Question about Heating & Cooling
You may have a faulty high/low pressure control switch which is not cutting compressor function due to low pressure of refrigerant in the system. The hissing sound is caused by a lack of refrigerant passing through the expansion valve. The other thought I have is that the thermostatic expansion valve or your reciever drier may be clogged.
Posted on Jul 02, 2009
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Posted on Jan 02, 2017
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