Thermistor
Common temperature-sensing fault part. Confirm resistance range and connector.
Ice Machine Error Code Lookup — Start Here
Ice machine codes usually point to freeze time, harvest time, water level, condenser problems, sensor faults, or bin controls. This page is the high-level lookup hub for the major commercial ice machine brands and the fault patterns technicians see most often.
Common Ice Machine Fault Patterns
| Fault Type | What It Usually Means |
|---|---|
| Long freeze | Scale, dirty condenser, low charge, warm water |
| Long harvest | Hot gas issue, curtain/gate problem, slab release issue |
| High pressure | Condenser dirty or fan/water regulation problem |
| Water fault | Float switch, inlet valve, low pressure |
| Sensor fault | Thermistor or float reading out of range |
| Bin full / dispenser fault | Bin switch, auger, gate, or dispenser jam |
Brand Hubs Covered
- Hoshizaki
- Manitowoc
- Scotsman
- Ice-O-Matic
- Follett
- Welbilt / Manitowoc variants
Step-by-Step Fix
- Check whether the machine is a cube, flaker, nugget, or dispenser model.
- Clean first if maintenance is overdue — Scale causes many false fault patterns.
- Inspect water supply, drain, and condenser condition.
- Watch whether the fault appears in freeze, harvest, or dispense.
- Use the model-specific guide once you know the stage of failure.
Parts Often Needed
| Part | Notes |
|---|---|
| Water inlet valve | Fill issues |
| Float switch | Water level faults |
| Thermistor | Freeze/harvest sensor problems |
| Hot gas valve | Harvest faults |
| Condenser fan motor | High-pressure trips |
Need Replacement Parts?
Before ordering, match the ice-machine part to the model number, electrical rating, and failure symptom. Check current prices on Amazon - prices and availability change frequently.
When to Call a Pro
If the machine is in a foodservice or healthcare setting and codes continue after cleaning and basic checks, bring in a commercial refrigeration tech. Ice quality, sanitation, and production rate all matter, not just whether the machine turns on.
Related Articles
- Follett Ice Machine Error Code E1 — Causes & Fix
- Follett Ice Machine Error Code E2 — Causes & Fix
- Follett Ice Machine Error Code E3 — Causes & Fix
- Hoshizaki C-101BAH / C-201BAH Countertop Ice Maker Error Codes — Full Fault Guide
- Hoshizaki DKM-500 Cube Dispenser Error Codes — Fault Code Diagnostic Guide