PROBEM: While charging the display flashes:

SOLUTION: No need of any solution, this is not a problem. The instrument flashes (15 seconds between one flash and another) while charging to show that charging is in progress.


PROBLEM: While charging the display does not flash:

SOLUTION: It usually happens when the battery is completely empty. When the battery is completely empty, it would not be correct to charge it in the ordinary way. For this reason the instrument protects the battery by charging it very slowly. In this case:

1) leave the instrument on charge for 6 hrs about;

2) disconnect the charging cable and wait 10 minutes;

3) put on charge again: if the instrument’s display flashes, complete a full charge (12 hrs about).


PROBLEM: I cannot charge the instrument


- Be sure that the USB cable is the original one (not all USB cables let the instrument charge)

- Control that the charger is working: try to use the charger to charge a different device in order to verify it works.

- Try to use another different charger (it must be a 5 V charger with at least a 2 A output) and verify if it charges the instrument.

- The battery was completely empty? please apply the procedure explained above (whaile charging the display does not flash).


PROBLEM: Battery lasts less than 9 hrs


- Control backlight: it should be is in auto-mode (if you use the full backlight for all time the battery lasts less).

- control the volume of the audio variometer (the maximum volume makes the battery last less, specially if you have a sink tone continuous and persistent);

- before all charge the instrument for 12-13 hrs to give a full charge and verify if the battery has a good duration.

- Verify that the charger works correctly (try to charge the instrument using a different charger - at least 4 Amperes required for the Compass instruments).

- Verify that the power line is 220 V (in some Countries it is less and it takes much more time for a complete charge).

- follow the instructions described for the next problem (battery level wrong).

Remember that the performance of any battery decreases over time. After a year of use it is normal that the battery starts to last a bit less. If you use your instrument a lot, we recommend to change the battery after 2 years of use. Anyway, many instruments don’t need the battery substitution even after 4 years of use.


PROBLEM: The battery level is wrong


Charge the instrument for almost 12 hrs. After having full charged it, unplug the charger and wait 10 minutes (about). Switch on the instrument and enter in the HARDWARE INFO Menu. Read the battery voltage and take note of it: should be from 4.15 V to 4.20 V. Leave the instrument switched on for 2 hrs about (better if in simulation mode) and read again the battery Voltage: take note (should from 3.80 to 3.90 V). If values are less, contact sales@compass-italy.com and send the us the data of Voltage you registerd.




PROBLEM: The instrument does not switch on


- keep the “On” button pressed for not less than 10 seconds (or till the display shows the instrument’s logo).

- Take note that if the instrument’s memory is full the instrument takes more time for the booting procedure while switching on;

- if the instrument shows logo and then turns off: the battery is empty (see in the section “Charge and Battery” the correct way for charging an empty battery).

- If the instrument does not switch on: the battery is empty (see in the section “Charge and Battery” the correct way for charging an empty battery, and the way to solve the charging problems).


PROBLEM: The instrument does not switch off.


When you land it can happen that:

  1. the GPS is still recording the track and storing it.

  2. The GPRS has still not finished to send the data packets to the server.

As consequence, after being landed, it is recommended to wait a couple of minutes (from the moment the GPS unit is still at ground, because if you move at ground the GPS and GPRS can still be active).


PROBLEM: I cannot switch off the device.


Press the “reset” button (you will not loose data).


PROBLEM: The unit freezes in flight.


Press the “reset” button and turn the unit on again as soon as possible (if the instrument is switched on in 5 minutes your the track will be reconstructed and validated)




Take note that if the instrument has not showed any problem and the GPS is in 3D-fix, but you cannot see the maps, the problem is not to be found in the hardware or in the firmware of the instrument itself: some errors have been made in the map setup.


PROBLEM: I cannot see the terrain maps and the topographic maps


First of all: do you see the SD Card icon in the top bar menu?

