ESP 19
4-20
Table 4-4. Main Controller LED Indicators
Indicator Function Color
Main
Controller
Diagnostics
Error Codes
Flashes 1: Main Controller OK
Flashes 2: Short or open at hydraulic pump output
Flashes 3: Short circuit on the Up, Down, Horn, Buzzer, or
Hour Meter outputs
Flashes 4: Short circuit on one of the Steering outputs
Flashes 5: Error reading/writing NVM-using default values
Red
System
Diagnostics
Error Codes
Flashes 1: System OK
Flashes 2: Tilt limit exceeded
Flashes 3: Transaxle brake error
Flashes 4: Unable to Communicate with Motor Controller
Flashes 5: Unable to Communicate with Joystick
Green
EASI-TXD Upper Control Transmitting Green
EASI-RXD Upper Control Receiving Green
Mast Down Mast Down Switch Output Green
Lower Down Lower Mast Down Output Green
Lower Raise Lower Mast Up Output Green
Upper Controls Upper Controls Activated Green
Steer Left Steer Left Output Green
Steer Right Steer Right Output Green
Down Valve Platform Down Output Green
Up Valve Platform Up Output Green
Horn ON Horn Output Green
Hour Meter Hour Meter On Output Green
Pump ON Pump Motor Running Output Green
IN-4, IN-5, IN-6, IN-7 (Spare Inputs) Green
NOTE: If a short is detected on either Up, Down, Horn, or Buzzer, none of the outputs will
function. If any of the error codes listed above are detected, see the following pages to further
troubleshoot the problem.
