Perth's air conditioner fault code lookup
Air conditioner fault codes decoded
Brand-by-brand lookup tables compiled from manufacturer documentation by a licensed Perth technician — what each code means, the likely cause, and what to do about it.
That code blinking on your remote or wall controller is your air conditioner telling you exactly what's wrong — if you can translate it. These lookup tables cover the residential ranges brand by brand: what each code means, what usually causes it, and an honest flag on whether it's worth trying something yourself before booking anyone.
Pick your brand
Daikin fault codes →
Letter + digit codes (A3, E7, U4…) shown on the remote or wall controller. Covers Cora, Alira, Lite splits, multi-splits and ducted.
74 codes covered
Fujitsu fault codes →
Two-part codes on wall controllers plus the LED flash patterns wall splits use when there's no display. Splits, multi and ducted covered.
105 codes covered
Mitsubishi Heavy Industries fault codes →
RUN and TIMER lamp patterns on Avanti, Bronte and SRK splits, mapped to their E-codes — plus the wired-controller codes for ducted and cassettes.
64 codes covered
Mitsubishi Electric fault codes →
Operation-indicator blink counts on MSZ splits, P/E/U/F check codes on wired controllers, and the 4-digit codes newer controllers show.
79 codes covered
Panasonic fault codes →
H and F codes, plus the remote CHECK-button sequence that gets the code out of the unit in the first place. Splits, Free Multi and ducted.
46 codes covered
Midea fault codes →
Both code generations — the older E/P/F codes and the newer EH/EL/EC system — plus the status readouts (dF, CL, FP) that aren't faults.
71 codes covered
Another brand — Samsung, LG, Haier, Kelvinator, ActronAir? We service them all. Call 0434 951 341 with the code and your model number and we'll decode it over the phone.
Three things every fault code has in common
It's a symptom, not a diagnosis
A drain fault code doesn't tell you why the drain backed up — it narrows the search. The tables give the most likely causes so you know what you're probably in for.
One reset is a fair test
Power off at the breaker for two minutes. A one-off trip (a surge, a brown-out) clears and stays cleared. A code that returns is a real fault — stop resetting and get it looked at.
Quoting it saves you money
Tell us the code when you book and we arrive knowing where to look. The suspect part still gets tested and confirmed on site before anything is ordered — you only ever pay for the part that's actually faulty.
Repairs and servicing across Perth from $220 inc GST
All brands, wall splits to ducted. Licensed electrical and refrigerant work under one roof, fixed quotes before any repair.
Frequently Asked Questions
What is an air conditioner fault code?
Modern systems constantly self-monitor — sensors, motors, pressures, communication between the indoor and outdoor units. When something reads wrong, the system stops or limits itself and reports a short code (or a flash pattern) identifying which check failed. It's the machine telling you where to look, which is exactly why quoting it when you book a repair saves you money.
Can I fix a fault code myself?
Sometimes — safely. Cleaning a clogged filter, clearing a blocked drain outlet, removing debris around the outdoor unit, and a two-minute power cycle at the breaker resolve a surprising share of codes, and our tables flag exactly which ones are worth trying. Anything involving refrigerant, wiring or the sealed system is licensed territory — that's where the code becomes our job.
Why does the same code keep coming back after I reset it?
Because the fault is real. A code that returns after a power cycle means the underlying cause is still there, and repeatedly clearing it just lets the system keep running with a problem — which is how a cheap fix becomes an expensive one. One reset is a fair test; three resets is a booking.
My brand isn't listed — can you still help?
Yes — we service every major brand, including Samsung, LG, Haier, Kelvinator, Rinnai and ActronAir alongside the six with tables here. Call 0434 951 341 with the brand, the code and your model number and we'll decode it over the phone.
Is Mitsubishi Electric the same as Mitsubishi Heavy Industries?
No, and this trips up a lot of people. They're two separate companies making different air conditioners with completely different fault-code systems — Mitsubishi Electric uses blink counts and P/U/F check codes, while Mitsubishi Heavy Industries uses RUN/TIMER lamp patterns and E-numbers. Check the badge on your indoor unit before picking a table, or you'll be reading the wrong meanings entirely.
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