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UF V (E3) 10/2020 Page 96/119
Fault description
Possible cause
Required measures
Refrigerating performance (continued)
Alarm message “Temp. range”
Current actual temperature value
outside the tolerance range.
Operation temporarily possible.
Check the tolerance range set-
tings. With other error messages
remove the respective cause.
Alarm message “Inner temp.
sensor”
Inner temperature sensor defec-
tive. Control continues using the
safety controller temperature sen-
sor
Operation temporarily possible.
Contact BINDER service.
Alarm message “Safety control
sensor”
Safety controller temperature sen-
sor defective
Operation temporarily possible.
Contact BINDER service.
Temperature display shows
“- - - - “ or “<-<-< “ or “>->->”
Messages alternating:
Inner temp. sensor and Safety
control sensor
Inner temperature sensor and
safety controller temperature sen-
sor defective. Refrigeration is
turned on permanently.
Contact BINDER service.
Alarm message “Condensate
temp. sensor” or “Cascade
temp. sensor” or “Ambient temp.
sensor”
Failure of Pt100 temperature sen-
sor. Refrigerating machine in con-
tinuous operation (see chap.
14.4.6).
Contact BINDER service.
No or too low refrigerating per-
formance.
Pt 100 sensor defective.
Contact BINDER service.
Refrigerating system defective.
Semiconductor relay defective.
Temperature set-point not set cor-
rectly on the controller.
Set temperature set-point cor-
rectly.
Ambient temperature too high
> 32 °C (chap. 3.4).
Select cooler place of installation.
Compressor not switched on.
Contact BINDER service.
No or not enough refrigerant.
Too much external heat load.
Reduce heat load.
Alarm message “Continuous op-
eration”
Cooling system error.
Contact BINDER service.
Semiconductor relay defective.
Controller defective.
Alarm message “Compressor
defective”
Cooling system error.
Turn off the chamber and contact
BINDER service.
Condenser fan defective.
Alarm message “Condenser
temp.”
Condenser air filter soiled.
Clean / replace the condenser air
filter (chap. 25.2.1).
Condenser soiled.
Clean the condenser (chap.
25.2.2).
Ventilation slots are blocked.
Make sure to have free air access
to the device at the front and bot-
tom.
Place of installation too hot.
Select cooler place of installation
or contact BINDER service.
Chamber positioned too close to
the wall (spacers not mounted or
twisted).
Install / check the spacers (chap.
4.2).
Humidity
Icing at the walls of the inner
chamber
Long time of continuous operation.
Defrost the chamber (chap.
25.2.3)
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