Paul

This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.

Logik LIW814W15 showing E21 mid-cycle after drainage path cleaned

The problem

A Logik LIW814W15 stopped halfway through a wash cycle and displayed error code E21, described in the thread as a pump drainage fault. The owner had already cleaned the filter, removed and cleaned the pump and connected hoses, checked the pump moved freely, and confirmed the waste pipe was clear, but the fault remained.

Likely cause

If the machine is pumping water away normally, the accepted reply says the fault is more likely to be in the pressure system or a blockage affecting that system rather than the drain pump itself. If water is not draining fully, a remaining blockage in the drain hose end or the sink waste connection was considered more likely.

What fixed it

The accepted advice was to first confirm whether the machine is actually draining correctly. If it is draining, focus on the pressure system rather than the pump blockage already checked. If it is not draining fully, recheck for a missed blockage, especially at the end of the drain hose and the sink u-bend/spout connection. No completed repair was confirmed in the discussion.

Checks to try

• Cleaned filter
• Removed and cleaned pump and connected pipes
• Pump checked internally and found to move freely
• Waste pipe blown through and found clear
• Advised to confirm whether water is actually pumping away
• Advised to check the end of the drain hose and the sink waste spout/u-bend connection