batteries in the remote controller.
    • No display on the remote controller
    • Check if the remote is damaged, and replace it if needed.
    • Fluorescent lamp interference
    • Move closer to the indoor unit when using the remote.
    • Switch off the fluorescent lamp nearby and try again.

    No air is emitted from the indoor unit

    • Indoor air inlet or outlet is blocked
    • Clear away any obstruction blocking the airflow.
    • Heating mode has reached the set temperature
    • The indoor fan switches off on its own once the set temperature is reached. This is normal.
    • Heating mode has just started
    • Give it a few minutes. The fan waits briefly before starting, so it doesn’t blow cold air at first.

    Mist comes out from the indoor unit air outlet

    • High indoor temperature and humidity
    • This is normal. The misty air clears up once the room’s temperature and humidity level go down.

    Set temperature cannot be adjusted

    • Unit is operating in Auto mode
    • The temperature can’t be changed while in Auto mode. Switch to Cool, Heat, or Dry mode instead.
    • Selected temperature is outside the allowable range
    • Keep the set temperature between 16°C and 30°C.

    Cooling or heating performance is poor

    • Low supply voltage
    • Wait for the voltage to return to normal levels.
    • Dirty air filter
    • Clean the air filter to restore proper airflow.
    • Incorrect temperature setting
    • Adjust the temperature to a suitable setting.
    • Doors or windows are open
    • Close all doors and windows to keep the cool air in.

    Unpleasant odours are emitted

    • Odours from furniture, cigarettes, cooking, etc.
    • Remove the source of the odour.
    • Clean the air filter to get rid of trapped smells.

    Air conditioner operates abnormally

    • Electrical interference (thunder, wireless devices, etc.)
    • Disconnect the power supply, reconnect it, and restart the air conditioner.

    Outdoor unit produces vapor

    • Heating mode defrost operation
    • This is normal. It happens automatically during the defrost cycle in heat mode.

    Water flowing sound

    • Sound heard immediately after turning the AC on or off
    • This is just the sound of refrigerant flowing through the system. It’s completely normal.

    Cracking noise

    • Noise heard after starting or stopping the AC
    • This happens when plastic parts expand or contract with temperature changes. It’s a normal sound, not a fault.

    When to Call Lloyd Service Centre for Technician Visit?

    • Circuit breaker keeps tripping after reset – This usually means there is a short circuit, compressor overload, or damaged wiring inside the unit, which needs a trained technician to diagnose safely.
    • Burning smell or smoke from the indoor or outdoor unit – A burning plastic or electrical smell points to burnt wiring, a damaged PCB, or a failing capacitor, and can be a fire risk if ignored.
    • Refrigerant leak or gas shortage (E5 error) – Refrigerant leaks require specialized tools and trained handling to locate and seal, so this is not a DIY repair.
    • Compressor not starting or repeatedly tripping (F1, F2, P1, P2 codes) – These faults often mean phase failure, wiring issues, or an internal compressor fault that needs expert testing.
    • Indoor-outdoor communication failure (E6, E8 codes) – This involves testing wiring and PCB communication voltage, which requires a multimeter and trained diagnosis.
    • IPM module or PCB-related errors (F3, P5 codes) – These faults relate to the compressor’s internal power control components and need technician-level repair or replacement.
    • Persistent sensor faults (E1, E2, E3, E4, F5-F9) – If restarting the AC doesn’t clear these sensor errors, the sensor itself likely needs testing and replacement by a professional.
    • Continuous water leakage from the indoor unit – Constant or excessive water leaks can point to a blocked drain, frozen coil, or damaged drain pan, and may cause mold or damage if left unaddressed.
    • Ice forming on the indoor or outdoor coil – This is often a sign of low refrigerant, poor airflow, or a sensor fault, and running the AC without fixing it can damage the compressor.
    • Earth fault protection error (PE code) – A faulty earthing connection is an electrical safety hazard and should be checked by a technician or electrician right away.

    Lloyd AC error codes help you catch problems early, before they turn into major repairs. Start with simple fixes like a power reset, filter cleaning, or checking airflow.

    Avoid repeated restarts if compressor, PCB, or voltage codes appear. If the same error returns, call Urban Service Plaza for expert diagnosis and repair.

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