  1. If not, the SD Card may be accidentally out of it’s slot: press it inside.

  2. If yes, but the SD Card icon is red, see the solutions in the SD Card problems section of this document


PROBLEM: I cannot see the terrain map


  1. The “.tif” file (.tif is the correct file extension of terrain maps) must be stored into the SD Card in the “Terrain” folder … and NOT inside the internal memory of the instrument (CP-EVO and Esy Pilot does not work when maps are stored inside it’s internal memory).

  2. Try to zoom out the map to enlarge the area and see if the terrain appears;

  3. Be sure you are not in a vast flatland area (the colormap is uniform);

  4. Control that you are inside the area of the downloaded map, or to have downloaded the right map for your area;

  5. Control that the GPS has 3D-fixed the satellites (the instrument needs to know “where you are” to show the right map: as consequence a satellites fix is necessary to furnish the point to visualize the map)

  6. The .tif file may be corrupted (if you try to open it in the computer the file will not work anymore: an accidental double click on it corrupts it): Download again the .tif file and copy it into the terrain folder of SD Card.

  7. control that the checkbox “show terrain” in the “maps” menu of the instrument is flagged.

  8. control in the “maps” menu that a “colormap” is associated with the active custom display.


PROBLEM: I cannot see the topographic maps


  1. is the instrument firmware updated to the last version? You need an update from year 2016 on.

  2. Did you copy the maps into the Topographic maps folder of the SD card (EVO)? If not, the instrument is not able to find the maps (attention: not inside the instrument’s memory but only in the SD Card!).

  3. Topographic maps must be copied inside the SD card and not into the internal memory of the instrument (EVO).

  4. Control that you have flagged the checkbox “show roads/water …” into the “Maps” menu of your instrument.

  5. Control to be sure that you are inside the area of the downloaded map.

  6. Control that the GPS has 3D-fixed the satellites (the instrument needs to know “where you are” to show the right map: as consequence a satellites fix is necessary to furnish the point to visualize the map).

  7. Try to zoom-out the map (enlarge the area showed) to see if details will appear: maybe yor zoom is too large.


PROBLEM: I cannot see the Waypoints in the map


- Enter in the Map menu and control that the checkbox “Show all the Waypoints” is flagged as active (the writing becomes red if active).

- Remember that your instrument can store many different waypoint files. Before using a waypoint file it must be activated: enter in the Waypoints menu and control to have the desired waypoint displayed (i.e. the waypoint file is activated). If not, press the button “Wayponts Menu” (upper left side of screen) and then press “Open File”. At this point just choose the desired Waypoint file to activate it (read the user’s manual to learn more on how to use waypoint files).

- follow this procedure: enter in waypoints menu > button “waypoints menu” > “delete all” > confirm “yes” (your waypoint will not be lost! But only stored as not active). Now press again “waypoints menu” and press “open file”. Select (touch) you waypoint file and press “open file”. That waypoint fill will be active. If you do not find the file, the problem is that the file is not existing in the memory of your instrument: upload it (see manual).

- the instrument cannot read your waypoint file format. The Instrument is normally able to read most formats but, if you want to be sure, you can save your waypoint file in “.wpt” format (you can find some applications in internet to transform a waypoint file into the .wpt format. If you do not find an application, just ask us or search it in this Compass website under the useful links section).




PROBLEM: The variometer does not show the correct values or it seems to be “slow” or not precise


- Enter in the setup > configuration menu and control the “averages”. We suggest to keep these values as standard:

  1. Audio variometer: 0.5 or 1

  2. Analog variometer: 1

  3. Digital variometer: 1 or 2 (specially in weak conditions) to 3 or 4 (in stronger conditions/ summertime in the Alps).

- Enter in the audio menu and control the curves of the CSS (Compass Sound System): any curve should start from (or very close to) the line of “0” (zero) climb rate (we recommend to start the curve, at least, at 0,1 or 0,2 m/s)

- try to load a different audio file (and control if it works properly)


PROBLEM: The Altitude is not showed correctly.


