Hitachi
Evaporator Coil Freezing
Frost or ice forming on indoor unit coil or front panel
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Possible Causes
Dirty air filters restricting airflow, Low indoor fan speed for long periods, Low refrigerant charge, Very low room temperature with cooling still running
How to Fix / Troubleshooting
Safety first: Turn OFF the unit and allow ice to melt naturally. Do not use sharp tools to remove ice.
Steps:
- Clean filters: Ensure maximum airflow.
- Increase fan speed: Use higher fan settings during cooling.
- Adjust set temperature: Raise the setpoint to avoid overcooling.
If freezing continues: A technician should check refrigerant charge and system pressures.
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Repair Difficulty
Easy
2/5
Required Part
Indoor Evaporator Coil / Air Filters
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