Event Codes Listing - Honeywell PRIMUS 1000 Pilot's Manual

R
PRIMUS 1000 Integrated Avionics System

Event Codes Listing

Two categories of IAC events and associated codes are:
D
Power–up Events – These result in a latched event, identified as
event codes 0001 to 0199 and all 90XX event codes. The 28 Vdc
circuit breaker must be cycled off/on to reset this latched event.
D
Continuous Monitored Events – These result in autopilot/yaw
damper disengage with associated event codes 02XX and event
codes 91XX. If one of these monitors trips, such as in overpowering
the autopilot (codes 0221 pitch, 0222 roll, or 0223 yaw), and the
FAIL annunciator is displayed on the ADI, the failure can be reset
by holding down the
2 seconds. Resetting the IAC circuit breaker also resets the
computer. However, the preferred method is the AP disconnect
button. Not all the 02XX or 91XX codes result in the autopilot failing.
They may only result in the autopilot disconnecting, for example, a
primary vertical gyro pitch, event code 0207.
Event codes 0207, 0208, 0209, 0210, 0215, and 0217 may be caused
by an intermittent inverter or loss of inverter sync. Contact your Citation
Service Center for assistance with inverter problems.
Event codes 03XX and 04XX are codes that are logged but do not
prevent autopilot engagement. These event codes are related to the
display section of the IAC.
During the power–up test, the IAC sends commands to the servo motor
and compares the servo tach electrical response to an internal lookup
table. If there is a significant difference between the two, an event code
is stored. If these codes repeat 3 or more times, suspect a servo
interface problem.
Troubleshooting
7-10
AP disconnect control wheel button for
AP
A28–1146–134
REV 1 Jan/03