Answer: (1) The inlet temperature is too high.
(2) The air volume is too large.
(3) The refrigeration system is faulty, the compressor does not run, and the control valve is poorly set or damaged.
(4) The automatic drainer does not drain smoothly.
(5) The pre-filter does not drain completely.
(6) The evaporation pressure and evaporation temperature of the dryer are high.
