Relevant Questions

What may happen when oil is carried over to the evaporator.
Or
The effects of ice on evaporator coil.

1. Oil is an insulator – poor conductor of heat – resulting in less heat transfer at the evaporator.

2. Less heat will be absorbed by the refrigerant.

3. The refrigerant leaving the evaporator with a low degree of superheat ,causes the TEV to gradually

     close – with the solenoid valve still in OPENED condition as the room has not been cooled to the

     required temperature.

4. Compressor stops on low pressure on the LP side with the room temperature not cooled down to the

    desired temperature.

5. This may be the beginning of the short-cycling operation of compressor.