Fujitsu · Mini-split
EE-E9 Drain / float switch error
What this code means
Fujitsu's general fault indicator is "EE:EE" with a specific two-digit sub-code read out via a button sequence; sub-code E9 specifically indicates a condensate drain/float-switch fault, not a communication loss between indoor and outdoor units.
Most likely causes
- Clogged or blocked condensate drain line
- Float switch stuck or failed
- Improper drain pan slope
What to try first
Check the indoor unit's condensate drain line for a clog and confirm the drain pan is draining freely — this is the same fix as the site's generic "drain / float switch error" entry.
Good news: this one is often fixable without a service call. If it persists after the steps above, have it looked at.
FAQ
What does Fujitsu error code EE-E9 mean?
Drain / float switch error. Fujitsu's general fault indicator is "EE:EE" with a specific two-digit sub-code read out via a button sequence; sub-code E9 specifically indicates a condensate drain/float-switch fault, not a communication loss between indoor and outdoor units.
Can I fix Fujitsu code EE-E9 myself?
Often, yes. Check the indoor unit's condensate drain line for a clog and confirm the drain pan is draining freely — this is the same fix as the site's generic "drain / float switch error" entry.
What causes Fujitsu code EE-E9?
The most common causes are: clogged or blocked condensate drain line; float switch stuck or failed; improper drain pan slope.
Other mini-split brands: Mitsubishi · Daikin · LG · Gree · Carrier · Generic · 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.