Binder KBF-S - Page 71

KBF-S / KBF-S-UL (E6) 11/2021 page 71/95
Fault description
Possible cause
Required measures
Humidity
Humidity fluctuation:
Control accuracy of +/- 3 % r.h. is
not reached.
Door gasket defective.
Replace door gasket.
Door opened very frequently. Open doors less frequently.
Humidity fluctuation, together
with temperature fluctuation >
1 °C with a set-point approx. 3 °C
above ambient temperature.
Place of installation too hot.
Select cooler place of installation
or contact BINDER service.
No or low dehumidification.
Capillary tube blocked
Contact BINDER service.
Not enough refrigerant.
Humidity control turned off.
Turn on humidity control (chap.
8).
Icing at the evaporator plates.
Set-point was too long below am-
bient temperature.
Defrost the chamber (chap. 20).
Condensation at the walls of the
inner chamber.
Combination of temperature/hu-
midity values not in the optimum
range (see temperature humidity
diagram, Figure 18)
Select combination of tempera-
ture/humidity values in the opti-
mum range (chap. 19).
Set-point was too long below am-
bient temperature, icing in the
preheating chamber.
Defrost the chamber (chap. 20)
Controller
No chamber function
(dark display).
Main power switch turned off. Turn on the main power switch.
Menu functions not available.
Menu functions not available with
current authorization level.
Log in with the required higher
authorization.
No access to controller
Password incorrect.
Contact BINDER service.
Controller does not equilibrate to
entered setpoints
Humidity control turned off.
Turn on humidity control (chap.
8).
Humidity alarm when operating
without water supply.
Humidity control turned on.
Turn off humidity control (chap.
8).
Acknowledging the alarm does
not cancel the alarm state.
Cause of alarm persists.
Remove cause of alarm. If the
alarm state continues, contact
BINDER service.
Alarm message:
- - - - or <-<-< or >->->
Sensor rupture between sensor
and controller or Pt 100 sensor
defective.
Contact BINDER service.
Short-circuit.