Need help NAS 90 A/C won't cool - Defender Source
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  #1  
Old June 25th, 2015, 01:22 PM
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Jason Bullis
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Need help NAS 90 A/C won't cool

The compressor turns on, and is charged. The fan works only blowing hot air. Where should I start?

Thanks
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  #2  
Old June 25th, 2015, 01:24 PM
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Russell
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Quote:
Originally Posted by Jbullis View Post
The compressor turns on, and is charged. The fan works only blowing hot air. Where should I start?

Thanks
Does the clutch engage on your compressor and is the high pressure line hot (the thinner tubing one) at the compressor?
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Old June 25th, 2015, 01:26 PM
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high side and low side pressures ? If the compressor clutch is engaging and the cooling fan up front is running and the inside fan is blowing, the pressures will tell if the expansion valve is stuck or not.
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  #4  
Old June 25th, 2015, 02:50 PM
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Jason Bullis
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Quote:
Originally Posted by down_shift View Post
Does the clutch engage on your compressor and is the high pressure line hot (the thinner tubing one) at the compressor?

The high pressure lines does get hot...
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Old June 25th, 2015, 10:29 PM
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Jason Bullis
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Quote:
Originally Posted by Uncle Douglas View Post
high side and low side pressures ? If the compressor clutch is engaging and the cooling fan up front is running and the inside fan is blowing, the pressures will tell if the expansion valve is stuck or not.
low pressure= 41

hi pressure= 265
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