Beating the Heat Troubleshooting Tips for Non-Working Excavator Air Conditioners

The weather is getting hotter and hotter, and working in an excavator without air conditioning can be unbearable. However, sometimes the air conditioner of the excavator may encounter issues and stop working properly. In this blog, we will discuss five common situations where the air conditioner of the excavator is not working and how to deal with them.

1.The air conditioner only blows air but does not cool

If you have recently purchased a new excavator and the air conditioner is not cooling, the first step is to refer to the instruction manual. The manual usually mentions a button labeled "A/C" on the control panel that needs to be turned on to activate the air conditioner. Many people may not be aware of this step and overlook it. Therefore, it is essential to read the manual thoroughly when you get a new excavator to ensure that you are using all the functions correctly.

2.Only hear the sound of the fan, but no air comes out

If you can hear the sound of the fan but no air is coming out, it may be due to a clogged cabin or a broken air grid. Dust and debris may have accumulated in the evaporator, preventing it from sucking in air and blowing it out. In this case, you can start by checking if the compressor is running normally, indicating that the system pressure is normal. If the system pressure is fine, you can try releasing the air conditioner slowly from the low-pressure side of the meter, then dismantle the air conditioner system, clean it, reinstall it, and recharge the air conditioner to solve the issue. It's also important to regularly check and clean the condenser fins from dust, leaves, and other debris using high-pressure air, steam, or water.

3.The air output of the air conditioner is weak

If the air volume is weak or there is no airflow, it may be due to a blocked air inlet. You can start by checking if the air conditioning filter element and the air inlet are blocked by debris. If there is no blockage, you can proceed by taking out the motor, connecting the plug, and turning on the fan to test it. If the fan speed does not change, it may indicate a broken variable resistor that needs to be replaced.

4.Engine struggles when the air conditioner is turned on

If you experience a drop in engine performance or the engine struggles when you turn on the air conditioner, it may be due to insufficient engine horsepower or reduced engine output power. The power required by the air conditioner usually accounts for about one-tenth of the engine power. In such cases, you can try increasing the engine power or slightly increasing the throttle when the air conditioner is turned on. It's also important to regularly check the air filter and diesel filter for any blockages.

5.The cooling effect of the air conditioner is poor

If the air conditioner is turned on correctly but the cooling effect is not satisfactory, you can start by checking the air conditioner belt for looseness. If the belt is fine, you can check if the refrigerant level is sufficient. If there are no issues with the refrigerant, then you can proceed to check the circuit. If there are no circuit problems, you may need to clean the evaporator's internal and external circulation, as well as the air conditioning filter.

In conclusion, a malfunctioning air conditioner in an excavator can be frustrating, especially during hot weather. However, by following the steps mentioned above and regularly maintaining and cleaning the air conditioning system, you can resolve many common issues and ensure that your excavator's air conditioner is working efficiently. It's also important to refer to the instruction manual and seek professional help if needed. Stay cool and comfortable while operating your excavator even in hot weather!

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