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Air Conditioner: Undercharged system: compressor runs continuously, poor cooling, high power use, warm liquid line and drier

Updated · by Aurora Star Tech Inc.

Undercharged system: compressor runs continuously, poor cooling, high power use, warm liquid line and drier on a air conditioner: Possible causes and checks for: undercharged system: compressor runs continuously, poor cooling, high power use, warm liquid line and drier.

Homeowner with a air conditioner problem? Call (647) 657-2977 or book a service call — licensed technicians across Vaughan and the GTA.

Common causes of undercharged system: compressor runs continuously, poor cooling, high power use, warm liquid line and drier

  • Low charge → high-side not condensing

How to fix undercharged system: compressor runs continuously, poor cooling, high power use, warm liquid line and drier: step by step

  1. Note hot drier may release trapped moisture back into system
  2. Fix leak, recharge, consider new drier
Safety: Gas, electrical and refrigerant work must be done by a licensed technician. Turn off power and gas before servicing, never bypass a safety control, and always follow the manufacturer's manual for your exact model.

If the unit shows an error code, look it up: Carrier Air Conditioner codes Goodman Air Conditioner codes KeepRite Air Conditioner codes Lennox Air Conditioner codes Trane Air Conditioner codes

Source: General HVAC service practice — verify per model. Written in our own words as a summary; always check the original manual.

General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.

Emergency HVAC Service

647-657-2977