35
Test mode
Start condition: NO BU, NO drag drawer,
Door open, No Water
LED INDICATION
L24 & L26 ON
Sequence of actions by user Reaction of the appliance
PASS FAIL
Cause of failure
Solution
Check the start condition
L24(R) & L25(R)
ON
L24(!R) ON
L24 wrong color
Change UI boad
L25(!R) ON
L25 wrong color
Change UI boad
L24 OFF
L24 damaged
Change UI boad
Water level sensor
damaged (short
circuit)
Change Water level
sensor
Connector JP14 in
Main damaged
(short circuit)
Change Main boad
uP U2 in Main
damaged (short
circuit in Pin9)
Change Main boad
L25 OFF
L25 damaged Change UI boad
The Microswitch is
not well placed
Check assembly of
microswitch
Microswitch
damaged (short
circuit)
Change microswitch
Connector JP3 in
Main damaged
(schort circuit)
Change Main boad
uP U2 in Main
damaged (short
circuit in Pin26)
Change Main boad
Insert BrewUnit & Close
Door (No Dump Box) No changes
L25 OFF
Assembly issue of
the microswitch or
mechanical lever.
Check microswitch
position and
mechanical lever.
Insert a full water tank
L24(R) OFF
L24 remain ON
The floater in the
Water tank is
blocked or missing
Check the floater in
the Water Tank
Water level sensor
not in position
Change the position
of Water level sensor
Water level sensor
damaged (open
circuit)
Change Water level
sensor
Wiring of the water
level sensor not
connected
Check the wiring
Wiring of the water
level sensor
damaged (open)
Change the wiring
uP U2 in Main
damaged (open
circuit in Pin9)
Change Main Boad
Insert Dreg drawer and drip L25(R) OFF
L25 remain ON
The Microswitch is Check assembly of
Level 2 (Loads and sensor)
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