Toshiba Carrier F15 error code

What it means

The Toshiba Carrier table lists F15 as temperature sensor connection error. It says the TE and TS sensors may be connected incorrectly.

Urgency

Likely causes

1. The TE and TS outdoor sensors are connected to the wrong locations
2. Outdoor sensor connectors were swapped during service or installation
3. The outdoor sensor harness or PCB input needs service

Homeowner fix

Turn the system off if F15 returns. Do not open the outdoor unit or move sensor plugs.

When to call a pro

Call a licensed HVAC technician if F15 returns. Tell them Toshiba Carrier identifies F15 as TE/TS temperature sensor connection error.

Repair vs replace

Incorrect sensor connection is normally a wiring correction. Replacement is unlikely unless a sensor or board was damaged.

• 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: verify TE and TS sensor locations, connectors, harness routing, and outdoor PCB inputs. 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 fifteen 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

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