How are heat pump fault codes matched?

A code is matched only inside an official codeset explicitly evidenced for the exact brand and model selected.

What happens if a fault code is not verified?

We show an unknown-code result, do not guess a meaning, and direct you to recorded official support where available.

Can this site diagnose or repair a heat pump?

No. The site identifies source-documented meanings and safety routes; a licensed technician must confirm the actual cause and perform licensed work.

Australian hot-water codes, checked against manuals

Copy the code.
Match the exact heat pump.

Enter every character from the controller, plus the brand or full model number. A match shows what that manufacturer documented, the source behind it and the point where licensed help is needed.

Browse by brand

Codes documented: 615
Official manuals cited: 34
Brands covered: 28
Models listed: 1,175

How it works

Three checks before you act

Identify your unit
Read the full model number from the data plate on the tank or outdoor unit. Keep every cover closed.
Understand the code
Copy every letter, number, dash or flash count. Then check the documented meaning for that controller.
Choose the safe next step
Use the cited support route, or stop and call a licensed trade when the physical warning signs demand it.

Official codes found

Browse sourced brands

See all audited brands

These counts come from captured manufacturer documents. A controller shared across twenty models is counted once per compatible code set and brand, not twenty times.

Brands are shown for identification only; this site is independent

What owners look up

Popular fault codes

Reviewed examples shown while recent anonymous trends load.

Popularity uses aggregate fault-code lookups only. No contact details or browser identifiers are returned by this module.

No code on the display?

Start with the thing that changed

No hot water?Cold at every outlet? Check red flags first, then capture the controller display and exact model.Lukewarm water?Warm but not hot? Preserve the settings, note the pattern and look for an exact displayed message.Leaking?Water visible? Stay clear of electrical areas, then record the leak only from a dry, safe position.Unusual noise?New or escalating sound? Do not reproduce it—note when it happens and capture any display code.No power or display?Blank controller? Assume the unit may still be live, never test wiring, and escalate repeat breaker trips.High energy use?Bill jumped? Compare kWh and billing periods, note controller behaviour, and avoid electrical testing.

Start with the exact unit

Look up a heat pump fault code

Pick the brand, search for the model number on the unit label, then enter the code exactly as you see it. Spaces, hyphens, and letter case do not matter.

Brand

Model number

Use the full model number from the data plate; similar models can use different codes.

Fault code

Loading the model index…

The lookup form needs JavaScript. Direct fault-code, model, and brand pages remain readable without it; you can start from the coverage list.

Common questions

About the fault-code finder

How are heat pump fault codes matched?: A code is matched only inside an official codeset explicitly evidenced for the exact brand and model selected.
What happens if a fault code is not verified?: We show an unknown-code result, do not guess a meaning, and direct you to recorded official support where available.
Can this site diagnose or repair a heat pump?: No. The site identifies source-documented meanings and safety routes; a licensed technician must confirm the actual cause and perform licensed work.

Copy the code.Match the exact heat pump.