BINDER UF V 500 - Manual (Page 92)

UF V (E2+E2.1) 03/2013 page 92/112
16. Troubleshooting
Fault description Possible cause Required measures
Refrigerating performance
Unit without function.
No power supply.
Check connection to power sup-
ply.
Wrong voltage.
Check power supply for voltage
of 115V / 208 - 240 V / 230V.
Unit fuse has responded. Contact BINDER service.
Controller defective. Contact BINDER service.
No refrigerating performance
after turning on the chamber.
Safety controller responds.
Limit temperature reached. Safe-
ty controller (chap. 9) set too low.
Hit the “EXIT” button of the con-
troller. If appropriate, select suit-
able limit value.
Safety controller (chap. 9) defec-
tive.
Contact BINDER service.
Chamber refrigerating perma-
nently, set-point not held.
Semiconductor relay defective.
Contact BINDER service.
Controller defective.
Controller not adjusted, or ad-
justment interval exceeded.
Calibrate and adjust controller.
Chamber refrigerating perma-
nently, set-point not held.
Alarm message“992” or “998” or
“999”
Refrigerating machine in continu-
ous operation (see chap. 10.8).
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
correctly on the controller.
Set temperature set-point correct-
ly on the controller
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 A21 (cooling
cycle – early warning system)
Cooling cycle not running proper-
ly.
Contact BINDER service.
Alarm message A31 (Ambient
temperature alarm: Ambient tem-
perature > 32 °C)
Place of installation too hot.
Select cooler place of installation
or contact BINDER service.
Ventilation slots are blocked.
Make sure to have free air ac-
cess to the device at the front
and bottom. Keep clear the ways
of the exhaust air to the top and
side. The warm exhaust air must
not be sucked in at the front
again.
Freezer positioned too close to
the wall (spacers not mounted or
twisted).
Install / check the spacers (chap.
4.2).