Panasonic Air Conditioner Fault Codes Guide | H11, F93, H98 Errors Explained

If your Panasonic Wall Split system displays a code starting with H or F (like H11 or F93), it indicates a sensor, communication, or component failure. Many issues, particularly those related to communication or refrigerant flow, require a licensed technician. You should perform a **5-minute power cycle** at the outdoor isolator switch before calling.

Common Panasonic Wall Split Fault Codes

These codes are typically displayed on the indoor unit's remote or the digital display. Codes starting with 'H' usually relate to the indoor unit or communication, while 'F' codes often relate to outdoor components or sensors.

**H11:** Communication failure between indoor and outdoor units. (Requires licensed diagnosis of wiring or PCB.)
**H14:** Indoor temperature sensor failure. (Unit running continuously or incorrectly).
**H97:** Outdoor fan motor fault. (May cause the unit to overheat quickly).
**H98:** High discharge temperature. (Possible gas shortage or restricted airflow).
**H99:** Indoor coil freeze prevention activated. (Commonly due to dirty filters or low gas).
**F11:** Outdoor temperature sensor fault. (Inaccurate outdoor readings).
**F93:** Abnormal compressor speed detection. (Often indicates a seized or faulty compressor). (Serious issue requiring immediate professional attention.)

What Should You Do? (Troubleshooting Steps)

1Perform a Hard Reset

Turn off your Panasonic system at the **main outdoor electrical isolator switch** for a full 3 to 5 minutes. This clears the memory of the PCBs. Restart the unit and see if the code returns.

2Check Filters and Outdoor Unit

Clean all indoor filters. Ensure the outdoor unit coils are free of leaves, grass clippings, and other debris that can restrict airflow and cause overheat codes like H98.

3If the Code Persists, Call Air Turners

If the H or F code returns, the fault is mechanical or electronic and requires specialized tools. **Codes like F93 (compressor) or H11 (communication) cannot be fixed by a reset.**

Expertise Statement

Written and verified by: Chris Mason

Chris is the Lead HVAC Technician at Air Turners with 18 years of experience diagnosing complex fault codes across all major brands, including Panasonic. All repair guides are based on licensed, ARC-certified service expertise within the Canberra climate.

View Chris's Full Credentials

Frequently Asked Questions

What does Panasonic fault code H11 mean?

H11 indicates a communication failure between the indoor and outdoor units. This is typically a wiring issue, loose connection, or a failure in one of the main Printed Circuit Boards (PCBs). It usually requires professional diagnosis.

Is a Panasonic H98 or H99 fault code serious?

The H98 (high discharge temp) and H99 (coil freeze) codes are usually triggered by restricted airflow (dirty filters) or a refrigerant shortage. While H99 can sometimes be resolved by cleaning the unit, H98 suggests a potentially serious issue like a gas leak or restricted compressor flow that must be checked by an ARC-licensed technician.

Don't risk costly damage. If the fault code persists, call your licensed Canberra specialist.

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