Upon arrival customer had two units to look at. First one was DFCU48 which was a mini split. System has and E2 error code. Reset system and system came on. Went to roof top and mini split had low Freon levels. Customer wanted to recharge unit. Added 3lbs to system, mini split is now cooling. The other system covers the left front kitchen area. Found drain pan full with float switch activated. Found main drain line not backed up and dry. Dumped water that was in drain pan into main drain line and water drained properly. System came back on and watched water drain into main drain line properly. Checked to see if coil was level, checked to see if drain pan was cracked and both were good. Recommended sticking some treatment tablets in main drain pan.