Horizon Hobby Spektrum FIRMA Smart ESC Series User Manual (English)

Questions and Answers:

K
Kathleen HartmanAug 4, 2025
What to do if Horizon Hobby Spektrum FIRMA Smart ESC motor won’t operate, LED flashes green with five short pulses?
- B
  Brandon MaxwellAug 4, 2025
  If the Horizon Hobby Control Systems motor won’t operate and the LED flashes green with five short pulses, it could be due to inadequate airflow to the ESC or too much load on the drive system. To resolve this, turn off the ESC and allow it to cool, consider improving airflow. Alternatively, change the battery, motor, gearing, or tires to reduce the load, or adjust your driving habits.
S
simsmonicaAug 10, 2025
What to do if Horizon Hobby Spektrum FIRMA Smart ESC motor won’t operate, LED flashes green with short single pulses?
- E
  Evan KimAug 10, 2025
  If the Horizon Hobby Control Systems motor won’t operate and the LED flashes green with short single pulses, the ESC may be in thermal shutoff mode or there's too much load on the drive system. It's also possible the ESC isn't getting enough airflow, or the motor is damaged, drawing excessive current. To fix this: * Turn off the ESC and let it cool, improving airflow. * Consider changing the battery, motor, gearing, or tires to reduce the load, or change your driving habits. * Verify the motor is not damaged.
D
david20Aug 15, 2025
Why Horizon Hobby Spektrum FIRMA Smart ESC Control Systems motor won’t operate, LED flashes red with short single pulses?
- C
  Colin KramerAug 15, 2025
  If the Horizon Hobby Control Systems motor won’t operate and the LED flashes red with short single pulses, it may be due to the battery voltage being below the LVC setting or incorrect ESC settings for your battery. Verify the battery is charged and that the ESC settings are correct for your battery.
J
Joseph GutierrezAug 21, 2025
How to fix Horizon Hobby Spektrum FIRMA Smart ESC motor stutters at start-up?
- G
  Glen Williams MDAug 22, 2025
  If your Horizon Hobby Control Systems motor stutters at start-up, it could be due to a poor wiring connection between the ESC and motor, or excessive drag on the drive system. Verify all wiring connections are solid and well insulated, and re-flow any cold solder joints. Also, check for parts rubbing, bent shafts, rusted bearings, tight gears, or anything that could cause extra drag on the drive system.
C
Colleen WolfeAug 28, 2025
What to do if Horizon Hobby Spektrum FIRMA Smart ESC motor won’t operate, LED flashes green with four short pulses repeating?
- A
  Amanda YoungAug 28, 2025
  If the Horizon Hobby Control Systems motor won’t operate and the LED flashes green with four short pulses repeating, the ESC has failed the self test. Send the ESC to a Horizon Hobby service center for service.

Horizon Hobby Spektrum FIRMA Smart ESC Series Specifications

General

Brand	Horizon Hobby
Model	Spektrum FIRMA Smart ESC Series
Category	Control Systems
Language	English

Summary

Throttle Signal and Operation

SMART Throttle

Combines throttle signals with telemetry data on a single servo connector for advanced communication.

Normal Servo Signal (PWM)

Firma ESCs are compatible with common RC receivers using conventional PWM signals for basic operation.

Installation and Wiring

ESC and Transmitter Calibration

Button Programming

More Programming Options

Details on using the SPMXCA200 Smart Programmer Box and SmartLink application for advanced settings.

Programmable Options

130A and 150A Options

Details on programmable settings and parameter options for 130A and 150A Firma ESC models.

160A Options

Details on programmable settings and parameter options for the 160A Firma ESC model, including default settings.

SMART Programmer Box and ESC Operation

SMART Programmer Box Programming

Guide for programming ESC settings via the SPMXCA200 SMART Programmer Box.

ESC Basic Operation

Instructions for connecting a battery and turning the ESC on/off, including tone indicators.

Troubleshooting Guide

Motor Not Operating (Red LED)

Troubleshooting motor failure indicated by red LED flashes, often related to LVC protection.

Motor Not Operating (Green LED Short)

Troubleshooting motor failure indicated by green LED flashes, usually due to thermal or current limits.

Motor Not Operating (Green LED Multiple)

Troubleshooting motor failure indicated by multiple green LED flashes, signalling self-test or temp issues.

Motor Stutters at Start-up

Diagnosing motor start-up issues such as stuttering, often caused by wiring or drive system drag.

Warranty and Service Information

1-Year Limited Warranty Details

Details of the 1-year limited warranty, coverage, exclusions, purchaser remedies.

Warranty Services and Contacts

Guidance on obtaining warranty support, contacting Horizon Hobby for assistance, and finding service information.

Non-Warranty Service

Procedures and costs associated with obtaining service for ESCs not covered under the limited warranty.

Compliance and Legal Information

FCC Compliance Information

Supplier's Declaration of Conformity and FCC compliance statements for the device.

Canadian Compliance Information

Compliance information for Canada, including ICES-3 (B)/NMB-3(B) standards.

European Union Compliance Information

EU Compliance Statement and instructions for WEEE disposal according to European Union directives.

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Horizon Hobby Spektrum FIRMA Smart ESC Series User Manual

Table of Contents