How Many Temperature Sensors Can an Air Conditioner Have?
DAWLANCE air conditioners may include several temperature sensors, each with a specific purpose. Let’s explore the common types and their associated error codes.
Common Types of Sensors in DAWLANCE Air Conditioners
- Ambient Temperature Sensor
- Measures the air temperature in the surrounding environment.
- A malfunction triggers the E1 error code.
- Well Sensor
- Monitors the evaporator’s temperature to detect potential freezing issues.
- A fault generates the E2 error code.
Additional Sensors in Inverter Units
With the advent of inverter air conditioners, additional sensors have been introduced to enhance system performance:
- Condenser Sensor
- Measures the refrigerant temperature inside the outdoor coil.
- A failure in this sensor results in the E3 error code.
- Outdoor Ambient Sensor
- Monitors the temperature of the air drawn by the outdoor unit’s fan.
- A malfunction displays the E4 error code.
Diagnosing Temperature Sensor Failures
If you suspect an issue with the sensors, follow these steps to identify and resolve the problem:
1. Restart the System
- Turn off the air conditioner and unplug it for several minutes.
- Power it back on and check if the error persists.
2. Inspect the Connections
- Clean and check the sensor connections to ensure they are secure.
- Confirm the sensor is properly positioned.
3. Measure the Sensor’s Resistance
- Disconnect the sensor from the electronic board.
- Use a multimeter to measure its resistance.
- Compare the results with the manufacturer’s specifications.
- If reference values are unavailable, gently warm the sensor with your fingers: its resistance should decrease as the temperature increases.
4. Check the Sensor’s Power Supply
- With the sensor connected, use a multimeter set to DC voltage to measure the supplied voltage.
- A reading close to 2.5 V indicates proper operation.
5. Inspect the Electronic Board
- If the sensor and its connections are in good condition but the error persists, the electronic board might not be supplying the correct voltage.
The Importance of Sensors
Temperature sensors play a crucial role in:
- Detecting issues like freezing, overheating, or extreme temperature fluctuations.
- Optimizing energy efficiency by managing the thermodynamic states of the refrigerant.
