Toshiba Carrier / Toshiba Carrier 26 High Wall
Toshiba Carrier F13 error code
The Toshiba Carrier table lists F13 as heat sink sensor error. It says abnormal temperature was detected by the IGBT heat-sink temperature sensor.
- Urgency
- stop use
- Verified
- Jul 31, 2026
- Fix path
- Technician
What it means
The Toshiba Carrier table lists F13 as heat sink sensor error. It says abnormal temperature was detected by the IGBT heat-sink temperature sensor.
Urgency
Likely causes
- The IGBT heat-sink temperature sensor detected abnormal temperature
- The outdoor heat sink or inverter cooling path needs service
- The outdoor PCB or heat-sink sensor circuit needs service
Homeowner fix
Turn the system off if F13 returns. Keep the outdoor unit clear of leaves and debris outside the cabinet, but do not open it.
When to call a pro
Call a licensed HVAC technician if F13 returns. Tell them Toshiba Carrier identifies F13 as IGBT heat-sink sensor abnormal temperature.
This code points to electrical or inverter work - get repair quotes from contractors in your area.
Get repair quotesRepair vs replace
Heat-sink and inverter repairs can be significant. Compare replacement if the diagnosis includes inverter board failure on an older system.
See Toshiba Carrier mini-splitsYour Toshiba Carrier model
Toshiba Carrier 26 High Wall model pages in the Toshiba Carrier catalog help compare this repair path with current replacement options.
- Toshiba Carrier 26 High Wall 12,000 BTU R-454B 208/230V (RAV-HB121KRTP-UL / RAV-BP121AT2P-UL)
Toshiba Carrier 26 High Wall
- Toshiba Carrier 26 High Wall 18,000 BTU R-454B 208/230V (RAV-HB181KRTP-UL / RAV-BP181AT2P-UL)
Toshiba Carrier 26 High Wall
- Toshiba Carrier 26 High Wall 24,000 BTU R-454B 208/230V (RAV-HB241KRTP-UL / RAV-BP241AT2P-UL)
Toshiba Carrier 26 High Wall
- Toshiba Carrier 26 High Wall 30,000 BTU R-454B 208/230V (RAV-HB301KRTP-UL / RAV-BP301AT2P-UL)
Toshiba Carrier 26 High Wall
For your technician
Technician note: inspect IGBT heat-sink sensor, heat-sink condition, inverter cooling, outdoor PCB, and related wiring. Page context: Toshiba Carrier maps this display to the Toshiba Carrier 26 High Wall line; source: Toshiba Carrier RAV High Wall 12K-36K Installation Manual, Section 14 Troubleshooting, Error codes and parts to be checked; display convention: match the letter F and thirteen marker exactly before comparing neighboring codes.
Which systems show it
Toshiba Carrier 26 High Wall
Related troubleshooting
Use the symptom guide alongside the exact display code if the unit is flashing, cycling, or showing comfort symptoms.
Related codes
Source
- Document
- Toshiba Carrier RAV High Wall 12K-36K Installation Manual, Section 14 Troubleshooting, Error codes and parts to be checked