Brivis fault code h01 44
Flame roll-out detected during ignition.
What h01 44 actually means
Flame roll-out. The burner flame has come out of the combustion chamber where it should not be, and the roll-out sensor has shut the heater down. This is one of the codes we take seriously immediately.
What causes it
- A blocked or restricted flue, including bird nests, which is more common than people expect
- A cracked or corroded heat exchanger
- A blocked burner or debris in the combustion chamber
- Incorrect gas pressure
- A failed flue fan
Most likely first. That order is from what we actually find on site, not from the manual.
Safe to check yourself
No tools, no covers off, nothing to do with gas, refrigerant or wiring.
- Turn the heater off at the controller and leave it off
- That is the whole list. Do not restart it repeatedly to see if it clears
What we check on site
So you know what you’re paying for.
- Full flue inspection end to end
- Heat exchanger inspection for cracking
- Carbon monoxide test with a calibrated analyser while the unit runs
- Gas pressure test at the appliance
- Burner and combustion chamber clean and inspection
Can you keep using it?
No. Turn it off and leave it off until someone has looked at it. Flame roll-out means combustion is happening where it should not be, and the failure behind it is often a heat exchanger, which puts carbon monoxide into the air you are breathing. Carbon monoxide has no smell and no warning.
What the fix usually involves
Depends entirely on what caused it. A blocked flue is a clean and a bird guard. A cracked heat exchanger is not repairable on most units and means replacing the heater, and we will tell you that plainly rather than sell you a part that does not fix it.
Is it worth fixing?
That depends almost entirely on how old the unit is. Past about ten years on hot water and gas heating, and twelve on aircon, a significant repair usually costs more per remaining year than a replacement does — and it’s the same point at which the VEU rebate is worth the most, because old inefficient appliances are exactly what the scheme pays to remove. If yours is young and the fault is a component, we’ll fix it and say so.
Repair or replace? The 10-year rule, and what the rebate is worth →