Toshiba Carrier / Toshiba Carrier 26 High Wall
Toshiba Carrier H01 error code
The Toshiba Carrier table lists H01 as outdoor compressor breakdown. It points to the current-detect circuit and power voltage, including current releasing control at minimum frequency or short-circuit current after direct excitation.
- Urgency
- stop use
- Verified
- Jul 31, 2026
- Fix path
- Technician
What it means
The Toshiba Carrier table lists H01 as outdoor compressor breakdown. It points to the current-detect circuit and power voltage, including current releasing control at minimum frequency or short-circuit current after direct excitation.
Urgency
Likely causes
- The compressor current protection reached its control limit
- Short-circuit current was detected during compressor drive
- Power voltage or current-detect circuitry needs service
- The outdoor compressor drive circuit needs service
Homeowner fix
Turn the system off. Do not keep resetting it and do not open the outdoor unit.
When to call a pro
Call a licensed HVAC technician for H01. Tell them Toshiba Carrier identifies H01 as outdoor compressor breakdown with current-detect and power-voltage checks.
This code points to compressor and electrical or inverter work - get repair quotes from contractors in your area.
Get repair quotesRepair vs replace
Compressor or inverter repairs can be expensive. Compare repair with replacement if the diagnosis includes compressor or inverter replacement on an older out-of-warranty unit.
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 compressor current, current-detect circuit, power voltage, inverter drive, compressor wiring, and outdoor PCB. 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 H and one 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