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UF V (E3) 10/2020 Page 62/119
14.4.6 Messages referring to temperature sensor failure
The alarms occur immediately.
• Audible alarm (buzzer)
• Switching the zero-voltage relay alarm output
Failure of the temperature sensor for interior measurement:
• Alarm message “Inner temp. sensor”, collective alarm icon
• Cause: defective inner temperature sensor
• Temperature control continues using the safety controller temperature sensor
Failure of the safety controller temperature sensor:
• Alarm message “Safety control sensor”, collective alarm icon
• Cause: defective safety controller temperature sensor
Failure of both the temperature sensors for interior measurement and the safety controller:
• Temperature display shows “- - - - “ or “<-<-< “ or “>->->“
• Alarm messages “Inner temp. sensor” and “Safety control sensor” alternating, collective alarm icon
• Cause: both the temperature sensors for interior measurement and the safety controller are defective
• Refrigeration is turned on permanently.
Failure of temperature sensors of the refrigerating machine:
• Alarm message “Condensate temp. sensor”, collective alarm icon
Cause: defective temperature sensor on the condenser of the refrigerating machine
• Alarm message “Cascade temp. sensor”, collective alarm icon
Cause: defective temperature sensor on the cascade of the refrigerating machine
• Alarm message “Ambient temp. sensor”, collective alarm icon
Cause: defective temperature sensor for ambient temperature or air intake of the 1
st
stage cooling
• Refrigeration is turned on permanently.
Actions:
• Please contact BINDER Service.
• If the temperature rises, i.e. the refrigerating machine is defective (safety controller temperature alarm
and / or tolerance range alarm):
• Transfer the material to another freezer.
• Turn off the freezer.
• If necessary, clean and disinfect the freezer.
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