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How to Solve E4 Error on Your Dawlance Inverter AC?

By June 14, 2024July 16th, 2024AC Services, Dawlance, Error & Solutions

Solving the E4 Error on Your Dawlance Inverter AC

Encountering an E4 error code on your Dawlance inverter air conditioner? This code indicates an issue with the outdoor ambient temperature sensor, an essential component that monitors the temperature outside to ensure efficient cooling and heating. Here’s a detailed guide to diagnosing and fixing the E4 error. If you need professional assistance, remember that offers expert AC repair services to get your unit back in top shape.

Understanding the E4 Error Code

The E4 error code signals a problem with the outdoor ambient temperature sensor. This sensor measures the outside temperature to help the AC adjust its performance accordingly. A malfunctioning sensor can lead to improper cooling or heating and may cause the unit to shut down to prevent further issues.

Causes of the E4 Error Code

Faulty Sensor: The sensor itself may be defective or damaged.
Loose or Disconnected Wires: The wiring connecting the sensor to the control board could be loose or disconnected.
Dirty Sensor: Accumulation of dirt or debris on the sensor might cause malfunction.
Control Board Issues: Sometimes, the control board may have faults affecting the sensor’s performance.

Steps to Diagnose and Fix the E4 Error

1. Turn Off the AC:

Ensure safety by turning off the air conditioner and unplugging it from the power source before starting any inspection or repair.

2. Access the Outdoor Unit:

Open the cover of the outdoor unit. You may need a screwdriver to remove the screws securing the cover.

3. Locate the Ambient Sensor:

Find the outdoor ambient temperature sensor on or near the condenser coil inside the outdoor unit.

4. Inspect the Sensor:

Check if the sensor is properly connected to the control board. Look for any loose or disconnected wires.

5. Clean the Sensor:

If the sensor is dirty, gently clean it with a soft cloth to remove any dirt or debris.

6. Test the Sensor:

If you have a multimeter, test the sensor’s resistance and compare the readings with the specifications provided in the user manual.

7. Reconnect or Replace the Sensor:

If the wires are loose, reconnect them securely. If the sensor is found to be faulty, it may need to be replaced with a compatible one from a reliable supplier.

8. Reassemble the Unit:

After resolving the sensor issue, reassemble the outdoor unit and plug the AC back in.

9. Test the AC:

Turn on the air conditioner to see if the E4 error code is resolved. Monitor the unit to ensure it operates correctly.

When to Seek Professional Help

If you’ve followed these steps and the E4 error persists, there might be a more complex issue at hand. Problems with the control board or other internal components require professional expertise. offers expert AC repair services, and our skilled technicians can quickly diagnose and fix any issues with your Dawlance inverter AC. Whether it’s a faulty sensor, wiring problems, or more severe issues, we’ve got you covered.

Contact Today:


Phone: 03111333318


Don’t let an E4 error disrupt your comfort. Reach out to for reliable and efficient AC repair services. Our team is dedicated to ensuring your AC operates at its best, providing you with a cool and comfortable environment year-round.

Shaikh Hamza

Author Shaikh Hamza

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