R-ProField casesRefrigeration systems

High Pressure Rise from Condenser Fouling

Likely causes

Dust, grease, or lint accumulated on fins

Check: Disconnect power and remove condenser cover

What to do: Disconnect power and remove condenser cover → Blow dust with compressed air against airflow direction → For grease: apply alkaline cleaner then rinse → Straighten bent fins with fin comb → Confirm high-side pressure normalizes after restart

Long-term maintenance neglect

Check: Blow dust with compressed air against airflow direction

What to do: Blow dust with compressed air against airflow direction → For grease: apply alkaline cleaner then rinse → Straighten bent fins with fin comb → Confirm high-side pressure normalizes after restart

Field tip

Cleaning the condenser will immediately reduce high-side pressure. Establish a regular cleaning schedule.

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