Air Handler's 3/4" drain line P trap plugged last night.
Overflow pan drain line was dripping this morning , glad the wife knows to immediately tell me.
Drain line P trap is hard to access and clean out due to a retrofit of an additional return air duct into my old system.
Can't get a conventional snake into the 3/4 drain line.
I pulled the high level float switch out of its tee and used a heavy duty 30" long cable tie wrap ( zip tie) as a snake.
It was rigid enough to curl into a bent shape to get into a 3/4 pipe tee and reach the P trap, but stiff enough to push out the biological mung.
Then poured a quart of bleach into the line using funnel & tubing.
Normally I purge it with bleach same time as the pleated filter change but skipped that step in May.
Hope this tip is useful to others.
Overflow pan drain line was dripping this morning , glad the wife knows to immediately tell me.
Drain line P trap is hard to access and clean out due to a retrofit of an additional return air duct into my old system.
Can't get a conventional snake into the 3/4 drain line.
I pulled the high level float switch out of its tee and used a heavy duty 30" long cable tie wrap ( zip tie) as a snake.
It was rigid enough to curl into a bent shape to get into a 3/4 pipe tee and reach the P trap, but stiff enough to push out the biological mung.
Then poured a quart of bleach into the line using funnel & tubing.
Normally I purge it with bleach same time as the pleated filter change but skipped that step in May.
Hope this tip is useful to others.