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 6/20 153
SYMPTOM
The alert log indicates a T1, T2, T3, or T4 Fault.
CHECK PROCEDURE
NOTE: Navigate to Menu/Service/Data/Real Time data/
Time & Temperature
NOTE: An open thermistor will display -10°F (-23°C) and a
shorted thermistor displays 400°F (204°C).
Thermistor Test
1. Disconnect the suspect thermistor from the control
board and swap with another thermistor.
A. The symptoms move with the thermistor -
Replace the thermistor.
B. The symptom does not change - Perform control
board test.
Control Board Test
1. Disconnect thermistor from control board - The
display temperature reading, dropping to -10°F
(-23°C) indicates the control board is good.
2. Short thermistor pins - The display temperature
reading, climbing to 400°F (204°C) indicates the
control board is good.