Service Manual
Table Of Contents
- Safety Notices
- Definitions
- General Information
- Installation
- Maintenance
- Operation
- Troubleshooting
- Troubleshooting
- Troubleshooting By Symptom
- Reset To Factory Defaults
- Symptom #1 - Ice Machine Will Not Run
- #2 - Low Production, Long Freeze Cycle
- Symptom #2 - Freeze Cycle Refrigeration System Operational Analysis Tables
- Symptom #3 & #4 - Harvest Problems Self‑contained Air, Water & Remote Condenser Models
- Symptom #3 - Self-Contained Air or Water-cooled
- Symptom #3 - Remote Condenser
- Symptom #4 - Self-Contained Air, Water-Cooled or Remote
- Component Check Procedures
- Electrical Components
- Control Board, Display And 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
- Fan Cycle Control
- Harvest Assist Air Pump
- Compressor Electrical Diagnostics
- Diagnosing Start Components
- Refrigeration Components
- Refrigerant Recovery/Evacuation
- System Contamination Clean-Up
- Liquid Line Filter-Driers
- Replacing Pressure Controls Without Removing Refrigerant Charge
- Total System Refrigerant Charge
- Electrical Components
- Charts
- Diagrams
- Wiring Diagrams
- Wiring Diagram Legend
- IF0300/IT0420/IT0450/IT0500/IT0620/IT0750 1ph Air/Water
- IT0500/IT1200 - 1ph Remote Air-Cooled
- IF0600/IF0900/IT0900/IT1200 - 1ph Air/Water
- IF0600/IF0900/IT0900/IT1200 - 3ph Air/Water
- IT1500/IT1900 - 1ph Air/Water
- IT1500/IT1900 - 3 ph Air/Water
- IF0500/IF0600/IF0900/IT1200/IF1500 - 1ph Remote
- IF0500/IF0600/IF0900/IT1200/IF1500 - 3ph Remote Condenser
- Electronic Control Board
- Refrigeration Tubing Schematics
- Wiring Diagrams
156 Part Number: 000015430 Rev 02 5/20
Troubleshooting
Refer to normal operation before troubleshooting - The T5
thermistor reading must indicate 36°F or less in the freeze
cycle and throughout the harvest cycle to shutoff on full
bin at the end of the harvest cycle.
View the T5 thermistor temperature on the touch screen
(menu/service/diagnostics/temperatures).
400°F:
A shorted bin level probe wire/thermistor will indicate a
temperature higher than 400°F. This issues will result in the
ice machine only stopping on full bin when the bin switch
(curtain) is open at the end of a harvest cycle. The ice
machine will restart when the curtain closes.
A shorted bin level probe wire/thermistor will indicate a
temperature lower than -10°F. This issue will result in the
ice machine only stopping on full bin when the bin switch
(curtain) is open at the end of a harvest cycle. The ice
machine will restart when the curtain closes.
OR HIGHER THAN THE ACTUAL TEMPERATURE AT THE
BIN LEVEL PROBE
An out of range thermistor can indicate a temperature
higher or lower than the actual temperature at the bin
level probe location.
1. Verify actual temperature at the bin level probe
location with a thermometer.
2. Refer to .