What does your Panasonic fault code mean?
Pick the code showing on your remote, wall controller or indoor unit and see what it means, what commonly causes it, and what is safe to check yourself. This page covers 47 Panasonic fault codes for units sold in Australia, compiled from official Australian manufacturer and distributor documentation, the same references our own technicians carry.
Heads up: Panasonic uses the same code with different meanings on different product ranges, so check the model range shown next to the code.
Every Panasonic fault code at a glance
Some models show faults as a flashing-light pattern instead of a code; documented lamp patterns are listed alongside their codes.
| Code | What it means | Severity |
|---|---|---|
| E01 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The indoor and outdoor units have lost communication with each other | Fault – service needed |
| E02 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | A fault in the outdoor power circuit that drives the compressor and fan | Fault – service needed |
| E03 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The outdoor unit control memory has failed | Fault – service needed |
| E04 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The system shut down because the electrical current spiked too high | Fault – service needed |
| E05 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | A fault in the outdoor power control circuit | Fault – service needed |
| E06 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The compressor is running too hot and the system has shut down to protect it | Fault – service needed |
| E07 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The indoor fan is not running properly | Fault – service needed |
| E08 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The system cannot switch between cooling and heating because the reversing valve is not working | Fault – service needed |
| E09 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The system has shut down because it has detected it is running with little or no refrigerant | Urgent – turn it off |
| E10 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | A fault in the circuit that drives the compressor | Fault – service needed |
| E11 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The outdoor fan is not running properly | Fault – service needed |
| E12 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | A general fault in the outdoor unit | Fault – service needed |
| E13 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The indoor coil started to freeze and the freeze prevention protection cut in | Minor fault |
| F11 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The system cannot switch properly between cooling and heating because the reversing valve is not working | Fault – service needed |
| F90 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The power factor correction circuit in the outdoor unit has detected an electrical fault | Fault – service needed |
| F91 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The refrigeration cycle is not working properly, most often from low refrigerant or a blockage | Fault – service needed |
| F93 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The compressor is not rotating at the speed the controller expects | Fault – service needed |
| F95 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The high pressure protection has tripped while the system was cooling | Fault – service needed |
| F96 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The power module in the outdoor unit has overheated and the system has shut down to protect itself | Fault – service needed |
| F97 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The compressor has overheated and the system has shut down to protect it | Fault – service needed |
| F98 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The system is drawing too much total current and has shut down to protect itself | Fault – service needed |
| F99 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The outdoor unit has detected a current spike (DC overcurrent) and shut down to protect the electronics | Fault – service needed |
| H11 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The indoor and outdoor units have lost communication with each other | Fault – service needed |
| H12 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The indoor and outdoor units are mismatched in capacity, so the system will not run | Fault – service needed |
| H14 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The indoor air temperature sensor is faulty, so the unit cannot read the room temperature properly | Minor fault |
| H15 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The compressor temperature sensor on the outdoor unit is faulty | Minor fault |
| H16 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The outdoor unit has detected abnormally low running current, which can point to low refrigerant or an electrical fault | Fault – service needed |
| H19 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The indoor fan motor has locked up or failed to run | Fault – service needed |
| H21 (Panasonic systems with a condensate drain pump, most often cassette and ducted indoor units) | The condensate drain protection has tripped because water is not draining away properly | Fault – service needed |
| H23 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The indoor coil temperature sensor is faulty | Minor fault |
| H24 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The second indoor coil temperature sensor is faulty | Minor fault |
| H27 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The outdoor air temperature sensor is faulty | Minor fault |
| H28 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The outdoor coil temperature sensor is faulty | Minor fault |
| H30 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The outdoor discharge temperature sensor, which watches the hot gas leaving the compressor, is faulty | Minor fault |
| H33 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The indoor and outdoor units are wired or connected incorrectly, often a supply voltage mismatch | Urgent – turn it off |
| H38 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The indoor and outdoor units are not a matching Panasonic pair, so the system will not run | Fault – service needed |
| H50 (Panasonic indoor units fitted with a ventilation function, a feature on some wall split and ducted models. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The ventilation fan motor has failed or is not running properly | Minor fault |
| H97 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The outdoor fan motor has locked up or failed to run | Fault – service needed |
| H98 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The indoor high pressure protection has tripped, most often because airflow through the indoor unit is restricted | Minor fault |
| H99 (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault) | The indoor coil has started to freeze and the anti freezing protection has cut in | Fault – service needed |
| S01 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The room temperature sensor has failed | Minor fault |
| S02 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The indoor coil temperature sensor has failed | Minor fault |
| S03 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The humidity sensor has failed | Minor fault |
| S04 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The compressor temperature sensor has failed | Minor fault |
| S05 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The outdoor coil temperature sensor has failed | Minor fault |
| S06 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The outdoor air temperature sensor has failed | Minor fault |
| S07 (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller) | The outdoor current sensor has failed | Minor fault |
Codes that mean switch the system off
If your Panasonic unit shows H33, E09, turn the system off at the isolator and leave it off. These faults involve the compressor, refrigerant or electrical protection, and running the unit can cause further damage.
