TCL error code E3
What it means
Low pressure protection.
Possible causes
Refrigerant leak or undercharge Restricted indoor airflow from dirty filters Expansion device or capillary blockage
Suggested fix
Inspect filters and coils, check suction pressure and search for evidence of leaks or restrictions; a technician should carry out leak repair, recharge and clear any blockage.
Safety first. Isolate the power supply before inspecting any unit. Refrigerant-circuit
and electrical repairs must be carried out by a qualified, registered technician.
Other TCL codes
- E1 — High pressure protection.
- E2 — Indoor evaporator temperature sensor fault.
- E4 — Compressor discharge temperature protection.
- E5 — Overcurrent or overload protection.
- E6 — Communication error between indoor and outdoor units.
- EC — Refrigerant leak detection alarm.
- P0 — High voltage protection.
- P1 — Low voltage protection.
- P2 — Condensate pan full or water-level protection.
- P4 — Fan speed error or monitored speed out of range.