Carrier Air Conditioner error codes
2 Carrier air conditioner codes and problems, each with ranked causes, safe homeowner checks and honest repair costs. Count the flashes or read the code on your control board, then find it below. Legends vary by board revision, so confirm against the label inside your unit's door.
| Code | What it means | Severity |
|---|---|---|
| Frozen evaporator coil | Carrier AC evaporator coil frozen? Learn the common causes (airflow, low refrigerant, blower faults), safe homeowner fixes and typical repair costs. | Call a pro |
| Not cooling | Carrier AC not cooling? Causes include dirty filters, low refrigerant, failed capacitors and frozen coils. DIY checks plus repair costs from $0 to $2,500+. | Call a pro |
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