Air Flow Problem
The manufacturer has assigned this error or fault code to indicate a possible problem with are flow or the heating system in the dryer. This error code is indicating that the exhaust air temperature is either below 18 degrees Fahrenheit or above 250 degrees Fahrenheit. Check the thermistor with an Ohm meter, if it reads >50k Ohms (E1) or less than 500 Ohms (E2) it is defective. Also check the heating element to be sure it has continuity. And check the airflow through the dryer and out through the exhaust to be sure there isn’t an obstruction.