H2
Hoshizaki
High Condenser Temperature or High Pressure Warning
Display shows H2; unit may shut down intermittently
Advertisements
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.
Advertisements
Possible Causes
Severely dirty condenser, Failing condenser fan motor, Restricted airflow around condenser, Water-cooled condenser scale buildup
How to Fix / Troubleshooting
Safety First: Disconnect power and shut off water (for water-cooled) before servicing.
- Deep clean condenser: Use coil cleaner and a fin comb if necessary to restore airflow through the coil.
- Check fan motor: Confirm the fan starts reliably and runs at full speed. Replace if slow, noisy, or intermittent.
- Verify clearances: Ensure nothing is stored against the condenser side of the unit.
- Water-cooled units: Have a technician descale the condenser if water flow and temperature rise indicate fouling.
When to call a technician: Persistent H2 after cleaning and fan replacement suggests a sealed system or high-pressure control issue.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Condenser Coil
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements