Perth's Panasonic fault code lookup
Panasonic fault codes decoded
46 codes covered — what each one means, the likely cause, and whether it's worth trying something yourself before booking. Compiled from Panasonic documentation.
Panasonic air conditioners store a fault code you retrieve with the remote's CHECK button — the blinking TIMER light only tells you a code exists. Codes come in two families: H-codes (sensors, communication, components) and F-codes (refrigeration cycle and compressor protection). The tables below cover the residential wall split, Free Multi and compact ducted ranges.
How to find your Panasonic fault code
Wall splits — read the code back through the remote
- 1 Panasonic doesn't use flash counting: a blinking TIMER light only means a code is stored. You retrieve it with the remote.
- 2 Press the recessed CHECK button (a pin-hole under the slide-down cover) and hold for 5 seconds — the display changes to “- -”.
- 3 Press the TIMER up/down button to step through codes, starting at H00.
- 4 When the displayed code matches the stored fault, the unit's POWER lamp lights for 30 seconds and you get a continuous ~4-second beep. That code on screen is your fault. (Short flash, no beep = not a match.)
- 5 Hold CHECK for 5 seconds to exit — or it exits itself after 30 seconds. Wi-Fi models also show the code in the Comfort Cloud app.
Wired controllers (ducted and cassettes)
- 1 No beep method needed — the code flashes directly on the controller screen, with the indoor unit number on multi/group systems.
- 2 Note the whole code (letter plus digits) before switching anything off.
- 3 Alarm history lives in the controller's maintenance menu — normally a technician function.
Panasonic fault code tables
Communication and installation faults (indoor-outdoor)
| Code | What it means | Likely cause | What to do |
|---|---|---|---|
| H00 | No abnormality detected - the unit has no fault stored in memory | Shown during remote-control self-diagnosis when no error has been logged; the problem may be intermittent or not fault-related (e.g. power supply, remote batteries) | Try this first |
| H11 | Indoor/outdoor communication failure - the head unit and outdoor unit have stopped talking to each other (detected about 1 minute after start-up; unit may run fan-only) | Loose or damaged interconnect cable between indoor and outdoor units, or a faulty indoor/outdoor PCB; occasionally a transient after a power interruption | Try this first Switch the system off at the isolator or breaker for 2 minutes, then restore power and retest - if H11 returns, book a technician (wiring/PCB diagnosis is not DIY) |
| H12 | Multi-split capacity mismatch - the total capacity of connected indoor units is outside the outdoor unit's allowed range (checked ~90 seconds after power-up) | Wrong indoor/outdoor combination, too many or too few indoor units connected, or crossed interconnect wiring on a multi-split | Book a service |
| H33 | Indoor/outdoor misconnection - units with different rated voltages have been connected together | Mismatched indoor and outdoor units or incorrect interconnect wiring at installation | Book a service |
| H38 | Indoor/outdoor brand-code mismatch - the units do not recognise each other as a matched pair | Indoor and outdoor units from incompatible ranges paired together, usually after a partial replacement | Book a service |
| H39 | Abnormal indoor operating unit or standby unit (multi-split systems) - a standby indoor unit is freezing or misbehaving while another runs | Refrigerant pipes and inter-unit wiring crossed between rooms at installation, or a faulty expansion/solenoid valve on the outdoor unit serving that room | Book a service |
| H41 | Wrong wiring or piping connection detected on a multi-split system | Interconnect wires and refrigerant pipes crossed between rooms at installation, or an expansion-valve fault | Book a service |
Temperature and pressure sensor faults
| Code | What it means | Likely cause | What to do |
|---|---|---|---|
| H14 | Indoor intake air (room temperature) sensor fault | Sensor open-circuit or short-circuit, or a loose lead/connector on the indoor unit | Book a service |
| H15 | Compressor temperature sensor fault | Sensor open-circuit or short-circuit, or a loose lead/connector at the outdoor unit | Book a service |
| H16 | Outdoor current transformer (CT) abnormality - the outdoor unit is drawing abnormally low current | Insufficient refrigerant (gas leak), a faulty CT circuit on the outdoor PCB, or a failing power module/compressor | Book a service |
| H17 | Outdoor suction pipe temperature sensor fault (open or short circuit) | Defective or disconnected suction/intake pipe sensor on the outdoor unit, corroded connector, or damaged sensor wiring | Book a service |
| H23 | Indoor heat exchanger (pipe) temperature sensor 1 fault | Sensor open-circuit or short-circuit, or a loose lead/connector | Book a service |
| H24 | Indoor heat exchanger temperature sensor 2 fault | Sensor open-circuit or short-circuit, or a loose lead/connector | Book a service |
