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How Many Types Of Maintenance
   
 
 
 
Write at least 5 Types Of Refrigerant ?
   
 
 
 
Definition of HVAC ?
   
 
 
 
Why The Condensing Unit Is Not Running while switch on the A/c ?
   
 
 
 
What is Reason for Frost Buildup On The Suction Line (big copper line) Or Near The Compressor ?
   
 
 
 
The Condenser Fan Is Running, But The Compressor Doesn’t working Why ?
   
 
 
 
5. What is direct expansion equipment?
   
 
 
 
What is the different between FCU and Spli A/c ?
   
 
 
 
One ton Equal to How Much BTU/Hr ?
   
 
 
 
What is the reason for water leak in Air conditioning ?