Service Manual
Table Of Contents
- Safety Notices
- Definitions
- General Information
- Installation
- Stacking Two Ice Machines on a Single Storage Bin
- Location of Ice Machine
- Clearance Requirements
- Dual Evaporator Model Installation on a Manitowoc Bin
- Ice Machine on a Dispenser Installation
- Water Supply and Drains
- Lineset Applications
- QuietQube® Remote Condensing Unit
- Additional Refrigerant Charge For 51' to 100' Line Sets
- Maintenance
- Operation
- Menu Navigation
- Component Check Procedures
- Control Board, Display And Touchscreen
- Operating an ice machine without a Touchscreen
- Control Board Relay Test
- Programming A Replacement Control Board
- USB Flash Drive Specifications and Formatting
- Exporting Data to a Flash Drive
- Upgrading Firmware with a Flash Drive
- Main Fuse
- Bin Switch
- Water Level Control Circuitry
- Ice Thickness Probe (Initiates Harvest)
- Bin Level Probe
- Thermistors
- High Pressure Cutout (HPCO) Control
- Low Pressure Cutout (LPCO) Control
- Compressor Time Delay
- Fan Cycle Control
- Harvest Assist Air Pump
- Compressor Electrical Diagnostics
- Diagnosing Start Components
- Refrigeration Components
- Recovery/Evacuation/Charging Procedures QuietQube® Models
- System Contamination Clean-Up
- Total System Refrigerant Charge QuietQube® CVD Models
- Control Board, Display And Touchscreen
- Charts
- Diagrams
Part Number: 000015431 Rev 02 6/20 129
CONTROL BOARD, DISPLAY AND TOUCHSCREEN
FUNCTION
The control board, display and touch screen provide user
input and control the ice machine sequence of operation.
NOTE: Anytime power is supplied to wires #55 & #56 on
the control board, the “Display” and “Micro” lights will
flash on and off randomly. The two green lights are located
on the top corner of the control board.
Display Diagnostics
Symptom - Micro light flashes and display light is off.
1. Reboot ice machine by disconnecting power for
a minimum of 15 seconds, reapplying power and
checking micro light for normal flashing.
2. Disconnect the display module communication cable
from the control board and inspect for damaged or
corroded pins. Reconnect after inspection
3. Press the On/Off button on the display and watch the
green Display light on the control board.
A. Display light flashes- Test run ice machine.
B. Display light is off - Replace display/touchscreen
assembly.
Component Check Procedures