I am having trouble calibrating a Reedy 800z.

Setup is:
Futaba 3PV with 304 receiver.
Reedy Sonic 540-M3
Reedy 800z

I have confirmed all connections and I am able to power up the receiver and the steering servo works just fine.

The problem arises when I try to calibrate the throttle. I am able to set the forward according to the directions but when I attempt to calibrate the full brake it seems to go into an error mode.

When attempting the full brake it gives me a blinking red light and that’s it.

I can’t find a description of what the blinking red light means despite a fair amount of google searching. The manual doesn’t list an error code for just red blinking light.

I have an email out to Reedy but not been able to do phone support yet.

Anyone have a suggestion?

Thanks in advance!