Amana Refrigeration Circuit Failure

Amana air conditioner blows warm air in cooling mode; compressor and fan appear to run.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Low refrigerant charge from leak, stuck or restricted expansion device, failed compressor valves, reversed refrigerant lines after service

How to Fix / Troubleshooting

Safety first: Turn off power before touching refrigerant lines; they can be very hot or cold. Do not attempt to open the sealed system.

Steps to address warm air issue:

  • Check coil temperatures: Carefully feel the indoor coil area and outdoor coil. In cooling mode, the indoor coil should be cold and the outdoor coil warm. If both are similar temperature, refrigerant flow may be compromised.
  • Inspect for frost: Frost on the indoor coil or suction line can indicate low charge or restriction.
  • Look for oil stains: Oil around joints or coils suggests a refrigerant leak.
  • Call a licensed technician: Refrigerant diagnosis, leak repair, and recharging must be performed by a certified HVAC technician using proper tools.

Continuing to run the unit with a refrigerant problem can damage the compressor.

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Repair Difficulty

Professional Required 5/5

Required Part

Refrigerant Metering Device (Capillary Tube or Expansion Valve)
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