Dawlance Inverter AC Error Codes List and Troubleshooting

Key Takeaways

• Dawlance AC error codes like E1, E2, E4, and E6 indicate specific internal faults, often sensor-related.
• Always disconnect power before inspecting any internal components of your AC unit.
• A generic user manual lists these codes; specific model manuals may have variations.
• Refrigerant leakage (E4) and internal component failures typically require professional service.

What do Dawlance Inverter AC error codes mean?

Dawlance inverter AC units display error codes to signal specific malfunctions within the system. These codes help identify the problem quickly, guiding you or a technician towards a solution. The codes provided here are from a generic user manual for Dawlance "Fix air conditioner" and "Inverter air conditioner" types. It is important to note that code meanings can differ across various AC models and series, even within the Dawlance brand. Always refer to the specific manual for your unit for the most accurate information.

Diagnosis Steps for Dawlance AC Errors

When your Dawlance inverter AC displays an error code, follow these steps to diagnose the issue safely and systematically.

1. Note the Error Code: Identify the exact code displayed (e.g., E1, E2, E4, E6) and observe the RUN lamp's blinking pattern, if any. For example, E1 flashes once, E2 flashes twice, and E6 flashes 6 times.
2. Power Cycle the Unit:

• • Turn off the AC unit using its remote control.
  • Locate the dedicated circuit breaker for your AC unit in your home's electrical panel.
  • Switch the breaker to the "OFF" position.
  • Wait for at least 5 minutes.
  • Switch the breaker back to the "ON" position.
  • Turn on the AC unit with the remote control and see if the error persists.

3. Check for Obvious Obstructions:

• • For indoor fan motor issues (E6), ensure nothing is blocking the indoor unit's air intake or outlet.
  • Check that the air filters are clean and not excessively clogged, as this can strain the fan motor.

4. Inspect Visible Wiring (Power Disconnected):

• • Safety Warning: Before accessing the terminals, all the power circuits must be disconnected from the power supply. The appliance must be fitted with means for disconnection from the supply mains having a contact separation in all poles that provide full disconnection under overvoltage category III conditions, and these means must be incorporated in the fixed wiring in accordance with the wiring rules.
  • With power completely off at the breaker, carefully open the indoor unit cover (if accessible without specialized tools).
  • Visually inspect any accessible sensor wires or fan motor connections for looseness, damage, or corrosion. Do not attempt to disconnect or reconnect wires unless you are qualified.

5. Consult Your Specific Manual: If the generic information here does not fully resolve your issue, always consult the user manual that came with your specific Dawlance AC model.

Dawlance Inverter AC Error Code Meanings and Fixes

The following table outlines common error codes for Dawlance inverter AC units, their likely causes, and recommended actions. These codes are based on a generic user manual.

Running Dawlance AC on Solar or UPS

Running an air conditioner, especially an inverter model, on solar power or a UPS system requires careful consideration of power requirements and system compatibility. While Dawlance provides general AC units, the user manual does not specify the unit's behavior or compatibility with unstable power, generators, or UPS systems.

To ensure stable operation and prevent damage to your AC and power system:

1. Verify Power Capacity: Ensure your solar inverter or UPS system has sufficient continuous power output (in Watts or kVA) to handle the AC unit's running load. Inverter ACs have variable power consumption, but their maximum draw can be significant.
2. Check Starting Current: Although inverter ACs have lower starting currents than fixed-speed units, ensure your solar inverter or UPS can handle any brief surge. The Dawlance manual does not provide inrush current specifications.
3. Stable Voltage Supply: AC units require a stable voltage supply. Fluctuations from an undersized or unstable UPS/solar inverter can cause operational issues or damage.
4. Wiring Specifications: Ensure the power supply cable and connection supply cable meet the specified cross-sectional area for your AC's capacity. For example, an Inverter Type 9k or 12k unit requires 1.0mm² (AWG18) for its power supply and connection cables. An Inverter Type 18k or 22k unit requires 1.5mm² (AWG16) cables. For a 24k Inverter Type unit, 0.75mm² (AWG18) cables are specified. Using undersized wiring can lead to voltage drop and overheating.
5. Professional Installation: We recommend consulting with a qualified solar or UPS system installer to properly size and configure your system for AC operation. They can ensure compatibility and safe integration.

Safety First: Working with AC Units

Air conditioning units operate with high voltage electricity and refrigerant under pressure. Improper handling can lead to electric shock, injury, or damage to the unit.

• Disconnect All Power: Before accessing any terminals, opening covers, or performing any maintenance, all power circuits must be disconnected from the main power supply. This includes switching off the dedicated circuit breaker for the AC unit.
• Means for Disconnection: The appliance must be fitted with means for disconnection from the supply mains having a contact separation in all poles that provide full disconnection under overvoltage category III conditions, and these means must be incorporated in the fixed wiring in accordance with the wiring rules.
• Damaged Cords: If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard. Do not bend, tug or compress the power cord since this could damage it. Electrical shocks or fire are probably due to a damaged power cord. Specialised technical personnel only must replace a damaged power cord.
• Professional Service: Cleaning and maintenance must be carried out by specialised technical personnel. Repairs should only be performed by an authorized Service Centre of the manufacturer. Incorrect repair could expose the user to the risk of electric shock, etc.
• Immediate Shutdown: Switch off the air conditioner immediately and cut the power supply in the event of: Strange noises during operation. Faulty electronic control board Faulty fuses or switches. Spraying water or objects inside the appliance. Overheated cables or plugs. Very strong smells coming from the appliance.
• Operational Delay: The unit does not operate immediately if it is turned on after being turned off or after changing the mode during operation. This is a normal self-protection action; you need waiting for about 3 minutes.

When to call a technician instead

While basic troubleshooting can resolve some minor issues, many AC problems, especially those indicated by error codes, require professional expertise.

You should call a qualified technician or an authorized Dawlance Service Centre if:

• The error code persists after you have performed the basic power cycle and visual checks.
• The error code indicates refrigerant leakage (E4), as this involves specialized tools and knowledge for leak detection and repair.
• You suspect a faulty sensor or motor (E1, E2, E6) and do not have the necessary diagnostic tools or replacement parts.
• You need to access internal components beyond basic filter cleaning or external inspection.
• You are uncomfortable performing any of the diagnostic steps, especially those involving electrical components.
• The unit exhibits any of the critical safety symptoms described above, such as smoke, burning smells, or unusual noises.
• Any repairs or component replacements are attempted by unauthorized personnel, it could void your warranty and pose significant safety risks.