Original complaint
Indoor mini-split was leaking water into the occupied space.
- Condensate pump was difficult to access
- Pump/pan had partial blockage
- Water removal improved after cleaning
Measurements taken
- Supply air after service
- ~50°F
- Leak after drain test
- No active leak observed
Diagnostic process
- 1Accessed the in-wall condensate pump and drain path
- 2Vacuumed the pump and pan
- 3Cycled the pump and performed repeated drain tests
- 4Verified the indoor unit continued to cool while monitoring for renewed leakage
Finding / confirmed status
A partial condensate restriction in the pump/pan path was preventing reliable drainage.
Repair / action taken
Vacuumed and cleared the condensate pump/pan and verified pump operation with repeated drainage tests.
Final operating readings
- Supply air
- ~50°F
- Condensate leak
- Stopped during monitoring
Technician notes
On concealed mini-split pumps, access can be most of the job. Confirm drainage by cycling water through the actual pump path instead of assuming vacuuming alone fixed it.
- Test the drain after cleaning it
- Verify pump cycling, not just an empty pan
- Continue monitoring long enough to catch intermittent backup
Safety cautions
- Protect electrical components from condensate during service
- De-energize the indoor unit if water can reach live wiring
Safety note
HVAC work can involve high voltage, rotating equipment, pressurized refrigerants, and combustion systems. Use this site as a reference only. Follow the equipment manual, applicable codes, PPE, lockout/tagout, and current refrigerant rules. Field cases and troubleshooting paths are case-specific and are not OEM procedures or universal targets.