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Deep Technical Chapters · Components & Systems
Blocked / Dirty Condensers
Foundation
The most common cause of high head pressure — and the cheapest fix.
A dirty or blocked condenser can't reject heat, so head pressure climbs. Clean the condenser and fix the airflow before chasing the cycle.
Diagnosis at a glance
Symptoms of failure
- •High head pressure
- •High compressor amps
- •Trips on HP
- •Poor capacity
Measurements to take
- •Head pressure vs ambient saturation
- •Condenser condition
- •Airflow
How to prove the fault
- •Head pressure tracks ambient and airflow — clean it and re-check
