Help with WECO edger

[ekolar2]

My edger is a Weco 12 SC. On the weekend we carefully pressure washed it and waited 1 day before we plugged it again.

When I plugged it in, the LCD at first was displaying error code 5, then for a while acted normally, but after it stayed on for a minute stopped displaying anything. We opened the conrol module (Elision Technology ET100 with serial # ET100-02J004) and there is absolutely no sign of any moisture inside. Everything looks absolutely normal.

Is anyone familiar with that edger? What may be the problem? The grinding wheel spins fine, but the LCD is dead. Does anyone have PDF manual?
I cant find parts for that edger on the web...

[gemstone]

Can't figure why you'd pressure wash an edger.

[ekolar2]

It had a big build up of lens dust which had hardened up and 2 of the water lines were not working (they still don't even though I air cleaned them with a compressor). This is how I inherited it from the previous owner, so I decided to make it look and work better... but something went wrong.