The most serious Panasonic fault codes explained
What does Panasonic fault code H33 mean? (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault)
The indoor and outdoor units are wired or connected incorrectly, often a supply voltage mismatch
Likely causes:
- Incorrect wiring between the indoor and outdoor units
- Wrong supply voltage to one of the units
- Mismatched units connected together
Safe checks before you call:
- Stop using the system and leave it switched off until it has been inspected
What does Panasonic fault code E09 mean? (Older Panasonic inverter split systems that use the S and E code set on the remote or wall controller)
The system has shut down because it has detected it is running with little or no refrigerant
Likely causes:
- Refrigerant leak
- Service valve on the outdoor unit not fully open
Safe checks before you call:
- Stop using the system and book a service, running it without refrigerant can destroy the compressor
What does Panasonic fault code H11 mean? (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault)
The indoor and outdoor units have lost communication with each other
Likely causes:
- Damaged or loose interconnecting cable between indoor and outdoor units
- Indoor or outdoor circuit board (PCB) failure
- Power interruption to the outdoor unit
Safe checks before you call:
- Check the outdoor unit isolator switch is turned on
- Turn the system off at the isolator or breaker for 5 minutes, then restart it once
What does Panasonic fault code H12 mean? (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault)
The indoor and outdoor units are mismatched in capacity, so the system will not run
Likely causes:
- Wrong indoor and outdoor unit pairing after an installation or a part replacement
- Wiring connected to the wrong unit on a multi head system
- Circuit board fault reporting the wrong capacity
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it once
What does Panasonic fault code H16 mean? (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault)
The outdoor unit has detected abnormally low running current, which can point to low refrigerant or an electrical fault
Likely causes:
- Low refrigerant charge
- Outdoor circuit board or power module fault
- Current sensor (current transformer) open circuit
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it once
What does Panasonic fault code H19 mean? (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault)
The indoor fan motor has locked up or failed to run
Likely causes:
- Indoor fan motor failure
- Something jamming the indoor fan
- Indoor circuit board fault
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it once
What does Panasonic fault code H21 mean? (Panasonic systems with a condensate drain pump, most often cassette and ducted indoor units)
The condensate drain protection has tripped because water is not draining away properly
Likely causes:
- Blocked condensate drain line
- Failed drain pump
- Faulty float switch in the drain tray
Safe checks before you call:
- Look for water dripping from the indoor unit and turn the system off if you see any
- Check the outside drain outlet is not visibly blocked by dirt or garden debris
What does Panasonic fault code H38 mean? (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault)
The indoor and outdoor units are not a matching Panasonic pair, so the system will not run
Likely causes:
- Indoor and outdoor units from different ranges connected together
- Wrong unit fitted during an installation or replacement
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it once
What does Panasonic fault code H97 mean? (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault)
The outdoor fan motor has locked up or failed to run
Likely causes:
- Outdoor fan motor failure
- Something jamming the outdoor fan
- Outdoor circuit board fault
Safe checks before you call:
- Check the outdoor unit is not blocked by leaves, plants or stored items and has clear airflow around it
- Turn the system off at the isolator or breaker for 5 minutes, then restart it once
What does Panasonic fault code H99 mean? (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault)
The indoor coil has started to freeze and the anti freezing protection has cut in
Likely causes:
- Low refrigerant charge
- Dirty or clogged return air filters
- Restricted airflow through the indoor unit
