When it comes to snowy days, the roof of the pure electric vehicle is covered with snow in the morning, how to do when the external exhaust pipe of the bus air conditioner is frosty and icy?

Solution: When the roof of the pure electric vehicle is covered with snow in the morning, you can start the vehicle, but do not turn on the air conditioning. If there are artificial snow plowing facilities can be driven to the designated area in advance before leaving the field for artificial snow plowing work. To clear the vehicle mounted air conditioning top machine snow (can use a mop or broom) mainly and check the condensing fan, if there is snow or ice on the fan blades, the noise will increase when running, vibration will increase, may lead to broken fan blades or fan damage. To be cleared before you can open the bus air conditioning, to ensure that the air conditioning condensing fan is running normally before you can use the field.
Tip: Please pay attention to safety when working to clear the snow on top of the bus!
 

What should I do if water accumulates on the roof top of bus in extreme low temperature (when the ambient temperature is below 0 degrees)?

If the low-temperature bus wash, especially at night, the bus roof top air conditioner roof will occur water accumulation phenomenon, the next day will cause the condensing fan and external exhaust pipe ice, resulting in air conditioning failure.
Solution: When opening the bus hvac system in low temperature weather, it is recommended to use the automatic mode when opening the heating. In extreme low temperature air conditioning heating run for a period of time, the automatic frost mode, the compressor runs for a period of time, due to the cold weather, the condensing fan can not take away the cold, thus making the condenser frost, the compressor into the protection mode, the beginning of the automatic frost, the fan does not work at this time, is a normal phenomenon. After the end of the frost (the length of time to frost according to the actual situation), the air conditioner will automatically turn into heating mode. In the frost, you can not use the air conditioning panel, such as the conversion mode will affect the frost effect, so that the air conditioning heating efficiency significantly reduced.
Tip: Do not wash the vehicle in low temperature!



In the extreme weather pure electric bus air conditioner use, with PTC electric auxiliary heat technology air conditioning than without PTC electric auxiliary heat air conditioning heating effect is better?

The PTC electric auxiliary heat technology of air conditioners is to increase the heat production with additional electric heating. In the low temperature state, using the same heating automatic mode, those with PTC electric auxiliary heating technology can switch between normal heating and PTC electric auxiliary heating. When the outside temperature of the car is lower than minus 2℃, PTC electric auxiliary heating starts to work and the compressor stops running. When the outside temperature of the car is high, the compressor begins to run work, PTC electric auxiliary heat is automatically cut off, so as to improve the thermal efficiency, the actual temperature of the car can generally reach in 16 ℃ up and down.
Without the installation of PTC electric auxiliary heat system, it will happen that the lower the outside temperature of the car, the longer the frost time of the air conditioner, the shorter the working time of the hot air conditioner, the car temperature is low, the car temperature is at 11 ℃ up and down.
As the PTC electric auxiliary heat is three times the electricity used by the compressor, it is not recommended to use it as the main heat, only auxiliary participation can be. If the PTC electric auxiliary heating system is often in working condition, it will consume too much electricity and affect the range.
Tip: It is recommended that the PTC electric auxiliary heat function should be added to pure electric models.



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