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2021/01 Rev. 0.4
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E38
STEAM BOILER
LEVEL ERROR
E38: During use the steam boiler
does not REFILL or fills up to slowly.
The steam boiler dosing valve DV3
must REFILL the steam boiler within
20 seconds with hot water from the
coffee boiler until the level sensor is
reached.
The espresso pump KW2 and dos-
ing valve DV3 is responsible for the
water supply.
In case the steam boiler gets over-
filled the espresso pump presses the
excess water into the drip tray via de
4bar overpressure valve.
P out = 1,46 Bar
Hot water
level
Steam
T in = 90°C
Element
T = 127°C
E39: During commissioning the
EMPTY steam boiler does not fill or
fills up to slowly.
The steam boiler dosing valve DV3
must fill the EMPTY steam boiler
within 80 seconds with hot water
from the coffee boiler until the level
sensor is reached.
Check if espresso pump is functioning.
Service menu 2.07 Hardware test /
inputs / espresso pump
If the pump does not function please
follow the instructions in chapter 3. No
error code related problems.
Check if valve DV3 is functioning.
Service menu 2.07 Hardware test /
outputs / dosing valve 3 (DV3)
1007352*(5x)
DV1
DV4
DV3
DV2
DV5
HOT WATER
TO COFFEE BREWER
TO INSTANT MIXER
TO STEAM BOILER
FROM BOILER
Check the steam boiler level sensor
operation. Service menu 2.07 Hard-
ware test / inputs / level steam boiler
Check the steam boiler level sensor on
lime-scale build up. This lime-scale can
insulate the tip of the sensor so no water
will be detected.
Before taking out the level sensor the
steam system it needs to be de-pressur-
ised.
Service menu 2.14 Installation / Shut
down / de-pressurise system.
E39
STEAM BOILER
FILL ERROR
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