Dr.coffee M12 - Error Without Tips in the Screen; Fail to Switching on; No Milk; No Milk Foam, Warm Milk Only

Rev 0.1
Dr.coffee Service Manual 54
Showing in the Screen
Cause
Solutions
a) The temperature of hot water thermo block
exceeds the value of the temperature fuse,
causing the temperature fuse to be blown;
b) NTC sensor damages;
c) Hot water thermo block damages;
➢ Turn off the machine, dissemble the cover of
machine to replace fuse
➢ Replace a new NTC temperature sensor;
➢ Replace a new Hot Water Thermo block;
9.2 Error without Tips in the Screen
9.2.1 Fail to Switching On
Showing in the Screen
Cause
Solutions
-
a) No power connection ;
b) Voltage isn’t high enough;
c) Not Switched on
d) Power PCB damages;
e) The fuse of Main Power is blown;
➢ Check if the machine is connected with
power;
➢ Connect the machine with acceptable
power;
➢ Check if the machine is switched on;
➢ Replace a new Power PCB;
➢ Replace a new Fuse of Main Power;
9.2.2 No Milk
Showing in the Screen
Cause
Solutions
-
a) The milk box is empty;
b) The pipe or outlet of steam is blocked;
c) The pipe of steam is broken;
d) The number of Air Intake is set too high.
e) The Milk Frother is blocked;
➢ Refill milk to the milk box;
➢ Do Milk Deep Rinse;
➢ Dissemble the Cover of machine, check the
pipe of steam.
➢ Set the number of Air Intake lower;;
➢ Dissemble and clean the Milk Frother
➢ Replace a new Milk Frother;
9.2.3 No Milk Foam, Warm Milk Only
Showing in the Screen
Cause
Solutions
-
a) The inlet of Air Intake Valve is blocked;
b) The pipe of Air Intake Valve is blocked;
c) The Air Intake Valve damages;
➢ Check the inlet and the pipe of Air Intake
Replace a new Air Intake Valve.