| H27 | Outdoor (ambient) air temperature sensor fault | Sensor open-circuit or short-circuit, or a loose lead/connector on the outdoor unit | Book a service |
| H28 | Outdoor heat exchanger temperature sensor 1 fault | Sensor open-circuit or short-circuit, or a loose lead/connector | Book a service |
| H30 | Outdoor discharge pipe temperature sensor fault | Sensor open-circuit or short-circuit, or a loose lead/connector | Book a service |
| H32 | Outdoor heat exchanger temperature sensor 2 fault | Sensor open-circuit or short-circuit, or a loose lead/connector | Book a service |
| H34 | Outdoor heat-sink temperature sensor fault (power module cooling sensor) | Sensor open-circuit or short-circuit on the outdoor control board | Book a service |
| H36 | Outdoor gas pipe temperature sensor fault | Sensor open-circuit or short-circuit, or a loose lead/connector | Book a service |
| H37 | Outdoor liquid pipe temperature sensor fault | Sensor open-circuit or short-circuit, or a loose lead/connector | Book a service |
| H59 | ECONAVI (human activity/sunlight) sensor fault, detected for 25 seconds continuously | ECONAVI sensor open/short circuit, disconnected, or a faulty ECONAVI PCB - the unit usually still cools/heats with ECONAVI off | Book a service |
| H64 | Outdoor high-pressure sensor fault (detected while the compressor is stopped) | High-pressure sensor open-circuit, loose lead/connector, or PCB fault | Book a service |
| H70 | ECONAVI light/human-detection sensor abnormality | Light sensor open or short circuit, or feedback signal stuck (detected continuously over an extended period); unit usually keeps cooling but ECONAVI features stop working | Book a service |
Fan motors, drainage and accessory faults
| Code | What it means | Likely cause | What to do |
|---|---|---|---|
| H19 | Indoor fan motor locked or feedback abnormal - the indoor fan cannot spin properly | Jammed or obstructed fan barrel, failed fan motor, or a loose motor lead/connector | Book a service |
| H21 | Condensate drain fault - float switch has tripped (models with a drain pump, e.g. ducted and cassette units) | Blocked drain line or drain pan, failed drain pump, or a defective float sensor | Try this first Check the condensate drain outlet is not blocked or kinked and that water can run away freely; if the code returns after a 2-minute power cycle, book a technician |
| H25 | e-ion / ionizer unit fault (older models with air-purifying ion generator) | Defective ion unit or indoor PCB - normal cooling/heating usually continues | Book a service |
| H26 | Ionizer (minus-ion) fault on older air-purifying models | Defective ion generator or indoor board | Book a service |
| H50 | Ventilation/fan motor or its control board defective (model-dependent) | Failed fan motor or indoor PCB | Book a service |
| H51 | Nozzle lock / nozzle blockage abnormality (automatic filter-cleaning mechanism) | The self-clean robot nozzle is jammed or blocked by dust build-up; judged after 2 consecutive occurrences. Applies to models with automatic filter cleaning | Book a service |
| H52 | Limit switch abnormality (filter-cleaning mechanism cannot detect its end position) | Faulty left/right limit switch on the automatic filter-cleaning unit or a fault on the indoor PCB | Book a service |
| H67 | nanoe / nanoe X abnormality — the air-purifying module has stopped for 5 minutes on three occasions. | Faulty nanoe device, its high-voltage supply or the PCB. (On Panasonic Aquarea heat pumps H67 means something different — this table is for air conditioners.) | Book a service |
| H85 | Communication fault between the indoor unit and the built-in wireless LAN (Wi-Fi) module | Network adaptor fault, router problem or poor Wi-Fi coverage - air conditioning itself keeps working | Try this first Restart your Wi-Fi router and power-cycle the air conditioner at the breaker for 2 minutes; re-pair in the Comfort Cloud app - only book service if the code persists with a healthy network |
| H97 | Outdoor fan motor locked or feedback abnormal (detected twice within 30 minutes) | Debris, leaves or ice jamming the outdoor fan, a failed fan motor, or a loose lead/connector | Try this first With the unit switched off at the breaker, clear leaves, debris and vegetation from around the outdoor unit and check nothing is fouling the fan, then power-cycle - book service if it recurs |
Protection trips (airflow-related, often DIY-recoverable)
| Code | What it means | Likely cause | What to do |
|---|---|---|---|
| F17 | Multi-split standby indoor unit freezing - an indoor unit that was idle has started to ice up | Crossed pipe/wiring connections on a multi-split, a leaking expansion valve, or a heat-exchanger sensor fault | Book a service |
| F95 | Outdoor high-pressure protection in cooling - the outdoor coil is running too hot (tripped 4 times within 20 minutes) | Blocked or filthy outdoor coil, debris/vegetation choking airflow, outdoor fan problem, or a refrigeration-circuit fault | Try this first Switch off and clear debris, plants and obstructions from all sides of the outdoor unit so air can flow freely, then power-cycle - if F95 returns, book a technician |
