Piper ARCHER II Pilot Operating Handbook page 226

The following table shows the meaning of each message. System messages are displayed in white text.
Message
External Power Lost
Critical battery fault!
Powering off
Battery fault
Battery charger fault
Low battery
Hardware fault
Power supply fault
Unit temperature limit
exceeded
Network address
conflict
Communication error
Factory calibration
data invalid
Magnetic field model
database out of date
Magnetometer
Hardware fault
Using external GPS
data
Not receiving RS-232
data
Not receiving ARINC
429 data
GPS receiver fault
ARINC 429 interface
configuration error
Software version
mismatch
These messages remain while the condition persists.
AFMS, Garmin G5 AML STC
Page 7–2
Meaning
Aircraft power has been removed from the G5.
Battery has critical fault condition and the unit is about to power off to avoid
damage to the battery.
Battery has a fault condition – unit needs service.
Battery charger has a fault condition – unit needs service.
Battery charge level is low.
Unit has a hardware fault – unit needs service.
Unit power supply fault detected – unit needs service.
Unit is too hot or too cold.
Another G5 with the same address is detected on the network (most commonly
a wiring error on one of the units).
General communication error (most commonly appears in conjunction with
Network Address Conflict message).
Unit calibration data not valid – unit needs service.
Internal magnetic field database is out of date - software update required.
The magnetometer has detected a fault – unit needs service. Heading data
may not be available.
GPS data from another network LRU is being used. The unit's internal GPS
receiver is enabled, but unable to establish a GPS fix.
The G5 is not receiving RS-232 data from the GPS navigator – system needs
service.
The G5 is not receiving ARINC 429 data from the navigation source – system
needs service.
The G5 on-board GPS receiver has a fault.
The G5 ARINC 429 port is receiving information from an incorrect source –
system needs service.
The G5 attitude indicator and the G5 HSI units have different software. Cross
fill of baro, heading and altitude bugs is disabled.
190-01112-13 Rev. 5