Safe checks before you call:
- Check the indoor return air filters and clean them if they look dusty or clogged
- Turn the system off at the isolator or breaker for 5 minutes, then restart it once
- If the code keeps returning after a filter clean, stop restarting it and book a service
What does Panasonic fault code F11 mean? (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault)
The system cannot switch properly between cooling and heating because the reversing valve is not working
Likely causes:
- Faulty four way (reversing) valve
- Faulty valve coil
- Outdoor circuit board fault
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it once
What does Panasonic fault code F90 mean? (Panasonic wall split, ducted, cassette and multi head systems using the H and F code set. The code shows on the indoor display or remote. On most remotes you can press and hold the CHECK button for about 5 seconds and step through codes until the unit gives a long beep at the stored fault)
The power factor correction circuit in the outdoor unit has detected an electrical fault
Likely causes:
- Outdoor power circuit (PFC) fault
- Abnormal supply voltage
- Outdoor circuit board failure
Safe checks before you call:
- Turn the system off at the isolator or breaker for 5 minutes, then restart it once
Fault confirmed? Here is what to do next
A fault code is the starting point, not the fix. Start here:
- Air conditioner repairs – how we diagnose and fix Panasonic faults across Adelaide. Our fault find covers the full diagnosis, and it is on us if you go ahead with the repair.
- Repair or replace calculator – whether fixing your current system is the smarter money.
- Service and maintenance – regular servicing prevents most of the faults on this page.
- Air conditioner fault code lookup – all 15 brands in one place.
- All calculators and tools
Call us on 08 8296 7888 or book online and we will call or text you back ASAP.
Sources for this page
Every Panasonic code above is checked against these Australian documents. Open them yourself to verify anything on this page:
- Panasonic air conditioner error codes (PDF) (idealairconditioningservice.com.au)
- panasonic error codes (jaysairconditioning.com.au)
- panasonic fault codes (airturners.com.au)
- panasonic air conditioner error codes melbourne (panasonicacservices.com.au)
- panasonic error codes (aircaresolutionsnsw.com.au)
- panasonic air conditioner error codes (valleyairconditioning.com.au)
- panasonic air conditioner error codes northern beaches (platinumac.com.au)
Panasonic fault code FAQs
Where do I find the fault code on a Panasonic air conditioner?
Check the remote or wall controller display first. Some models flash the indoor unit’s lamps in a pattern instead; the table above lists documented lamp patterns alongside their codes. If nothing is showing, the code may only appear while the fault is active.
Can I clear a Panasonic fault code myself?
You can reset the system by turning it off at the isolator or breaker for five minutes. If the code stays gone, it was a one-off. If it returns, the fault is real and needs a licensed technician, and repeated resets can cause further damage on compressor or refrigerant faults.
Does a Panasonic fault code mean I need a new air conditioner?
Usually not. Most codes point to repairable faults like sensors, fan motors or drainage. Our fault find gives you an honest verdict either way, and the fee is credited if you repair with us.
Are these Panasonic fault codes correct for Australian models?
Yes. Every code on this page was checked against Australian documentation (idealairconditioningservice.com.au, jaysairconditioning.com.au, airturners.com.au), not overseas lists, because the same code can mean different things in different markets. Meanings still vary between model series, so treat this page as reference and cross-check your unit’s manual.
Written by Oliver Hastings, T&K Airpower. Last updated 01/08/2026. Compiled from Australian sources including idealairconditioningservice.com.au, jaysairconditioning.com.au, airturners.com.au, panasonicacservices.com.au, so you can check every code against the official documentation. Fault code meanings vary between model series and controllers, so treat this page as reference only and never remove panels or work on the refrigeration or electrical parts of the system yourself.
