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Moisture indicator shows wet

What is going on

Possible causes and checks for: moisture indicator shows wet.

Likely causes

  • Moisture in system (leak, poor evacuation, saturated drier too small, alcohol additive), reading taken on hot line is misleading the other way

Check in this order

  1. Liquid line temp near 75°F when reading, replace drier (never reuse), re-check
  2. If indicator turns tan = oil, flush/if persists too much oil

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Source: General HVAC service practice — verify per model. Written in our own words; check the manual for your exact model.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.