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© Retrotec 2017
8.2
Gauge may get stuck running “Re
-
calibrate touchscreen” if the
battery gets into a low state
If your gauge runs the “Re
-
calibrate touchscreen” procedure when you turn it on, it may have discharged to
a too low battery state. To recover from this error, plug the gauge into mains AC power and leave for at
least a half an hour. The charging should bring the gauge up to a minimum power level needed to maintain
the touchscreen calibration. This anomaly has been averted in gauge firmware 2.1.7 or later (1.1.7 for first
generation gauges in the red case).
8.3
Reset if you need to clear the gauge to base settings
If you want to return the gauge to its base settings, as if it just came off the assembly line, you can reset it
using a paper clip. First, turn the gauge OFF using the power key on the front (if possible). Next poke the
end of the paperclip into the small hole
marked “Reset”
next to the USB connector on the bottom of the
gauge. The splash screen will show as the device restarts.
Firmware versions prior to 1.1.7 ran the [Re-
calibrate touchscreen] procedure when the “Reset” was
pressed, but that was discontinued as it contributed to the problem discussed in Section 8.2.
8.4
Flashing screen may appear as gauge recovers from deep
discharge
When the gauge is first plugged into power after the battery has been fully discharged, it may take a few
minutes to charge sufficiently to be able to show the splash screen. If you press the power button and the
screen flashes without showing the splash screen, it means the gauge is busy charging and will start and
show the splash screen shortly.
8.5
Pressing power button may not turn gauge On if battery is fully
discharged
When the gauge is fully discharged, pressing the power button will not start the gauge. It is necessary to
plug the gauge in to mains power using the USB cable and AC power adapter. When the gauge is being
charged, a red light on the front of the gauge (bottom right corner) will be on solidly (not flashing). Once
the light goes off, the gauge is fully charged. From the fully discharged state, plugging USB into a computer
will not provide enough current to charge, the gauge must be plugged into mains power to re-charge.
8.6
Gauge will not reset (run splash screen) while gauge is plugged
into power
When the gauge is plugged in to power (either mains or computer USB), turning the gauge Off is actually
just putting it into a sleep mode. Turning the gauge back On brings it out of sleep mode, back to the Home
screen. In order to perform a hard reset and have the gauge run the splash screen requires the user to
remove the USB cable from the gauge before pressing the power On/Off key.
Situations where the user may need the hard restart include a) recovering from an App failure where the
gauge touchscreen has been Locked by the App, or b) changing between the “Network” types.
8.7
Flashing yellow LED on front means gauge had an internal
malfunction
When the gauge is first powered on, it will go through a self-diagnostic check and check for any problems
with any of the internal hardware modules of the gauge. If an error is discovered in any module, a flashing
yellow LED will display instead of the red for charging, or nothing for charged. Details about the
malfunction may be displayed on the Diagnostic Screen and the gauge will not show the Home Screen
