AC STAG-4 QBOX BASIC User Manual page 36

Section "Active errors" lists the codes of current faults detected by the controller. If the cause of the
fault is eliminated, the entry is moved to the "Error records" section. In other words, this means that a
defect had been detected, but it is not currently active.
A "Delete" button for erasing recorded controller errors from the memory is located in the bottom part
of the "Errors" tab, below the "Error records" section.
The following errors may appear during operation:
Description in AC STAG application
Gas injector missing
Low gas pressure
High gas pressure
Supply voltage too low
Gas temperature sensor missing
Reducer temperature sensor missing
Gas temperature sensor circuit
shorted
Reducer temperature sensor circuit
shorted
Injector supply circuit failure
Solenoid valve supply circuit failure
Solenoid valve missing
Peripherals supply circuit failure
Connection with the switch failed
Communication with the switch lost
Failure /overload of AUX_12V circuit
Short-circuit or failure of the supply
circuit for gas level indicator
Short-circuit in manifold pressure
sensor
No manifold pressure sensor
5
applies to new hardware controllers (STAG-300 QMAX PLUS, STAG-4 QNEXT PLUS, STAG-4 QBOX PLUS
from version 3/B0)
AC S.A. all rights reserved. Under penalty of law and/or liability claims it is forbidden to copy, publish, distribute, make available and/or use in any way all or any part of information contained
Open circuit or fault of the specified gas injector
Gas pressure dropped or kept below the allowed low
limit within the specified time
Gas pressure 2x higher than the operating pressure for
60 seconds (usually associated with reducer problems)
Controller supply voltage decreased below 9 [V] (usually
associated with a failing battery)
Disconnected or disrupted circuit of the gas temperature
sensor
Disconnected or disrupted circuit of the reducer
temperature sensor
Gas temperature sensor shorted to vehicle grounding
Reducer
grounding
Controller's circuit for injectors supply failed
Overloaded or defective circuit or solenoid supply
Disconnected or disrupted circuit of the solenoid supply
Overloaded circuit of peripherals supply (PS-02 sensor,
WPG-H gas level indicator)
LED 400/LED 401 switch not connected
Connection with LED 400/LED 401 switch interrupted
AUX 12V circuit is overloaded or short-circuited to the
5
ground (connected load is too high).
Gas level indicator (WPG) circuit is overloaded or short-
5
circuited to the ground (connected load is too high).
Manifold pressure sensor shorted to vehicle ground.
Not connected or open circuit of manifold pressure
sensor.
within this document, in particular photographs, drawings, illustrations, trademarks, etc
36
Meaning
temperature sensor shorted to vehicle