Wega Mininova, Instructions Manual

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English
89
espresso coffee machine - technician instructions
16. MALFUNCTIONS and RELATIVE SOLUTIONS
Indication Cause Solution
MACHINE
LACKING POWER
1) The machine main switch is in the “0” position
2) The machine switch is defective
3) The mains power supply switch is in the OFF position
4) The connection to the electrical mains is defective 1) Place the machine switch in the “1” position
2) Replace the main switch
3) Place the mains switch in the ON position
4) Check for any defective connections
WATER LACKING
IN BOILER
1) The water mains tap is closed /
The internal tank of the machine is empty
2) The pump filter is clogged
3) The motor pump is disconnected or jammed
4) The water filling solenoid valve is defective
5) The water inlet solenoid valve filter is clogged 1) Open the water mains tap /
Fill the internal tank
2) Replace the pump filter
3) Check the motor pump
4) Replace the water filling solenoid valve
5) Clean or replace the filter of the solenoid valve
TOO MUCH WATER
IN THE BOILER
1) The solenoid valve of the automatic level device is defective
2) The heat exchanger is perforated
3) The solenoid valve of the automatic level device remains
connected 1) Replace the solenoid valve of the automatic level device
2) Replace the boiler.
3) Check the level probe, the earth of the frame and the operation
of the electronic control unit
STEAM DOES NOT COME
OUT OF NOZZLES
1) The electrical heating element is defective
2) The heating element protection thermostat has cut in
3) The nozzle sprayer is clogged 1) Replace the electrical heating element
2) Reset the heating element protection
3) Clean the steam nozzle sprayer
STEAM MIXED WITH
WATER COMES OUT OF
THE NOZZLES
1)The boiler level is too high
1) Check the status of the level probe:
verify correct position and check for
presence of any surface lime scale
NO DISPENSING
1) No water mains /
The internal tank of the machine is empty
2) Group solenoid valve is defective
3) The pump is jammed
4) The injector is clogged
5) The group solenoid valve is clogged or dirty
6) The volumetric dosing device is blocked 1) Check that there is water in the mains /
Fill the internal tank
2) Replace the group solenoid valve
3) Replace the pump
4) Clean or replace the injector
5) Clean or replace the solenoid valve
6) Check/replace the dosing device
WATER LEAKS
FROM THE MACHINE
1) The tub does not drain
2) The drain tube is broken or detached or has an obstruction
in the water flow
3) Hydraulic leaks in the hydraulic circuit
1) Check the sewer drain
2) Check and restore the connection of the drain tube to the tub
3) Identify and eliminate any hydraulic leaks