Fix Betaflight OSD Warnings: ESCCCCC / ESCTTTT / ESCRRRR Explained

If you’re seeing weird messages on your Betaflight OSD like “ESCCCCC”, “ESCTTTT” or “ESCRRRR”, don’t panic—your quad isn’t broken. These are just ESC-related alarm warnings from Betaflight. Let’s walk through what they mean and how to turn them off safely and permanently.

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What Do These Messages Mean?

These cryptic OSD messages are triggered by ESC monitoring warnings enabled in Betaflight. Each string of letters corresponds to a specific sensor reading Betaflight is trying to display:

OSD Warning Meaning:

• ESCCCCC: ESC Current Alarm
• ESCTTTT: ESC Temperature Alarm
• ESCRRRR: ESC RPM Alarm

Betaflight uses these alerts to warn you of conditions it thinks are abnormal—but most of the time, they’re not useful for FPV pilots, especially because:

• Most ESCs don’t have reliable temperature sensors.
• RPM and current alarms are often false positives due to firmware quirks.

These errors have nothing to do with ESC settings in BLHeli_32 or AM32—these warnings are purely triggered and handled inside Betaflight, not your ESC firmware. These alarms are off by default in Betaflight, so if you’re seeing them, it may have enabled unintentionally.

How to Disable These Warnings

Connect your quad and go to the CLI tab in Betaflight Configurator.

Type the following to check the current settings:

get osd_esc

Look for these parameters:

osd_esc_temp_alarm

osd_esc_current_alarm

osd_esc_rpm_alarm

Now set each one to -1 to disable the warning:

set osd_esc_temp_alarm = -1

set osd_esc_current_alarm = -1

set osd_esc_rpm_alarm = -1

save

Done! The warnings will no longer show up on your OSD.

In newer Betaflight versions, -1 disables these OSD alarms entirely. In older Betaflight versions, some might require setting the values to 0 or -128. The allowed value range will be shown when you type get osd_esc in CLI.

If warnings persist, ensure you’re using a compatible ESC telemetry protocol (like DShot) and your ESC firmware isn’t sending junk values.

Final Thoughts

These OSD alerts can be useful in some rare cases, but for the vast majority of pilots, they’re just confusing and unnecessary.