DE01 : Leak Detected Pump

The number on the end of the error code refers to which pump is having the issue. For example DE0#.

This is a manual stall test failure when the pump cannot build pressure to the target “Stall Test Pressure.” Will fault after 30 seconds.

No material in the pump or line

Make sure the pump and down stream color line are loaded with material.

Leak in the system

Determine if leak is external or internal by visually inspecting the system for fluid leakage.
Fix all loose or worn hoses, fittings, and seals. Inspect all valve seats and needles for wear, and replace worn piston or throat seals.