Appliance Repair Questions? Ask a Technician for Answers ASAP
Sorry for the delay in getting to your question.
F18 indicates a draining failure.
Normally this is debris in the filter, jamming the pump.
drain the water out manually and then take the filter out.
Remove the debris, ensure the pump impellor can turn (the X shaped item)
Refit the filter and try the machine again.
Hope this helps