R/C Ultra Micro Airplanes

Castle Creations's speed controls and motors are some of the best in the industry. But sometimes they can be a pain to troubleshoot. What follows is a guide for the various different configurations of blinking lights you might get on your Castle Creations speed control. Please note that these only apply to their surface (car, truck, buggy) speed controls.

When Not Calibrating & No Throttle Input
Solid Green
Shouldn't occur at neutral
Indicates full throttle input
Flashing Red & Yellow
ESC has entered
Thermal Shutdown mode
Flashing Green
ESC not calibrated/armed OR throttle sub-trim is not "0"
Solid Yellow
Indicates the ESC is
neutral and armed.
Flashing Green & Yellow
ESC has entered
Low-Voltage Cutoff mode
Flashing Red
ESC not calibrated/armed OR throttle sub-trim is not "0"
Solid Red
Shouldn't occur at neutral
Indicates full reverse input
Flashing Green, Yellow, & Red
No radio signal; possible problem with ESC/radio
Flashing Yellow
Indicates a possible
problem with the ESC
When Not Calibrating & Applying Throttle/Reverse
Solid Green
Indicates full
throttle input
Flashing Red & Yellow
ESC has entered
Thermal Shutdown mode
Flashing Green
Partial throttle
Solid Yellow
Should not occur under
these circumstances
Flashing Green & Yellow
ESC has entered
Low-Voltage Cutoff mode
Flashing Red
Partial reverse
Solid Red
Indicates full
reverse input
Flashing Green, Yellow, & Red
No radio signal; possible problem with ESC/radio
Flashing Yellow
Indicates a possible
problem with the ESC
When Calibrating & Applying Throttle/Reverse
Solid Green
Indicates full throttle
input has been read
Flashing Red & Yellow
Shouldn't occur when
calibration is under way
Flashing Green
ESC is looking for full throttle
Solid Yellow
Indicates neutral has been
calibrated and is armed
Flashing Green & Yellow
Shouldn't occur when
calibration is under way
Flashing Red
ESC is looking for full reverse
Solid Red
Indicates full reverse
input has been read
Flashing Green, Yellow, & Red
No radio signal; possible problem with ESC/radio
Flashing Yellow
Indicates ESC is not seeing a
valid neutral signal