7: Troubleshooting and Diagnostics
Table | L1 Controller Messages | (continued) |
|
| |
L1 System Controller Message | Message Meaning and Action Needed | |
Temperature messages: low alt.
ATTN: <temp sensor description> advisory temperature reached @ xxC xxF
ATTN: <temp sensor description> critical temperature reached @ xxC xxF
ATTN: <temp sensor description> fault temperature reached @ xxC xxF
Temperature messages: high alt.
The ambient temperature at the IRU’s air inlet has exceeded 30° C.
The ambient temperature at the IRU’s air inlet has exceeded 35 °C.
The ambient temperature at the IRU’s air inlet has exceeded 40 °C.
ATTN: <temp sensor description> advisory temperature reached @ xxC xxF
ATTN: <temp sensor description> critical temperature reached @ xxC xxF
ATTN: <temp sensor description> fault temperature reached @ xxC xxF
Temperature stable message:
The ambient temperature at the IRU’s air inlet has exceeded 27 °C.
The ambient temperature at the IRU’s air inlet has exceeded 31 °C.
The ambient temperature at the IRU’s air inlet has exceeded 35 °C.
ATTN: <temp sensor description> stabilized @ xxC/xxF
The ambient temperature at the IRU’s air inlet has returned to an acceptable level.
|
|
Auto power down in xx seconds | The L1 controller has registered a fault and is |
| shutting down. The message displays every five |
| seconds until shutdown. |
IRU appears to have been powered down | The L1 controller has registered a fault and has shut |
| down. |
|
|
146 |
|
