GOK SmartBox 4 - Function Check; Maintenance; Restoration

SmartBox
®
4 / SmartBox
®
4 PRO
26 / 28 part no. 28 400 57 d
Error regarding GSM modem / telecommunication functions
Error M0
Modem not active
Error M1
Communication error with the internal modem. (The SmartBox
®
will
automatically perform reset and re-attempt connection).
Error M2
SIM card faulty or illegible
Error M3
PUK must be entered (3 failed attempts to enter the PIN. The SIM card must
be inserted into a mobile phone and unblocked by means of the PUK.
Error M4
No credit remaining (only for prepaid card)
Error M5
No net found (bad reception, possibly additional external antenna?)
Error M6
Net error or other error when sending an SMS
Error M7
Log-in not yet performed
Error M8
Dial block (because of too many log-in errors, login is attempted only once per
day after 7 days, and after 255 days only once on activation or on manual
activation of the OK button)
Error M9
Target telephone number has not been programmed yet. (It is required for
sending an SMS, for example for sending the test SMS)
FUNCTION CHECK / MAINTENANCE
We recommend that you check the displayed litre values once per year to make sure that they
are correct.
For a simple check, pull the level probe up by its cable so that it hangs above the liquid.
In this status the display device should show 0 litres (+ tolerance).
The probe signal can be checked with menu step "22. Test Current"
At 0 cm fill level  approx. 3.7 – 4.3 mA.
In the event of a considerable deviation, we recommend a replacement. New probe.
New probe/ replacement of the operating medium
If the installation of a new probe is required and/or a change in the operating medium takes
place, then firstly, all of the “standard values” under menu step “9th zero point probe“ must be
reset to the factory setting!
It is also necessary to check, and if required, correct all further set values.
RESTORATION
If the actions described in TROUBLESHOOTING do not lead to a proper restart and if there is
no dimensioning problem, the product must be sent to the manufacturer to be checked. Our
warranty does not apply in cases of unauthorised interference.
In case of repeated errors or alarm messages (relay output) while the tank content does not
reach / remains below the set fill level alarm threshold at the probe element, check the
connection line of the signal and probe element for breakage or short-circuit, re-install if
necessary.