Onida AC Error Codes – Problems and How To Solve Them

Onida, which was once known as Mirc electronics, started its journey in 1981. What was then a way to manufacture television sets, turned out to become a TV, air conditioner, washing machines, microwave oven, mobile phones, projector systems, led lights, and theater system manufacturer and distributor.

Today Onida is considered to be one of the top brands in India and has won the trust of millions of consumers around the world. Over recent years Onida has been working on launching innovative products that can ensure an effective and efficient working process. Offering its consumers the best of technology.

When facing an error code we suggest you grab a pen and paper to note down the code rather than pressing various buttons on your Onida ac. This way you will not risk damaging your appliance any further and will be able to find out the exact issue using the common error code list for Onida ac error codes listed below. Once you nail down the issue you can easily call in a professional, or fix the issue yourself.

Codes Table

The meaning of error codes as shown in below

Error CodesMeaning
E1High pressure protection of compressor
E2Indoor anti-frozen protection
E3Low pressure protection of compressor
E4Discharge temp. protection of compressor
E5Compressor overload protection
E6Transmit malfunction
E7Modes conflict
F0Indoor environment temp. sensor mal-function
F1Indoor pan tube inlet tube temp. sensor malfunction
F2Indoor pan tube middle temp. sensor malfunction
F3Indoor pane tube outlet tube temp. sensor malfunction
F4Outdoor environment temp. sensor malfunction
F5Outdoor pan tube inlet tube temp. sensor malfunction
F6Outdoor pan tube middle temp. sensor malfunction
F7Outdoor pan tube outlet tube temp. sensor malfunction
F8Discharge temp. sensor 1 (rated frequency) malfunction
F9Discharge temp. sensor 2 (digital) malfunction
FAGreasy temp. temp. sensor 1 (rated frequency) malfunction
FbGreasy temp. temp. sensor 2 (digital) malfunction
FCHigh pressure sensor malfunction
FdLow pressure sensor malfunction

Remote Control

Onida Air Conditioner Remote Control
Onida Air Conditioner Remote Control



Malfunction of connector jumper

Troubleshooting: Check if the connector jumper contacts properly. If the PCB is to be replaced, please take off the old for the new PCB.


Malfunction of indoor ambient temperature sensor

Troubleshooting: Check if indoor room temperature sensor is connected properly.


Malfunction of evaporator temperature sensor

Troubleshooting: Check if the evaporator temperature is connected properly.

The unit does not operate

Troubleshooting: The unit does not operate if it is turned on immediately after being turned off. This is to protect the unit. You are expected to wait for about 3 minutes.

Odours are emitted


  • Some odours may be emitted from the indoor unit. This is the result of room smells (such as furniture, tobacco, etc.) which have been taken into the air conditioner.
  • Consult authorized service center for cleaning if the odours still exist.

Water flowing noise

Troubleshooting: The swishing noise like water flowing is the sound of refrigerant flowing inside the unit.

Mist is emitted in COOL mode

Troubleshooting: During cooling operation, a thin mist may be seen emitted from the indoor unit due to high room temperature and humidity. After a period of time, the mist will disappear with the decrease of room temperature and humidity.

Cracking noise

Troubleshooting: This is the sound of friction caused by expansion and/or contraction of panel or other parts due to the change of temperature.

The unit can not be started up


  • Is the power cut off?
  • Is the power plug loose? (If applicable)
  • Is the circuit protection device tripped off?
  • Is voltage higher or lower? (Tested by professionals)
  • Is the TIMER correctly used?

Cooling/Heating effect is poor


  • Is temperature setting appropriate?
  • Is the inlet or outlet blocked?
  • Is the filter dirty?
  • Is the window or the door open?
  • Is low fan speed set?
  • Are there heat sources in the room?

Remote controller is not available


  • Check if there is magnetic or electrical interference near the unit that may affecting operation of the controller. In this case, pull the plug out and reinsert it.
  • Is the remote controller within its operating range or obstructed? Check the condition of the batteries and replace them if necessary.
  • Check if the remote controller is damaged.

Water leakage of indoor unit


  • The humidity is high.
  • Condensate overflows.
  • Drain hose is loose.

Water leakage of outdoor unit


  • During cooling operation, condensate is generated around the pipes and connection joints.
  • During defrosting operation, the thaw water flows out.
  • During heating operation, the water on the heat exchanger drips out.

Noise from indoor unit


  • The noise emitted when the fan or compressor relay is switching on or off.
  • When the defrosting operation is started or stopped, there is a sound of refrigerant flowing in the reverse direction.

Indoor unit cannot deliver air

Troubleshooting: 4 In DRY mode, the indoor fan will stop blowing air for 3-12 minutes in order to avoid condensate being vaporised again.

Moisture on air outlet vent

Troubleshooting: If unit is running under the high humidity for a long time, the moisture will be condensed on the air outlet grill and drip off.

Manual Pdf

Onida Split Air Conditioners Manual

Onida Multi Split Air Conditioner Manual PDF

*If you can't find the code you're looking for on our site, please let us know, and we'll update our database as soon as possible.

45 thoughts on “Onida AC Error Codes – Problems and How To Solve Them”

  1. My onida AC showing CL in the display while switch off. Even after cleaning the CL error still showing. Please suggest me how to remove the CL error. The cooling also not good.


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