- If the instrument is not in “auto-calibration” mode (altitude or QNH has been set manually):

  1. enter the correct altitude or the QNH manually

  2. flag the option “continuous calibration by GPS”

  3. Let the GPS fix satellites and wait some minutes;

  4. Eventually switch the unit on again.

- If the instrument is in “auto-calibration” mode, let the GPS fix satellites and wait some minutes. - If the problem is not solved, switch off the device and turn it on again and wait till the GPS will fix satellites.

- If the problem is still not solved, enter manually the QNH or the Altitude and then repeat the same procedure described above (from point a) to point d)).


PROBLEM: I see the altitude value as “0000” and/or I see the value in writing instead of a number.


If you are not in auto-calibration mode (altitude or QNH has been set manually):

  1. enter the correct altitude or the QNH manually

  2. flag the option “continuous calibration by GPS”

  3. Let the GPS 3D-fix satellites and wait some minutes ,

- if problem is not solved, see the solution described above.


PROBLEM: No sound is coming from Variometer.


- control the volume

  1. control not to have silenced the instrument (an icon with a speaker appear in the control bar)

  2. enter in the audio menu and control to have an audio file active and control it’s volume;

  3. control that all curves of CSS cover from 0 to +12 m/s

  4. control not to have covered the instrument’s speaker area with stickers or other material;




PROBLEM: The fix is slow


The GPS takes from few seconds to some minutes to fix the satellites, depending on some different situations. If the fix is very slow even in the take off area, and your last update of the instrument is from 2016 year on, try to apply the solutions described below.


PROBLEM: The GPS does not fix satellites


- If (i) the device is new (ii) you moved many km from your usual area (iii) the device has been switched off for long time: it could take more time to the first 3D-fix: move in an open air area and switch on the instrument again.

- Are you are inside a building or do you have many concrete buildings around? Try to see if the 3D-fix in open air works as usual.

- Did you update the device? The updates from January 2016 let the GPS fix more stable and quick.


- Enter in the GPS status menu (setup > info> gps status). You will see a round “target” (graphical representation of the sky). Satellites are showed as little balls. At the moment the device is switched on, the target could be empty and balls are grey colored. As soon as the GPS find a satellite, the same appears inside the target, the ball is red with the number assigned to the satellite. As soon as the GPS fixes the satellite, the ball becomes green. When 4 satellites are green, the 3D fix is done.

  1. If you see that 4 or more satellites are green but the device does not work (example: when you move the speed remains 0) contact Compass.

  2. If satellites are red colored inside the target but they do not turn to green, the unit should not have hardware problems: the problem should be momentary.

  3. Only for the PRO model (not EVO or Easy Pilot): put the instrument in charge for some hrs: the instrument must be switched on while charging. The PRO model has a battery specially dedicated for the GPS and if it is completely discharged the GPS does not work properly. To charge it the instrument must be switched on.


PROBLEM: The 3D fix is not stable.


- Did you update the device? The updates from January 2016 let the GPS fix more stable and quick.

- Do you use another device close to the CP-EVO CP-PRO or Easy Pilot? Some devices can emit frequencies that disturb GPS 3D-fix.

  1. In some cases, we noticed that the problem was caused by a Compeo or Compeo+ positioned close to the Compass unit on the left side of the cockpit: the solution is to reverse the position of the instruments in the cockpit.

  2. Some VHF radios may be too close to the Compass device put the radio away from the cockpit or squelch da alzare disturb alla radfio;

  3. Some telephones (rare) could disturb the GPS fix if they are stored inside the cockpit.

In some defined areas the GPS could be disturbed by antennas or other devices or factories at ground (example: we noticed that flying over a foundry area the GPS was very disturbed).


PROBLEM: I see the information “GPS Stauts = 5”

SOLUTION: don’t worry, that’s not a problem.





PROBLEM: The instrument disturbs my radio.


  1. put the radio away from the cockpit;

  2. increase the squelch ratio of the radio

  3. modify a little your custom displays (we noticed that in some rare cases the radio is disturbed when a display is activated, for example the thermal display. The solution was simply to modify a little the dimensions of the analog variometer, or some other fields)




The instrument estimates the arrival altitude or height at goal, at a waypoint or at any point at terrain, by the G.O.T. software. If some conditions change significantly while gliding, the instrument, of course, cannot foresee them. As consequence, sometimes the esteem of the G.O.T. could be wrong. The most of cases, anyway, the G.O.T. esteems very precisely. If you notice that in most cases the G.O.T. is not precise, read the following advices to set your instrument.

PROBLEM: I arrive too short or to long at goal, at a waypoint, or the G.O.T. estimates not precisely.


  1. control that the polar you are using is correct (attention: do not place too much confidence in the polar data that can be found in the web, in the forums or that other pilots declame! We noticed that in many cases Polars are too optimistic). Maybe your Polar is too optimistic or too negative;

  2. control that the Altitude is correct (if you do not use the auto calibration from GPS);

  3. control that a terrain map is active and properly uploaded in the terrain folder for your flight area;

  4. control that the terrain map file you are using is not corrupted;

  5. control the 3D-fix is active and stable.



GPRS (live tracking)


PROBLEM: The GPRS doesn’t work:

  1. control the APN you entered is the correct one. The APN can be found on website of the telephonic company of your SIM Card (example: the APN “send.ee” is the correct one for Onesimcard service, but it does not work with other services / telephone companies).

  2. control the username, the password and the website you entered are the correct ones and not have made a mistake while typing them;

  3. control that the checkboxes “start live tracking” or “start live tracking automatically” are flagged;

  4. control your SIM card credit or control the contract term of your SIM Card is not expired;


PROBLEM: The GPRS looses the signal

SOLUTION: The problem depends on the signal coverage of the telephone company used.




PROBLEM: The time zone displayed is not correct


- time can be set in the general setting menu: “GPS time offset”. Remember to select “East” or “West” depending on the area of the world you are using the instrument: remember that if you move, example, from Europe to USA, you have to change from “East” to “West” the time zone.

- Remember that many countries introduced the daylight saving time.





PROBLEM: When I download the track, it is not defined and/or fluid

SOLUTION: enter in “track menu” > “settings of export IGC file”. Aelect a shorter output interval (but be careful: if you choose “all points” XContest may not accept the track)


PROBLEM: XContest doesn’t accept my track / XContst accepts my track but I’ve not my score points

SOLUTION: enter in “track menu” > “settings of export IGC file”. Select a the track output interval at 1 point/5 seconds (note that in any case the instrument will not cut any relevant point of the track).


PROBLEM: I cannot download the track / I cannot transform the track in IGC Format


-Enter in “Flight Logs” > you will see the track list;

- Select the track you want to download (just click on it once);

- Press the button “Export IGC File”;

- The instrument will ask you to choose between: (i) IGC to USB memory (to save as IGC in the USB memory of your instrument); (ii) IGC to SD Card (to save the IGC file inside the SD Card memory); C-Pilot PRO Format;

- Once the track is saved, you have 2 options:

  1. if you saved in USB storage, you connect the C-pilot by USB cable (see user’s manual) and drag & drop the IGC file from the folder “tracks” to your Computer’s desktop (or any different Computer’s folder)

  2. If you saved in SD Card: connect the SD Card to the Computer (if your PC gas not a slot, you may use a common SD-USB adaptor) and then drag & drop the IGC file from the folder “Tracks” to your Computer’s desktop (or any different Computer’s folder)


SOLUTION: Check the internal memory of your computer: it may be full. If yes, backup the instrument’s files and then cancel some files to save space. Meanwhile you can export IGC by the SD Card.


PROBLEM: I cannot export the track in C-Pilot format

SOLUTION: Normally you don’t need this if you have not a particular reason: you should export in IGC format.




PROBLEMS: (i) I cannot enter a new competition task; (ii) I’m not able to transform a track file to IGC; (iii) the instrument freezes (iv) I’m not able to connect the Instrument by USB;


The first thing to check, if you are not able to connect the Instrument, is that the USB cable is the original one (not all USB cable work).

If you are sure the cable is original, these problems may be caused by a malfunction of the USB memory (clusters, damages …). Normally it is caused because the instrument, was not disconnected safely from the computer. In this case you have 2 ways for solving the problem: one is soft and one is more radical.

  1. connect the Instrument by USB to a Windows or Linux computer operative system (Apple does not work for this because it hides some files) and control the files and the folders that will appear. The Compass file extensions are: “.txt” (Airspaces and colormaps) “.aud” (audio) “.car” (cartography) “.dsp” (display) “.pol” (polar) “.RTE” (Routes); “.wpt” .”geo” (Waypoints) “.task” (tasks) “.tif” (terrain). If you see different files, specially the ones that appears as uncommon or with strange names or extensions, they can corrupt the correct use of your instrument. Cancel that files and try to use the instrument again.

  2. If the problem is not solved, it may be necessary to format the USB memory and/or the internal memory. This procedure usually definitively solves the problem but the instrument settings and files will be reported to the original manufacturing, as when you received the instrument. It is important to have a backup before formatting USB (!). To format the memory: enter in the “Configuration Menu” and scroll the menu: at the end you will find the buttons for formatting the USB or/and the internal memory. Just press and confirm.


PROBLEM: I can’t connect the Instrument by USB

SOLUTION: If in your computer the instrument appears as “unknown device” and you are not able to enter, it could be necessary to repair and restore the USB memory.

  1. press the right button of the mouse and choose the option format at FAT32

  2. enter in the “Configuration Menu” and scroll the menu: at the end you will find the buttons for formatting the USB or/and the internal memory. Just press it and confirm.

Note that the Instrument’s settings and files are reported to the original manufacturing: It is important to have a backup of personal files!


PROBLEM: I cannot copy a file from my computer to the Instrument


  1. Be sure that when you connect the instrument by USB you have not selected the “read only mode” (the read only mode is strongly recommended when you download your tracks, especially during competitions, but this mode lets you transfer only IGC track files and no other files).

  2. Be sure the USB cable is original (not all USB cables fit)

  3. Maybe your USB memory is corrupted (see above)




Note that it is strongly recommended to backup regularly your instrument, in order to save your files, displays, sounds, settings, customizations … and flights.

PROBLEM: How can I backup the instrument?


  1. connect the instrument by USB (C-Pilot PRO > Connections > USB Connection)

  2. choose the option “NO” (it means that you want your connection not to be “read only mode”)

  3. Copy the entire C-PilotPRO folder into your Computer’s memory.

Now all files are copied and saved into your personal computer: You will have a full copy of the CPilotPRO directory, ready to be uploaded again in the Compass instrument, if you will need it.




PROBLEM: The SD Card does not work


If the SD Card is not properly working or the instrument cannot read it’s data, the SD Card icon in the top bar of your instrument will appear red colored. If it appears dark grey, the instrument is reading the SD Card.

To solve the problem:

  1. be sure that the lever protection of SD Card is “off”;

  2. be sure the SD Card is perfectly inside the slot (you should feel a little “click” when it is correctly stored) and in case of doubt store it again inside. Note that it could happen that the SD card accidentally comes out of the slot because of a blow or a pressure. In this case the SD Card icon does not appear in the top bar of your Instrument;

  3. if you are using an SD Card previously used by another device, we recommend to format it to restore it as new before and virgin using with Compass devices.

  4. If the SD Card is new or formatted virgin as new, it must be previously formatted for the Compass use (see the user’s manual). Just insert the virgin SD Card into the Instrument and it will ask you to format it. It takes a second.

  5. be sure that the SD Card is exclusively dedicated to the Instrument (does not contain different files)

  6. in some (very rare) cases the Instrument is not compatible with the SD card: try with another Card.


PROBLEM: I’m not able to format the SD Card for the Compass Instrument


If you have followed the procedure explained into the user’s manual but you don’t succeed after 2 or 3 attempts:

  1. in some (very rare) cases the Instrument is not compatible with the SD card: try with another Card.

