Toshiba
General Protection Trip Without Displayed Code
Unit displays timer light blinking but no specific error code; operation stops intermittently.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Overheating of indoor or outdoor PCB, Intermittent sensor connection, Marginal power supply, Fan motor intermittent failure
How to Fix / Troubleshooting
Safety first: Turn off power before inspecting internal components.
- Step 1 – Clean filters and coils: Ensure good airflow to prevent overheating.
- Step 2 – Check ventilation around outdoor unit: Make sure the outdoor unit is not enclosed or recirculating hot air.
- Step 3 – Inspect connectors: Reseat major connectors on indoor and outdoor PCBs, especially sensor and fan motor plugs.
- Step 4 – Power reset: Turn off power for 10 minutes, then restart and observe operation.
- Step 5 – Technician diagnosis: If intermittent trips continue, a technician should read detailed fault history (if available) and test sensors, fans, and PCB temperatures.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Indoor or Outdoor Control PCB
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements