BINDER UF V 500 - Manual (Page 93)

UF V (E2+E2.1) 03/2013 page 93/112
Fault description
Possible cause Required measures
Refrigerating performance (continued)
Alarm message A41 (cooling
cycle operating permanently > 72
hs.)
Door not shut tightly. Check if doors are closed.
Frost on door gasket.
Defrost the door gasket with the
ice scraper.
Door gasket defective. Contact BINDER service.
Door opened very frequently. Open doors less frequently
Place of installation too warm.
Select cooler place of installation
or contact BINDER service.
Introduction of too warm or too
large amount of material.
Cool down material before intro-
ducing and / or load in smaller
portions.
Too low temperature set-point set
on the controller.
Set temperature set-point correct-
ly on the controller
Controller not adjusted, or ad-
justment interval exceeded.
Calibrate and adjust controller
Semiconductor relay defective.
Contact BINDER service.
Controller defective.
Alarm message A51 Cooling system error Contact BINDER service.
Alarm message A52
Condenser air filter soiled.
Clean the condenser air filter
(chap. 14.4.1).
Condenser soiled.
Clean the condenser (chap.
14.4.2).
Ventilation slots are blocked.
Make sure to have free air ac-
cess to the device at the front
and bottom.
Alarm message A53 Condenser fan defective.
Turn off the freezer and contact
BINDER service.
Safety controller responds.
Limit temperature reached.
Check setting of temperature set-
point and of safety controller. If
appropriate, select suitable limit
value.
Too much external heat load. Reduce heat load
Controller defective.
Contact BINDER service. Safety controller defective.
Semi-conductor relay defective.
Humidity
Icing at the walls of the inner
chamber
Long time of continuous opera-
tion.
Defrost the unit (chap. 14.4.3)
Controller
No unit function
(dark display).
Power failure. Display mode
“Standby” active.
Press any key on the controller
display.
Main power switch (key switch) is
off.
Turn on the key switch (6).
No entries to controller keypad
possible.
Keyboard locking activated.
Unlock keyboard locking (chap.
8.4).
No access to menu “USER”. User code incorrect. Contact BINDER service.
EXIT button does not cancel the
notifying or alarm indication.
Cause of disturbance not re-
moved correctly
The EXIT button permits resetting
notifying or alarm messages for
temperature only with in a toler-
ance sector of +/- 2 °C.
Remove cause of disturbance. If
the EXIT button still does not
cancel the indication, contact
BINDER service.