An engine cooling (Cooling Fan) is in use to maintain a stable temperature inside the control panel of the machine, because the control panel must always be maintained a minimum temperature of 240 C if not it will affect the performance of the engine system so the error, then the condition of the cooling fan must be fully awake and in control always. In case this happens is just a fan who works while the compressor is not working.
nah to know if the compressor is working or not, can be done in two ways, namely checks the flow of electricity that passes through the compressor and the refrigerant pressure in the pipeline.
1 Pengechekan current into the compressor using pliers ampere meter, then flip one of the wires that go to the compressor (positive or negative), then adapt the results of earlier measurements with standard electric current (ampere current) are listed on the ac unit (name plate) , if pliers ampere meter does not show the existence of an electric current in make sure the compressor is not working presumed dead (to replace the compressor)
2 Checked the pressure of refrigerant in the compressor pipe, too bad on the cooling fan is not there because it is innate Pulve nipple manufacturer (original) so to check freonya pressure can not be different from the usual air conditioning installed in the home or in the office.
After checking on the compressor were spending it at first hospitalization in the garage because the compressor must be replaced with a new one.
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