| H98 | Indoor high-pressure protection in heating mode - the unit throttled or stopped itself to prevent overheating (often stored in memory without an alarm) | Dirty air filters, blocked indoor airflow (short-circuiting), furniture/curtains obstructing the unit, or a dirty indoor coil | Try this first Clean the air filters and make sure nothing blocks the indoor unit's intake and outlet, then power-cycle for 2 minutes - if it keeps tripping, book a service (the coil may need professional cleaning) |
| H99 | Indoor freeze protection in cooling mode - the indoor coil started icing up so the unit protected itself | Dirty filters or restricted airflow over the indoor coil; if it persists after cleaning, low refrigerant is likely | Try this first Clean the filters, let any ice fully thaw with the unit off, then restart - if H99 recurs with clean filters, book a technician to check refrigerant charge |
Refrigeration cycle, compressor and electrical faults (F codes - do not keep running the unit)
| Code | What it means | Likely cause | What to do |
|---|---|---|---|
| F11 | 4-way (reversing) valve switching failure - the unit cannot change over between heating and cooling correctly (4 trips within 30 minutes) | Stuck or failed reversing valve, or its solenoid coil/lead | Book a service |
| F90 | Power factor correction (PFC) circuit protection on the outdoor inverter board (4 trips within 10 minutes) | Faulty outdoor inverter PCB or abnormal power input; sometimes compressor winding issues | Switch off & call |
| F91 | Refrigeration cycle abnormality - the system detects it is not moving heat properly (2 trips within 20 minutes) | Insufficient refrigerant from a gas leak, or a service valve left closed/partially closed | Switch off & call |
| F93 | Compressor abnormal revolution - the compressor is not rotating as commanded | Failing power transistor (inverter) module, compressor winding fault, or a locked/seizing compressor | Switch off & call |
| F94 | Compressor discharge pressure overshoot protection (4 trips within 30 minutes) | Overpressure in the refrigeration circuit - overcharge, blockage or a system fault | Switch off & call |
| F96 | Power transistor module (IPM) overheating protection (4 trips within 30 minutes) | Overheated inverter power module - failing module, poor heat-sink contact, or restricted outdoor airflow | Switch off & call |
| F97 | Compressor overheating protection - discharge temperature too high (3 trips within 30 minutes) | Insufficient refrigerant (leak) or a refrigeration-circuit fault causing the compressor to run hot | Switch off & call |
| F98 | Total running current protection - the system is drawing too much power (3 trips within 20 minutes) | Overcurrent from a refrigeration-system problem, power-supply issue, or a compressor beginning to lock | Switch off & call |
| F99 | Outdoor DC peak current detection - the inverter cut out on an instantaneous current spike (7 consecutive detections) | Failed power transistor module, compressor winding short, or a locked compressor | Switch off & call |
No matching code found.
Meanings vary by series and some codes are model-specific — call 0434 951 341 with the code and your model number and we'll decode it.
Reference compiled from Panasonic service and operation documentation. Codes and meanings are provided as general guidance for the Australian residential range and can differ between model series; no affiliation with Panasonic is implied.
Tell us the code when you book — diagnosis starts before we arrive
Air conditioning service and repairs across Perth from $220 inc GST — all brands, splits and ducted. Quoting the fault code gives us a head start on where to look; we then test and confirm the actual fault on site before any part is ordered, so you never pay for a part you didn't need.
Frequently Asked Questions
How do I get the error code out of my Panasonic?
Hold the recessed CHECK button on the remote (a pin-hole under the slide-down cover) for 5 seconds until the display shows “- -”, then press TIMER up/down to step through codes. When the code matches the stored fault, the unit beeps for about 4 seconds and the POWER lamp lights for 30 seconds — that's your code. Full steps are above the tables.
What does H00 mean?
No fault stored — the diagnostic ran and found nothing in memory. If the unit is misbehaving but reports H00, the problem is more likely airflow, settings or sizing than an electronic fault.
What's the difference between H codes and F codes?
Broadly, H-codes cover sensors, communication, fan motors and accessories, while F-codes cover the refrigeration cycle, compressor and inverter protection. F-codes more often mean stop-using-it-and-call; H-codes more often have a simple cause like a blocked filter or a loose connector.
My Wi-Fi Panasonic shows the code in the app — is that the same code?
Yes. Newer Wi-Fi models push the same H/F code to the Comfort Cloud app, which saves the remote button sequence entirely. Look it up in the tables here the same way.
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