Friedrich 24 error code

What it means

The outdoor board/chip fault is tied by Friedrich to mismatched drive-board or compressor usage.

Urgency

Likely causes

1. Wrong drive board is being used
2. Wrong compressor is being used

Homeowner fix

Turn the system off and do not open the outdoor unit or change parts. If this appeared after repair, call the installer.

When to call a pro

Call a Friedrich-qualified technician if code 24 appears. Tell them the service manual lists outdoor board chip failure.

Repair vs replace

Usually a repair or installation-correction issue; compare replacement only if wrong major components were installed or damage is extensive.

• Friedrich Floating Air Pro 9,000 BTU R-454B 115V (FAHSW09A1C / FPHSR09A1C)

  Floating Air Pro

• Friedrich Floating Air Pro 9,000 BTU R-454B 208/230V (FAHFW09A3D / FPHSR09A3D)

  Floating Air Pro

• Friedrich Floating Air Pro 12,000 BTU R-454B 115V (FAHSW12A1C / FPHSR12A1C)

  Floating Air Pro

• Friedrich Floating Air Pro 12,000 BTU R-454B 208/230V (FAHFW12A3D / FPHSR12A3D)

  Floating Air Pro

For your technician

Official Friedrich indoor diagnostic table, PDF p.74: code 24 - outdoor board chip failure; causes are wrong drive board or wrong compressor. Page context: Friedrich maps this display to the Floating Air Pro line; source: Friedrich Ductless Floating Air Pro Single Zone Service Manual, R-454B Refrigerant, 96112000_00; display convention: match the twenty four marker exactly before comparing neighboring codes.

Which systems show it

Floating Air Pro

Related troubleshooting

Use the symptom guide alongside the exact display code if the unit is flashing, cycling, or showing comfort symptoms.

Related codes

Source

Next step