Fault: "Drain Problem" "Ck Sensor [START]". What should I do?

A drain error usually occurs if the level sensor is sensing solution in the vessel after the drain has opened. If the vessel is empty, and the level sensor indicates "Full," then the level sensor must be fixed.

If the vessel is full of solution after the drain is open, the problem could be in the drain line. Ensure that the drain line is clear and not kinked. 

If the vessel is empty, refer to the DELTA's main menu, use the arrow keys, and select the "Select Analog" screen. Record the four analog values. The Lvl value should be 6-10V. Next, fill the vessel with water. Again, record the four analog values. The Lvl value should be 0-3V.  

If the readings are out of range, refer to DELTA Service Procedure Level Sensor Analog Cleaning and Testing (DES007). If this service procedure does not correct the problem the Level Sensor may need to be replaced.