Hoshizaki
Refrigeration Floodback / Low Load Condition
Visible frost or ice buildup on suction line or compressor
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Low load due to low ambient, Overfeeding expansion device, Poor airflow over evaporator, Incorrect charge or restriction
How to Fix / Troubleshooting
Safety First: Do not chip ice from refrigerant lines. Refrigerant work must be done by a certified technician.
- Check ambient temperature: If the room is very cold, consider relocating the unit or improving room heating.
- Clean evaporator and air paths: Ensure nothing is blocking airflow (for air-cooled evaporators) and that the evaporator is clean.
- Observe operation: Note when frost appears and report this to a technician.
When to call a technician: Frost on the compressor or suction line often indicates a charge or metering issue that requires professional diagnosis.
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Repair Difficulty
Professional Required
5/5
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