Saeco Minuto, Руководство по обслуживанию

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MINUTO 05 TROUBLESHOOTING
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The machine passes to the level 5 (Heater-Grinder) The machine passes to the level 5 (Heater-Grinder)
Press the STEAM button to switch on the grinder Press the STEAM button to switch on the grinder
The grinder rotates and in the indication GRINDER the number increasing
up to 40. The other numbers inside the GRINDER box are not important
for this test.
ERROR: ERROR: The number remains 0 or the grinder does not run, the display The number remains 0 or the grinder does not run, the display
backlight changes from green to red; check the Hall sensor board of the backlight changes from green to red; check the Hall sensor board of the
Grinder, the Grinder, the wiring from the Hall sensor board to the CPU/ Grinder, the Grinder, the wiring from the Hall sensor board to the CPU/
POWER board (JP2) and the wiring from the Grinder to the CPU/POWER POWER board (JP2) and the wiring from the Grinder to the CPU/POWER
board (JP8) board (JP8)
ERROR: ERROR: In the indication HEATER appears “SHORT”, the NTC tempera- In the indication HEATER appears “SHORT”, the NTC tempera-
ture-sensor is shorted, the display backlight changes from green to red; ture-sensor is shorted, the display backlight changes from green to red;
check the wiring from the NTC temperature-sensor to the CPU/POWER check the wiring from the NTC temperature-sensor to the CPU/POWER
board (JP13). board (JP13).
ERROR: ERROR: In the indication HEATER appears “OPEN”, the NTC tempera- In the indication HEATER appears “OPEN”, the NTC tempera-
ture-sensor is detached or broken, the display backlight changes from ture-sensor is detached or broken, the display backlight changes from
green to red; check the wiring from the NTC temperature-sensor to the green to red; check the wiring from the NTC temperature-sensor to the
CPU/POWER board (JP13). CPU/POWER board (JP13).
Press the ESPRESSO button to switch on the Heater Press the ESPRESSO button to switch on the Heater
The absorbed current ( Amperometer on the main supply) is OK, the The absorbed current ( Amperometer on the main supply) is OK, the
indication HEATER changes from “OFF” to “ON” and the indication HEATER changes from “OFF” to “ON” and the
temperature starts increasing. temperature starts increasing.
If temperature is over 135°C, the backlight change from GREEN to If temperature is over 135°C, the backlight change from GREEN to
YELLOW. This is a ALERT message to avoid heating the HEATER element YELLOW. This is a ALERT message to avoid heating the HEATER element
over dangerous temperature. over dangerous temperature.
ERROR: the absorbed current is KO or the temperature does not
increase; check the wiring from the heater to the CPU/POWER board
(JP19) and the wiring of the NTC temperature-sensor (JP13).
Check the temperature Check the temperature
The number shows the heater temperature . The number shows the heater temperature .
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