Dr.coffee M12 - Operational and System Errors

Rev 0.1
Dr.coffee Service Manual 53
Showing in the Screen
Cause
Solutions
a) Connection between Sensor and
mainboard damages or disconnects;
b) NTC damages;
c) The temperature is over 180℃;
➢ Check the connection, reconnect or replace
the wire;
➢ Replace a new NTC;
➢ Switch off the machine and restart after 30
minutes for cooling down;
➢ Replace a new Steam Thermo Block;
9.1.8 Coffee Thermo Block Heating Overtime
Showing in the Screen
Cause
Solutions
a) The temperature of coffee thermo block
exceeds the value of the temperature
fuse, causing the temperature fuse to be
blown;
b) NTC sensor damages;
c) Coffee thermo block damages;
➢ Turn off the machine, dissemble the cover of
machine to replace fuse
➢ Replace a new NTC temperature sensor;
➢ Replace a new Coffee Thermo block;
9.1.9 Steam Thermo Block Heating Overtime
Showing in the Screen
Cause
Solutions
a) The temperature of steam thermo block
exceeds the value of the temperature fuse,
causing the temperature fuse to be blown;
b) NTC sensor damages;
c) Steam thermo block damages;
➢ Turn off the machine, dissemble the cover of
machine to replace fuse
➢ Replace a new NTC temperature sensor;
➢ Replace a new Steam Thermo block;
9.1.10 Hot Water Thermo Block Heating Overtime