Filter
Top Products
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC
TROUBLESHOOTING & REPAIR
F-22 F-22
COMMANDER 400 WITH G2713-2 or -3 CONTROL BOARD
ERROR CODES DURING
INITIALIZATION SEQUENCE
DEFINITION / SYMPTOM CORRECTIVE ACTION
SSr
EHC
ECL
CSS
Processor is not reading a valid
range control switch position.
The exciter voltage level is too
high (greater than 550VAC).
The exciter voltage level is too
low (less than 140VAC).
The processor is not receiving
zero cross signals properly or the
engine RPM is too high.
Check for proper selector
switch/handle alignment.
Perform the Range Switch Test.
Check the exciter voltage wave-
forms as illustrated in the
Oscilloscope Waveforms Section.
Perform the Stator Voltage Exciter
Winding Test.
Perform the Engine Throttle
Adjustment Test.
Perform the Exciter Capacitor
Bank Test.
Check leads #268, #269 & #270
from J50 to J4 at the control
board for loose or faulty connec-
tions. Also check the T1, T2, &
T3 lead connections from the
exciter module to the stator and
capacitor bank leads.
COMMANDER 400