Fault
code
Fault Comment
A26
Faulty temperature sensor
(independent) in wash
chamber.
Independent. The temperature (-B06) is <0°C or >130°C.
Possible action:
a. Check the temperature sensor (for open-circuit or short-circuit)
A27
Faulty temperature sensor
in drying unit
The temperature (-B04) is <0°C or >130°C.
Possible action:
a. Check the temperature sensor (for open-circuit or short-circuit)
A28
Faulty temp sensor in
wash chamber. (Too low
because of a heating
fault.)
Wash temperature (-B05) has not risen by at least 10 degrees C
after eight minutes’ washing.
Possible action for electrically heated machine:
a. Check that there is power on all phases up to the elements.
b. Check the voltage before and after the overheat cutout. If the
overheat cutout has tripped it must be replaced. The overheat
cutouts are not resettable.
c. Check the calibration of the temperature sensor
Possible action for a steam-heated machine:
a. Check the steam valve.
b. Check that the ball valve is open and that the incoming steam
filter is clean.
c. Check steam pressure (see installation instructions).
d. Check condensate drain.
e. Check that there is no back-pressure in the condensate drain.
f. Check the calibration of the temperature sensor.
A29
Diff. temp in wash
chamber
Wash temperatures (-B05 and –B06), dependent and independent, differ by more than ±3 degrees C for three seconds.
Possible action:
a. Check the calibration of the temperature sensor (see the sec-
tion Repair and adjustment and under Calibration)
b. Check the temperature sensor.
A30
Faulty temp sensor in
wash chamber.
(Temperature too high
because of a heating
fault.)
The temperature in the wash chamber exceeds the maximum
set temperature by more than five degrees C.
Possible action for an electrically-heated machine:
a. Check that the heating contactor is not stuck.
b. Check that the heating elements are not short-circuited.
c. Check the calibration of the temperature sensor (-B05) .
Possible action for steam heated machine:
a. Check that the steam valve for the chamber heater is not stuck.
b. Check the calibration of the temperature sensor (-B05).
A31
High temperature in
drying unit.
The temperature in the drying unit is above 130°C.
Possible action:
a. Check that the heating contactor is not stuck.
b. Check that the heating elements are not short-circuited.
c. Check the calibrationof the temperature sensor (-B04).
A32
High temperature in
booster tank.
The temperature in the booster tank is above 98°C.
Possible action for an electrically-heated machine:
a. Check that the heating contactor is not stuck.
b. Check that the heating elements are not short-circuited.
c. Check the calibration of the temperature sensor (-B07).
Possible action for steam heated machine:
a. Check that the steam valve for the booster tank is not stuck.
b. Check the calibration of the temperature sensor (-B07).