1, after long-term use, the filter screen was not cleaned in time, and the internal air circulation was blocked.
2, the evaporator and condenser dust accumulation is too thick, will also reduce the heat transfer effect, leading to a decline in heating capacity.
3, air conditioning refrigerant shortage or condenser leakage.
4. The air four-way valve leaks gas, and some refrigerants that should have participated in the heat exchange directly flow back to the air return pipe from the compressor outlet pipe at the four-way valve, which leads to the decrease of refrigerants participating in the heat exchange and the decrease of heat exchange efficiency, resulting in insufficient heat.
5. The failure of the defroster causes the air conditioner to fail to turn into the defrosting operation state in time, which affects the thermal efficiency exchange of air conditioning heating.
6. The auxiliary electric heating function fails, resulting in insufficient heat of the air conditioner.
Extended data:
Air conditioning cleaning method:
Tools required: air conditioning cleaning cover, pressure spray bottle, air conditioning cleaning agent, foam cleaning agent, brush.
1, shut down, unscrew the screws on the panel with a screwdriver, remove the plastic shell of the panel, and rinse it directly with water after removing the plastic shell.
2, remove the air deflector, gently shake the air deflector, according to the installed buckle, it is easy to remove, and then rinse with water.
3. Install the air conditioning cleaning cover, fix the four corners, connect the drain pipe, and wrap the exposed wires to avoid soaking in water or detergent.
4. Clean the evaporator fins, spray the prepared foam cleaning agent evenly on the fins, completely cover the fins like foam, and then the black things will pass through the water guide tank together with the foaming agent and flow into the air conditioning cleaning cover.
5. For cleaning the wind wheel, the left and right wind wheels are fixed by three plastic buckles. When the buckle is opened and removed, the wind wheel and air duct area can be cleaned smoothly.
When cleaning the air duct and the wind wheel, you need to use the foam cleaner again, spray it evenly on these two parts and brush it slowly with a brush.
6. After washing, you can check the cleanliness. If there is any missing part, you can repeat the above steps.