The owner described the fault? ：
This one? Bmw X 1 has just been filed from other places, and the customer has not had time to leave. I found two problems these days, one is that the warm air is not hot at all, and the other is that the air conditioner has a very smelly smell every time it is turned on, which is a bit like the smell of dead mice.
Air conditioning odor inspection steps:
The air conditioner in the left and right areas is turned on to a maximum of 28 degrees.
When the engine water temperature is normal, the air conditioning outlet is barely warm. The wind speed blown by the blower is very high, indicating that the air conditioning pipeline is not blocked. The smell of the air outlet is disgusting Fat brother doesn't feel like a dead mouse, but more like a mouse peeing.
Remove the air conditioning filter, and the fat brother sniffed it with his nose, but didn't smell it. Fat brother wondered if there was a mouse peeing in the blower or evaporator.
Remove the blower for inspection.
Brother pang continued to smell the blower, but he didn't smell the peculiar smell.
Check the evaporation box with an endoscope to see if there is any treasure in it.
The evaporation box was clean and nothing unusual was found.
Fat brother concluded: no abnormality was found from the air filter inlet to the evaporation box. Brother Pang suspects that the pipe behind the evaporation box smells bad. In addition to air conditioning, you can only try professional air conditioning cleaning agents, and there is no good way.
Warm air is not hot. Check steps:
If the warm air is not hot, first check whether the warm air pipe above the firewall is hot. If the inlet and outlet pipes are not hot, poor water circulation should be considered at this time. For high-end models like BMW Audi, manufacturers will design a solenoid valve or water pump on the heating water pipe. Its purpose is to prevent hot water from entering the heating water tank when the air conditioner is turned on for refrigeration, and to prevent the air duct baffle from closing loosely and the leakage of hot air from affecting refrigeration. Secondly, it is also used to cooperate with automatic air conditioning.
For example, this X 1 heater has an electronic water pump on it. If the water pump doesn't turn, the heater won't get hot.
The inspection method can be to touch the water pump with your hand and feel whether the water pump vibrates slightly. Brother pang, check the pump for vibration. If you can't feel it, you can also unplug the plug wire behind the water pump and try again.
Unplug the plug and test whether there is power supply with a test lamp. After inspection, the water pump power supply is normal.
Since the pumps are all working, why are they not hot? At this time, the fat brother should consider whether the pipeline is blocked or there is air in the pipeline to form air resistance.
Unplug the water pump pipe for inspection. Brother Pang was surprised to find something in the pipe.
Take it out and see what it is, baby
Why is there a plastic bag in the water pipe? This is the masterpiece of a great god.
What is the operation of stuffing something in the heating pipe? Is the air conditioner not cold or the warm air too hot?
When the temperature is adjusted to 28 degrees, the hot air at the outlet is really hot. Brother pang also cleaned the air conditioning pipes, and the smell was not bad.
Fat brother concluded: this time, fat brother only used a bottle of air conditioning cleaning agent, and the rest was basically work expenses.
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.