throttle valve, expansion valve (Dieselpartsworld) 2016-02-28    

The manifold pressure gauge for fault diagnosis of air conditioning system of automobile maintenance
Fault form:
After the outlet temperature is not low enough to fall within the scope of this low pressure vacuum
You can see the freezing refrigeration dryer on line connection
The fault may exist:
This expansion valve stuck / open
I like dry filter clogging, throttle valve, expansion valve
The refrigerant in the pipeline. (Note: before and after blocking parts will appear difference)
Repair method of fault:
We replace the expansion valve (temperature control, first check the temperature sensor installation and work!). Http://www.qcwxjs.com/v
Note: if a foreign body caused by pollution on the check valve (dryer graining, compressor, metal detritus) if there is, the whole system is clean!