Toshiba P-series protections: what the handbook groups under one letter

What Does Error P-series Mean?

Toshiba organises its fault codes by leading letter, and the P-series marks protective shutdowns rather than component failures. A P code means the equipment measured a condition outside its permitted range and stopped itself, which is a materially different statement from an E code reporting a communication or controller problem. Applies to: Toshiba air conditioning equipment using the fault code tables published in the Toshiba United Kingdom technical handbook Toshiba's technical handbook covers a wide range of equipment sold in the United Kingdom, and the same code can appear against different subsystems on residential and on larger commercial equipment. Take the model from the outdoor and indoor data plates and read the code against the handbook table for that family. Owner-safe checks: Photograph the controller showing the complete code, including the letter and every digit that follows it. | Copy the indoor and outdoor model numbers from their data plates so the correct handbook table can be used. | Deal with the two airflow variables you can reach: wash the indoor filters and open up the space around the outdoor casing. Qualified technician: Refrigerant measurement, leak detection, and coil cleaning are certified activities under EPA Section 608 in the United States and F-Gas rules in the United Kingdom and European Union. | Repeatedly restarting a system that keeps reaching a protection puts the equipment back into the condition the protection stopped, which is worth avoiding.