  2. Be sure that the protection lever of the SD card is in “off” position.

  3. Be sure that the SD Card is virgin or formatted as virgin before the first use with Compass;

  4. Contact sales@compass-italy.com We will send you the folder to copy inside your virgin SD card to bypass the formatting procedure.




PROBLEM: The display is too dark

SOLUTION: Control not to have selected the power saving mode (the display should be in auto backlight level: find the option in the Configuration Menu).


PROBLEM: I cannot use the Touch screen and/or I cannot press any button or the pressure area of the screen does not correspond to the desired button

SOLUTION: Just calibrate the touch panel of your instrument. Press the “on” button of the Instrument and then press it again within 5 seconds. You will enter in the calibration panel page. Touch the center of any target that will appear (just touch it with your finger or the point of the pen … and not drag). For further explanations see the user’s manual.


PROBLEM: The instrument does not automatically switch into the thermal mode


  1. control that you are not in Manual mode display (the central button of the top bar menu must show an icon “A” and not “M”. If you are in manual mode, press the same button and press the button “Auto”;

  2. control that a display has been associated with thermal condition: in the “Display” Menu page you will see that a “Condition” is to be associated with a “Display”. This means that the intrument undertsands that when you enter in a thermal a certain custom display is to be showed (see the user’s manual).






PROBLEM: I do not see the Airspaces


- Enter in the Map menu and control that the checkbox “show Airpaces” is flagged as active.

- Remember that your instrument can store many different Airspeces files (custom files, different countries or areas). Before using an Airspace the file must be active. Enter in the Airspaces menu and control to have displayed the Airspaces list of your area (i.e. the airspace file is activated). If not, press the button “Airpaces Menu” (upper left side of screen) and then press “Open File”. At this point just choose the desired Airspace file to activate it.




PROBLEM: Competition Task does not start (the task navigation does not work)


  1. remember to press the button “start navigation” before to fly;

  2. control if the start “open time” is correct;

  3. control if “race to goal” option has been selected

  4. a waypoint must be selected as “start cylinder”;

  5. a waypoint must be selected as “goal”.


PROBLEM: When I enter the Start Cylinder, the instrument remains into start mode:

  1. start “open time” is not correct

  2. you selected the cylinder “on entry” instead of “on exit” or vice versa

  3. you did not select any cylinder as “start”,

  4. you did not press the button “start navigation” befor flying.


PROBLEM: The instrument in a competition task does not enter in thermal mode before the start.

SOLUTION: that’s not a problem. This is normal.


PROBLEM: The triangle Assistant does not start.

SOLUTION: you have to press the button “start navigation” before to fly;




PROBLEM: The map does not automatically zoom in or out while navigating to a waypoint (or in competition) or to a triangle sector


Remember that if you zoom in or zoom out the map by touching the zoom display areas, the instrument switches from “Auto Zoom” mode to “Manual Zoom” mode. As consequence, the Autozoom is not active. To activate the Auto-Zoom just press the map in the center of right side of the map itself. A letter “A” (that means Auto) will appear in the low right area of the map.

Control if an “A” is displayed in the low right part of the screen. If not enable the autozoom by touching the right side of map in the central zone.


PROBLEM: I do not see the line to next waypoint

SOLUTION: Enter in Map menu and flag the checkbox “show line to next waypoint”


PROBLEM: I do not see heading line

SOLUTION: Enter in Map menu and flag the checkbox “show heading line”


PROBLEM: Do not see the track displayed

SOLUTION: enter in Map menu and control the checkbox "show track” is flagged


PROBLEM: I see the track only in lift (only the red/light blue points)

SOLUTION: Enter in the Map menu and deactivate the option “Show track only in lift”


PROBLEM: The map orientation appears not correct

SOLUTION: Touch the central right area of the map displayed in order to go back to the Auto mode;

SOLUTION: Enter in the Map menu and select the option “track up” or “north up” (depends on your choice.




PROBLEM: The safety rope of the instrument is too short.

There is a safety reason for this! We recommend not to add more (if an accident occours the instrument may hit your face).