Message Possible causes Remedy
Supply voltage beyond tolerance Supply voltage varies Correct such that the supply voltage re‐
mains stable within the tolerance values
permissible for the analyzer.
Power supply unit on motherboard faulty
Device temperature beyond tolerance Ambient temperature too high or too low Provide sucient ventilation or air condi‐
tioning.
UV module temperature beyond toler‐
ance
Ambient temperature is too high or too
low
Provide sucient ventilation or air condi‐
tioning.
Heating elements of the UV module faulty Replace the UV module
Cooling elements of the UV module faulty Replace the UV module
Air pressure beyond tolerance Pressure sensor faulty Check the pressure at the connecting
socket, pull o the hose if necessary
No ow during 'measuring' Sample gas path blocked or leaky Clean or replace the blocked parts (hose,
lter etc.). If the problem persists, contact
Technical Support.
Pump not running Start the pump as described in
section Conguration: Inputs/outputs/
pump (Page 136)
Pump capacity too low Increase the pump capacity as described
in section Parameters: Pump/LCD con‐
trast: Pump (Page 133)
Pump faulty Pump must be replaced. Contact Techni‐
cal Support.
Pressure switch faulty Pressure switch must be replaced.
No data for temperature compensa‐
tion
Temperature compensation not comple‐
ted successfully
New components have been loaded
EEPROM has been initialized Download the factory data as described
in section Conguration: Special func‐
tions: Factory data/reset/units: Load fac‐
tory data (Page 151)
No ow during AUTOCAL Sample gas path blocked or leaky Clean or replace the blocked parts (hose,
lter etc.). If the problem persists, contact
Technical Support.
Pump not running Start the pump as described in
section Conguration: Inputs/outputs/
pump: Pump at CAL/MEAS (Page 144)
Pump capacity too low Increase the pump capacity as described
in section Parameters: Pump/LCD con‐
trast: Pump (Page 133)
Pump faulty Pump must be replaced. Contact Techni‐
cal Support.
Pressure switch faulty Pressure switch must be replaced.
Error and system messages
11.2 Faults
ULTRAMAT 23
Equipment Manual, 04/2022, A5E37100388-012 181