JUMO 902940 DELOS T Electronic Temperature Switch with Display and Analog Output Operating Manual - Manual (Page 69)

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8 Overcoming errors and malfunctions
8.1 Possible errors
Display Possible causes Measure
• Overrange
or underrange
• Probe break
Check temperature and/or probe.
Device error
•
1 = Internal
communication error
• 2 = Error, analog output
• 3 = Short circuit,
switching output 1
• 4 = Short circuit,
switching output 2
• 5 = VCC 8 V outside the
working range
• 6 ... 8 = Internal
communication error
• 9 = Invalid configuration
1, 6, 7, 8: Contact the service.
2: Check ambient temperature.
Check output for cable break. Output
load too high (for current output) or
too low (for voltage output).
3, 4: Check the switching output.
5: Check voltage supply.
9: Check the configuration.
Display overrun:
Upper display: „- - - -“
Bottom display: Parameter name
Value is smaller than -9999
or exceeds +9999. Check switching output.
Check voltage supply.