31
LUM Eroica - Rev.0 del 01/01/04
TROUBLE
CAUSE
SOLUTION
The appliance doesn’t switches ON 1. Mains switch is OFF
2. Appliance switch is OFF
3. Wrong connection to mains
1. Set mains switch in ON
2. Set appliance switch in pos. 1
3. Contact service for check
Missing hot water in boiler 1. Water source tap closed
2. Pump filter clogged
3. Motor-pump set failure
1. Open water source tap
2. Replace filter
3. Contact service
Missing coffee delivery from group 1. Water source tap closed
2. Motor-pump set failure
3. Clogged giggler
4. Electronic control unit fuse melt
5. Group solenoid-valve failure
1. Open water source tap
2. Contact service
3. Contact service
4. Contact service
5. Contact service
Missing steam from lances 1. Too much water in boiler
2. Heating element failure
3. Sprayer clogged
4. Heating element protector trip
1. See SPECIFIC TROUBLE
2. Contact service
3. Clean sprayer
4. Reset protector
Water level in boiler is too high 1. The pump motor always run
2. Heat-exchange is perforated
3. Solenoid-valve for automatic
water filling is blocked
1. Replace motor
2. Replace heat exchanger
3. Replace solenoid-valve
Water leakages on table top 1. Exhaust basin is dirty
2. Exhaust pipe is disconnected or
clogged
1. Clean exhaust basin
2. Replace exhaust pipe
Coffee dregs are wet 1. Coffee grinding is too fine
2. Group is still cold
3. Group solenoid-valve doesn’t
work properly
1. Adjust grinding degree
2. Wait for appliance to get warm
3. Clean group exhaust system
Coffee delivery is too slow 1. Coffee grinding is too fine
2. Filter holder is dirty
3. Group is clogged
4. Injector or solenoid-valve are
partially clogged
1. Adjust grinding degree
2. Replace filter and clean filter
holder more frequently
3. Contact service
4. Replace injector or solenoid-
valve
Coffee delivery is too fast 1. Coffee grinding is too rough 1. Adjust grinding degree
Delivered coffee is cold 1. Heat-exchangers or heating
element coated with limestone
2. Pressure-switch contacts are
oxidised
3. Defective electrical connections
4. Heating element is partially
burned
1. Contact service for overhauling
2. Clean pressure-switch contacts
3. Contact service to check the
connections
4. Replace heating element
Delivered coffee is too hot 1. Wrong pressure-switch
calibration
1. Adjust pressure-switch by acting
on the relevant screw
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