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Troubleshooting
Checking the machine on receipt
The receipt check enables you to rapidly
locate faults on the machine and to initiate
appropriate repair action.
Check procedure
1.1 Parts of housing broken or damaged
1 Check appliance for visible
damage
1.2 Mains cable damaged
2.1 Closing handle works correctly
2 Check mechanical elements
2.2 Is the capsule correctly ejected?
2.3 Is the capsule cage seal damaged?
(feel with a finger if the seal is damaged)
3 Fill water tank
3.1 Water tank is leaking
4 Turn-on On/Off switch to perform
4.1 Machine is not working (no function)
automatic self test
Service Manual EF 473 / EF 474
Follow the check procedure.
Repair any faults found and check if the
machine is operating perfectly.
Symptoms
YES - Replace parts if necessary
NO - Go to point 1.2
YES - Replace mains cable
NO - Plug machine to the mains and go to point 2.1
YES - Go to point 2.2
NO - It is hard or impossible to close the closing handle
YES - Go to point 2.3
NO - Replace CBU
YES - Replace CBU
NO - Go to point 3
YES - Replace water tank
NO - Go to point 4
YES - a) Check if mains cable is functional
YES - b) Check if On/Off switch is functional
YES - c) Check if pump is working (press coffee
button)
YES - d) Check if coffee buttons are functional
YES - e) Check if pump's fine wire fuse (128°C) is
defective
YES - f) Check if thermoblock's fine wire fuse (167°C)
is defective
1 5
Action / repair work
YES - Screw on new closing handle screws at
defined torque (see page 22) or replace CBU
NO - Replace the CBU
YES - Go to point b)
NO - Replace it
YES - Go to point c)
NO - Replace it
YES - Go to point f)
NO - Go to point d)
YES - Go to point e)
NO - Replace defective button(s)
YES - Replace it
NO - Replace pump
YES - Replace it together with electronic control
board and if necessary with the thermoblock
NO - Go to point g)
Further action / repair work
Version 1.0
en
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