Troubleshooting - DeLonghi MAGNIFICA EVO Service Manual

7. TROUBLESHOOTING

7.1. POSSIBLE TESTS WHICH CAN BE EXECUTED FROM THE TEST MODE
A. COFFEE CIRCUIT FLOW ACTIVATION
Move the infuser to the UP position (MOTOR UP).
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Activate the pump.
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The water will pass through the flow meter, the Thermoblock, the mechanical valve, the infuser
and will come out from the coffee spout.
B. HOT WATER/STEAM CIRCUIT FLOW ACTIVATION
- Connect the hot water spout to the machine.
The infuser does not have to be in upper position.
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- Activate the EV1 solenoid valve by holding the SETTINGS button pressed.
- Activate the pump by holding also the PRE-GROUND button pressed.
The water will pass through the flow meter, the Thermoblock, the EV1 solenoid valve. Finally it
will come out from the hot water spout.
7.2. ELECTRIC CHECKS DIRECTLY ON THE COMPONENTS
A. HEATING ELEMENTS RESISTANCE CHECK
Thermoblock resistance value: ≈ 35 Ohms.
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B. RESISTANCE/TEMPERATURE CHARACTERISTICS FOR NTC SENSOR
Resistance/temperature characteristics for the thermoblock NTC:
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Doc. Nr.: DSDL_21008_A