{ "@context": "https://schema.org", "@type": "HowTo", "name": "How to Troubleshoot Blue Cold Freon Evaporator - Frost not clearing from coil during defrosting", "description": "A field engineer's diagnostic guide to identifying causes and resolving Freon Evaporator - Frost not clearing from coil during defrosting in commercial refrigeration systems.", "totalTime": "PT30M", "estimatedCost": { "@type": "MonetaryAmount", "currency": "USD", "value": "0" }, "step": [ { "@type": "HowToStep", "url": "https://www.bluecoldref.com/troubleshooting/[item-slug]#step1", "name": "Isolate Power & Confirm Safety", "text": "Before touching any electrical panels or mechanical valves, ensure the system is safely isolated following standard Lockout-Tagout (LOTO) protocols." }, { "@type": "HowToStep", "url": "https://www.bluecoldref.com/troubleshooting/icing-on-coil#step2", "name": "Check Ambient and System Pressures", "text": "Attach calibrated manifold gauges to the suction and discharge service valves to verify if the physical system pressures align with electronic controller readings." }, { "@type": "HowToStep", "url": "https://www.bluecoldref.com/troubleshooting/icing-on-coil#step3", "name": "Inspect Evaporator for Malfunctions", "text": "Examine the designated component for obvious signs of failure, such as restricted airflow, clogged filter driers, or loose electrical contactor wiring." } ] }

Trouble Shooting

Back

Freon Evaporator - Frost not clearing from coil during defrosting

Symptoms

Frost not clearing from coil during defrosting

Possible Causes‍
  1. Freezing point during defrost is lower then coil temperature
  2. Do not have enough defrost cycles per day
  3. Defrost termination is too short
  4. Defective timer or defrost thermostat
‍Possible Corrective Steps
  1. Cheater operation
  2. Adjust timer for more defrost cycle
  3. Adjust defrost thermostat or timer for longer cycle
  4. Replace defective component

‍