Toshiba Carrier E09 error code

What it means

The Toshiba Carrier table lists E09 as duplicated header remote controllers. It says two remote controllers are set as header in double-remote control.

Urgency

Likely causes

1. Two wired controllers are both set as header controllers
2. Double-remote-control addressing is incorrect
3. The remote controller address setting needs service

Homeowner fix

Power cycle once if you can do that safely. Do not change hidden controller address or header/follower settings.

When to call a pro

Call a licensed HVAC technician if E09 returns. Tell them Toshiba Carrier lists E09 as duplicated header remote controllers.

Repair vs replace

This is usually a setup correction. Replacement is unlikely unless a controller or PCB is confirmed failed.

• 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 double-remote-control header/follower settings and remote-controller address configuration. 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 E and nine 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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