Siemens ULTRAMAT 23 Series Equipment Manual page 182

Error and system messages
11.2 Faults
Message
Measured value O2 too low
Measured value display: *****
Fault at analog output
General fault of all IR channels,
Measured value display: *****
Fault of addresses for IR channels
AUTOCAL drift beyond tolerance
AUTOCAL drift beyond tolerance (UV)
EEPROM error
UV EEPROM error
Channel 1, 2 or 3 not calibrated
Component 1, 2, 3 or 4 selected but
not calibrated
Source voltage outside tolerance (IR)
UV module voltage beyond tolerance
UV LED current beyond tolerance (1-4) Light source (LED) faulty
182
Possible causes
O sensor faulty or no longer usable as
2
result of aging
O sensor zero not calibrated
2
Output component could not be initial‐
ized when switching on
Limits were violated when calibrating the
analog section
Chopper faulty
Plug-in jumper on detector for detection
of components not OK
The cable of the detector has no contact
Cable of detector faulty
Detector contaminated
Receiver chamber faulty
IR source power too low
UV analyzer chamber is dirty or defective
Checksum not OK
Read character does not correspond to
written character
Checksum not OK
Read character does not correspond to
written character
Calibration of full-scale value / sag missing Perform a customer calibration, if the
Calibration of full-scale value / sag missing Perform a customer calibration, if the
IR source not OK
Motherboard faulty
Supply voltage varies
Power supply unit faulty
Cables of the UV module faulty
Power supply of the UV module faulty
Remedy
Replace the O sensor as described in sec‐
2
tion Replacing the electrochemical oxy‐
gen sensor (Page 173)
Calibrate the zero point of the O
as described in section Calibration: Elec‐
trochemical oxygen measuring range
(Page 117)
Check that the plug is correctly connected
to the detector (the plug must latch in
twice).
message has not disappeared the service
technician must perform a 3 point cali‐
bration using a calibration gas mixer.
message has not disappeared the service
technician must perform a 3 point cali‐
bration using a calibration gas mixer.
Take appropriate measures so that the
supply voltage remains stable within the
tolerance values permissible for the ana‐
lyzer.
Error in optical component.
Replace the UV module.
Equipment Manual, 04/2022, A5E37100388-012
sensor
2
ULTRAMAT 23