EN
ALARM-B8
BOILER PRESSURE
SWITCH
ALARM-B9
BOILER SAFETY
THERMOSTAT
ALARM-E1
WATER LOAD
FAILED
pict. 8
ALARM-E2
TANK PROBE
FAIL.
ALARM-E3
TANK HEATING
ALARM
page 50
B8. BOILER PRESSURE SWITCH:
Cause: The circuit board does not detect the pressure-switch or the pressure-switch
failed.
Checks:
1. Check the electrical connection between circuit board and pressure switch.
Restore the connection.
2. Pressure-switch failure. Replace if needed.
3. Circuit board failure. Change the circuit board.
B9. BOILER SAFETY THERMOSTAT:
Cause: The boiler safety thermostat is tripped.
Checks:
1. Reactivate the thermostat.
2. Check the circuit board electrical connection.
3. Circuit board failure. Change the circuit board.
E1. WATER LOAD FAILED:
Cause: The machine wash-tank was not fi lled in the maximum foreseen time limit.
Checks:
1. No water supply to the machine. Open all water supply valves.
2. Check the right functioning of the solenoid valve.
Solenoid valve fi lter clogged. Clean the fi lter.
Solenoid valve
Y5
failure. Change the solenoid valve.
3. Check the free rotation of the rinse pump. Should the impeller be blocked, rotate
the motor shaft manually, by a screw-driver (see pict. 8).
4. Rinse pump failure. Change the pump.
5. The fi lling of the wash-tank does not stop. Check the tank pressure switch.
6. If the water supply comes from an osmotic device, enable the extended time from
the dip-switch (see paragraph 1.11).
7. Circuit board failure. Change the circuit board.
8. Check the rinse slots are not obstructed and/or encrusted and they don't allow
the water sprays. Clean carefully the slots.
E2. TANK PROBE FAIL.:
Cause: The circuit board does not detect the wash-tank sensor.
Checks:
1. Check the electrical connection between circuit board and sensor.
2. Check if the sensor works properly.
3. Check that the sensor did not overheat.
E3. TANK HEATING ALARM:
Cause: The factory-set wash-tank temperature was not achieved in the maximum
foreseen time limit.
Checks:
1. If the tank heating element heats properly.
Check the integrity of the electrical heating element.
Check the electrical connection.
2. Circuit board failure. Change the circuit board.