Water won't drain from shower. Either trap or shower drain line is clogged.
Yes a clogged VENT pipe can cause a sluggish drain
Drain line is clogged.
Kitchen sink and washer use same drain line. Drain line clogged causing backup of drainage from washer into kitchen sink. Have drain line unclogged to take care of problem. If drain line not clogged, check for proper venting of drain lines.
It could be an algae buildup in the condensate drain.
Because the drain is clogged.
Because the primary drain is either clogged or the pump is not working.
depends if drain is clogged or not
A clogged drain most likely.
yes.
They share the same drain and it is becoming clogged. Drain cleaner in both drains should help.
You need to check for a clogged pipe .