Manitowoc QuietQube Series Technician's Handbook page 86

E26 T6 or T7 Temperature Issue
The thermistor had an average value reading outside of
the valid range.
E27 T6 or T7 Temperature Issue
The thermistor had an average value reading outside of
the valid range.
E28 AuCS
When the AUCS clean option is selected from the menu,
the control checks for the presence of the AUCS board.
When the AUCS is not connected it will signal an Event
which will clear as soon as the hardware is detected.
E29 USB Communication Fault
USB Communication error; No USB drive in port or
defective USB drive.
E30 USB Download Fault
USB Download error related to USB drive or a defective
USB drive.
E31 Safe Mode
Safe mode allows the ice machine to operate for a period
of time in the event of a Water level or ice thickness probe
failure. The controller allows the machine to operate based
on model data and historical cycle information.
E32 RS485 Communication Fault
The device plugged into the RS485 port is not
communicating between the control board and gateway.
E33 Touchscreen Fault
The Touchscreen is not plugged into the control board or
is faulty.
E34 Display Fault
The touchscreen is not plugged into the control board or
is faulty.
86 Part Number: 000015431 Rev01 5/19