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8) N° 34 Steam boiler time-out temperature alarm .
This alarm is visualised on display by code 34
Cause: the steam boiler temperature has reached the minimum value of 105°C
Result: boiler heating is interrupted and the buttons of coffee-based, milk-based and filter drinks are disabled.
Solution: turn off the machine and then turn it back on.
WARNING:
a)
If the alarm sets off again, wait until the machine reaches the working temperature
b)
If the machine is in OFF mode, the display shows:
It indicates that the heating up stage of the coffee boiler has exceeded 12' time-out, verify:
1)
Faulty temperature probe
2)
Temperature probe stopped
3)
Faulty TRIAC
4)
The steam boiler safety thermostat has set in (see alarm description of steam boiler safety thermostat)
5)
Faulty master board
6)
Turn the machine in OFF mode and then turn it back on with the key N°11 (ON-OFF).
9) N° 35 Check flow lines
This alarm is visualised on display by code 35
Cause: It indicates that when the machine is in stand-by there is a leakage from the coffee hydraulic circuit.
Result: the machine is OFF.
Check the following:
1)
leakage from the expansion valve
2)
leakage from the third way of the coffee group solenoid valve.
3)
leakage from the by pass solenoid valve.
6)
leakage from the tubes of the coffee hydraulic circuit
7)
leakage from the no-return valve
10) N° 37 Coffee boiler temperature alarm.
This alarm is visualised on display by code 37
First case: the temperature inside the coffee boiler has reached the limit value of 105°C (221°F) or more.
Result: boiler heating is interrupted and the buttons of coffee-based, coffee +milk-based and filter drinks are disabled.
Solution: turn OFF the machine. Replace the TRIAC of the heating element coffee boiler. Turn the machine ON.
Second case: the temperature probe is defective. The probe sends the following signal to the pcb: 0 Ohm.
To check the temperature the probe sends to the pcb press key no. 15 without any smart card into the slot
Result: boiler heating is interrupted and the buttons of coffee-based, coffee+ milk-based and filter drinks are disabled.
Solution: turn OFF the machine. Replace the temperature probe. Turn the machine ON.
Third case: the temperature probe is defective. The probe sends the following signal to the pcb: 154 Ohm (short circuit).
To check the temperature the probe sends to the pcb press key no. 15 without any smart card into the slot
Result : boiler heating is interrupted and the buttons of coffee-based, coffee+ milk-based and filter drinks are disabled.
Solution:Turn OFF the machine. Replace the temperature probe. Turn the machine ON.
Select drink
Steam not ready
T.O Steam heat. T.O. 34
Check Flow Lines 35
Coffee temperat. 37
Pag.54
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