13
Service Manual EF 470 / EF 471
en
Version 1.1
Troubleshooting
Checking the machine on receipt
The receipt check enables you to rapidly
locate faults on the machine and to initiate
appropriate repair action.
Follow the check procedure.
Repair any faults found and check if the
machine is operating perfectly.
Check procedure
Symptoms
Action / repair work
Further action / repair work
1 Check appliance for visible
damage
1.1 Parts of housing broken or damaged
YES - Replace parts if necessary
NO - Go to point 1.2
1.2 Mains cable damaged
YES - Replace mains cable
NO - Plug machine to the mains and go to point 2.1
2 Check mechanical elements
2.1 Closing handle works correctly
YES - Go to point 2.2
NO - It is hard or impossible to close the closing handle
YES - Screw on closing handle screws at defined
torque and block them with Loctite 241 (see page
20) or replace CBU
NO - Replace the CBU
2.2 Is the capsule correctly ejected?
YES - Go to point 2.3
NO - Replace CBU
2.3 Is the capsule cage seal damaged?
(feel with a finger if the seal is damaged)
YES - Replace CBU
NO - Go to point 3
3 Fill water tank
3.1 Water tank is leaking
YES - Replace water tank
NO - Go to point 4
4 Press On/Off button to perform
automatic self test
4.1 Machine is not working (no function)
YES - a) Check if mains cable is functional
YES - Go to point b)
NO - Replace it
YES - b) Check if On/Off button is functional
YES - Go to point c)
NO - Replace it
YES - c) Check if pump is working (press coffee
button)
YES - Go to point f)
NO - Go to point d)
YES - d) Check if coffee button is functional
YES - Go to point e)
NO - Replace it
YES - e) Check if pump's fine wire fuse (128°C) is
defective
YES - Replace it
NO - Replace pump
YES - f) Check if thermoblock’s fine wire fuse (167°C)
is defective
YES - Replace it together with electronic control
board and if necessary the thermoblock
NO - Go to point g)
