Fault Messages - Graf oneAdvanced Operation Manual

11.2.2 Fault messages

Fault messages appear when the system is not operating properly and needs to be checked.
This may require the expertise of a specialist. The program continues running in the back-
ground, possibly with restrictions. The status LED lights up yellow, and also a warning tone
sounds. Confirmation deactivates the warning tone temporarily. Not until after the fault has been
remedied can the event be acknowledged at [OK]. An entry is made in the log book.
Note
If you are unable to remedy the fault yourself or at short notice, you can at least disable the
acoustic alarm temporarily in the menu "Settings" (see Subsection 4.4.5 on page 39)
Please note: This setting is not reset automatically.
code Event
S.1 Max level
S.2 Min level
S.3 Pressure sensor P1
S.4 Pressure sensor P2
S.6 Cooling fan 1
S.7 Cooling fan 2
S.8 Cooling fan 3
S.9 Temperature sen-
sor
S.10 USB
S.11 Min valve pressure
1–4
S.13
S.15
S.17
S.12 Max valve pressure
1–4
S.14
S.16
11. Fault messages and rectification
Meaning
The maximum (set) level has been
exceeded; the treatment process
continues for the purpose of lower-
ing the high water level.
An unusually low level has been
measured; for safety reasons, the
treatment plant switches back to
purely time-controlled operations
and no longer takes any level
measurements
The pressure sensor has encoun-
tered a problem; the treatment
plant switches back to purely time-
controlled operations and no longer
takes any level measurements;
pressure can no longer be moni-
tored.
Short circuit or break at the fan out-
put
Temperature sensor defective or
not connected
The USB storage medium has en-
countered a problem. (E.g. defec-
tive file system or memory full)
The compressed air monitor de-
tects an unusually low pressure at
valve 1–4. Manual examination
necessary.
The compressed air monitor de-
tects an unusually high pressure at
valve 1–4. Manual examination
100 / 137
Measures, remedy
Check in the tank for back-
flow or whether the water
level has regulated itself
independently
If necessary, notify special-
ist
Check in the tank whether
the water level is unusually
low
If necessary, notify special-
ist
Notify specialist
Notify specialist
Plug sensor firmly in con-
trol unit
Notify specialist
Try another USB stick
In manual mode, run the
compressor with the valve
and check for air leaks
Notify specialist
In manual mode, run the
compressor with the valve
and check for any hose
kinks or blocked valves