Generic · Mini-split
Drain / float switch error Condensate drain blocked
What this code means
Water isn't draining from the indoor unit fast enough and a float switch has cut power to prevent an overflow leak.
Most likely causes
- Algae or dust clogging the condensate drain line
- Kinked or improperly sloped drain tubing
- Failed condensate pump
What to try first
Locate the drain line exit outside and check for blockage; a wet/dry vac on the outdoor end can sometimes clear it.
Good news: this one is often fixable without a service call. If it persists after the steps above, have it looked at.
Find the part on Amazon →FAQ
What does Generic error code Drain / float switch error mean?
Condensate drain blocked. Water isn't draining from the indoor unit fast enough and a float switch has cut power to prevent an overflow leak.
Can I fix Generic code Drain / float switch error myself?
Often, yes. Locate the drain line exit outside and check for blockage; a wet/dry vac on the outdoor end can sometimes clear it.
What causes Generic code Drain / float switch error?
The most common causes are: algae or dust clogging the condensate drain line; kinked or improperly sloped drain tubing; failed condensate pump.
Other Generic mini-split codes
All Generic mini-split error codes →
Other mini-split brands: Mitsubishi · Daikin · LG · Fujitsu · Gree · Carrier · Panasonic
This information may contain errors or not apply to your exact model — always double-check it against your appliance's own manual before acting. If there's any chance of a gas, fire, electrical, carbon monoxide, or other safety hazard, stop and call a licensed professional or the appropriate agency (e.g. your gas utility) instead of relying on this page alone.