Heater Error Codes Explained by Brand

Got a code flashing on your heater controller? Pick your brand below to see every code explained in plain English, then book a local Macedon Ranges technician. We are factory-trained dealers for Brivis and Rinnai and carry common parts on board, so many faults are fixed on the first visit.

Find your error code by brand

• Brivis and Rinnai: ducted gas heating codes, plus the older Buffalo and Wombat flash codes.
• Braemar: the full list of Braemar ducted gas heater fault codes.
• Bonaire: the full list of Bonaire ducted gas heater fault codes.

Split system and evaporative cooler codes differ by model; tell us the brand and the code when you book a repair and we will tell you what it usually means.

Before you do anything else

A fault code is the heater protecting itself. Most codes mean the control board has detected something outside its limits and shut the burner down. The safe things a homeowner can do are limited, and they are the same for every brand:

1. Turn the heater off at the controller and leave it off for a minute or two, then turn it back on once. If the code returns, stop; repeated resetting can mask a fault the heater is trying to warn you about.
2. Check the switchboard for a tripped circuit and check that the heater’s isolator has not been switched off.
3. Check the return air filter. A badly blocked filter causes overheat and airflow faults on every brand. Clean or replace it if it is dirty.
4. Do not open the heater, touch gas fittings, wiring or the flue, or attempt any repair yourself. Gas heater faults need a licensed technician.
5. If you smell gas, turn the heater off, turn off the gas at the meter if you can, open windows, do not operate electrical switches near the smell, and call your gas distributor’s emergency line before anyone else.

When to stop and book a repair

Any code that comes back after one reset. Any flame, ignition, gas valve, overheat, rollout or flue-related code, first time. Any code accompanied by a smell, soot marks around the unit, headaches while the heater runs, or a heater that keeps cutting out. Tell us the brand, the code and what the unit is doing when you book a repair and the technician arrives with the likely parts.

Not sure what your code means? We are

Send us the code and what your unit is doing, and we will call you back with a time and an upfront price. Our technicians are our own employees, we service all major brands, and we cover the whole Macedon Ranges. See gas ducted heating repairs for the faults we fix most and evaporative cooling repairs for cooler faults.