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o
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Troubleshooting
UV C sensor signal smaller than alarm threshold
12345h
12345
53 W/m
2
55
50
Message: Flashing down arrow
Possible cause
Formation of deposits on the lamp protection tube and/or the UV C sensor
Remedy
왘
Clean the lamp protection tube and the UV C sensor
Possible cause
Deterioration of the UV transmission of the water to be disinfected
Remedy
왘
Improve water quality
Possible cause
UV lamp at the end of the lamp’s service life
Remedy
왘
Install new UV lamp
Possible cause
UV C sensor not calibrated
Remedy
왘
Calibrate UV C sensor
UV C sensor signal smaller than safety threshold
45 W/m
2
12345h
12345
55
50
Message: Flashing double-headed down arrow
Possible cause
UV lamp has not yet reached its operating temperature
Remedy
왘
wait until the UV lamp has reached its operating temperature
For application where it is required to suppress the error message by the control software, this
error message may have the following further causes.
Possible cause
Metering of a highly UV-absorbent oxidant
Remedy
왘
wait until the oxidant has degraded
Possible cause
Failure
Remedy
왘
see following section ”System in error mode“
System in error mode
45 W/m
2
12345h
12345
55
50
Message: Flashing display
IMPORTANT
After 60s, the control below goes to the next error message!
Possible cause
Formation of deposits on the lamp protection tube and/or the UV C sensor
Remedy
왘
Clean the lamp protection tube and the UV C sensor
Possible cause
Deterioration of the UV transmission of the water to be disinfected
Remedy
왘
Improve water quality
Possible cause
UV lamp at the end of the lamp’s service life
Remedy
왘
Install new UV lamp
Possible cause
UV lamp faulty
Remedy
왘
Install new UV lamp
Possible cause
UV C sensor not calibrated
Remedy
왘
Calibrate UV C sensor
Troubleshooting
BA_DS_011_02_07_GB.p65
12.02.2007, 12:03 Uhr
20
