23
SERVICE INFORMATION
8. ERROR DIAGNOSIS
When the unit detects an error, the display on the operation panel shows one of the following error
codes. See “9. (23) Display shows error” for the remedies.
Priority Code
Error
Motors stop
Display
Error log
(Check mode
"C3")
Possible cause and remedy
High
↑
E10
E60
E61
Main board error
Yes
No
Main board defective
-->Turn off power supply and turn it
back on, or replace board.
E11 Operation board error
-
Yes
No
Operation board defective
--> Turn off power supply and turn it
back on, or replace board.
E12 Communication error
Yes
-
Yes
Communication error between main
and operation boards
--> Check contact of connectors and
wires.
E22
Hall voltage error
(open circuit, short circuit)
Yes
(3 times in a
row)
-
Yes
Open or short circuit of sensor board
wiring
--> Check contact of connectors and
wires.
E20 Encoder error
Yes
(3 times in a
row)
-
Yes
Operation panel unit motor failure
--> Check for seized or jammed beer
tap.
E21 Hall element error
Yes
(3 times in a
row)
-
Yes
Operation panel unit not in center
position
--> Check for seized beer tap, valve
shaft spring out of position or sensor
board error.
E31 Descending platform error
Yes
(3 times in a
row)
-
Yes
Failure to detect platform's lowest
position
--> Check for microswitch failure
E40 Pressure sensor error
Yes
-
Yes
Abnormal pressure level
--> Short or open circuit of wires, sensor
malfunction
E41 Abnormal liquid thermistor
-
Yes
Yes
Open or short circuit of liquid thermistor
--> Replace thermistor.
F1
Canceled dispensing (operation
button)
-
Yes (*1)
Yes (*2)
F2
Canceled dispensing (lift up
operation panel unit)
-
Yes (*1)
Yes (*2)
F3 Canceled dispensing (sold out)
-
Yes (*1)
Yes (*2)
F4 Canceled dispensing (other)
-
Yes (*1)
Yes (*2)
↓
E51 Condenser thermistor error
-
Yes
Yes
Open or short circuit of condenser
thermistor
--> Replace thermistor.
E52 Condenser high temperature error
-
Yes
Yes
Insufficient condensation
--> Check for clogged filter or air
inlet/outlet.
Low
E30 Ascending platform error
-
-
Yes
Failure to detect platform's highest
position
--> Check for jammed mug.
*1 Canceled dispensing (F1 to F4) is displayed only when "A04" is set to "1". Error log is recorded regardless of the display setting.
*2 When dispensing is canceled (F1 to F4) and an error occurs at the same time, only error log is recorded.
*3 When an error occurs with the number of mugs on display, both are displayed alternately.
Canceled automatic dispensing
operation
* Error log is recorded for each
cancellation to identify cause of failure
to dispense a preset amount of beer.
* When "A04" is set to "1", every
cancellation is displayed.
