Troubleshooting - Gaggia Evolution E90 Use And Maintenance

9

TROUBLESHOOTING

Here is a list of the possible machine troubles.
Problem
The machine 1. Mains switch off
does not 2. Machine switch off
start
3. Incorrect electrical mains connection
No water in 1. Mains tap closed
boiler
2. Clogged pump filter
3. Motor driven pump not in operation
No unit 1. Mains tap closed
delivery
2. Motor driven pump not in operation
3. Clogged gigleur
4. Burnt control box fuse
5. Unit solenoid valve out of order
6. Unit switch out of order
Steam fails
1. Too much water in boiler
to come 2. Damaged resistance
out of the 3. Clogged sprayer element
nozzle
4. Resistance saver engaged
Too much The motor driven pump remains engaged
1.
water in the 2. Perforated exchanger
boiler Automatic charge solenoid valve
3.
blocked
Signs of 1. Dirty drain tray
water
2. Drainage pipe clogged or detached
leakage on
bench 3. Other leakage
Wet coffee 1. Grinding regulated too fine
dregs
2. Unit still cold
3. Solenoid valve fails to discharge
Coffee 1. Grinding regulated too fine
dispensing
2. Dirty filter-holder
too slow
3. Clogged unit
Gigleur or solenoid valve partially
4.
clogged
Coffee 1. Grinder is regulated too large
dispensing
too fast
Lime scale present on the exchangers
Coffee 1.
delivered or the resistances
cold 2. Oxidized pressure switch contacts
3. Defective electrical connection
4. Partially burnt out resistance
Coffee Incorrect pressure switch
1.
delivered calibration
too hot
Cause
1.
2.
3.
1.
2.
3.
1.
2.
3.
4.
5.
6.
1.
2.
3.
4.
1.
2.
3.
1.
2.
3.
1.
2.
3.
1.
2.
3.
4.
1.
1.
2.
3.
4.
1.
Solution
Position the machine switch to position ON
Position the machine switch to position 1
Contact specialized personnel in order to check the connection
Open the mains tap
Replace the filter
Contact specialized personnel
Open the mains tap
Contact specialized personnel
Contact specialized personnel
Contact specialized personnel
Contact specialized personnel
Contact specialized personnel
See specific problem
Contact specialized personnel
Clean the sprayer element
Reinsert the resistance
Contact specialized personnel
Contact specialized personnel
Contact specialized personnel
Clean the tray
Replace the drainage pipe
Contact specialized personnel
Adjust grinding value
Wait for the machine to reach the correct temperature
Contact specialized personnel
Adjust grinding value
Replace the filter and undertake more frequent filter-holder cleaning
Contact specialized personnel
Contact specialized personnel
Adjust grinding value
Contact specialized personnel
Contact specialized personnel
Contact specialized personnel
Replace the resistance element
Regulate the pressure switch by means of the relative
screw (chap. "Pressure switch adjustment")
English
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