A. Oil level is too high. Check the oil level, remove the pressure, and discharge the oil to the normal position.
B. Filter element failure of oil and gas separator is removed, inspected or replaced.
C. Replace the recommended brand of oil with too much foam.
D. The current limiting hole at the connector of the filter element return pipe of the oil and gas separator is blocked by the cleaning current limiting hole.
E. Do not replace the recommended brand of oil.
