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Problem
Possible Cause
Action
GTR 225 does not power on | No power to the | Check power connections, |
| GTR 225 | breakers, and main |
|
| avionics switch |
| Faulty electrical | Contact your dealer to |
| wiring or connection | perform electrical system |
|
| test |
GTR 225 does not transmit | No power to Com | Check power connections |
| Mic key connection | Check Mic key input |
|
| connection |
Intercom doesn’t function | It can be enabled | Check connections |
| or disabled via a |
|
| remote mounted |
|
| switch or via the |
|
| menu. |
|
| No voice activation, | Check ICS page, Intercom |
| or if must talk too | On/Off, Adjust Intercom |
| loud |
|
Can’t change active frequency | Com Radio not | If in Lock Out mode, |
| communicating. The | press the external Com |
| radio may also be in | FLIP/FLOP key for two |
| lockout mode. In this | seconds to return to |
| case the radio would | normal operation or cycle |
| be tuned to 121.50 | the avionics power. If the |
| and the active freq | condition persists, contact |
| would not be able to | dealer. |
| be changed. |
|
Display shows | Corrupted system | Contact factory |
“Com Radio Needs Service” at | calibration |
|
parameters |
|
Table
Garmin GTR 225/225A/225B Pilot’s Guide |