TCL error code P1
What it means
Low voltage protection.
Possible causes
Line voltage too low for normal operation Voltage drop across long cable runs Unstable or weak grid supply
Suggested fix
Assess voltage at the unit during start and run conditions and upgrade cabling or address supply deficiencies; only clear the fault after confirming the voltage is within TCL's specified range.
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.
- E3 — Low pressure protection.
- 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.
- P2 — Condensate pan full or water-level protection.
- P4 — Fan speed error or monitored speed out of range.