has updated it's forum.  To post a question please visit the new Ask@ Forum.   

With a database of over 10000 questions the library will remain available for an extended period.


what is the possible cause of A/C compressor having ice over it? and how to solve? View All

12 years ago - 2 months left to answer. - 2 responses - Report Abuse
Respond to question
    0      [lnkReport]        0       0       
Share |

Are we talking about a car or home A/C unit? In either case, the problem is likely due to a lack of air flow going through the evaporative coil. If this is a home A/C unit, the problem is most likely a dirty filter. So you'll need to clean that or replace it. The components in your outside unit, compressor, condenser fan, the inside blower motor etc. all have overload devices built in that would shut anything down it were running under stress.

If this is a car, I would bring it into a mechanic and have it service. I wouldn't place with A/C on a car....

12 years ago


  0     0         

Gary Bailey
The condition is known as "Frost Back" and can occur if the heat load is too little for the system or there are restrictions to the air flow through the evaporator. Poor air flow can be caused by a dirty air filter, dirty evaporator, faulty fan, or it could be a malfunctioning coolant metering device (thermal expansion valve-TXV). The condition is risky for the compressor because liquid coolant could flood back to the compressor causing permanent damage.

12 years ago


  0     0  does not provide engineering advice. The Ask@ service is a forum for members to exchange ideas relating to the world of engineering. We caution users not to accept any responses that they receive without further validation, and not to rely on any engineering advice that they may get from other members of the Ask@ forum. specifically disclaims any obligation to validate or verify any information posted within the Ask@ service. encourages users to seek the services of a professional engineer for any engineering advice they may require.