"2047ES / 2647ES / 3247ES" Service & Parts Manual - CE Specifications
March 2008
Page 5-15
LED Steady On
LED Off
2 Flashes
3 Flashes
4 Flashes
5 Flashes
Controller is operational and detects no irregularities on monitored circuits.
No power-up
•
No power to pin # 1.
•
No ground to B- post.
•
LED failure or internal controller fault.
Procedure fault.
•
Enable depressed at power up.
•
Enable depressed for more then 15 seconds without function request.
•
No signal on wire 17 pin # 2 when function requested.
•
No B- to diode board.
•
Failed diode/s.
•
Damaged wire harness.
•
Internal controller fault.
Motor circuit low.
Set with unit at rest and is the result of the voltage at M-2 dropping to
approximately 4 volts or lower. Possible causes:
•
Short to ground in the motor circuit between the motor contactor and
the M-2 terminal.
Motor circuit high
.
Set with the unit at rest and is the result of the voltage at M-2 terminal rising
above 21 volts. Possible causes:
•
Motor contactor points are welded shut
Motor contactor circuit open
.
Set when a function is requested but no current can flow through the motor
circuit to the M-2 terminal. Possible causes:
•
Blown 200 amp fuse
•
Malfunctioning motor contactor
•
Worn motor brushes
•
Incomplete circuit to the Sevcon pin #6
If the motor and contactor circuits are diagnosed as working properly:
•
Sevcon internal fault
LED Diagnostics Definitions (Flash Codes)
continued…
LED READING
DIAGNOSIS
