USA
page 56
B1 BOILER FILLING FAIL.:
Cause:
The machine boiler fi
ll-up was not achieved in the maximum foreseen 5 min. time limit.
Check:
1. The correct water supply from the piping network.
2. If the solenoid-valve fi lter is clogged. Clean the fi lter if needed.
3. Solenoid valve Y5 failure. Change the solenoid valve.
4. The boiler pressure-switch failed. Replace if needed. Before replacing the pressure-switch, drain the boiler completely.
5. Circuit board failure. Change the circuit board.
6. The Y6 solenoid valve on the heat recovery coil is blocked (on machines equipped with the optional Heat Recovery
System). Replace if needed.
B1
BOILER FILLING FAIL.
B2. BOILER PROBE FAIL.:
Cause:
The circuit board does not detect the boiler 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.
B2
BOILER PROBE FAIL.
B3. BOILER HEAT. ALARM:
Cause:
The factory-set boiler temperature was not achieved in the maximum foreseen 30 min. time limit.
Checks:
1. If the boiler heating element heats properly.
Check the integrity of the electrical heating element.
Check the electrical connection.
Check the boiler coil-switch (remote control switch) protection.
Check the boiler safety thermostat. Should the thermostat be overheated, press the reset button to check its effi ciency.
Replace if needed.
2. Circuit board failure. Change the circuit board.
B3
BOILER HEAT. ALARM
B4. RINSING FAILED:
Cause:
The rinse water was not used during the rinse cycle.
Check:
1. Check the free rotation of the rinse pump. Should the impeller be blocked, rotate the motor
shaft manually, by a screw-driver (see pict. 27)
2. Check the rinse nozzles are not obstructed and/or encrusted and they don’t allow the water
sprays. Clean carefully the nozzle.
3. Drain completely the boiler; disconnect the pipe from the pressure-switch and check it is
obstructed; check also if the air trap assembly is not obstructed.
4. The boiler pressure-switch failed. Replace if needed. Before replacing the pressure-switch,
drain the boiler completely and check, blowing into the hose, that it is not obstructed.
5. Rinse pump damaged. Replace if needed.
6. Circuit board failure. Change the circuit board.
pict. 27
B4
RINSING FAILED
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