3.5
3.5.3.5
3.5.3.6
3.5.3.7
3.5.3.8
3.5.4
3.5.3
3.5.3.4
3.5.5
3.5.3.9
Solenoid valve is
damaged, all the
water flowing
from the hot
water outlet
21
Item Confirmation No. No. Cause Remedy RemarksProblem
Prob-
ability
Troubleshooting
YES - replace drainage valve
group
NO - continue to 3.5.3.5
1. Disassemble drainage
valve group according
to 4.2.8;
2. Replace or repair
damaged components
according to drainage
valve group explosive
view 8810101006
YES - replace contropistone seal,
item: 73000065
NO - continue to 3.5.3.6
Drainage valve
group damaged,
no water comes
to brew unit;
water drops to
drip tray directly
from drainage
valve
Contropistone
seal damaged,
coffee comes out
from the gap
between coffee
brewing box and
contropistone
YES - replace coffee brewing
group, item: 881010032
NO - continue to 3.5.3.7
Brew unit piston
seal damaged
Refer to 3.5.3.5
YES - replace seal,
item: 73000035
NO - continue to 3.5.3.8
Seal in brew unit
damaged
Refer to 3.5.3.4
Use
coffee
beans to
make
coffee
No coffee
comes out
from coffee
export
1. Disassemble brew unit
according to 4.2.3;
2. Replace or repair
damaged components
according to brew unit
explosive view
8810101016
YES - replace damaged parts in
brew unit
Brew unit parts
damaged; when
making coffee
,coffee brewing
box can not be
closed exactly
Refer to 3.5.3.5
YES - replace damaged solenoid
valve
1. Disassemble solenoid
valve group according
to 4.2.9;
2. Replace or repair
damaged components
according to soleniod
valve explosive view
8810102009
Coffee
temperatur
e is too low(
below
70°C)
YES - preheat coffee cup or
increase the temperature of
environment
NO - continue to 3.5.4.2
The temperature
of the cup is too
low
The temperature
of the water is too
low
YES - use the pure water that
around 25°C
NO - continue to 3.5.4.3
YES - the temperature from the
3rd cup will meet the standard
NO - continue to 3.5.4.4
YES - descale
Descale according to
5.2.2
The temperature is
low, or standby
time is too long;
brew unit and
water circuit is
cold
Coffee machine
needs descale
(deposit
decreased the
efficiency of the
thermoblock)
3.5.4.1
3.5.4.2
3.5.4.3
3.5.4.4
YES - fix NTC
NO - continue to 3.5.5.2
NTC loose or
unfixed
Replace or repair
damaged components
according to
thermoblock group
explosive view 8810102006
Disassemble
PCBA,replace and
repair according to
4.2.11
YES - replace NTC thermistor,
item: 73000221
NO - continue to 3.5.5.3
YES - replace or repair PCBA,
item: 78000056
NTC thermistor
damaged
Program or PCBA
damaged
3.5.5.1
3.5.5.2
3.5.5.3
Coffee
temperatur
e is too
high( more
than 89°C)
3.5.6.1
Descale according to
5.2.2
YES - descale
NO - continue to 3.5.6.2
Coffee machine
needs descale
(deposit makes
pipes inside the
machine nearly
clogged)
Coffee
volume is
too little
(the volume
of Espresso
is less than
25ml)
3.5.6
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